/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:29:12,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:29:12,476 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 11:29:12,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:29:12,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:29:12,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:29:12,519 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:29:12,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:29:12,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:29:12,526 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:29:12,526 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:29:12,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:29:12,527 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:29:12,527 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:29:12,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:29:12,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:29:12,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:29:12,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:29:12,528 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:29:12,528 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:29:12,529 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:29:12,532 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:29:12,532 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:29:12,533 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:29:12,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:29:12,533 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:29:12,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:29:12,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:29:12,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:29:12,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:29:12,535 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:29:12,535 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:29:12,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:29:12,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:29:12,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:29:12,536 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:29:12,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:29:12,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:29:12,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:29:12,831 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:29:12,832 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:29:12,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-08-27 11:29:13,968 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:29:14,311 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:29:14,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-08-27 11:29:14,331 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d289ea28/e716b19f258e4d0a8b5eb3df1d1295e4/FLAG0ddd50ec8 [2023-08-27 11:29:14,346 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d289ea28/e716b19f258e4d0a8b5eb3df1d1295e4 [2023-08-27 11:29:14,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:29:14,352 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:29:14,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:29:14,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:29:14,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:29:14,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@330de48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14, skipping insertion in model container [2023-08-27 11:29:14,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,404 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:29:14,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:29:14,754 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:29:14,785 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:29:14,786 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:29:14,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:29:14,859 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:29:14,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14 WrapperNode [2023-08-27 11:29:14,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:29:14,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:29:14,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:29:14,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:29:14,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,932 INFO L138 Inliner]: procedures = 172, calls = 53, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 246 [2023-08-27 11:29:14,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:29:14,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:29:14,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:29:14,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:29:14,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,958 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,973 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,983 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:29:14,984 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:29:14,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:29:14,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:29:14,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (1/1) ... [2023-08-27 11:29:14,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:29:15,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:29:15,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 11:29:15,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 11:29:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:29:15,060 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-27 11:29:15,061 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-27 11:29:15,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:29:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:29:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:29:15,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:29:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-27 11:29:15,063 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-27 11:29:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:29:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:29:15,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:29:15,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:29:15,064 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 11:29:15,231 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:29:15,233 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:29:15,609 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:29:15,618 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:29:15,618 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-27 11:29:15,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:29:15 BoogieIcfgContainer [2023-08-27 11:29:15,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:29:15,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:29:15,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:29:15,624 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:29:15,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:29:14" (1/3) ... [2023-08-27 11:29:15,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1feeea40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:29:15, skipping insertion in model container [2023-08-27 11:29:15,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:29:14" (2/3) ... [2023-08-27 11:29:15,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1feeea40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:29:15, skipping insertion in model container [2023-08-27 11:29:15,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:29:15" (3/3) ... [2023-08-27 11:29:15,626 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2023-08-27 11:29:15,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:29:15,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-27 11:29:15,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:29:15,732 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 11:29:15,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:15,923 INFO L124 PetriNetUnfolderBase]: 61/468 cut-off events. [2023-08-27 11:29:15,923 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 11:29:15,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 468 events. 