/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:40:27,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:40:27,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:40:27,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-09-16 11:40:27,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:40:27,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:40:27,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:40:27,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:40:27,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:40:27,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:40:27,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:40:27,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:40:27,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:40:27,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:40:27,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:40:27,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:40:27,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:40:27,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:40:27,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:40:27,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:40:27,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:40:27,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:40:27,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:40:27,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:40:27,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:40:27,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:40:27,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:40:27,265 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:40:27,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:40:27,265 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:40:27,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:40:27,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:40:27,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:40:27,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:40:27,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:40:27,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:40:27,266 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:40:27,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:40:27,267 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:40:27,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:40:27,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:40:27,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:40:27,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:40:27,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:40:27,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:40:27,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:40:27,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:40:27,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:40:27,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:40:27,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:40:27,268 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:40:27,268 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:40:27,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:40:27,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:40:27,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:40:27,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:40:27,482 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:40:27,482 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:40:27,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i [2022-09-16 11:40:27,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16980df7e/bc7e665c3e08495e85f2fa4484adb1bc/FLAGb2490fe30 [2022-09-16 11:40:27,999 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:40:28,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i [2022-09-16 11:40:28,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16980df7e/bc7e665c3e08495e85f2fa4484adb1bc/FLAGb2490fe30 [2022-09-16 11:40:28,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16980df7e/bc7e665c3e08495e85f2fa4484adb1bc [2022-09-16 11:40:28,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:40:28,042 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:40:28,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:40:28,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:40:28,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:40:28,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdc1f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28, skipping insertion in model container [2022-09-16 11:40:28,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:40:28,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:40:28,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:40:28,476 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:40:28,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:40:28,571 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:40:28,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28 WrapperNode [2022-09-16 11:40:28,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:40:28,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:40:28,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:40:28,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:40:28,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,622 INFO L138 Inliner]: procedures = 369, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 133 [2022-09-16 11:40:28,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:40:28,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:40:28,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:40:28,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:40:28,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:40:28,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:40:28,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:40:28,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:40:28,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28" (1/1) ... [2022-09-16 11:40:28,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:40:28,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:40:28,680 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) [2022-09-16 11:40:28,684 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 [2022-09-16 11:40:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:40:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-09-16 11:40:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:40:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:40:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:40:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:40:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:40:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:40:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-09-16 11:40:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-16 11:40:28,707 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-16 11:40:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:40:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:40:28,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:40:28,710 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:40:28,889 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:40:28,890 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:40:29,112 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:40:29,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:40:29,121 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:40:29,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:40:29 BoogieIcfgContainer [2022-09-16 11:40:29,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:40:29,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:40:29,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:40:29,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:40:29,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:40:28" (1/3) ... [2022-09-16 11:40:29,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4aebab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:40:29, skipping insertion in model container [2022-09-16 11:40:29,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:40:28" (2/3) ... [2022-09-16 11:40:29,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4aebab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:40:29, skipping insertion in model container [2022-09-16 11:40:29,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:40:29" (3/3) ... [2022-09-16 11:40:29,129 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_17-arrayloop_nr.i [2022-09-16 11:40:29,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:40:29,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:40:29,140 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:40:29,208 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-16 11:40:29,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 160 transitions, 325 flow [2022-09-16 11:40:29,293 INFO L130 PetriNetUnfolder]: 6/159 cut-off events. [2022-09-16 11:40:29,294 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:40:29,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 159 events. 6/159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 249 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2022-09-16 11:40:29,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 160 transitions, 325 flow [2022-09-16 11:40:29,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 159 transitions, 321 flow [2022-09-16 11:40:29,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:40:29,323 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;@54b7dc64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:40:29,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-09-16 11:40:29,336 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-09-16 11:40:29,336 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:40:29,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:29,336 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:29,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:29,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:29,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1590421947, now seen corresponding path program 1 times [2022-09-16 11:40:29,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:29,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210134096] [2022-09-16 11:40:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:29,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:29,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:29,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210134096] [2022-09-16 11:40:29,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210134096] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:29,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:29,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:40:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37844500] [2022-09-16 11:40:29,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:29,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:40:29,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:29,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:40:29,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:40:29,569 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 160 [2022-09-16 11:40:29,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 159 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:29,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 160 [2022-09-16 11:40:29,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:29,690 INFO L130 PetriNetUnfolder]: 3/224 cut-off events. [2022-09-16 11:40:29,690 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:40:29,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 224 events. 