61/468 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2087 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 250. Up to 8 conditions per place. [2023-08-27 11:29:15,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:15,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:15,956 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:29:15,963 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:15,984 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:15,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:16,067 INFO L124 PetriNetUnfolderBase]: 61/468 cut-off events. [2023-08-27 11:29:16,067 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 11:29:16,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 468 events. 61/468 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2087 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 250. Up to 8 conditions per place. [2023-08-27 11:29:16,091 INFO L119 LiptonReduction]: Number of co-enabled transitions 29346 [2023-08-27 11:29:21,239 INFO L134 LiptonReduction]: Checked pairs total: 53499 [2023-08-27 11:29:21,243 INFO L136 LiptonReduction]: Total number of compositions: 227 [2023-08-27 11:29:21,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:29:21,273 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7eecba6b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:29:21,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-27 11:29:21,277 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:29:21,277 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 11:29:21,277 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:29:21,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:21,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:29:21,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr4ASSERT_VIOLATIONASSERT, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:29:21,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash 32558444, now seen corresponding path program 1 times [2023-08-27 11:29:21,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:21,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862682872] [2023-08-27 11:29:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:21,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:21,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:21,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862682872] [2023-08-27 11:29:21,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862682872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:29:21,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:29:21,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:29:21,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939141466] [2023-08-27 11:29:21,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:29:21,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:29:21,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:29:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:29:21,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 488 [2023-08-27 11:29:21,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 96 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:21,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:21,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 488 [2023-08-27 11:29:21,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:22,575 INFO L124 PetriNetUnfolderBase]: 7407/12124 cut-off events. [2023-08-27 11:29:22,575 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2023-08-27 11:29:22,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23421 conditions, 12124 events. 7407/12124 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 84432 event pairs, 6336 based on Foata normal form. 1608/9149 useless extension candidates. Maximal degree in co-relation 22428. Up to 11142 conditions per place. [2023-08-27 11:29:22,659 INFO L140 encePairwiseOnDemand]: 462/488 looper letters, 78 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-08-27 11:29:22,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 92 transitions, 366 flow [2023-08-27 11:29:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:29:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:29:22,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2023-08-27 11:29:22,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523224043715847 [2023-08-27 11:29:22,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2023-08-27 11:29:22,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2023-08-27 11:29:22,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:22,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2023-08-27 11:29:22,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:22,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:22,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:22,693 INFO L175 Difference]: Start difference. First operand has 74 places, 96 transitions, 214 flow. Second operand 3 states and 766 transitions. [2023-08-27 11:29:22,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 92 transitions, 366 flow [2023-08-27 11:29:22,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:29:22,705 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 176 flow [2023-08-27 11:29:22,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-08-27 11:29:22,710 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2023-08-27 11:29:22,710 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 176 flow [2023-08-27 11:29:22,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:22,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:22,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:29:22,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:29:22,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr4ASSERT_VIOLATIONASSERT === [t1_funErr4ASSERT_VIOLATIONASSERT, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:29:22,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:22,712 INFO L85 PathProgramCache]: Analyzing trace with hash -710962095, now seen corresponding path program 1 times [2023-08-27 11:29:22,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:22,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015883422] [2023-08-27 11:29:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:22,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:23,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:23,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015883422] [2023-08-27 11:29:23,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015883422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:29:23,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:29:23,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:29:23,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753321225] [2023-08-27 11:29:23,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:29:23,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:29:23,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:23,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:29:23,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:29:23,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 488 [2023-08-27 11:29:23,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:23,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:23,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 488 [2023-08-27 11:29:23,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:24,174 INFO L124 PetriNetUnfolderBase]: 8536/14133 cut-off events. [2023-08-27 11:29:24,174 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-08-27 11:29:24,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27576 conditions, 14133 events. 8536/14133 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 103314 event pairs, 5251 based on Foata normal form. 0/8872 useless extension candidates. Maximal degree in co-relation 27457. Up to 11013 conditions per place. [2023-08-27 11:29:24,249 INFO L140 encePairwiseOnDemand]: 476/488 looper letters, 132 selfloop transitions, 15 changer transitions 9/168 dead transitions. [2023-08-27 11:29:24,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 168 transitions, 709 flow [2023-08-27 11:29:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:29:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:29:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1450 transitions. [2023-08-27 11:29:24,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244730679156909 [2023-08-27 11:29:24,254 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1450 transitions. [2023-08-27 11:29:24,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1450 transitions. [2023-08-27 11:29:24,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:24,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1450 transitions. [2023-08-27 11:29:24,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 488.0) internal successors, (3904), 8 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,267 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 488.0) internal successors, (3904), 8 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,267 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 176 flow. Second operand 7 states and 1450 transitions. [2023-08-27 11:29:24,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 168 transitions, 709 flow [2023-08-27 11:29:24,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 168 transitions, 701 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:29:24,278 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 290 flow [2023-08-27 11:29:24,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=290, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2023-08-27 11:29:24,279 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 10 predicate places. [2023-08-27 11:29:24,279 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 290 flow [2023-08-27 11:29:24,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:24,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:29:24,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:29:24,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr4ASSERT_VIOLATIONASSERT, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:29:24,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:24,285 INFO L85 PathProgramCache]: Analyzing trace with hash -557256523, now seen corresponding path program 1 times [2023-08-27 11:29:24,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:24,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869695541] [2023-08-27 11:29:24,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:24,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:24,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:24,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869695541] [2023-08-27 11:29:24,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869695541] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:29:24,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294245184] [2023-08-27 11:29:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:24,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:29:24,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:29:24,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:29:24,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 11:29:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:24,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:29:24,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:29:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:24,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:29:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:24,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294245184] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:29:24,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:29:24,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:29:24,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109042870] [2023-08-27 11:29:24,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:29:24,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:29:24,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:24,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:29:24,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:29:24,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 488 [2023-08-27 11:29:24,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 219.42857142857142) internal successors, (1536), 7 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:24,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 488 [2023-08-27 11:29:24,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:24,615 INFO L124 PetriNetUnfolderBase]: 31/118 cut-off events. [2023-08-27 11:29:24,615 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 11:29:24,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 118 events. 31/118 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 485 event pairs, 0 based on Foata normal form. 17/124 useless extension candidates. Maximal degree in co-relation 303. Up to 76 conditions per place. [2023-08-27 11:29:24,616 INFO L140 encePairwiseOnDemand]: 485/488 looper letters, 26 selfloop transitions, 2 changer transitions 13/45 dead transitions. [2023-08-27 11:29:24,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 229 flow [2023-08-27 11:29:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:29:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:29:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 907 transitions. [2023-08-27 11:29:24,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646516393442623 [2023-08-27 11:29:24,619 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 907 transitions. [2023-08-27 11:29:24,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 907 transitions. [2023-08-27 11:29:24,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:24,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 907 transitions. [2023-08-27 11:29:24,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 226.75) internal successors, (907), 4 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 488.0) internal successors, (2440), 5 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,627 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 488.0) internal successors, (2440), 5 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,627 INFO L175 Difference]: Start difference. First operand has 84 places, 87 transitions, 290 flow. Second operand 4 states and 907 transitions. [2023-08-27 11:29:24,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 229 flow [2023-08-27 11:29:24,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 209 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-27 11:29:24,628 INFO L231 Difference]: Finished difference. Result has 38 places, 22 transitions, 75 flow [2023-08-27 11:29:24,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2023-08-27 11:29:24,629 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -36 predicate places. [2023-08-27 11:29:24,629 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 75 flow [2023-08-27 11:29:24,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 219.42857142857142) internal successors, (1536), 7 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:24,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:24,630 