3/224 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 18/227 useless extension candidates. Maximal degree in co-relation 167. Up to 21 conditions per place. [2022-09-16 11:40:29,694 INFO L137 encePairwiseOnDemand]: 151/160 looper letters, 29 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2022-09-16 11:40:29,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 169 transitions, 407 flow [2022-09-16 11:40:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:40:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:40:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2022-09-16 11:40:29,708 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9416666666666667 [2022-09-16 11:40:29,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2022-09-16 11:40:29,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2022-09-16 11:40:29,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:29,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2022-09-16 11:40:29,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,727 INFO L175 Difference]: Start difference. First operand has 157 places, 159 transitions, 321 flow. Second operand 3 states and 452 transitions. [2022-09-16 11:40:29,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 169 transitions, 407 flow [2022-09-16 11:40:29,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 169 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:40:29,742 INFO L231 Difference]: Finished difference. Result has 159 places, 158 transitions, 338 flow [2022-09-16 11:40:29,744 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=159, PETRI_TRANSITIONS=158} [2022-09-16 11:40:29,747 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 2 predicate places. [2022-09-16 11:40:29,747 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 158 transitions, 338 flow [2022-09-16 11:40:29,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:29,748 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:29,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:40:29,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:29,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2017749774, now seen corresponding path program 1 times [2022-09-16 11:40:29,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:29,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251419561] [2022-09-16 11:40:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:29,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:29,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:29,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251419561] [2022-09-16 11:40:29,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251419561] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:29,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:29,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:40:29,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963242508] [2022-09-16 11:40:29,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:29,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:40:29,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:29,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:40:29,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:40:29,842 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-09-16 11:40:29,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 158 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:29,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-09-16 11:40:29,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:29,944 INFO L130 PetriNetUnfolder]: 3/223 cut-off events. [2022-09-16 11:40:29,945 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-09-16 11:40:29,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 223 events. 3/223 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 172. Up to 26 conditions per place. [2022-09-16 11:40:29,949 INFO L137 encePairwiseOnDemand]: 152/160 looper letters, 35 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2022-09-16 11:40:29,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 172 transitions, 448 flow [2022-09-16 11:40:29,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:40:29,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:40:29,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2022-09-16 11:40:29,956 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.87875 [2022-09-16 11:40:29,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 703 transitions. [2022-09-16 11:40:29,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 703 transitions. [2022-09-16 11:40:29,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:29,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 703 transitions. [2022-09-16 11:40:29,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,960 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,960 INFO L175 Difference]: Start difference. First operand has 159 places, 158 transitions, 338 flow. Second operand 5 states and 703 transitions. [2022-09-16 11:40:29,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 172 transitions, 448 flow [2022-09-16 11:40:29,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 172 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:40:29,965 INFO L231 Difference]: Finished difference. Result has 165 places, 160 transitions, 366 flow [2022-09-16 11:40:29,965 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=366, PETRI_PLACES=165, PETRI_TRANSITIONS=160} [2022-09-16 11:40:29,966 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 8 predicate places. [2022-09-16 11:40:29,966 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 160 transitions, 366 flow [2022-09-16 11:40:29,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:29,967 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 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, 1, 1, 1] [2022-09-16 11:40:29,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:40:29,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:29,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:29,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1883442586, now seen corresponding path program 1 times [2022-09-16 11:40:29,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:29,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692132971] [2022-09-16 11:40:29,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:29,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:30,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:30,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692132971] [2022-09-16 11:40:30,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692132971] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:40:30,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527688560] [2022-09-16 11:40:30,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:30,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:30,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:40:30,088 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) [2022-09-16 11:40:30,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:40:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:30,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2022-09-16 11:40:30,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:40:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:40:30,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:40:30,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527688560] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:30,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:40:30,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-09-16 11:40:30,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653382617] [2022-09-16 11:40:30,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:30,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:40:30,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:30,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:40:30,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:40:30,230 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 160 [2022-09-16 11:40:30,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 160 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:30,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 160 [2022-09-16 11:40:30,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:30,287 INFO L130 PetriNetUnfolder]: 4/263 cut-off events. [2022-09-16 11:40:30,287 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-09-16 11:40:30,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 263 events. 4/263 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 322 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 257. Up to 15 conditions per place. [2022-09-16 11:40:30,289 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 22 selfloop transitions, 3 changer transitions 0/170 dead transitions. [2022-09-16 11:40:30,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 170 transitions, 436 flow [2022-09-16 11:40:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:40:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:40:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2022-09-16 11:40:30,292 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.94375 [2022-09-16 11:40:30,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2022-09-16 11:40:30,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2022-09-16 11:40:30,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:30,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2022-09-16 11:40:30,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,294 INFO L175 Difference]: Start difference. First operand has 165 places, 160 transitions, 366 flow. Second operand 3 states and 453 transitions. [2022-09-16 11:40:30,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 170 transitions, 436 flow [2022-09-16 11:40:30,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 170 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:40:30,299 INFO L231 Difference]: Finished difference. Result has 167 places, 162 transitions, 382 flow [2022-09-16 11:40:30,299 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=167, PETRI_TRANSITIONS=162} [2022-09-16 11:40:30,301 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 10 predicate places. [2022-09-16 11:40:30,301 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 162 transitions, 382 flow [2022-09-16 11:40:30,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:30,302 