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:29:24,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 11:29:24,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:29:24,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr4ASSERT_VIOLATIONASSERT === [t1_funErr4ASSERT_VIOLATIONASSERT, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:29:24,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:24,836 INFO L85 PathProgramCache]: Analyzing trace with hash -326556649, now seen corresponding path program 1 times [2023-08-27 11:29:24,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:24,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579908287] [2023-08-27 11:29:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:24,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:24,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:24,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579908287] [2023-08-27 11:29:24,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579908287] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:29:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087023148] [2023-08-27 11:29:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:24,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:29:24,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:29:24,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:29:24,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 11:29:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:25,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 11:29:25,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:29:25,122 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:29:25,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:29:25,158 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 11:29:25,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 11:29:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:25,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:29:25,267 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_50 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_50) |c_t1_funThread1of1ForFork1_munge_~v#1.base|) |c_t1_funThread1of1ForFork1_munge_~v#1.offset|) 0)) is different from false [2023-08-27 11:29:25,292 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_50 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_50) |c_~#global1~0.base|) |c_~#global1~0.offset|) 0)) is different from false [2023-08-27 11:29:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:29:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087023148] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:29:25,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:29:25,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-27 11:29:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949270287] [2023-08-27 11:29:25,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:29:25,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:29:25,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:25,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:29:25,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=39, Unknown=2, NotChecked=26, Total=90 [2023-08-27 11:29:25,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 488 [2023-08-27 11:29:25,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 75 flow. Second operand has 10 states, 10 states have (on average 186.3) internal successors, (1863), 10 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:25,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:25,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 488 [2023-08-27 11:29:25,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:25,408 INFO L124 PetriNetUnfolderBase]: 18/69 cut-off events. [2023-08-27 11:29:25,408 INFO L125 PetriNetUnfolderBase]: For 30/31 co-relation queries the response was YES. [2023-08-27 11:29:25,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 69 events. 18/69 cut-off events. For 30/31 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 197 event pairs, 2 based on Foata normal form. 3/65 useless extension candidates. Maximal degree in co-relation 169. Up to 22 conditions per place. [2023-08-27 11:29:25,408 INFO L140 encePairwiseOnDemand]: 480/488 looper letters, 14 selfloop transitions, 6 changer transitions 3/26 dead transitions. [2023-08-27 11:29:25,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 133 flow [2023-08-27 11:29:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:29:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:29:25,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 944 transitions. [2023-08-27 11:29:25,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38688524590163936 [2023-08-27 11:29:25,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 944 transitions. [2023-08-27 11:29:25,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 944 transitions. [2023-08-27 11:29:25,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:25,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 944 transitions. [2023-08-27 11:29:25,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:25,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:25,421 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:25,421 INFO L175 Difference]: Start difference. First operand has 38 places, 22 transitions, 75 flow. Second operand 5 states and 944 transitions. [2023-08-27 11:29:25,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 133 flow [2023-08-27 11:29:25,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:29:25,425 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 78 flow [2023-08-27 11:29:25,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-08-27 11:29:25,428 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -43 predicate places. [2023-08-27 11:29:25,428 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 78 flow [2023-08-27 11:29:25,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 186.3) internal successors, (1863), 10 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:25,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:25,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:29:25,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 11:29:25,641 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 [2023-08-27 11:29:25,642 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr4ASSERT_VIOLATIONASSERT, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:29:25,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:25,643 INFO L85 PathProgramCache]: Analyzing trace with hash 508410026, now seen corresponding path program 1 times [2023-08-27 11:29:25,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:25,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745445320] [2023-08-27 11:29:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:25,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:25,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:25,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745445320] [2023-08-27 11:29:25,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745445320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:29:25,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:29:25,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:29:25,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145411278] [2023-08-27 11:29:25,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:29:25,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:29:25,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:25,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:29:25,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:29:25,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 488 [2023-08-27 11:29:25,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:25,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:25,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 488 [2023-08-27 11:29:25,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:25,784 INFO L124 PetriNetUnfolderBase]: 13/62 cut-off events. [2023-08-27 11:29:25,785 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-27 11:29:25,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 62 events. 13/62 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 162 event pairs, 4 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 169. Up to 27 conditions per place. [2023-08-27 11:29:25,785 INFO L140 encePairwiseOnDemand]: 482/488 looper letters, 16 selfloop transitions, 8 changer transitions 0/27 dead transitions. [2023-08-27 11:29:25,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 156 flow [2023-08-27 11:29:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:29:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:29:25,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 940 transitions. [2023-08-27 11:29:25,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38524590163934425 [2023-08-27 11:29:25,788 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 940 transitions. [2023-08-27 11:29:25,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 940 transitions. [2023-08-27 11:29:25,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:25,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 940 transitions. [2023-08-27 11:29:25,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:25,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:25,795 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:25,795 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 78 flow. Second operand 5 states and 940 transitions. [2023-08-27 11:29:25,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 156 flow [2023-08-27 11:29:25,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 145 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:29:25,797 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 133 flow [2023-08-27 11:29:25,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-08-27 11:29:25,799 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -40 predicate places. [2023-08-27 11:29:25,799 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 133 flow [2023-08-27 11:29:25,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:25,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:25,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:29:25,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:29:25,800 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr4ASSERT_VIOLATIONASSERT, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:29:25,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash 508409967, now seen corresponding path program 1 times [2023-08-27 11:29:25,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:25,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008192329] [2023-08-27 11:29:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:25,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:25,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:25,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008192329] [2023-08-27 11:29:25,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008192329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:29:25,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:29:25,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:29:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010550087] [2023-08-27 11:29:25,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:29:25,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:29:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:29:25,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:29:25,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 488 [2023-08-27 11:29:25,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 133 flow. Second operand has 7 states, 7 states have (on average 179.42857142857142) internal successors, (1256), 7 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:25,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:25,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 488 [2023-08-27 11:29:25,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:26,045 INFO L124 PetriNetUnfolderBase]: 11/59 cut-off events. [2023-08-27 11:29:26,045 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-08-27 11:29:26,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 59 events. 11/59 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 169 event pairs, 0 based on Foata normal form. 3/62 useless extension candidates. Maximal degree in co-relation 185. Up to 12 conditions per place. [2023-08-27 11:29:26,045 INFO L140 encePairwiseOnDemand]: 480/488 looper letters, 15 selfloop transitions, 12 changer transitions 2/32 dead transitions. [2023-08-27 11:29:26,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 217 flow [2023-08-27 11:29:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:29:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:29:26,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1630 transitions. [2023-08-27 11:29:26,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711293260473588 [2023-08-27 11:29:26,050 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1630 transitions. [2023-08-27 11:29:26,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1630 transitions. [2023-08-27 11:29:26,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:26,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1630 transitions. [2023-08-27 11:29:26,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 181.11111111111111) internal successors, (1630), 9 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:26,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 488.0) internal successors, (4880), 10 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:26,060 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 488.0) internal successors, (4880), 10 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:26,060 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 133 flow. Second operand 9 states and 1630 transitions. [2023-08-27 11:29:26,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 217 flow [2023-08-27 11:29:26,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 213 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-27 11:29:26,062 INFO L231 Difference]: Finished difference. Result has 45 places, 25 transitions, 165 flow [2023-08-27 11:29:26,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2023-08-27 11:29:26,063 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -29 predicate places. [2023-08-27 11:29:26,063 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 25 transitions, 165 flow [2023-08-27 11:29:26,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 179.42857142857142) internal successors, (1256), 7 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:26,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:26,064 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:29:26,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:29:26,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr4ASSERT_VIOLATIONASSERT, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:29:26,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash 776437333, now seen corresponding path program 1 times [2023-08-27 11:29:26,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:26,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356751495] [2023-08-27 11:29:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:26,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:26,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:26,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356751495] [2023-08-27 