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 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, 1, 1, 1, 1] [2022-09-16 11:40:30,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:40:30,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:30,520 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:30,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1742821583, now seen corresponding path program 1 times [2022-09-16 11:40:30,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:30,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023661986] [2022-09-16 11:40:30,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:30,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:30,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:30,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023661986] [2022-09-16 11:40:30,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023661986] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:40:30,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759747072] [2022-09-16 11:40:30,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:30,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:30,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:40:30,582 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) [2022-09-16 11:40:30,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:40:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:30,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 2 conjunts are in the unsatisfiable core [2022-09-16 11:40:30,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:40:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:40:30,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:40:30,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759747072] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:30,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:40:30,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-09-16 11:40:30,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46938570] [2022-09-16 11:40:30,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:30,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:40:30,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:30,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:40:30,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:40:30,680 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 160 [2022-09-16 11:40:30,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 162 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:30,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 160 [2022-09-16 11:40:30,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:30,742 INFO L130 PetriNetUnfolder]: 3/262 cut-off events. [2022-09-16 11:40:30,742 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-09-16 11:40:30,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 262 events. 3/262 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 315 event pairs, 0 based on Foata normal form. 1/255 useless extension candidates. Maximal degree in co-relation 261. Up to 14 conditions per place. [2022-09-16 11:40:30,746 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 20 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2022-09-16 11:40:30,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 169 transitions, 442 flow [2022-09-16 11:40:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:40:30,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:40:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2022-09-16 11:40:30,748 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9395833333333333 [2022-09-16 11:40:30,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2022-09-16 11:40:30,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2022-09-16 11:40:30,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:30,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2022-09-16 11:40:30,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,750 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,750 INFO L175 Difference]: Start difference. First operand has 167 places, 162 transitions, 382 flow. Second operand 3 states and 451 transitions. [2022-09-16 11:40:30,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 169 transitions, 442 flow [2022-09-16 11:40:30,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 169 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:40:30,753 INFO L231 Difference]: Finished difference. Result has 167 places, 161 transitions, 380 flow [2022-09-16 11:40:30,753 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=167, PETRI_TRANSITIONS=161} [2022-09-16 11:40:30,754 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 10 predicate places. [2022-09-16 11:40:30,754 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 161 transitions, 380 flow [2022-09-16 11:40:30,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:30,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:30,755 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-09-16 11:40:30,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:40:30,968 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,SelfDestructingSolverStorable3 [2022-09-16 11:40:30,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash -41584103, now seen corresponding path program 1 times [2022-09-16 11:40:30,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:30,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146197852] [2022-09-16 11:40:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:30,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:40:31,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:31,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146197852] [2022-09-16 11:40:31,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146197852] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:31,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:31,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:40:31,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102097493] [2022-09-16 11:40:31,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:31,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:40:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:31,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:40:31,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:40:31,047 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-09-16 11:40:31,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 161 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:31,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-09-16 11:40:31,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:31,107 INFO L130 PetriNetUnfolder]: 3/261 cut-off events. [2022-09-16 11:40:31,107 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-09-16 11:40:31,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 261 events. 3/261 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 313 event pairs, 0 based on Foata normal form. 1/254 useless extension candidates. Maximal degree in co-relation 267. Up to 22 conditions per place. [2022-09-16 11:40:31,109 INFO L137 encePairwiseOnDemand]: 151/160 looper letters, 18 selfloop transitions, 12 changer transitions 0/162 dead transitions. [2022-09-16 11:40:31,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 162 transitions, 440 flow [2022-09-16 11:40:31,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:40:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:40:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 687 transitions. [2022-09-16 11:40:31,111 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.85875 [2022-09-16 11:40:31,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 687 transitions. [2022-09-16 11:40:31,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 687 transitions. [2022-09-16 11:40:31,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:31,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 687 transitions. [2022-09-16 11:40:31,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,114 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,114 INFO L175 Difference]: Start difference. First operand has 167 places, 161 transitions, 380 flow. Second operand 5 states and 687 transitions. [2022-09-16 11:40:31,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 162 transitions, 440 flow [2022-09-16 11:40:31,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 162 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:40:31,117 INFO L231 Difference]: Finished difference. Result has 171 places, 162 transitions, 416 flow [2022-09-16 11:40:31,118 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=171, PETRI_TRANSITIONS=162} [2022-09-16 11:40:31,119 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 14 predicate places. [2022-09-16 11:40:31,119 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 162 transitions, 416 flow [2022-09-16 11:40:31,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:31,120 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-09-16 11:40:31,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:40:31,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:31,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:31,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1289106837, now seen corresponding path program 1 times [2022-09-16 11:40:31,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:31,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369749865] [2022-09-16 11:40:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:31,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:31,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:31,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369749865] [2022-09-16 11:40:31,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369749865] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:40:31,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877874217] [2022-09-16 11:40:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:31,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:31,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:40:31,215 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) [2022-09-16 11:40:31,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:40:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:31,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:40:31,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:40:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:31,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:40:31,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877874217] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:31,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:40:31,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:40:31,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149147344] [2022-09-16 11:40:31,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:31,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:40:31,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:40:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:40:31,391 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-09-16 11:40:31,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 162 transitions, 416 flow. Second operand has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:31,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-09-16 11:40:31,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:31,480 INFO L130 PetriNetUnfolder]: 3/260 cut-off events. [2022-09-16 11:40:31,480 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-09-16 11:40:31,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 260 events. 