11:29:26,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356751495] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:29:26,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916246999] [2023-08-27 11:29:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:26,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:29:26,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:29:26,323 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:29:26,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 11:29:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:26,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 11:29:26,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:29:26,440 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:29:26,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:29:26,463 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 11:29:26,583 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-27 11:29:26,618 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 11:29:26,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:26,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:29:26,705 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_114 (Array Int Int))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_t1_funThread1of1ForFork1_munge_~v#1.base| (store (select |c_#memory_int| |c_t1_funThread1of1ForFork1_munge_~v#1.base|) |c_t1_funThread1of1ForFork1_munge_~v#1.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_t1_funThread1of1ForFork1_munge_~v#1.base|) |c_t1_funThread1of1ForFork1_munge_~v#1.offset|) 2147483648)) (< v_ArrVal_112 (+ |c_t1_funThread1of1ForFork1_munge_#t~post7#1| 1)))) is different from false [2023-08-27 11:29:26,723 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_114 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t1_funThread1of1ForFork1_munge_~v#1.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_t1_funThread1of1ForFork1_munge_~v#1.base| (store .cse0 |c_t1_funThread1of1ForFork1_munge_~v#1.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_t1_funThread1of1ForFork1_munge_~v#1.base|) |c_t1_funThread1of1ForFork1_munge_~v#1.offset|) 2147483648)) (< v_ArrVal_112 (+ (select .cse0 |c_t1_funThread1of1ForFork1_munge_~v#1.offset|) 1))))) is different from false [2023-08-27 11:29:26,767 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_114 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#global1~0.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#global1~0.base| (store .cse0 |c_~#global1~0.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_~#global1~0.base|) |c_~#global1~0.offset|) 2147483648)) (< v_ArrVal_112 (+ (select .cse0 |c_~#global1~0.offset|) 1))))) is different from false [2023-08-27 11:29:26,799 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_111 (Array Int Int)) (v_ArrVal_114 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_111))) (let ((.cse1 (select .cse0 |c_~#global1~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#global1~0.base| (store .cse1 |c_~#global1~0.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_~#global1~0.base|) |c_~#global1~0.offset|) 2147483648)) (< v_ArrVal_112 (+ (select .cse1 |c_~#global1~0.offset|) 1)))))) is different from false [2023-08-27 11:29:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:29:26,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916246999] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:29:26,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:29:26,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 16 [2023-08-27 11:29:26,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217708982] [2023-08-27 11:29:26,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:29:26,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 11:29:26,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:26,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 11:29:26,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=138, Unknown=8, NotChecked=108, Total=306 [2023-08-27 11:29:26,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 488 [2023-08-27 11:29:26,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 25 transitions, 165 flow. Second operand has 18 states, 18 states have (on average 180.0) internal successors, (3240), 18 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:26,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:26,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 488 [2023-08-27 11:29:26,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:27,071 INFO L124 PetriNetUnfolderBase]: 9/54 cut-off events. [2023-08-27 11:29:27,072 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-08-27 11:29:27,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 54 events. 9/54 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 1 based on Foata normal form. 2/56 useless extension candidates. Maximal degree in co-relation 198. Up to 17 conditions per place. [2023-08-27 11:29:27,072 INFO L140 encePairwiseOnDemand]: 482/488 looper letters, 12 selfloop transitions, 6 changer transitions 6/27 dead transitions. [2023-08-27 11:29:27,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 27 transitions, 213 flow [2023-08-27 11:29:27,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:29:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:29:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1265 transitions. [2023-08-27 11:29:27,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703161592505855 [2023-08-27 11:29:27,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1265 transitions. [2023-08-27 11:29:27,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1265 transitions. [2023-08-27 11:29:27,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:27,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1265 transitions. [2023-08-27 11:29:27,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.71428571428572) internal successors, (1265), 7 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:27,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 488.0) internal successors, (3904), 8 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:27,085 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 488.0) internal successors, (3904), 8 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:27,085 INFO L175 Difference]: Start difference. First operand has 45 places, 25 transitions, 165 flow. Second operand 7 states and 1265 transitions. [2023-08-27 11:29:27,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 27 transitions, 213 flow [2023-08-27 11:29:27,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 27 transitions, 187 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-27 11:29:27,087 INFO L231 Difference]: Finished difference. Result has 43 places, 17 transitions, 100 flow [2023-08-27 11:29:27,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=43, PETRI_TRANSITIONS=17} [2023-08-27 11:29:27,088 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -31 predicate places. [2023-08-27 11:29:27,088 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 17 transitions, 100 flow [2023-08-27 11:29:27,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 180.0) internal successors, (3240), 18 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:27,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:27,090 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:29:27,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 11:29:27,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:29:27,295 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr4ASSERT_VIOLATIONASSERT, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:29:27,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash 776437392, now seen corresponding path program 1 times [2023-08-27 11:29:27,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:27,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785355469] [2023-08-27 11:29:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:27,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:27,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:27,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785355469] [2023-08-27 11:29:27,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785355469] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:29:27,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768045877] [2023-08-27 11:29:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:27,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:29:27,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:29:27,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:29:27,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 11:29:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:27,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:29:27,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:29:27,655 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:29:27,655 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 11:29:27,724 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 11:29:27,757 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 11:29:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:27,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:29:27,796 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_149 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_149) |c_t1_funThread1of1ForFork1_munge_~v#1.base|) |c_t1_funThread1of1ForFork1_munge_~v#1.offset|) 2147483649)) is different from false [2023-08-27 11:29:27,812 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:29:27,812 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-27 11:29:27,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-08-27 11:29:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:29:27,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768045877] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:29:27,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:29:27,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-27 11:29:27,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037527521] [2023-08-27 11:29:27,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:29:27,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 11:29:27,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:27,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 11:29:27,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=190, Unknown=1, NotChecked=28, Total=272 [2023-08-27 11:29:27,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 488 [2023-08-27 11:29:27,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 17 transitions, 100 flow. Second operand has 17 states, 17 states have (on average 180.11764705882354) internal successors, (3062), 17 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:27,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:27,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 488 [2023-08-27 11:29:27,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:29:28,061 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2023-08-27 11:29:28,062 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-08-27 11:29:28,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 41 events. 7/41 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 148. Up to 12 conditions per place. [2023-08-27 11:29:28,062 INFO L140 encePairwiseOnDemand]: 482/488 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-27 11:29:28,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 20 transitions, 140 flow [2023-08-27 11:29:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:29:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:29:28,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1263 transitions. [2023-08-27 11:29:28,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36973067915690866 [2023-08-27 11:29:28,067 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1263 transitions. [2023-08-27 11:29:28,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1263 transitions. [2023-08-27 11:29:28,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:29:28,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1263 transitions. [2023-08-27 11:29:28,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.42857142857142) internal successors, (1263), 7 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:28,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 488.0) internal successors, (3904), 8 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:28,076 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 488.0) internal successors, (3904), 8 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:28,076 INFO L175 Difference]: Start difference. First operand has 43 places, 17 transitions, 100 flow. Second operand 7 states and 1263 transitions. [2023-08-27 11:29:28,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 20 transitions, 140 flow [2023-08-27 11:29:28,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 99 flow, removed 0 selfloop flow, removed 18 redundant places. [2023-08-27 11:29:28,078 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-27 11:29:28,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-27 11:29:28,079 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -44 predicate places. [2023-08-27 11:29:28,079 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-27 11:29:28,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 180.11764705882354) internal successors, (3062), 17 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:28,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONASSERT (27 of 28 remaining) [2023-08-27 11:29:28,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2023-08-27 11:29:28,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2023-08-27 11:29:28,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2023-08-27 11:29:28,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2023-08-27 11:29:28,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2023-08-27 11:29:28,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2023-08-27 11:29:28,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2023-08-27 11:29:28,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2023-08-27 11:29:28,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2023-08-27 11:29:28,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONASSERT (17 of 28 remaining) [2023-08-27 11:29:28,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2023-08-27 11:29:28,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2023-08-27 11:29:28,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2023-08-27 11:29:28,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 28 remaining) [2023-08-27 11:29:28,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 28 remaining) [2023-08-27 11:29:28,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2023-08-27 11:29:28,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2023-08-27 11:29:28,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2023-08-27 11:29:28,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONASSERT (8 of 28 remaining) [2023-08-27 11:29:28,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2023-08-27 11:29:28,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2023-08-27 11:29:28,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2023-08-27 11:29:28,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONASSERT (4 of 28 remaining) [2023-08-27 11:29:28,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2023-08-27 11:29:28,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2023-08-27 11:29:28,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2023-08-27 11:29:28,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2023-08-27 11:29:28,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 11:29:28,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:29:28,304 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:29:28,305 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:29:28,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:28,361 INFO L124 PetriNetUnfolderBase]: 61/468 cut-off events. [2023-08-27 11:29:28,361 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 11:29:28,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 468 events. 