3/260 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 302 event pairs, 0 based on Foata normal form. 1/253 useless extension candidates. Maximal degree in co-relation 280. Up to 12 conditions per place. [2022-09-16 11:40:31,482 INFO L137 encePairwiseOnDemand]: 152/160 looper letters, 30 selfloop transitions, 9 changer transitions 0/171 dead transitions. [2022-09-16 11:40:31,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 171 transitions, 510 flow [2022-09-16 11:40:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:40:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:40:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 964 transitions. [2022-09-16 11:40:31,484 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8607142857142858 [2022-09-16 11:40:31,484 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 964 transitions. [2022-09-16 11:40:31,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 964 transitions. [2022-09-16 11:40:31,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:31,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 964 transitions. [2022-09-16 11:40:31,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,489 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,489 INFO L175 Difference]: Start difference. First operand has 171 places, 162 transitions, 416 flow. Second operand 7 states and 964 transitions. [2022-09-16 11:40:31,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 171 transitions, 510 flow [2022-09-16 11:40:31,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 171 transitions, 492 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:40:31,493 INFO L231 Difference]: Finished difference. Result has 172 places, 161 transitions, 412 flow [2022-09-16 11:40:31,494 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=172, PETRI_TRANSITIONS=161} [2022-09-16 11:40:31,495 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 15 predicate places. [2022-09-16 11:40:31,496 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 161 transitions, 412 flow [2022-09-16 11:40:31,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:31,496 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:31,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:40:31,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:31,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:31,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:31,704 INFO L85 PathProgramCache]: Analyzing trace with hash 596043265, now seen corresponding path program 1 times [2022-09-16 11:40:31,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:31,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662009317] [2022-09-16 11:40:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:31,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:31,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:31,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662009317] [2022-09-16 11:40:31,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662009317] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:40:31,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050885372] [2022-09-16 11:40:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:31,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:31,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:40:31,769 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) [2022-09-16 11:40:31,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:40:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:31,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:40:31,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:40:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:31,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:40:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:40:31,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050885372] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:40:31,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:40:31,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 11:40:31,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939946771] [2022-09-16 11:40:31,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:40:31,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:40:31,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:31,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:40:31,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:40:31,984 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-09-16 11:40:31,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 161 transitions, 412 flow. Second operand has 10 states, 10 states have (on average 135.1) internal successors, (1351), 10 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:31,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:31,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-09-16 11:40:31,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:32,103 INFO L130 PetriNetUnfolder]: 3/283 cut-off events. [2022-09-16 11:40:32,103 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-09-16 11:40:32,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 283 events. 3/283 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 230 event pairs, 0 based on Foata normal form. 2/277 useless extension candidates. Maximal degree in co-relation 290. Up to 15 conditions per place. [2022-09-16 11:40:32,106 INFO L137 encePairwiseOnDemand]: 151/160 looper letters, 35 selfloop transitions, 13 changer transitions 0/180 dead transitions. [2022-09-16 11:40:32,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 180 transitions, 562 flow [2022-09-16 11:40:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:40:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:40:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1238 transitions. [2022-09-16 11:40:32,109 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8597222222222223 [2022-09-16 11:40:32,109 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1238 transitions. [2022-09-16 11:40:32,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1238 transitions. [2022-09-16 11:40:32,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:32,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1238 transitions. [2022-09-16 11:40:32,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 137.55555555555554) internal successors, (1238), 9 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,114 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,114 INFO L175 Difference]: Start difference. First operand has 172 places, 161 transitions, 412 flow. Second operand 9 states and 1238 transitions. [2022-09-16 11:40:32,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 180 transitions, 562 flow [2022-09-16 11:40:32,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 180 transitions, 540 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-09-16 11:40:32,119 INFO L231 Difference]: Finished difference. Result has 179 places, 165 transitions, 464 flow [2022-09-16 11:40:32,120 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=464, PETRI_PLACES=179, PETRI_TRANSITIONS=165} [2022-09-16 11:40:32,120 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 22 predicate places. [2022-09-16 11:40:32,120 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 165 transitions, 464 flow [2022-09-16 11:40:32,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.1) internal successors, (1351), 10 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:32,121 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:32,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:40:32,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:32,339 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:32,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1848644439, now seen corresponding path program 2 times [2022-09-16 11:40:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:32,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971329940] [2022-09-16 11:40:32,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:32,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-09-16 11:40:32,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:32,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971329940] [2022-09-16 11:40:32,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971329940] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:32,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:32,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:40:32,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691858901] [2022-09-16 11:40:32,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:32,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:40:32,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:32,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:40:32,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:40:32,415 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 160 [2022-09-16 11:40:32,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 165 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:32,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 160 [2022-09-16 11:40:32,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:32,474 INFO L130 PetriNetUnfolder]: 3/282 cut-off events. [2022-09-16 11:40:32,474 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-09-16 11:40:32,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 282 events. 3/282 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 229 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 261. Up to 21 conditions per place. [2022-09-16 11:40:32,477 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 28 selfloop transitions, 4 changer transitions 0/176 dead transitions. [2022-09-16 11:40:32,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 176 transitions, 550 flow [2022-09-16 11:40:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:40:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:40:32,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2022-09-16 11:40:32,478 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.89875 [2022-09-16 11:40:32,478 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 719 transitions. [2022-09-16 11:40:32,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 719 transitions. [2022-09-16 11:40:32,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:32,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 719 transitions. [2022-09-16 11:40:32,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,481 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,481 INFO L175 Difference]: Start difference. First operand has 179 places, 165 transitions, 464 flow. Second operand 5 states and 719 transitions. [2022-09-16 11:40:32,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 176 transitions, 550 flow [2022-09-16 11:40:32,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 176 transitions, 536 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-09-16 11:40:32,485 INFO L231 Difference]: Finished difference. Result has 183 places, 167 transitions, 476 flow [2022-09-16 11:40:32,485 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=183, PETRI_TRANSITIONS=167} [2022-09-16 11:40:32,485 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2022-09-16 11:40:32,485 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 167 transitions, 476 flow [2022-09-16 11:40:32,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:32,486 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:32,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:40:32,486 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:32,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash -743071587, now seen corresponding path program 1 times [2022-09-16 11:40:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:32,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200009501] [2022-09-16 11:40:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:32,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-09-16 11:40:32,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:32,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200009501] [2022-09-16 11:40:32,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200009501] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:32,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:32,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:40:32,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130234668] [2022-09-16 11:40:32,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:32,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:40:32,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:32,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:40:32,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:40:32,580 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-09-16 11:40:32,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 167 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:32,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-09-16 11:40:32,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:32,655 INFO L130 PetriNetUnfolder]: 3/281 cut-off events. [2022-09-16 11:40:32,656 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-09-16 11:40:32,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 281 events. 3/281 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 222 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 339. Up to 32 conditions per place. [2022-09-16 11:40:32,658 INFO L137 encePairwiseOnDemand]: 152/160 looper letters, 38 selfloop transitions, 6 changer transitions 0/178 dead transitions. [2022-09-16 11:40:32,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 178 transitions, 586 flow [2022-09-16 11:40:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:40:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:40:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2022-09-16 11:40:32,660 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.87875 [2022-09-16 11:40:32,660 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 703 transitions. [2022-09-16 11:40:32,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 703 transitions. [2022-09-16 11:40:32,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:32,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 703 transitions. [2022-09-16 11:40:32,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,664 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,664 INFO L175 Difference]: Start difference. First operand has 183 places, 167 transitions, 476 flow. Second operand 5 states and 703 transitions. [2022-09-16 11:40:32,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 178 transitions, 586 flow [2022-09-16 11:40:32,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 178 transitions, 575 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-09-16 11:40:32,668 INFO L231 Difference]: Finished difference. Result has 187 places, 169 transitions, 497 flow [2022-09-16 11:40:32,668 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=497, PETRI_PLACES=187, PETRI_TRANSITIONS=169} [2022-09-16 11:40:32,669 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 30 predicate places. [2022-09-16 11:40:32,669 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 169 transitions, 497 flow [2022-09-16 11:40:32,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:32,670 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:32,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:40:32,670 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:32,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:32,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1526322342, now seen corresponding path program 1 times [2022-09-16 11:40:32,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:32,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304377471] [2022-09-16 11:40:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:32,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-09-16 11:40:32,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:32,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304377471] [2022-09-16 11:40:32,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304377471] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:32,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:32,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:40:32,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912843462] [2022-09-16 11:40:32,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:32,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:40:32,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:32,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:40:32,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:40:32,726 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 160 [2022-09-16 11:40:32,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 169 transitions, 497 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:32,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 160 [2022-09-16 11:40:32,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:32,766 INFO L130 PetriNetUnfolder]: 3/280 cut-off events. [2022-09-16 11:40:32,766 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-09-16 11:40:32,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 280 events. 3/280 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 217 event pairs, 0 based on Foata normal form. 1/281 useless extension candidates. Maximal degree in co-relation 314. Up to 18 conditions per place. [2022-09-16 11:40:32,769 INFO L137 encePairwiseOnDemand]: 156/160 looper letters, 13 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2022-09-16 11:40:32,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 169 transitions, 528 flow [2022-09-16 11:40:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:40:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:40:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-09-16 11:40:32,770 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9208333333333333 [2022-09-16 11:40:32,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-09-16 11:40:32,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-09-16 11:40:32,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:32,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-09-16 11:40:32,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,773 INFO L175 Difference]: Start difference. First operand has 187 places, 169 transitions, 497 flow. Second operand 3 states and 442 transitions. [2022-09-16 11:40:32,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 169 transitions, 528 flow [2022-09-16 11:40:32,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 169 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:40:32,775 INFO L231 Difference]: Finished difference. Result has 188 places, 169 transitions, 504 flow [2022-09-16 11:40:32,776 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=188, PETRI_TRANSITIONS=169} [2022-09-16 11:40:32,776 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 31 predicate places. [2022-09-16 11:40:32,776 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 169 transitions, 504 flow [2022-09-16 11:40:32,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:32,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:32,777 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:32,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:40:32,777 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:32,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:32,777 INFO L85 PathProgramCache]: Analyzing trace with hash -71351951, now seen corresponding path program 1 times [2022-09-16 11:40:32,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:32,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302601957] [2022-09-16 11:40:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:32,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-09-16 11:40:32,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:32,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302601957] [2022-09-16 11:40:32,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302601957] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:40:32,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765600314] [2022-09-16 11:40:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:32,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:32,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:40:32,840 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) [2022-09-16 11:40:32,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:40:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:32,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:40:32,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:40:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-16 11:40:33,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:40:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-16 11:40:33,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765600314] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:40:33,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:40:33,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 19 [2022-09-16 11:40:33,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939794887] [2022-09-16 11:40:33,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:40:33,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:40:33,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:33,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:40:33,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:40:33,247 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 160 [2022-09-16 11:40:33,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 169 transitions, 504 flow. Second operand has 19 states, 19 states have (on average 118.21052631578948) internal successors, (2246), 19 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:33,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:33,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 160 [2022-09-16 11:40:33,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:34,345 INFO L130 PetriNetUnfolder]: 797/4549 cut-off events. [2022-09-16 11:40:34,346 INFO L131 PetriNetUnfolder]: For 2776/2776 co-relation queries the response was YES. [2022-09-16 11:40:34,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7862 conditions, 4549 events. 797/4549 cut-off events. For 2776/2776 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 33446 event pairs, 88 based on Foata normal form. 23/4523 useless extension candidates. Maximal degree in co-relation 7537. Up to 276 conditions per place. [2022-09-16 11:40:34,369 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 225 selfloop transitions, 59 changer transitions 0/397 dead transitions. [2022-09-16 11:40:34,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 397 transitions, 1919 flow [2022-09-16 11:40:34,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-16 11:40:34,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-09-16 11:40:34,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4020 transitions. [2022-09-16 11:40:34,375 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2022-09-16 11:40:34,375 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4020 transitions. [2022-09-16 11:40:34,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4020 transitions. [2022-09-16 11:40:34,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:34,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4020 transitions. [2022-09-16 11:40:34,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 121.81818181818181) internal successors, (4020), 33 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 160.0) internal successors, (5440), 34 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,390 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 160.0) internal successors, (5440), 34 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,390 INFO L175 Difference]: Start difference. First operand has 188 places, 169 transitions, 504 flow. Second operand 33 states and 4020 transitions. [2022-09-16 11:40:34,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 397 transitions, 1919 flow [2022-09-16 11:40:34,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 397 transitions, 1901 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:40:34,398 INFO L231 Difference]: Finished difference. Result has 228 places, 212 transitions, 1035 flow [2022-09-16 11:40:34,399 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1035, PETRI_PLACES=228, PETRI_TRANSITIONS=212} [2022-09-16 11:40:34,399 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 71 predicate places. [2022-09-16 11:40:34,399 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 212 transitions, 1035 flow [2022-09-16 11:40:34,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 118.21052631578948) internal successors, (2246), 19 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:34,400 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:34,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:40:34,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-09-16 11:40:34,615 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:34,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:34,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2068295955, now seen corresponding path program 1 times [2022-09-16 11:40:34,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:34,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668077469] [2022-09-16 11:40:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:34,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2022-09-16 11:40:34,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:34,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668077469] [2022-09-16 11:40:34,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668077469] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:34,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:34,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:40:34,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216432599] [2022-09-16 11:40:34,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:34,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:40:34,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:34,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:40:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:40:34,719 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 160 [2022-09-16 11:40:34,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 212 transitions, 1035 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:34,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 160 [2022-09-16 11:40:34,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:34,915 INFO L130 PetriNetUnfolder]: 30/1015 cut-off events. [2022-09-16 11:40:34,916 INFO L131 PetriNetUnfolder]: For 776/790 co-relation queries the response was YES. [2022-09-16 11:40:34,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 1015 events. 30/1015 cut-off events. For 776/790 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3147 event pairs, 2 based on Foata normal form. 13/1028 useless extension candidates. Maximal degree in co-relation 1515. Up to 85 conditions per place. [2022-09-16 11:40:34,923 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 17 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2022-09-16 11:40:34,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 211 transitions, 1103 flow [2022-09-16 11:40:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:40:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:40:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 705 transitions. [2022-09-16 11:40:34,924 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.88125 [2022-09-16 11:40:34,924 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 705 transitions. [2022-09-16 11:40:34,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 705 transitions. [2022-09-16 11:40:34,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:34,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 705 transitions. [2022-09-16 11:40:34,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,927 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,927 INFO L175 Difference]: Start difference. First operand has 228 places, 212 transitions, 1035 flow. Second operand 5 states and 705 transitions. [2022-09-16 11:40:34,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 211 transitions, 1103 flow [2022-09-16 11:40:34,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 211 transitions, 1041 flow, removed 10 selfloop flow, removed 10 redundant places. [2022-09-16 11:40:34,933 INFO L231 Difference]: Finished difference. Result has 221 places, 211 transitions, 1007 flow [2022-09-16 11:40:34,933 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1007, PETRI_PLACES=221, PETRI_TRANSITIONS=211} [2022-09-16 11:40:34,934 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 64 predicate places. [2022-09-16 11:40:34,934 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 211 transitions, 1007 flow [2022-09-16 11:40:34,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:34,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:34,934 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:34,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:40:34,934 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:34,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:34,935 INFO L85 PathProgramCache]: Analyzing trace with hash 307335263, now seen corresponding path program 1 times [2022-09-16 11:40:34,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:34,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025734083] [2022-09-16 11:40:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:34,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-09-16 11:40:35,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:35,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025734083] [2022-09-16 11:40:35,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025734083] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:40:35,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993929538] [2022-09-16 11:40:35,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:35,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:35,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:40:35,113 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) [2022-09-16 11:40:35,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:40:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:35,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 16 conjunts are in the unsatisfiable core [2022-09-16 11:40:35,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:40:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-09-16 11:40:35,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:40:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-09-16 11:40:35,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993929538] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:40:35,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:40:35,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-09-16 11:40:35,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812588106] [2022-09-16 11:40:35,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:40:35,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:40:35,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:40:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:40:35,833 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-09-16 11:40:35,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 211 transitions, 1007 flow. Second operand has 23 states, 23 states have (on average 135.7826086956522) internal successors, (3123), 23 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:35,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-09-16 11:40:35,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:36,240 INFO L130 PetriNetUnfolder]: 30/1081 cut-off events. [2022-09-16 11:40:36,240 INFO L131 PetriNetUnfolder]: For 975/984 co-relation queries the response was YES. [2022-09-16 11:40:36,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1778 conditions, 1081 events. 30/1081 cut-off events. For 975/984 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3149 event pairs, 2 based on Foata normal form. 5/1086 useless extension candidates. Maximal degree in co-relation 1638. Up to 50 conditions per place. [2022-09-16 11:40:36,248 INFO L137 encePairwiseOnDemand]: 151/160 looper letters, 70 selfloop transitions, 50 changer transitions 0/268 dead transitions. [2022-09-16 11:40:36,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 268 transitions, 1473 flow [2022-09-16 11:40:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:40:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 11:40:36,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4067 transitions. [2022-09-16 11:40:36,255 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8472916666666667 [2022-09-16 11:40:36,255 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4067 transitions. [2022-09-16 11:40:36,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4067 transitions. [2022-09-16 11:40:36,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:36,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4067 transitions. [2022-09-16 11:40:36,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 135.56666666666666) internal successors, (4067), 30 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:36,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:36,267 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:36,267 INFO L175 Difference]: Start difference. First operand has 221 places, 211 transitions, 1007 flow. Second operand 30 states and 4067 transitions. [2022-09-16 11:40:36,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 268 transitions, 1473 flow [2022-09-16 11:40:36,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 268 transitions, 1432 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:40:36,274 INFO L231 Difference]: Finished difference. Result has 250 places, 221 transitions, 1202 flow [2022-09-16 11:40:36,275 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1202, PETRI_PLACES=250, PETRI_TRANSITIONS=221} [2022-09-16 11:40:36,276 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 93 predicate places. [2022-09-16 11:40:36,276 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 221 transitions, 1202 flow [2022-09-16 11:40:36,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 135.7826086956522) internal successors, (3123), 23 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:36,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:36,277 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:36,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-09-16 11:40:36,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:36,502 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:36,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash -88995554, now seen corresponding path program 2 times [2022-09-16 11:40:36,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:36,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779328405] [2022-09-16 11:40:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:36,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2022-09-16 11:40:36,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:36,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779328405] [2022-09-16 11:40:36,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779328405] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:40:36,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285393068] [2022-09-16 11:40:36,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:40:36,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:36,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:40:36,625 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) [2022-09-16 11:40:36,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:40:36,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:40:36,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:40:36,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:40:36,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:40:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2022-09-16 11:40:37,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:40:37,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285393068] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:37,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:40:37,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-09-16 11:40:37,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946103578] [2022-09-16 11:40:37,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:37,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:40:37,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:37,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:40:37,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:40:37,031 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 160 [2022-09-16 11:40:37,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 221 transitions, 1202 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:37,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 160 [2022-09-16 11:40:37,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:37,231 INFO L130 PetriNetUnfolder]: 30/1071 cut-off events. [2022-09-16 11:40:37,231 INFO L131 PetriNetUnfolder]: For 1049/1062 co-relation queries the response was YES. [2022-09-16 11:40:37,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1778 conditions, 1071 events. 30/1071 cut-off events. For 1049/1062 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3090 event pairs, 2 based on Foata normal form. 14/1085 useless extension candidates. Maximal degree in co-relation 1643. Up to 99 conditions per place. [2022-09-16 11:40:37,236 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 23 selfloop transitions, 11 changer transitions 0/219 dead transitions. [2022-09-16 11:40:37,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 219 transitions, 1257 flow [2022-09-16 11:40:37,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:40:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:40:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 566 transitions. [2022-09-16 11:40:37,238 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.884375 [2022-09-16 11:40:37,238 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 566 transitions. [2022-09-16 11:40:37,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 566 transitions. [2022-09-16 11:40:37,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:37,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 566 transitions. [2022-09-16 11:40:37,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,240 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,240 INFO L175 Difference]: Start difference. First operand has 250 places, 221 transitions, 1202 flow. Second operand 4 states and 566 transitions. [2022-09-16 11:40:37,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 219 transitions, 1257 flow [2022-09-16 11:40:37,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 219 transitions, 1197 flow, removed 4 selfloop flow, removed 19 redundant places. [2022-09-16 11:40:37,246 INFO L231 Difference]: Finished difference. Result has 232 places, 219 transitions, 1151 flow [2022-09-16 11:40:37,246 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1151, PETRI_PLACES=232, PETRI_TRANSITIONS=219} [2022-09-16 11:40:37,247 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 75 predicate places. [2022-09-16 11:40:37,247 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 219 transitions, 1151 flow [2022-09-16 11:40:37,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:37,247 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:37,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:40:37,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:37,463 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:37,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:37,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1888405954, now seen corresponding path program 1 times [2022-09-16 11:40:37,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:37,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608532034] [2022-09-16 11:40:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2022-09-16 11:40:37,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:37,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608532034] [2022-09-16 11:40:37,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608532034] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:37,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:37,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:40:37,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436686836] [2022-09-16 11:40:37,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:37,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:40:37,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:37,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:40:37,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:40:37,573 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-09-16 11:40:37,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 219 transitions, 1151 flow. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:37,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-09-16 11:40:37,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:37,743 INFO L130 PetriNetUnfolder]: 30/1065 cut-off events. [2022-09-16 11:40:37,743 INFO L131 PetriNetUnfolder]: For 1151/1163 co-relation queries the response was YES. [2022-09-16 11:40:37,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 1065 events. 30/1065 cut-off events. For 1151/1163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3044 event pairs, 2 based on Foata normal form. 12/1077 useless extension candidates. Maximal degree in co-relation 1643. Up to 96 conditions per place. [2022-09-16 11:40:37,751 INFO L137 encePairwiseOnDemand]: 151/160 looper letters, 27 selfloop transitions, 39 changer transitions 0/218 dead transitions. [2022-09-16 11:40:37,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 218 transitions, 1279 flow [2022-09-16 11:40:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:40:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:40:37,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 687 transitions. [2022-09-16 11:40:37,752 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.85875 [2022-09-16 11:40:37,752 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 687 transitions. [2022-09-16 11:40:37,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 687 transitions. [2022-09-16 11:40:37,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:37,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 687 transitions. [2022-09-16 11:40:37,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,754 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,754 INFO L175 Difference]: Start difference. First operand has 232 places, 219 transitions, 1151 flow. Second operand 5 states and 687 transitions. [2022-09-16 11:40:37,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 218 transitions, 1279 flow [2022-09-16 11:40:37,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 218 transitions, 1257 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:40:37,761 INFO L231 Difference]: Finished difference. Result has 232 places, 218 transitions, 1203 flow [2022-09-16 11:40:37,762 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1203, PETRI_PLACES=232, PETRI_TRANSITIONS=218} [2022-09-16 11:40:37,762 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 75 predicate places. [2022-09-16 11:40:37,762 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 218 transitions, 1203 flow [2022-09-16 11:40:37,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:37,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:37,763 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:37,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:40:37,763 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-09-16 11:40:37,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:37,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1588957915, now seen corresponding path program 1 times [2022-09-16 11:40:37,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:37,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322872491] [2022-09-16 11:40:37,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:37,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2022-09-16 11:40:37,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:37,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322872491] [2022-09-16 11:40:37,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322872491] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:40:37,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413044576] [2022-09-16 11:40:37,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:37,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:37,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:40:37,886 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) [2022-09-16 11:40:37,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:40:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:38,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:40:38,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:40:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2022-09-16 11:40:38,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:40:38,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413044576] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:38,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:40:38,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:40:38,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038297896] [2022-09-16 11:40:38,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:38,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:40:38,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:40:38,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:40:38,305 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 160 [2022-09-16 11:40:38,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 218 transitions, 1203 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:38,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:38,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 160 [2022-09-16 11:40:38,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:38,510 INFO L130 PetriNetUnfolder]: 30/1059 cut-off events. [2022-09-16 11:40:38,510 INFO L131 PetriNetUnfolder]: For 1391/1403 co-relation queries the response was YES. [2022-09-16 11:40:38,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 1059 events. 30/1059 cut-off events. For 1391/1403 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3009 event pairs, 2 based on Foata normal form. 12/1071 useless extension candidates. Maximal degree in co-relation 1656. Up to 50 conditions per place. [2022-09-16 11:40:38,514 INFO L137 encePairwiseOnDemand]: 152/160 looper letters, 0 selfloop transitions, 0 changer transitions 226/226 dead transitions. [2022-09-16 11:40:38,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 226 transitions, 1365 flow [2022-09-16 11:40:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:40:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:40:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 964 transitions. [2022-09-16 11:40:38,515 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8607142857142858 [2022-09-16 11:40:38,515 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 964 transitions. [2022-09-16 11:40:38,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 964 transitions. [2022-09-16 11:40:38,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:38,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 964 transitions. [2022-09-16 11:40:38,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:38,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:38,518 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:38,518 INFO L175 Difference]: Start difference. First operand has 232 places, 218 transitions, 1203 flow. Second operand 7 states and 964 transitions. [2022-09-16 11:40:38,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 226 transitions, 1365 flow [2022-09-16 11:40:38,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 226 transitions, 1308 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:40:38,524 INFO L231 Difference]: Finished difference. Result has 233 places, 0 transitions, 0 flow [2022-09-16 11:40:38,524 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=233, PETRI_TRANSITIONS=0} [2022-09-16 11:40:38,524 INFO L287 CegarLoopForPetriNet]: 157 programPoint places, 76 predicate places. [2022-09-16 11:40:38,524 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 0 transitions, 0 flow [2022-09-16 11:40:38,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:38,526 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-09-16 11:40:38,526 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-09-16 11:40:38,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-09-16 11:40:38,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-09-16 11:40:38,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2022-09-16 11:40:38,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-09-16 11:40:38,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-09-16 11:40:38,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-09-16 11:40:38,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-09-16 11:40:38,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-09-16 11:40:38,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-09-16 11:40:38,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-09-16 11:40:38,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-09-16 11:40:38,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:40:38,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:40:38,738 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:40:38,741 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:40:38,741 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:40:38,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:40:38 BasicIcfg [2022-09-16 11:40:38,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:40:38,745 INFO L158 Benchmark]: Toolchain (without parser) took 10702.45ms. Allocated memory was 186.6MB in the beginning and 338.7MB in the end (delta: 152.0MB). Free memory was 163.2MB in the beginning and 245.6MB in the end (delta: -82.4MB). Peak memory consumption was 260.9MB. Max. memory is 8.0GB. [2022-09-16 11:40:38,745 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 186.6MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:40:38,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.05ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 163.2MB in the beginning and 169.0MB in the end (delta: -5.8MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. [2022-09-16 11:40:38,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.50ms. Allocated memory is still 224.4MB. Free memory was 169.0MB in the beginning and 166.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:40:38,745 INFO L158 Benchmark]: Boogie Preprocessor took 24.79ms. Allocated memory is still 224.4MB. Free memory was 166.4MB in the beginning and 164.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:40:38,745 INFO L158 Benchmark]: RCFGBuilder took 474.47ms. Allocated memory is still 224.4MB. Free memory was 164.3MB in the beginning and 144.8MB in the end (delta: 19.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-09-16 11:40:38,746 INFO L158 Benchmark]: TraceAbstraction took 9620.29ms. Allocated memory was 224.4MB in the beginning and 338.7MB in the end (delta: 114.3MB). Free memory was 144.4MB in the beginning and 245.6MB in the end (delta: -101.2MB). Peak memory consumption was 205.5MB. Max. memory is 8.0GB. [2022-09-16 11:40:38,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 186.6MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 527.05ms. Allocated memory was 186.6MB in the beginning and 224.4MB in the end (delta: 37.7MB). Free memory was 163.2MB in the beginning and 169.0MB in the end (delta: -5.8MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.50ms. Allocated memory is still 224.4MB. Free memory was 169.0MB in the beginning and 166.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.79ms. Allocated memory is still 224.4MB. Free memory was 166.4MB in the beginning and 164.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 474.47ms. Allocated memory is still 224.4MB. Free memory was 164.3MB in the beginning and 144.8MB in the end (delta: 19.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 9620.29ms. Allocated memory was 224.4MB in the beginning and 338.7MB in the end (delta: 114.3MB). Free memory was 144.4MB in the beginning and 245.6MB in the end (delta: -101.2MB). Peak memory consumption was 205.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1253]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1253]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1258]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1258]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1244]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1244]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1242]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1242]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 204 locations, 13 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: 9.5s, OverallIterations: 16, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 700 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 700 mSDsluCounter, 441 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 324 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1505 IncrementalHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 141 mSDtfsCounter, 1505 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1940 GetRequests, 1785 SyntacticMatches, 11 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1203occurred in iteration=15, InterpolantAutomatonStates: 132, 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: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 3802 NumberOfCodeBlocks, 3802 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 4262 ConstructedInterpolants, 0 QuantifiedInterpolants, 6988 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4758 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 27 InterpolantComputations, 13 PerfectInterpolantSequences, 6062/7715 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 - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:40:38,774 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 Received shutdown request...