61/468 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2087 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 250. Up to 8 conditions per place. [2023-08-27 11:29:28,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:28,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:28,368 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:29:28,368 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:28,368 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:28,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 261 transitions, 544 flow [2023-08-27 11:29:28,417 INFO L124 PetriNetUnfolderBase]: 61/468 cut-off events. [2023-08-27 11:29:28,417 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 11:29:28,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 468 events. 61/468 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2087 event pairs, 0 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 250. Up to 8 conditions per place. [2023-08-27 11:29:28,434 INFO L119 LiptonReduction]: Number of co-enabled transitions 29346 [2023-08-27 11:29:33,291 INFO L134 LiptonReduction]: Checked pairs total: 49602 [2023-08-27 11:29:33,292 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-27 11:29:33,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:29:33,293 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;@7eecba6b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:29:33,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 11:29:33,296 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:29:33,296 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-08-27 11:29:33,296 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:29:33,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:33,297 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:29:33,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:29:33,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:33,297 INFO L85 PathProgramCache]: Analyzing trace with hash -581520488, now seen corresponding path program 1 times [2023-08-27 11:29:33,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:33,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310145004] [2023-08-27 11:29:33,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:33,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:29:33,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:29:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:29:33,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:29:33,342 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:29:33,342 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 11:29:33,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 11:29:33,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:29:33,342 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:29:33,343 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-27 11:29:33,343 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:29:33,343 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:29:33,408 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 11:29:33,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 413 transitions, 874 flow [2023-08-27 11:29:33,615 INFO L124 PetriNetUnfolderBase]: 205/1397 cut-off events. [2023-08-27 11:29:33,616 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 11:29:33,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 1397 events. 205/1397 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8894 event pairs, 2 based on Foata normal form. 0/1089 useless extension candidates. Maximal degree in co-relation 846. Up to 32 conditions per place. [2023-08-27 11:29:33,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 413 transitions, 874 flow [2023-08-27 11:29:33,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 413 transitions, 874 flow [2023-08-27 11:29:33,666 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:29:33,666 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 358 places, 413 transitions, 874 flow [2023-08-27 11:29:33,666 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 358 places, 413 transitions, 874 flow [2023-08-27 11:29:33,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 413 transitions, 874 flow [2023-08-27 11:29:33,888 INFO L124 PetriNetUnfolderBase]: 205/1397 cut-off events. [2023-08-27 11:29:33,888 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 11:29:33,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 1397 events. 205/1397 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8894 event pairs, 2 based on Foata normal form. 0/1089 useless extension candidates. Maximal degree in co-relation 846. Up to 32 conditions per place. [2023-08-27 11:29:33,981 INFO L119 LiptonReduction]: Number of co-enabled transitions 104244 [2023-08-27 11:29:39,747 INFO L134 LiptonReduction]: Checked pairs total: 202568 [2023-08-27 11:29:39,748 INFO L136 LiptonReduction]: Total number of compositions: 351 [2023-08-27 11:29:39,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:29:39,750 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;@7eecba6b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:29:39,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-27 11:29:39,751 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:29:39,751 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-27 11:29:39,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:29:39,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:29:39,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:29:39,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr4ASSERT_VIOLATIONASSERT, t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-27 11:29:39,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:29:39,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2099161137, now seen corresponding path program 1 times [2023-08-27 11:29:39,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:29:39,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189951867] [2023-08-27 11:29:39,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:29:39,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:29:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:29:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:29:39,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:29:39,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189951867] [2023-08-27 11:29:39,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189951867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:29:39,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:29:39,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:29:39,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119626811] [2023-08-27 11:29:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:29:39,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:29:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:29:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:29:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:29:39,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 764 [2023-08-27 11:29:39,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 168 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:29:39,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:29:39,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 764 [2023-08-27 11:29:39,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand