/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 -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/weaver/popl20-bad-commit-1.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:35:03,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:35:03,874 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 00:35:03,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:35:03,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:35:03,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:35:03,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:35:03,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:35:03,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:35:03,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:35:03,926 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:35:03,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:35:03,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:35:03,928 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:35:03,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:35:03,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:35:03,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:35:03,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:35:03,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:35:03,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:35:03,929 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:35:03,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:35:03,931 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:35:03,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:35:03,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:35:03,932 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:35:03,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:35:03,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:35:03,932 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:35:03,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:35:03,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:35:03,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:35:03,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:35:03,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:35:03,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:35:03,935 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:35:04,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:35:04,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:35:04,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:35:04,279 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:35:04,280 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:35:04,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2023-08-27 00:35:05,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:35:05,672 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:35:05,673 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2023-08-27 00:35:05,682 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f005cea89/f3d9a3d4fd444437b5787a09b2c8e189/FLAG32b6720f6 [2023-08-27 00:35:05,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f005cea89/f3d9a3d4fd444437b5787a09b2c8e189 [2023-08-27 00:35:05,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:35:05,704 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:35:05,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:35:05,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:35:05,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:35:05,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:05,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a1aae33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05, skipping insertion in model container [2023-08-27 00:35:05,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:05,732 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:35:05,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:35:05,900 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:35:05,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:35:05,968 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:35:05,969 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:35:05,976 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:35:05,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05 WrapperNode [2023-08-27 00:35:05,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:35:05,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:35:05,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:35:05,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:35:05,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:06,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:06,046 INFO L138 Inliner]: procedures = 25, calls = 69, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 377 [2023-08-27 00:35:06,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:35:06,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:35:06,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:35:06,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:35:06,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:06,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:06,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:06,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:06,083 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:06,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:06,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:06,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:06,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:35:06,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:35:06,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:35:06,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:35:06,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (1/1) ... [2023-08-27 00:35:06,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:35:06,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:06,146 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 00:35:06,169 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 00:35:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:35:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:35:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:35:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:35:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:35:06,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:35:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:35:06,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:35:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:35:06,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:35:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:35:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:35:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:35:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 00:35:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:35:06,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:35:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:35:06,188 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 00:35:06,328 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:35:06,336 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:35:06,898 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:35:07,096 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:35:07,097 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 00:35:07,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:35:07 BoogieIcfgContainer [2023-08-27 00:35:07,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:35:07,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:35:07,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:35:07,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:35:07,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:35:05" (1/3) ... [2023-08-27 00:35:07,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62679fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:35:07, skipping insertion in model container [2023-08-27 00:35:07,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:35:05" (2/3) ... [2023-08-27 00:35:07,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62679fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:35:07, skipping insertion in model container [2023-08-27 00:35:07,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:35:07" (3/3) ... [2023-08-27 00:35:07,108 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2023-08-27 00:35:07,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:35:07,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2023-08-27 00:35:07,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:35:07,218 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 00:35:07,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 299 transitions, 622 flow [2023-08-27 00:35:07,330 INFO L124 PetriNetUnfolderBase]: 27/296 cut-off events. [2023-08-27 00:35:07,331 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:35:07,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 296 events. 27/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 251. Up to 6 conditions per place. [2023-08-27 00:35:07,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 299 transitions, 622 flow [2023-08-27 00:35:07,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 285 transitions, 588 flow [2023-08-27 00:35:07,349 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:35:07,357 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 285 transitions, 588 flow [2023-08-27 00:35:07,360 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 285 transitions, 588 flow [2023-08-27 00:35:07,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 285 transitions, 588 flow [2023-08-27 00:35:07,455 INFO L124 PetriNetUnfolderBase]: 27/285 cut-off events. [2023-08-27 00:35:07,455 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:35:07,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 285 events. 27/285 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 280 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 251. Up to 6 conditions per place. [2023-08-27 00:35:07,461 INFO L119 LiptonReduction]: Number of co-enabled transitions 4260 [2023-08-27 00:35:19,155 INFO L134 LiptonReduction]: Checked pairs total: 4871 [2023-08-27 00:35:19,155 INFO L136 LiptonReduction]: Total number of compositions: 334 [2023-08-27 00:35:19,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:35:19,174 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;@5896ca04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:35:19,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-08-27 00:35:19,177 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:35:19,178 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 00:35:19,178 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:35:19,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:19,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 00:35:19,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:19,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash 47505, now seen corresponding path program 1 times [2023-08-27 00:35:19,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:19,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349853478] [2023-08-27 00:35:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:19,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:19,471 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 00:35:19,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:19,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349853478] [2023-08-27 00:35:19,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349853478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:19,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:19,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:19,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741697155] [2023-08-27 00:35:19,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:19,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:19,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:19,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:19,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:19,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 633 [2023-08-27 00:35:19,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:19,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:19,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 633 [2023-08-27 00:35:19,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:19,838 INFO L124 PetriNetUnfolderBase]: 667/974 cut-off events. [2023-08-27 00:35:19,838 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-08-27 00:35:19,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 974 events. 667/974 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3443 event pairs, 493 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 1740. Up to 970 conditions per place. [2023-08-27 00:35:19,849 INFO L140 encePairwiseOnDemand]: 612/633 looper letters, 38 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2023-08-27 00:35:19,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 198 flow [2023-08-27 00:35:19,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2023-08-27 00:35:19,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3959978936282254 [2023-08-27 00:35:19,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2023-08-27 00:35:19,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2023-08-27 00:35:19,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:19,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2023-08-27 00:35:19,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:19,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:19,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:19,889 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 112 flow. Second operand 3 states and 752 transitions. [2023-08-27 00:35:19,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 198 flow [2023-08-27 00:35:19,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 00:35:19,895 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 148 flow [2023-08-27 00:35:19,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2023-08-27 00:35:19,899 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -10 predicate places. [2023-08-27 00:35:19,899 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 148 flow [2023-08-27 00:35:19,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:19,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:19,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:35:19,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:35:19,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:19,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:19,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1475633, now seen corresponding path program 1 times [2023-08-27 00:35:19,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:19,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772954230] [2023-08-27 00:35:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:19,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:19,984 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 00:35:19,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:19,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772954230] [2023-08-27 00:35:19,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772954230] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:19,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033008738] [2023-08-27 00:35:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:19,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:19,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:19,988 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 00:35:20,011 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 00:35:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:20,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:35:20,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:20,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:20,149 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 00:35:20,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033008738] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:20,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:20,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:35:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977825092] [2023-08-27 00:35:20,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:20,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:35:20,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:20,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:35:20,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:35:20,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 633 [2023-08-27 00:35:20,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 232.14285714285714) internal successors, (1625), 7 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:20,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:20,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 633 [2023-08-27 00:35:20,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:20,491 INFO L124 PetriNetUnfolderBase]: 685/1001 cut-off events. [2023-08-27 00:35:20,492 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 00:35:20,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2096 conditions, 1001 events. 685/1001 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3517 event pairs, 493 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 1941. Up to 970 conditions per place. [2023-08-27 00:35:20,497 INFO L140 encePairwiseOnDemand]: 620/633 looper letters, 35 selfloop transitions, 37 changer transitions 0/72 dead transitions. [2023-08-27 00:35:20,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 412 flow [2023-08-27 00:35:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:35:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:35:20,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1698 transitions. [2023-08-27 00:35:20,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3832092078537576 [2023-08-27 00:35:20,502 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1698 transitions. [2023-08-27 00:35:20,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1698 transitions. [2023-08-27 00:35:20,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:20,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1698 transitions. [2023-08-27 00:35:20,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 242.57142857142858) internal successors, (1698), 7 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:20,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 633.0) internal successors, (5064), 8 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:20,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 633.0) internal successors, (5064), 8 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:20,516 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 148 flow. Second operand 7 states and 1698 transitions. [2023-08-27 00:35:20,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 412 flow [2023-08-27 00:35:20,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 72 transitions, 386 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:20,519 INFO L231 Difference]: Finished difference. Result has 48 places, 72 transitions, 378 flow [2023-08-27 00:35:20,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=48, PETRI_TRANSITIONS=72} [2023-08-27 00:35:20,520 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-27 00:35:20,520 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 72 transitions, 378 flow [2023-08-27 00:35:20,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 232.14285714285714) internal successors, (1625), 7 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:20,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:20,521 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 00:35:20,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:20,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:20,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:20,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:20,733 INFO L85 PathProgramCache]: Analyzing trace with hash 45745969, now seen corresponding path program 1 times [2023-08-27 00:35:20,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:20,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128618474] [2023-08-27 00:35:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:20,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:20,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128618474] [2023-08-27 00:35:20,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128618474] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:20,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120043445] [2023-08-27 00:35:20,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:20,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:20,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:20,867 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 00:35:20,869 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 00:35:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:20,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:35:20,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:20,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:20,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120043445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:20,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:20,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 00:35:20,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465023658] [2023-08-27 00:35:20,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:20,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:35:20,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:20,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:35:20,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:35:20,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 633 [2023-08-27 00:35:20,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 72 transitions, 378 flow. Second operand has 5 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:20,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:20,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 633 [2023-08-27 00:35:20,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:21,234 INFO L124 PetriNetUnfolderBase]: 676/989 cut-off events. [2023-08-27 00:35:21,234 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-27 00:35:21,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 989 events. 676/989 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3434 event pairs, 493 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 2012. Up to 961 conditions per place. [2023-08-27 00:35:21,241 INFO L140 encePairwiseOnDemand]: 623/633 looper letters, 40 selfloop transitions, 20 changer transitions 0/60 dead transitions. [2023-08-27 00:35:21,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 417 flow [2023-08-27 00:35:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:35:21,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:35:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1209 transitions. [2023-08-27 00:35:21,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819905213270142 [2023-08-27 00:35:21,245 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1209 transitions. [2023-08-27 00:35:21,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1209 transitions. [2023-08-27 00:35:21,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:21,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1209 transitions. [2023-08-27 00:35:21,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 241.8) internal successors, (1209), 5 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:21,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:21,254 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:21,254 INFO L175 Difference]: Start difference. First operand has 48 places, 72 transitions, 378 flow. Second operand 5 states and 1209 transitions. [2023-08-27 00:35:21,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 417 flow [2023-08-27 00:35:21,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 380 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:21,263 INFO L231 Difference]: Finished difference. Result has 47 places, 60 transitions, 300 flow [2023-08-27 00:35:21,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=47, PETRI_TRANSITIONS=60} [2023-08-27 00:35:21,264 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-27 00:35:21,264 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 60 transitions, 300 flow [2023-08-27 00:35:21,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:21,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:21,265 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 00:35:21,274 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 00:35:21,471 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,SelfDestructingSolverStorable2 [2023-08-27 00:35:21,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:21,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:21,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1012296964, now seen corresponding path program 2 times [2023-08-27 00:35:21,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:21,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73193505] [2023-08-27 00:35:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:21,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:21,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:21,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73193505] [2023-08-27 00:35:21,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73193505] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:21,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711979683] [2023-08-27 00:35:21,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:35:21,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:21,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:21,613 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 00:35:21,622 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 00:35:21,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:35:21,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:35:21,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:35:21,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 00:35:21,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711979683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:21,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:21,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 00:35:21,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949546162] [2023-08-27 00:35:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:21,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:35:21,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 633 [2023-08-27 00:35:21,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 60 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:21,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:21,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 633 [2023-08-27 00:35:21,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:21,935 INFO L124 PetriNetUnfolderBase]: 676/986 cut-off events. [2023-08-27 00:35:21,936 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-27 00:35:21,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 986 events. 676/986 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3482 event pairs, 493 based on Foata normal form. 3/401 useless extension candidates. Maximal degree in co-relation 2016. Up to 986 conditions per place. [2023-08-27 00:35:21,942 INFO L140 encePairwiseOnDemand]: 629/633 looper letters, 56 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-27 00:35:21,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 384 flow [2023-08-27 00:35:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2023-08-27 00:35:21,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886255924170616 [2023-08-27 00:35:21,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2023-08-27 00:35:21,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2023-08-27 00:35:21,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:21,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2023-08-27 00:35:21,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:21,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:21,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:21,952 INFO L175 Difference]: Start difference. First operand has 47 places, 60 transitions, 300 flow. Second operand 3 states and 738 transitions. [2023-08-27 00:35:21,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 384 flow [2023-08-27 00:35:21,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 308 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-27 00:35:21,954 INFO L231 Difference]: Finished difference. Result has 39 places, 57 transitions, 196 flow [2023-08-27 00:35:21,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=39, PETRI_TRANSITIONS=57} [2023-08-27 00:35:21,955 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -12 predicate places. [2023-08-27 00:35:21,955 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 57 transitions, 196 flow [2023-08-27 00:35:21,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:21,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:21,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:35:21,966 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 00:35:22,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:22,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:22,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:22,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1041766992, now seen corresponding path program 1 times [2023-08-27 00:35:22,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:22,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431091451] [2023-08-27 00:35:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:22,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:22,235 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 00:35:22,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:22,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431091451] [2023-08-27 00:35:22,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431091451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:22,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:22,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:22,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262558103] [2023-08-27 00:35:22,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:22,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:22,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:22,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:22,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:22,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 633 [2023-08-27 00:35:22,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 57 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:22,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:22,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 633 [2023-08-27 00:35:22,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:22,587 INFO L124 PetriNetUnfolderBase]: 986/1422 cut-off events. [2023-08-27 00:35:22,587 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 00:35:22,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2924 conditions, 1422 events. 986/1422 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5837 event pairs, 253 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 2916. Up to 857 conditions per place. [2023-08-27 00:35:22,594 INFO L140 encePairwiseOnDemand]: 627/633 looper letters, 76 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-27 00:35:22,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 79 transitions, 403 flow [2023-08-27 00:35:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:22,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 796 transitions. [2023-08-27 00:35:22,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191679831490258 [2023-08-27 00:35:22,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 796 transitions. [2023-08-27 00:35:22,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 796 transitions. [2023-08-27 00:35:22,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:22,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 796 transitions. [2023-08-27 00:35:22,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:22,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:22,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:22,602 INFO L175 Difference]: Start difference. First operand has 39 places, 57 transitions, 196 flow. Second operand 3 states and 796 transitions. [2023-08-27 00:35:22,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 79 transitions, 403 flow [2023-08-27 00:35:22,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 79 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:22,605 INFO L231 Difference]: Finished difference. Result has 42 places, 59 transitions, 221 flow [2023-08-27 00:35:22,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=42, PETRI_TRANSITIONS=59} [2023-08-27 00:35:22,607 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -9 predicate places. [2023-08-27 00:35:22,608 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 59 transitions, 221 flow [2023-08-27 00:35:22,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:22,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:22,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:22,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 00:35:22,608 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:22,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:22,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2064959731, now seen corresponding path program 1 times [2023-08-27 00:35:22,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:22,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819252407] [2023-08-27 00:35:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:22,741 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 00:35:22,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:22,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819252407] [2023-08-27 00:35:22,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819252407] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:22,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632586608] [2023-08-27 00:35:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:22,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:22,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:22,749 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 00:35:22,752 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 00:35:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:22,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:35:22,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:22,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:22,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632586608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:22,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:22,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-27 00:35:22,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255494756] [2023-08-27 00:35:22,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:22,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:22,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:22,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:22,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:35:22,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 633 [2023-08-27 00:35:22,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 59 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:22,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:22,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 633 [2023-08-27 00:35:22,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:23,227 INFO L124 PetriNetUnfolderBase]: 1194/1740 cut-off events. [2023-08-27 00:35:23,228 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2023-08-27 00:35:23,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3925 conditions, 1740 events. 1194/1740 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7463 event pairs, 377 based on Foata normal form. 84/996 useless extension candidates. Maximal degree in co-relation 3914. Up to 1411 conditions per place. [2023-08-27 00:35:23,238 INFO L140 encePairwiseOnDemand]: 628/633 looper letters, 74 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-08-27 00:35:23,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 77 transitions, 415 flow [2023-08-27 00:35:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:23,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 779 transitions. [2023-08-27 00:35:23,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41021590310689837 [2023-08-27 00:35:23,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 779 transitions. [2023-08-27 00:35:23,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 779 transitions. [2023-08-27 00:35:23,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:23,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 779 transitions. [2023-08-27 00:35:23,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:23,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:23,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:23,247 INFO L175 Difference]: Start difference. First operand has 42 places, 59 transitions, 221 flow. Second operand 3 states and 779 transitions. [2023-08-27 00:35:23,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 77 transitions, 415 flow [2023-08-27 00:35:23,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 77 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:23,250 INFO L231 Difference]: Finished difference. Result has 43 places, 61 transitions, 236 flow [2023-08-27 00:35:23,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=43, PETRI_TRANSITIONS=61} [2023-08-27 00:35:23,251 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -8 predicate places. [2023-08-27 00:35:23,255 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 61 transitions, 236 flow [2023-08-27 00:35:23,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:23,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:23,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:23,268 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 00:35:23,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:23,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:23,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:23,464 INFO L85 PathProgramCache]: Analyzing trace with hash 410656617, now seen corresponding path program 1 times [2023-08-27 00:35:23,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:23,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959331328] [2023-08-27 00:35:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:23,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:23,572 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 00:35:23,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:23,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959331328] [2023-08-27 00:35:23,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959331328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:23,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:23,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:35:23,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295376742] [2023-08-27 00:35:23,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:23,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:23,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:23,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:23,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:23,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 633 [2023-08-27 00:35:23,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 61 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:23,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:23,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 633 [2023-08-27 00:35:23,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:23,883 INFO L124 PetriNetUnfolderBase]: 1108/1628 cut-off events. [2023-08-27 00:35:23,884 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2023-08-27 00:35:23,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3947 conditions, 1628 events. 1108/1628 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6629 event pairs, 389 based on Foata normal form. 0/1022 useless extension candidates. Maximal degree in co-relation 3935. Up to 961 conditions per place. [2023-08-27 00:35:23,893 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 76 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-27 00:35:23,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 78 transitions, 434 flow [2023-08-27 00:35:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-08-27 00:35:23,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41969457609268035 [2023-08-27 00:35:23,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-08-27 00:35:23,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-08-27 00:35:23,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:23,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-08-27 00:35:23,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:23,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:23,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:23,901 INFO L175 Difference]: Start difference. First operand has 43 places, 61 transitions, 236 flow. Second operand 3 states and 797 transitions. [2023-08-27 00:35:23,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 78 transitions, 434 flow [2023-08-27 00:35:23,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 431 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:23,904 INFO L231 Difference]: Finished difference. Result has 45 places, 61 transitions, 241 flow [2023-08-27 00:35:23,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=45, PETRI_TRANSITIONS=61} [2023-08-27 00:35:23,905 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-08-27 00:35:23,905 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 61 transitions, 241 flow [2023-08-27 00:35:23,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:23,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:23,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:23,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 00:35:23,905 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:23,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash 410656618, now seen corresponding path program 1 times [2023-08-27 00:35:23,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:23,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320239186] [2023-08-27 00:35:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:23,954 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 00:35:23,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:23,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320239186] [2023-08-27 00:35:23,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320239186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:23,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:23,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:23,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634354087] [2023-08-27 00:35:23,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:23,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:23,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:23,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 633 [2023-08-27 00:35:23,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 61 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:23,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:23,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 633 [2023-08-27 00:35:23,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:24,345 INFO L124 PetriNetUnfolderBase]: 1550/2238 cut-off events. [2023-08-27 00:35:24,345 INFO L125 PetriNetUnfolderBase]: For 779/779 co-relation queries the response was YES. [2023-08-27 00:35:24,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5609 conditions, 2238 events. 1550/2238 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9900 event pairs, 613 based on Foata normal form. 0/1610 useless extension candidates. Maximal degree in co-relation 5595. Up to 1215 conditions per place. [2023-08-27 00:35:24,359 INFO L140 encePairwiseOnDemand]: 629/633 looper letters, 81 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-27 00:35:24,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 85 transitions, 490 flow [2023-08-27 00:35:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 806 transitions. [2023-08-27 00:35:24,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42443391258557134 [2023-08-27 00:35:24,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 806 transitions. [2023-08-27 00:35:24,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 806 transitions. [2023-08-27 00:35:24,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:24,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 806 transitions. [2023-08-27 00:35:24,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:24,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:24,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:24,367 INFO L175 Difference]: Start difference. First operand has 45 places, 61 transitions, 241 flow. Second operand 3 states and 806 transitions. [2023-08-27 00:35:24,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 85 transitions, 490 flow [2023-08-27 00:35:24,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 85 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:24,370 INFO L231 Difference]: Finished difference. Result has 48 places, 63 transitions, 269 flow [2023-08-27 00:35:24,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=48, PETRI_TRANSITIONS=63} [2023-08-27 00:35:24,371 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-27 00:35:24,371 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 63 transitions, 269 flow [2023-08-27 00:35:24,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:24,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:24,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:24,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 00:35:24,372 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:24,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:24,372 INFO L85 PathProgramCache]: Analyzing trace with hash -154545341, now seen corresponding path program 1 times [2023-08-27 00:35:24,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:24,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355080785] [2023-08-27 00:35:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:24,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:24,541 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 00:35:24,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355080785] [2023-08-27 00:35:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355080785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:24,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:24,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:35:24,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724175440] [2023-08-27 00:35:24,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:24,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:35:24,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:24,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:35:24,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:35:24,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 633 [2023-08-27 00:35:24,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 63 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 240.8) internal successors, (1204), 5 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:24,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:24,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 633 [2023-08-27 00:35:24,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:24,917 INFO L124 PetriNetUnfolderBase]: 1390/2012 cut-off events. [2023-08-27 00:35:24,917 INFO L125 PetriNetUnfolderBase]: For 1680/1680 co-relation queries the response was YES. [2023-08-27 00:35:24,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5473 conditions, 2012 events. 1390/2012 cut-off events. For 1680/1680 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8317 event pairs, 671 based on Foata normal form. 28/1550 useless extension candidates. Maximal degree in co-relation 5456. Up to 1835 conditions per place. [2023-08-27 00:35:24,936 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 72 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-27 00:35:24,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 436 flow [2023-08-27 00:35:24,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:24,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:24,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 764 transitions. [2023-08-27 00:35:24,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40231700895208006 [2023-08-27 00:35:24,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 764 transitions. [2023-08-27 00:35:24,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 764 transitions. [2023-08-27 00:35:24,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:24,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 764 transitions. [2023-08-27 00:35:24,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:24,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:24,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:24,945 INFO L175 Difference]: Start difference. First operand has 48 places, 63 transitions, 269 flow. Second operand 3 states and 764 transitions. [2023-08-27 00:35:24,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 436 flow [2023-08-27 00:35:24,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 430 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:24,950 INFO L231 Difference]: Finished difference. Result has 48 places, 62 transitions, 259 flow [2023-08-27 00:35:24,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=48, PETRI_TRANSITIONS=62} [2023-08-27 00:35:24,951 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-27 00:35:24,951 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 62 transitions, 259 flow [2023-08-27 00:35:24,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 240.8) internal successors, (1204), 5 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:24,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:24,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:24,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 00:35:24,952 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:24,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:24,953 INFO L85 PathProgramCache]: Analyzing trace with hash -495986514, now seen corresponding path program 1 times [2023-08-27 00:35:24,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:24,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800891525] [2023-08-27 00:35:24,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:24,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:25,073 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 00:35:25,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:25,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800891525] [2023-08-27 00:35:25,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800891525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:25,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:25,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:35:25,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218988599] [2023-08-27 00:35:25,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:25,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:35:25,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:25,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:35:25,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:35:25,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 633 [2023-08-27 00:35:25,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 62 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 218.5) internal successors, (874), 4 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:25,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:25,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 633 [2023-08-27 00:35:25,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:25,713 INFO L124 PetriNetUnfolderBase]: 2052/2995 cut-off events. [2023-08-27 00:35:25,713 INFO L125 PetriNetUnfolderBase]: For 1989/1989 co-relation queries the response was YES. [2023-08-27 00:35:25,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7922 conditions, 2995 events. 2052/2995 cut-off events. For 1989/1989 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 13761 event pairs, 1514 based on Foata normal form. 72/2417 useless extension candidates. Maximal degree in co-relation 7905. Up to 2011 conditions per place. [2023-08-27 00:35:25,729 INFO L140 encePairwiseOnDemand]: 622/633 looper letters, 98 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2023-08-27 00:35:25,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 108 transitions, 655 flow [2023-08-27 00:35:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:35:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:35:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1149 transitions. [2023-08-27 00:35:25,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3630331753554502 [2023-08-27 00:35:25,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1149 transitions. [2023-08-27 00:35:25,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1149 transitions. [2023-08-27 00:35:25,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:25,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1149 transitions. [2023-08-27 00:35:25,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.8) internal successors, (1149), 5 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:25,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:25,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:25,741 INFO L175 Difference]: Start difference. First operand has 48 places, 62 transitions, 259 flow. Second operand 5 states and 1149 transitions. [2023-08-27 00:35:25,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 108 transitions, 655 flow [2023-08-27 00:35:25,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 108 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:25,745 INFO L231 Difference]: Finished difference. Result has 52 places, 69 transitions, 345 flow [2023-08-27 00:35:25,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=52, PETRI_TRANSITIONS=69} [2023-08-27 00:35:25,745 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-27 00:35:25,745 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 69 transitions, 345 flow [2023-08-27 00:35:25,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.5) internal successors, (874), 4 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:25,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:25,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:25,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 00:35:25,746 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:25,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:25,747 INFO L85 PathProgramCache]: Analyzing trace with hash -495986511, now seen corresponding path program 1 times [2023-08-27 00:35:25,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:25,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911277168] [2023-08-27 00:35:25,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:25,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:25,804 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 00:35:25,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:25,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911277168] [2023-08-27 00:35:25,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911277168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:25,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:25,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425375611] [2023-08-27 00:35:25,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:25,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:25,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:25,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 633 [2023-08-27 00:35:25,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 69 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:25,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:25,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 633 [2023-08-27 00:35:25,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:26,330 INFO L124 PetriNetUnfolderBase]: 2012/2927 cut-off events. [2023-08-27 00:35:26,330 INFO L125 PetriNetUnfolderBase]: For 2281/2281 co-relation queries the response was YES. [2023-08-27 00:35:26,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8153 conditions, 2927 events. 2012/2927 cut-off events. For 2281/2281 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 13086 event pairs, 829 based on Foata normal form. 0/2504 useless extension candidates. Maximal degree in co-relation 8134. Up to 2232 conditions per place. [2023-08-27 00:35:26,346 INFO L140 encePairwiseOnDemand]: 629/633 looper letters, 89 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-08-27 00:35:26,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 92 transitions, 626 flow [2023-08-27 00:35:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-08-27 00:35:26,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338072669826227 [2023-08-27 00:35:26,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-08-27 00:35:26,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-08-27 00:35:26,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:26,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-08-27 00:35:26,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:26,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:26,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:26,367 INFO L175 Difference]: Start difference. First operand has 52 places, 69 transitions, 345 flow. Second operand 3 states and 804 transitions. [2023-08-27 00:35:26,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 92 transitions, 626 flow [2023-08-27 00:35:26,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 92 transitions, 620 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:26,371 INFO L231 Difference]: Finished difference. Result has 55 places, 70 transitions, 359 flow [2023-08-27 00:35:26,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=55, PETRI_TRANSITIONS=70} [2023-08-27 00:35:26,372 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-27 00:35:26,372 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 70 transitions, 359 flow [2023-08-27 00:35:26,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:26,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:26,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:26,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 00:35:26,374 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:26,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:26,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1804288769, now seen corresponding path program 1 times [2023-08-27 00:35:26,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:26,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678060058] [2023-08-27 00:35:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:26,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:26,559 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 00:35:26,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:26,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678060058] [2023-08-27 00:35:26,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678060058] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:26,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740543005] [2023-08-27 00:35:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:26,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:26,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:26,562 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:26,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 00:35:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:26,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:35:26,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:26,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:26,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740543005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:26,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:26,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-27 00:35:26,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269928808] [2023-08-27 00:35:26,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:26,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:35:26,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:26,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:35:26,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:35:26,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 633 [2023-08-27 00:35:26,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 70 transitions, 359 flow. Second operand has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:26,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:26,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 633 [2023-08-27 00:35:26,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:27,178 INFO L124 PetriNetUnfolderBase]: 1416/2077 cut-off events. [2023-08-27 00:35:27,178 INFO L125 PetriNetUnfolderBase]: For 2411/2411 co-relation queries the response was YES. [2023-08-27 00:35:27,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 2077 events. 1416/2077 cut-off events. For 2411/2411 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8840 event pairs, 1068 based on Foata normal form. 14/1942 useless extension candidates. Maximal degree in co-relation 6299. Up to 1977 conditions per place. [2023-08-27 00:35:27,193 INFO L140 encePairwiseOnDemand]: 625/633 looper letters, 88 selfloop transitions, 10 changer transitions 0/98 dead transitions. [2023-08-27 00:35:27,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 98 transitions, 648 flow [2023-08-27 00:35:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:35:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:35:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1114 transitions. [2023-08-27 00:35:27,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35197472353870457 [2023-08-27 00:35:27,197 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1114 transitions. [2023-08-27 00:35:27,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1114 transitions. [2023-08-27 00:35:27,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:27,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1114 transitions. [2023-08-27 00:35:27,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.8) internal successors, (1114), 5 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:27,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:27,204 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:27,204 INFO L175 Difference]: Start difference. First operand has 55 places, 70 transitions, 359 flow. Second operand 5 states and 1114 transitions. [2023-08-27 00:35:27,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 98 transitions, 648 flow [2023-08-27 00:35:27,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 642 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:27,210 INFO L231 Difference]: Finished difference. Result has 58 places, 70 transitions, 382 flow [2023-08-27 00:35:27,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=382, PETRI_PLACES=58, PETRI_TRANSITIONS=70} [2023-08-27 00:35:27,211 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-27 00:35:27,211 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 70 transitions, 382 flow [2023-08-27 00:35:27,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:27,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:27,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:27,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:27,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-27 00:35:27,419 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:27,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:27,419 INFO L85 PathProgramCache]: Analyzing trace with hash 507438619, now seen corresponding path program 1 times [2023-08-27 00:35:27,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:27,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194669385] [2023-08-27 00:35:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:27,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:27,549 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 00:35:27,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:27,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194669385] [2023-08-27 00:35:27,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194669385] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:27,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434789382] [2023-08-27 00:35:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:27,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:27,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:27,551 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:27,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 00:35:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:27,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:35:27,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:35:27,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:27,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434789382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:27,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:27,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 00:35:27,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101662770] [2023-08-27 00:35:27,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:27,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:27,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:27,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:27,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:35:27,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 633 [2023-08-27 00:35:27,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 70 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:27,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:27,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 633 [2023-08-27 00:35:27,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:27,960 INFO L124 PetriNetUnfolderBase]: 694/1059 cut-off events. [2023-08-27 00:35:27,960 INFO L125 PetriNetUnfolderBase]: For 1281/1281 co-relation queries the response was YES. [2023-08-27 00:35:27,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 1059 events. 694/1059 cut-off events. For 1281/1281 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3934 event pairs, 480 based on Foata normal form. 198/1192 useless extension candidates. Maximal degree in co-relation 2898. Up to 1059 conditions per place. [2023-08-27 00:35:27,966 INFO L140 encePairwiseOnDemand]: 628/633 looper letters, 63 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-27 00:35:27,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 472 flow [2023-08-27 00:35:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2023-08-27 00:35:27,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154818325434439 [2023-08-27 00:35:27,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2023-08-27 00:35:27,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2023-08-27 00:35:27,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:27,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2023-08-27 00:35:27,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:27,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:27,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:27,975 INFO L175 Difference]: Start difference. First operand has 58 places, 70 transitions, 382 flow. Second operand 3 states and 789 transitions. [2023-08-27 00:35:27,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 472 flow [2023-08-27 00:35:27,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 448 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 00:35:27,978 INFO L231 Difference]: Finished difference. Result has 50 places, 64 transitions, 322 flow [2023-08-27 00:35:27,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=50, PETRI_TRANSITIONS=64} [2023-08-27 00:35:27,979 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-27 00:35:27,979 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 64 transitions, 322 flow [2023-08-27 00:35:27,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:27,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:27,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:27,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:28,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:28,187 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:28,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:28,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1449270476, now seen corresponding path program 1 times [2023-08-27 00:35:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:28,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989871765] [2023-08-27 00:35:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:28,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:35:28,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:28,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989871765] [2023-08-27 00:35:28,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989871765] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:28,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4116013] [2023-08-27 00:35:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:28,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:28,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:28,383 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:28,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 00:35:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:28,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 00:35:28,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:35:28,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:28,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4116013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:28,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:28,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2023-08-27 00:35:28,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521283946] [2023-08-27 00:35:28,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:28,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:28,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:28,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:28,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:35:28,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 633 [2023-08-27 00:35:28,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 64 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:28,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:28,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 633 [2023-08-27 00:35:28,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:28,695 INFO L124 PetriNetUnfolderBase]: 500/783 cut-off events. [2023-08-27 00:35:28,696 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2023-08-27 00:35:28,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 783 events. 500/783 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2740 event pairs, 322 based on Foata normal form. 82/820 useless extension candidates. Maximal degree in co-relation 2097. Up to 783 conditions per place. [2023-08-27 00:35:28,700 INFO L140 encePairwiseOnDemand]: 631/633 looper letters, 62 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-08-27 00:35:28,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 444 flow [2023-08-27 00:35:28,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:28,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:28,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 788 transitions. [2023-08-27 00:35:28,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41495523959978936 [2023-08-27 00:35:28,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 788 transitions. [2023-08-27 00:35:28,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 788 transitions. [2023-08-27 00:35:28,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:28,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 788 transitions. [2023-08-27 00:35:28,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:28,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:28,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:28,707 INFO L175 Difference]: Start difference. First operand has 50 places, 64 transitions, 322 flow. Second operand 3 states and 788 transitions. [2023-08-27 00:35:28,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 444 flow [2023-08-27 00:35:28,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 441 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:28,709 INFO L231 Difference]: Finished difference. Result has 49 places, 63 transitions, 317 flow [2023-08-27 00:35:28,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=49, PETRI_TRANSITIONS=63} [2023-08-27 00:35:28,710 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-27 00:35:28,710 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 63 transitions, 317 flow [2023-08-27 00:35:28,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:28,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:28,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:28,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:28,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:28,916 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:28,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:28,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1179484016, now seen corresponding path program 1 times [2023-08-27 00:35:28,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:28,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477691538] [2023-08-27 00:35:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:28,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:35:29,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:29,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477691538] [2023-08-27 00:35:29,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477691538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:29,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219270730] [2023-08-27 00:35:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:29,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:29,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:29,078 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:29,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 00:35:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:29,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:35:29,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:35:29,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:29,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219270730] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:29,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:29,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-27 00:35:29,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486214564] [2023-08-27 00:35:29,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:29,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:35:29,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:29,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:35:29,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:35:29,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 633 [2023-08-27 00:35:29,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 63 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:29,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:29,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 633 [2023-08-27 00:35:29,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:29,423 INFO L124 PetriNetUnfolderBase]: 428/681 cut-off events. [2023-08-27 00:35:29,423 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2023-08-27 00:35:29,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 681 events. 428/681 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2254 event pairs, 130 based on Foata normal form. 12/648 useless extension candidates. Maximal degree in co-relation 1793. Up to 293 conditions per place. [2023-08-27 00:35:29,426 INFO L140 encePairwiseOnDemand]: 629/633 looper letters, 84 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-27 00:35:29,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 88 transitions, 559 flow [2023-08-27 00:35:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:35:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:35:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1041 transitions. [2023-08-27 00:35:29,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41113744075829384 [2023-08-27 00:35:29,429 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1041 transitions. [2023-08-27 00:35:29,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1041 transitions. [2023-08-27 00:35:29,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:29,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1041 transitions. [2023-08-27 00:35:29,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 260.25) internal successors, (1041), 4 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:29,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:29,435 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:29,435 INFO L175 Difference]: Start difference. First operand has 49 places, 63 transitions, 317 flow. Second operand 4 states and 1041 transitions. [2023-08-27 00:35:29,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 88 transitions, 559 flow [2023-08-27 00:35:29,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 556 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:29,437 INFO L231 Difference]: Finished difference. Result has 51 places, 63 transitions, 322 flow [2023-08-27 00:35:29,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=51, PETRI_TRANSITIONS=63} [2023-08-27 00:35:29,438 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-27 00:35:29,438 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 63 transitions, 322 flow [2023-08-27 00:35:29,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:29,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:29,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:29,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:29,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 00:35:29,645 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:29,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1977708759, now seen corresponding path program 1 times [2023-08-27 00:35:29,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:29,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990238157] [2023-08-27 00:35:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:29,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:35:29,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:29,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990238157] [2023-08-27 00:35:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990238157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:29,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:29,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:35:29,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738578721] [2023-08-27 00:35:29,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:29,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:35:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:35:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:35:29,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 633 [2023-08-27 00:35:29,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 63 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:29,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:29,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 633 [2023-08-27 00:35:29,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:30,017 INFO L124 PetriNetUnfolderBase]: 786/1257 cut-off events. [2023-08-27 00:35:30,018 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2023-08-27 00:35:30,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3339 conditions, 1257 events. 786/1257 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5082 event pairs, 516 based on Foata normal form. 0/1188 useless extension candidates. Maximal degree in co-relation 3317. Up to 669 conditions per place. [2023-08-27 00:35:30,024 INFO L140 encePairwiseOnDemand]: 628/633 looper letters, 90 selfloop transitions, 9 changer transitions 0/99 dead transitions. [2023-08-27 00:35:30,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 99 transitions, 675 flow [2023-08-27 00:35:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:35:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:35:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 917 transitions. [2023-08-27 00:35:30,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36216429699842023 [2023-08-27 00:35:30,027 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 917 transitions. [2023-08-27 00:35:30,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 917 transitions. [2023-08-27 00:35:30,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:30,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 917 transitions. [2023-08-27 00:35:30,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.25) internal successors, (917), 4 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:30,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:30,032 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:30,032 INFO L175 Difference]: Start difference. First operand has 51 places, 63 transitions, 322 flow. Second operand 4 states and 917 transitions. [2023-08-27 00:35:30,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 99 transitions, 675 flow [2023-08-27 00:35:30,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 99 transitions, 667 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:30,035 INFO L231 Difference]: Finished difference. Result has 53 places, 63 transitions, 344 flow [2023-08-27 00:35:30,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=53, PETRI_TRANSITIONS=63} [2023-08-27 00:35:30,036 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-08-27 00:35:30,036 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 63 transitions, 344 flow [2023-08-27 00:35:30,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:30,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:30,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:30,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 00:35:30,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:30,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:30,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1977708754, now seen corresponding path program 1 times [2023-08-27 00:35:30,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:30,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330200512] [2023-08-27 00:35:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:30,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:35:30,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:30,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330200512] [2023-08-27 00:35:30,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330200512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:30,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:30,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:35:30,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592489687] [2023-08-27 00:35:30,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:30,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:35:30,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:30,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:35:30,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:35:30,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 633 [2023-08-27 00:35:30,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 63 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:30,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:30,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 633 [2023-08-27 00:35:30,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:30,585 INFO L124 PetriNetUnfolderBase]: 1334/2173 cut-off events. [2023-08-27 00:35:30,585 INFO L125 PetriNetUnfolderBase]: For 1008/1008 co-relation queries the response was YES. [2023-08-27 00:35:30,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5586 conditions, 2173 events. 1334/2173 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10266 event pairs, 916 based on Foata normal form. 56/2181 useless extension candidates. Maximal degree in co-relation 5563. Up to 1223 conditions per place. [2023-08-27 00:35:30,594 INFO L140 encePairwiseOnDemand]: 627/633 looper letters, 71 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2023-08-27 00:35:30,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 591 flow [2023-08-27 00:35:30,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:35:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:35:30,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 915 transitions. [2023-08-27 00:35:30,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613744075829384 [2023-08-27 00:35:30,597 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 915 transitions. [2023-08-27 00:35:30,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 915 transitions. [2023-08-27 00:35:30,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:30,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 915 transitions. [2023-08-27 00:35:30,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.75) internal successors, (915), 4 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:30,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:30,603 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:30,603 INFO L175 Difference]: Start difference. First operand has 53 places, 63 transitions, 344 flow. Second operand 4 states and 915 transitions. [2023-08-27 00:35:30,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 591 flow [2023-08-27 00:35:30,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 85 transitions, 575 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:30,606 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 374 flow [2023-08-27 00:35:30,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2023-08-27 00:35:30,607 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-27 00:35:30,607 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 374 flow [2023-08-27 00:35:30,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:30,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:30,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:30,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 00:35:30,608 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:30,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1642348824, now seen corresponding path program 1 times [2023-08-27 00:35:30,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:30,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647428151] [2023-08-27 00:35:30,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:30,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:35:30,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:30,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647428151] [2023-08-27 00:35:30,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647428151] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:30,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257127807] [2023-08-27 00:35:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:30,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:30,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:30,767 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:30,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 00:35:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:30,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:35:30,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:35:30,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:30,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257127807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:30,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:30,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 00:35:30,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149348967] [2023-08-27 00:35:30,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:30,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:30,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:35:30,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 633 [2023-08-27 00:35:30,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:30,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:30,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 633 [2023-08-27 00:35:30,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:31,237 INFO L124 PetriNetUnfolderBase]: 1132/1903 cut-off events. [2023-08-27 00:35:31,237 INFO L125 PetriNetUnfolderBase]: For 967/967 co-relation queries the response was YES. [2023-08-27 00:35:31,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 1903 events. 1132/1903 cut-off events. For 967/967 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9064 event pairs, 800 based on Foata normal form. 88/1986 useless extension candidates. Maximal degree in co-relation 4777. Up to 1903 conditions per place. [2023-08-27 00:35:31,245 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 59 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-08-27 00:35:31,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 473 flow [2023-08-27 00:35:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 784 transitions. [2023-08-27 00:35:31,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41284886782517116 [2023-08-27 00:35:31,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 784 transitions. [2023-08-27 00:35:31,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 784 transitions. [2023-08-27 00:35:31,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:31,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 784 transitions. [2023-08-27 00:35:31,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:31,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:31,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:31,252 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 374 flow. Second operand 3 states and 784 transitions. [2023-08-27 00:35:31,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 473 flow [2023-08-27 00:35:31,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 418 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-27 00:35:31,256 INFO L231 Difference]: Finished difference. Result has 49 places, 60 transitions, 300 flow [2023-08-27 00:35:31,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=49, PETRI_TRANSITIONS=60} [2023-08-27 00:35:31,256 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-27 00:35:31,256 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 60 transitions, 300 flow [2023-08-27 00:35:31,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:31,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:31,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:31,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:31,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 00:35:31,463 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:31,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:31,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1041802729, now seen corresponding path program 1 times [2023-08-27 00:35:31,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:31,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239477132] [2023-08-27 00:35:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:31,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:35:31,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:31,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239477132] [2023-08-27 00:35:31,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239477132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:31,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246495899] [2023-08-27 00:35:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:31,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:31,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:31,644 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:31,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 00:35:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:31,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:35:31,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:35:31,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:35:31,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246495899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:31,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:35:31,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 00:35:31,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839665309] [2023-08-27 00:35:31,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:31,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:31,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:35:31,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 633 [2023-08-27 00:35:31,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 60 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:31,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:31,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 633 [2023-08-27 00:35:31,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:31,957 INFO L124 PetriNetUnfolderBase]: 544/931 cut-off events. [2023-08-27 00:35:31,957 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-08-27 00:35:31,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 931 events. 544/931 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3754 event pairs, 372 based on Foata normal form. 16/942 useless extension candidates. Maximal degree in co-relation 2311. Up to 931 conditions per place. [2023-08-27 00:35:31,964 INFO L140 encePairwiseOnDemand]: 631/633 looper letters, 58 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-27 00:35:31,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 412 flow [2023-08-27 00:35:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2023-08-27 00:35:31,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41179568193786203 [2023-08-27 00:35:31,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2023-08-27 00:35:31,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2023-08-27 00:35:31,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:31,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2023-08-27 00:35:31,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:31,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:31,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:31,971 INFO L175 Difference]: Start difference. First operand has 49 places, 60 transitions, 300 flow. Second operand 3 states and 782 transitions. [2023-08-27 00:35:31,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 412 flow [2023-08-27 00:35:31,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:35:31,974 INFO L231 Difference]: Finished difference. Result has 48 places, 59 transitions, 288 flow [2023-08-27 00:35:31,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=48, PETRI_TRANSITIONS=59} [2023-08-27 00:35:31,974 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-27 00:35:31,975 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 59 transitions, 288 flow [2023-08-27 00:35:31,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:31,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:31,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:31,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:32,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:32,185 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:32,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:32,186 INFO L85 PathProgramCache]: Analyzing trace with hash -663401649, now seen corresponding path program 1 times [2023-08-27 00:35:32,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:32,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322981725] [2023-08-27 00:35:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:32,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:32,317 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 00:35:32,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:32,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322981725] [2023-08-27 00:35:32,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322981725] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:35:32,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:35:32,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:35:32,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701263344] [2023-08-27 00:35:32,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:35:32,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:35:32,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:32,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:35:32,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:35:32,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 633 [2023-08-27 00:35:32,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 59 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:32,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:32,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 633 [2023-08-27 00:35:32,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:32,430 INFO L124 PetriNetUnfolderBase]: 280/479 cut-off events. [2023-08-27 00:35:32,430 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-08-27 00:35:32,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 479 events. 280/479 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1521 event pairs, 118 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 1204. Up to 273 conditions per place. [2023-08-27 00:35:32,433 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 56 selfloop transitions, 2 changer transitions 10/68 dead transitions. [2023-08-27 00:35:32,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 68 transitions, 445 flow [2023-08-27 00:35:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:35:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:35:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 792 transitions. [2023-08-27 00:35:32,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41706161137440756 [2023-08-27 00:35:32,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 792 transitions. [2023-08-27 00:35:32,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 792 transitions. [2023-08-27 00:35:32,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:32,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 792 transitions. [2023-08-27 00:35:32,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:32,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:32,439 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:32,439 INFO L175 Difference]: Start difference. First operand has 48 places, 59 transitions, 288 flow. Second operand 3 states and 792 transitions. [2023-08-27 00:35:32,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 68 transitions, 445 flow [2023-08-27 00:35:32,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:35:32,442 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 227 flow [2023-08-27 00:35:32,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-08-27 00:35:32,442 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-27 00:35:32,442 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 227 flow [2023-08-27 00:35:32,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:32,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:32,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:32,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 00:35:32,443 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:32,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:32,443 INFO L85 PathProgramCache]: Analyzing trace with hash -535258354, now seen corresponding path program 1 times [2023-08-27 00:35:32,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:32,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585720069] [2023-08-27 00:35:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:32,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:35:32,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:32,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585720069] [2023-08-27 00:35:32,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585720069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:32,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2240337] [2023-08-27 00:35:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:32,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:32,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:32,667 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:32,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 00:35:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:32,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 00:35:32,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:35:32,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:35:33,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2240337] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:33,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:33,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 6 [2023-08-27 00:35:33,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789812264] [2023-08-27 00:35:33,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:33,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 00:35:33,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:33,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 00:35:33,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:35:33,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 633 [2023-08-27 00:35:33,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 227 flow. Second operand has 8 states, 8 states have (on average 250.875) internal successors, (2007), 8 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:33,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 633 [2023-08-27 00:35:33,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:33,510 INFO L124 PetriNetUnfolderBase]: 233/379 cut-off events. [2023-08-27 00:35:33,510 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2023-08-27 00:35:33,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 379 events. 233/379 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1048 event pairs, 53 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 987. Up to 189 conditions per place. [2023-08-27 00:35:33,512 INFO L140 encePairwiseOnDemand]: 629/633 looper letters, 54 selfloop transitions, 3 changer transitions 13/70 dead transitions. [2023-08-27 00:35:33,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 413 flow [2023-08-27 00:35:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:35:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:35:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1019 transitions. [2023-08-27 00:35:33,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40244865718799366 [2023-08-27 00:35:33,516 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1019 transitions. [2023-08-27 00:35:33,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1019 transitions. [2023-08-27 00:35:33,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:35:33,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1019 transitions. [2023-08-27 00:35:33,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 254.75) internal successors, (1019), 4 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,523 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,523 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 227 flow. Second operand 4 states and 1019 transitions. [2023-08-27 00:35:33,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 413 flow [2023-08-27 00:35:33,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 393 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-27 00:35:33,525 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 217 flow [2023-08-27 00:35:33,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2023-08-27 00:35:33,526 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-27 00:35:33,526 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 217 flow [2023-08-27 00:35:33,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 250.875) internal successors, (2007), 8 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:33,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:35:33,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:35:33,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 00:35:33,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-27 00:35:33,733 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:35:33,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:35:33,733 INFO L85 PathProgramCache]: Analyzing trace with hash -480871935, now seen corresponding path program 1 times [2023-08-27 00:35:33,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:35:33,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448984806] [2023-08-27 00:35:33,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:33,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:35:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:34,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:35:34,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448984806] [2023-08-27 00:35:34,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448984806] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:35:34,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868216452] [2023-08-27 00:35:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:35:34,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:35:34,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:35:34,472 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:35:34,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 00:35:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:35:34,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 00:35:34,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:35:34,730 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 15 treesize of output 11 [2023-08-27 00:35:34,834 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 6 treesize of output 5 [2023-08-27 00:35:34,872 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 6 treesize of output 5 [2023-08-27 00:35:34,916 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 6 treesize of output 5 [2023-08-27 00:35:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:35,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:35:41,093 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:35:41,094 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 61 treesize of output 50 [2023-08-27 00:35:41,106 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-27 00:35:41,106 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 181 [2023-08-27 00:35:41,135 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 00:35:41,136 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 178 treesize of output 130 [2023-08-27 00:35:41,149 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 00:35:41,149 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 130 treesize of output 106 [2023-08-27 00:35:41,167 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 00:35:41,168 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 58 treesize of output 46 [2023-08-27 00:35:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:35:41,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868216452] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:35:41,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:35:41,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 21 [2023-08-27 00:35:41,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083043113] [2023-08-27 00:35:41,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:35:41,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 00:35:41,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:35:41,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 00:35:41,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=375, Unknown=11, NotChecked=0, Total=506 [2023-08-27 00:35:41,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 633 [2023-08-27 00:35:41,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 217 flow. Second operand has 23 states, 23 states have (on average 160.8695652173913) internal successors, (3700), 23 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:35:41,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:35:41,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 633 [2023-08-27 00:35:41,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:35:44,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:35:46,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:35:49,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:35:53,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:35:55,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:35:57,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:00,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:03,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:05,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:07,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:09,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:11,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:13,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:15,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:17,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:19,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:21,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:23,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:25,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:27,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:29,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:31,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:33,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:35,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:37,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:36:37,577 INFO L124 PetriNetUnfolderBase]: 723/1185 cut-off events. [2023-08-27 00:36:37,577 INFO L125 PetriNetUnfolderBase]: For 621/621 co-relation queries the response was YES. [2023-08-27 00:36:37,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3093 conditions, 1185 events. 723/1185 cut-off events. For 621/621 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5058 event pairs, 94 based on Foata normal form. 3/1181 useless extension candidates. Maximal degree in co-relation 3073. Up to 380 conditions per place. [2023-08-27 00:36:37,582 INFO L140 encePairwiseOnDemand]: 620/633 looper letters, 113 selfloop transitions, 44 changer transitions 46/203 dead transitions. [2023-08-27 00:36:37,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 203 transitions, 1097 flow [2023-08-27 00:36:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 00:36:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 00:36:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3489 transitions. [2023-08-27 00:36:37,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26246896863010605 [2023-08-27 00:36:37,592 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3489 transitions. [2023-08-27 00:36:37,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3489 transitions. [2023-08-27 00:36:37,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:37,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3489 transitions. [2023-08-27 00:36:37,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 166.14285714285714) internal successors, (3489), 21 states have internal predecessors, (3489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:37,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 633.0) internal successors, (13926), 22 states have internal predecessors, (13926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:37,610 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 633.0) internal successors, (13926), 22 states have internal predecessors, (13926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:37,610 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 217 flow. Second operand 21 states and 3489 transitions. [2023-08-27 00:36:37,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 203 transitions, 1097 flow [2023-08-27 00:36:37,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 203 transitions, 1082 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:36:37,615 INFO L231 Difference]: Finished difference. Result has 74 places, 87 transitions, 559 flow [2023-08-27 00:36:37,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=559, PETRI_PLACES=74, PETRI_TRANSITIONS=87} [2023-08-27 00:36:37,615 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2023-08-27 00:36:37,615 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 87 transitions, 559 flow [2023-08-27 00:36:37,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 160.8695652173913) internal successors, (3700), 23 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:37,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:37,616 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:37,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:37,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 00:36:37,817 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:36:37,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash -476691087, now seen corresponding path program 2 times [2023-08-27 00:36:37,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:37,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061419745] [2023-08-27 00:36:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:37,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:38,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:38,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061419745] [2023-08-27 00:36:38,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061419745] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:38,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502675671] [2023-08-27 00:36:38,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:36:38,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:38,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:38,254 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:38,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 00:36:38,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:36:38,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:38,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 00:36:38,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:38,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:40,638 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:40,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 509 treesize of output 600 [2023-08-27 00:36:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:43,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502675671] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:43,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:43,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-08-27 00:36:43,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625370508] [2023-08-27 00:36:43,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:43,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 00:36:43,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:43,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 00:36:43,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-27 00:36:43,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 633 [2023-08-27 00:36:43,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 559 flow. Second operand has 14 states, 14 states have (on average 178.35714285714286) internal successors, (2497), 14 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:43,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:43,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 633 [2023-08-27 00:36:43,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:44,898 INFO L124 PetriNetUnfolderBase]: 1073/1838 cut-off events. [2023-08-27 00:36:44,898 INFO L125 PetriNetUnfolderBase]: For 1601/1601 co-relation queries the response was YES. [2023-08-27 00:36:44,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5277 conditions, 1838 events. 1073/1838 cut-off events. For 1601/1601 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9085 event pairs, 222 based on Foata normal form. 168/2002 useless extension candidates. Maximal degree in co-relation 5248. Up to 348 conditions per place. [2023-08-27 00:36:44,908 INFO L140 encePairwiseOnDemand]: 626/633 looper letters, 134 selfloop transitions, 31 changer transitions 26/191 dead transitions. [2023-08-27 00:36:44,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 191 transitions, 1338 flow [2023-08-27 00:36:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 00:36:44,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 00:36:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2042 transitions. [2023-08-27 00:36:44,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932643975298004 [2023-08-27 00:36:44,913 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2042 transitions. [2023-08-27 00:36:44,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2042 transitions. [2023-08-27 00:36:44,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:44,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2042 transitions. [2023-08-27 00:36:44,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.63636363636363) internal successors, (2042), 11 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:44,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 633.0) internal successors, (7596), 12 states have internal predecessors, (7596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:44,922 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 633.0) internal successors, (7596), 12 states have internal predecessors, (7596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:44,922 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 559 flow. Second operand 11 states and 2042 transitions. [2023-08-27 00:36:44,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 191 transitions, 1338 flow [2023-08-27 00:36:44,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 191 transitions, 1314 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-08-27 00:36:44,929 INFO L231 Difference]: Finished difference. Result has 88 places, 90 transitions, 677 flow [2023-08-27 00:36:44,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=677, PETRI_PLACES=88, PETRI_TRANSITIONS=90} [2023-08-27 00:36:44,930 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2023-08-27 00:36:44,930 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 90 transitions, 677 flow [2023-08-27 00:36:44,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 178.35714285714286) internal successors, (2497), 14 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:44,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:44,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:44,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:45,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 00:36:45,137 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:36:45,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:45,138 INFO L85 PathProgramCache]: Analyzing trace with hash -686223059, now seen corresponding path program 1 times [2023-08-27 00:36:45,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:45,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904251837] [2023-08-27 00:36:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:45,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:45,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904251837] [2023-08-27 00:36:45,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904251837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187422914] [2023-08-27 00:36:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:45,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:45,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:45,420 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:45,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 00:36:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:45,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:36:45,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:45,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:36:45,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187422914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:45,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:36:45,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-08-27 00:36:45,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310978284] [2023-08-27 00:36:45,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:45,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:36:45,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:45,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:36:45,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:36:45,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 633 [2023-08-27 00:36:45,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 90 transitions, 677 flow. Second operand has 5 states, 5 states have (on average 215.6) internal successors, (1078), 5 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:45,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:45,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 633 [2023-08-27 00:36:45,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:46,109 INFO L124 PetriNetUnfolderBase]: 1629/2856 cut-off events. [2023-08-27 00:36:46,109 INFO L125 PetriNetUnfolderBase]: For 5651/5651 co-relation queries the response was YES. [2023-08-27 00:36:46,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8802 conditions, 2856 events. 1629/2856 cut-off events. For 5651/5651 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16148 event pairs, 1184 based on Foata normal form. 84/2936 useless extension candidates. Maximal degree in co-relation 8766. Up to 1364 conditions per place. [2023-08-27 00:36:46,121 INFO L140 encePairwiseOnDemand]: 625/633 looper letters, 110 selfloop transitions, 25 changer transitions 0/135 dead transitions. [2023-08-27 00:36:46,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 135 transitions, 1262 flow [2023-08-27 00:36:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:36:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:36:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1327 transitions. [2023-08-27 00:36:46,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34939441811479727 [2023-08-27 00:36:46,124 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1327 transitions. [2023-08-27 00:36:46,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1327 transitions. [2023-08-27 00:36:46,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:46,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1327 transitions. [2023-08-27 00:36:46,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.16666666666666) internal successors, (1327), 6 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:46,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:46,130 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:46,130 INFO L175 Difference]: Start difference. First operand has 88 places, 90 transitions, 677 flow. Second operand 6 states and 1327 transitions. [2023-08-27 00:36:46,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 135 transitions, 1262 flow [2023-08-27 00:36:46,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 135 transitions, 1182 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-27 00:36:46,147 INFO L231 Difference]: Finished difference. Result has 89 places, 89 transitions, 668 flow [2023-08-27 00:36:46,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=668, PETRI_PLACES=89, PETRI_TRANSITIONS=89} [2023-08-27 00:36:46,148 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2023-08-27 00:36:46,148 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 89 transitions, 668 flow [2023-08-27 00:36:46,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.6) internal successors, (1078), 5 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:46,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:46,149 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:46,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:46,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:46,354 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:36:46,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash -26739175, now seen corresponding path program 3 times [2023-08-27 00:36:46,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:46,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976626464] [2023-08-27 00:36:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:46,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:46,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:46,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976626464] [2023-08-27 00:36:46,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976626464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:46,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779156163] [2023-08-27 00:36:46,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:36:46,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:46,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:46,683 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:46,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 00:36:46,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 00:36:46,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:46,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 00:36:46,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:47,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:47,657 INFO L322 Elim1Store]: treesize reduction 38, result has 77.5 percent of original size [2023-08-27 00:36:47,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 578 treesize of output 628 [2023-08-27 00:36:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:48,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779156163] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:48,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:48,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 00:36:48,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936170379] [2023-08-27 00:36:48,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:48,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:36:48,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:48,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:36:48,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-27 00:36:48,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 633 [2023-08-27 00:36:48,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 89 transitions, 668 flow. Second operand has 12 states, 12 states have (on average 175.66666666666666) internal successors, (2108), 12 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:48,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:48,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 633 [2023-08-27 00:36:48,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:49,297 INFO L124 PetriNetUnfolderBase]: 1441/2549 cut-off events. [2023-08-27 00:36:49,297 INFO L125 PetriNetUnfolderBase]: For 3967/3967 co-relation queries the response was YES. [2023-08-27 00:36:49,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 2549 events. 1441/2549 cut-off events. For 3967/3967 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14177 event pairs, 386 based on Foata normal form. 24/2572 useless extension candidates. Maximal degree in co-relation 7543. Up to 612 conditions per place. [2023-08-27 00:36:49,309 INFO L140 encePairwiseOnDemand]: 624/633 looper letters, 85 selfloop transitions, 34 changer transitions 39/158 dead transitions. [2023-08-27 00:36:49,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 158 transitions, 1236 flow [2023-08-27 00:36:49,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 00:36:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 00:36:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1818 transitions. [2023-08-27 00:36:49,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28720379146919434 [2023-08-27 00:36:49,313 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1818 transitions. [2023-08-27 00:36:49,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1818 transitions. [2023-08-27 00:36:49,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:49,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1818 transitions. [2023-08-27 00:36:49,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 181.8) internal successors, (1818), 10 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:49,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 633.0) internal successors, (6963), 11 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:49,323 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 633.0) internal successors, (6963), 11 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:49,323 INFO L175 Difference]: Start difference. First operand has 89 places, 89 transitions, 668 flow. Second operand 10 states and 1818 transitions. [2023-08-27 00:36:49,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 158 transitions, 1236 flow [2023-08-27 00:36:49,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 158 transitions, 1209 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:36:49,338 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 672 flow [2023-08-27 00:36:49,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=672, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2023-08-27 00:36:49,338 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 44 predicate places. [2023-08-27 00:36:49,338 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 672 flow [2023-08-27 00:36:49,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.66666666666666) internal successors, (2108), 12 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:49,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:49,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:49,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-27 00:36:49,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:49,546 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:36:49,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:49,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1623883471, now seen corresponding path program 1 times [2023-08-27 00:36:49,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:49,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948958949] [2023-08-27 00:36:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:49,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:36:49,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:49,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948958949] [2023-08-27 00:36:49,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948958949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:36:49,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:36:49,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 00:36:49,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839825740] [2023-08-27 00:36:49,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:36:49,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:36:49,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:49,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:36:49,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:36:49,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 633 [2023-08-27 00:36:49,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 672 flow. Second operand has 5 states, 5 states have (on average 241.8) internal successors, (1209), 5 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:49,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:49,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 633 [2023-08-27 00:36:49,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:50,135 INFO L124 PetriNetUnfolderBase]: 1013/1781 cut-off events. [2023-08-27 00:36:50,135 INFO L125 PetriNetUnfolderBase]: For 3720/3720 co-relation queries the response was YES. [2023-08-27 00:36:50,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5549 conditions, 1781 events. 1013/1781 cut-off events. For 3720/3720 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8887 event pairs, 502 based on Foata normal form. 24/1804 useless extension candidates. Maximal degree in co-relation 5513. Up to 963 conditions per place. [2023-08-27 00:36:50,145 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 84 selfloop transitions, 9 changer transitions 6/99 dead transitions. [2023-08-27 00:36:50,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 99 transitions, 893 flow [2023-08-27 00:36:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:36:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:36:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 996 transitions. [2023-08-27 00:36:50,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933649289099526 [2023-08-27 00:36:50,147 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 996 transitions. [2023-08-27 00:36:50,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 996 transitions. [2023-08-27 00:36:50,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:50,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 996 transitions. [2023-08-27 00:36:50,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:50,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:50,154 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:50,154 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 672 flow. Second operand 4 states and 996 transitions. [2023-08-27 00:36:50,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 99 transitions, 893 flow [2023-08-27 00:36:50,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 99 transitions, 832 flow, removed 8 selfloop flow, removed 10 redundant places. [2023-08-27 00:36:50,163 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 600 flow [2023-08-27 00:36:50,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=600, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2023-08-27 00:36:50,164 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2023-08-27 00:36:50,164 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 600 flow [2023-08-27 00:36:50,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 241.8) internal successors, (1209), 5 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:50,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:50,165 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:50,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 00:36:50,165 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:36:50,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:50,165 INFO L85 PathProgramCache]: Analyzing trace with hash 274155322, now seen corresponding path program 1 times [2023-08-27 00:36:50,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:50,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569654360] [2023-08-27 00:36:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:50,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:36:51,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569654360] [2023-08-27 00:36:51,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569654360] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845450486] [2023-08-27 00:36:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:51,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:51,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:51,167 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:51,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 00:36:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:51,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 00:36:51,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:51,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:36:52,531 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:36:52,532 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 363 treesize of output 470 [2023-08-27 00:36:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:36:56,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845450486] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:36:56,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:36:56,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 13 [2023-08-27 00:36:56,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281185493] [2023-08-27 00:36:56,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:36:56,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 00:36:56,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:36:56,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 00:36:56,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-27 00:36:56,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 633 [2023-08-27 00:36:56,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 600 flow. Second operand has 15 states, 15 states have (on average 170.73333333333332) internal successors, (2561), 15 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:56,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:36:56,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 633 [2023-08-27 00:36:56,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:36:57,530 INFO L124 PetriNetUnfolderBase]: 1276/2266 cut-off events. [2023-08-27 00:36:57,530 INFO L125 PetriNetUnfolderBase]: For 4090/4090 co-relation queries the response was YES. [2023-08-27 00:36:57,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6821 conditions, 2266 events. 1276/2266 cut-off events. For 4090/4090 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12424 event pairs, 357 based on Foata normal form. 3/2268 useless extension candidates. Maximal degree in co-relation 6790. Up to 477 conditions per place. [2023-08-27 00:36:57,541 INFO L140 encePairwiseOnDemand]: 622/633 looper letters, 81 selfloop transitions, 48 changer transitions 44/173 dead transitions. [2023-08-27 00:36:57,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 173 transitions, 1346 flow [2023-08-27 00:36:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 00:36:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 00:36:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2775 transitions. [2023-08-27 00:36:57,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27399289099526064 [2023-08-27 00:36:57,545 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2775 transitions. [2023-08-27 00:36:57,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2775 transitions. [2023-08-27 00:36:57,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:36:57,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2775 transitions. [2023-08-27 00:36:57,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 173.4375) internal successors, (2775), 16 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:57,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 633.0) internal successors, (10761), 17 states have internal predecessors, (10761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:57,557 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 633.0) internal successors, (10761), 17 states have internal predecessors, (10761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:57,558 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 600 flow. Second operand 16 states and 2775 transitions. [2023-08-27 00:36:57,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 173 transitions, 1346 flow [2023-08-27 00:36:57,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 173 transitions, 1322 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:36:57,574 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 804 flow [2023-08-27 00:36:57,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=804, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2023-08-27 00:36:57,574 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 44 predicate places. [2023-08-27 00:36:57,574 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 804 flow [2023-08-27 00:36:57,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 170.73333333333332) internal successors, (2561), 15 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:36:57,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:36:57,575 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:36:57,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 00:36:57,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 00:36:57,781 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:36:57,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:36:57,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1149587993, now seen corresponding path program 2 times [2023-08-27 00:36:57,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:36:57,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305287732] [2023-08-27 00:36:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:36:57,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:36:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:36:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:58,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:36:58,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305287732] [2023-08-27 00:36:58,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305287732] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:36:58,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809945838] [2023-08-27 00:36:58,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:36:58,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:36:58,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:36:58,654 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:36:58,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 00:36:58,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:36:58,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:36:58,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:36:58,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:36:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:36:59,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:01,575 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:01,576 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 427 treesize of output 625 [2023-08-27 00:37:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:37:05,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809945838] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:05,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:05,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-08-27 00:37:05,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309407263] [2023-08-27 00:37:05,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:05,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 00:37:05,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:05,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 00:37:05,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-08-27 00:37:05,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 633 [2023-08-27 00:37:05,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 804 flow. Second operand has 16 states, 16 states have (on average 170.8125) internal successors, (2733), 16 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:05,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:05,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 633 [2023-08-27 00:37:05,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:06,937 INFO L124 PetriNetUnfolderBase]: 1259/2210 cut-off events. [2023-08-27 00:37:06,937 INFO L125 PetriNetUnfolderBase]: For 4563/4563 co-relation queries the response was YES. [2023-08-27 00:37:06,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6828 conditions, 2210 events. 1259/2210 cut-off events. For 4563/4563 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11685 event pairs, 252 based on Foata normal form. 48/2257 useless extension candidates. Maximal degree in co-relation 6794. Up to 392 conditions per place. [2023-08-27 00:37:06,945 INFO L140 encePairwiseOnDemand]: 626/633 looper letters, 130 selfloop transitions, 39 changer transitions 52/221 dead transitions. [2023-08-27 00:37:06,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 221 transitions, 1712 flow [2023-08-27 00:37:06,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 00:37:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 00:37:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2492 transitions. [2023-08-27 00:37:06,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2812006319115324 [2023-08-27 00:37:06,949 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2492 transitions. [2023-08-27 00:37:06,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2492 transitions. [2023-08-27 00:37:06,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:06,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2492 transitions. [2023-08-27 00:37:06,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 178.0) internal successors, (2492), 14 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:06,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 633.0) internal successors, (9495), 15 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:06,958 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 633.0) internal successors, (9495), 15 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:06,958 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 804 flow. Second operand 14 states and 2492 transitions. [2023-08-27 00:37:06,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 221 transitions, 1712 flow [2023-08-27 00:37:06,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 221 transitions, 1588 flow, removed 32 selfloop flow, removed 9 redundant places. [2023-08-27 00:37:06,971 INFO L231 Difference]: Finished difference. Result has 99 places, 102 transitions, 891 flow [2023-08-27 00:37:06,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=891, PETRI_PLACES=99, PETRI_TRANSITIONS=102} [2023-08-27 00:37:06,972 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2023-08-27 00:37:06,972 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 102 transitions, 891 flow [2023-08-27 00:37:06,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 170.8125) internal successors, (2733), 16 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:06,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:06,973 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:06,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-27 00:37:07,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 00:37:07,179 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:37:07,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:07,179 INFO L85 PathProgramCache]: Analyzing trace with hash 218372144, now seen corresponding path program 2 times [2023-08-27 00:37:07,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:07,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399734477] [2023-08-27 00:37:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:07,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:37:09,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399734477] [2023-08-27 00:37:09,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399734477] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:09,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703508014] [2023-08-27 00:37:09,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:37:09,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:09,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:09,032 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:09,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 00:37:09,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:37:09,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:37:09,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 00:37:09,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:09,405 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 00:37:09,488 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 6 treesize of output 5 [2023-08-27 00:37:09,569 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 6 treesize of output 5 [2023-08-27 00:37:09,642 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 6 treesize of output 5 [2023-08-27 00:37:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:37:10,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:21,278 WARN L234 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 132 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 00:37:23,886 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:23,886 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 62 treesize of output 51 [2023-08-27 00:37:23,919 INFO L322 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-08-27 00:37:23,920 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13558 treesize of output 12486 [2023-08-27 00:37:24,000 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:24,001 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 1550 treesize of output 1463 [2023-08-27 00:37:24,032 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:24,032 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 1446 treesize of output 1047 [2023-08-27 00:37:24,065 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:24,066 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 1030 treesize of output 839 [2023-08-27 00:37:24,426 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:24,426 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 61 treesize of output 50 [2023-08-27 00:37:24,437 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-27 00:37:24,437 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 806 treesize of output 745 [2023-08-27 00:37:24,451 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 00:37:24,452 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 78 treesize of output 54 [2023-08-27 00:37:24,460 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 00:37:24,460 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 32 treesize of output 20 [2023-08-27 00:37:24,489 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 00:37:24,489 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 90 treesize of output 42 [2023-08-27 00:37:24,524 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:24,525 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 61 treesize of output 50 [2023-08-27 00:37:24,536 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-27 00:37:24,536 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 398 treesize of output 369 [2023-08-27 00:37:24,556 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 00:37:24,556 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 178 treesize of output 130 [2023-08-27 00:37:24,565 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 00:37:24,565 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2023-08-27 00:37:24,576 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 00:37:24,576 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 70 treesize of output 46 [2023-08-27 00:37:24,641 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:24,642 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 62 treesize of output 51 [2023-08-27 00:37:24,661 INFO L322 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-08-27 00:37:24,661 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3382 treesize of output 3126 [2023-08-27 00:37:24,738 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:24,739 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 1550 treesize of output 1359 [2023-08-27 00:37:24,777 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:24,778 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1342 treesize of output 943 [2023-08-27 00:37:24,820 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:37:24,820 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 926 treesize of output 839 [2023-08-27 00:37:26,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:37:26,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703508014] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:26,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:26,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 28 [2023-08-27 00:37:26,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182200094] [2023-08-27 00:37:26,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:26,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 00:37:26,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:26,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 00:37:26,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=704, Unknown=17, NotChecked=0, Total=870 [2023-08-27 00:37:26,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 633 [2023-08-27 00:37:26,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 102 transitions, 891 flow. Second operand has 30 states, 30 states have (on average 145.33333333333334) internal successors, (4360), 30 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:26,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:26,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 633 [2023-08-27 00:37:26,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:37:29,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:37:36,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 00:37:55,052 INFO L124 PetriNetUnfolderBase]: 3709/6667 cut-off events. [2023-08-27 00:37:55,052 INFO L125 PetriNetUnfolderBase]: For 14875/14875 co-relation queries the response was YES. [2023-08-27 00:37:55,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19768 conditions, 6667 events. 3709/6667 cut-off events. For 14875/14875 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 46602 event pairs, 684 based on Foata normal form. 3/6669 useless extension candidates. Maximal degree in co-relation 19733. Up to 1242 conditions per place. [2023-08-27 00:37:55,075 INFO L140 encePairwiseOnDemand]: 614/633 looper letters, 99 selfloop transitions, 131 changer transitions 108/338 dead transitions. [2023-08-27 00:37:55,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 338 transitions, 2830 flow [2023-08-27 00:37:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-27 00:37:55,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-27 00:37:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4807 transitions. [2023-08-27 00:37:55,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23731240126382305 [2023-08-27 00:37:55,083 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4807 transitions. [2023-08-27 00:37:55,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4807 transitions. [2023-08-27 00:37:55,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:37:55,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4807 transitions. [2023-08-27 00:37:55,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 150.21875) internal successors, (4807), 32 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:55,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 633.0) internal successors, (20889), 33 states have internal predecessors, (20889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:55,103 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 633.0) internal successors, (20889), 33 states have internal predecessors, (20889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:55,103 INFO L175 Difference]: Start difference. First operand has 99 places, 102 transitions, 891 flow. Second operand 32 states and 4807 transitions. [2023-08-27 00:37:55,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 338 transitions, 2830 flow [2023-08-27 00:37:55,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 338 transitions, 2602 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-27 00:37:55,173 INFO L231 Difference]: Finished difference. Result has 129 places, 174 transitions, 1882 flow [2023-08-27 00:37:55,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1882, PETRI_PLACES=129, PETRI_TRANSITIONS=174} [2023-08-27 00:37:55,173 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 78 predicate places. [2023-08-27 00:37:55,174 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 174 transitions, 1882 flow [2023-08-27 00:37:55,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 145.33333333333334) internal successors, (4360), 30 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:55,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:37:55,174 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:37:55,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 00:37:55,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 00:37:55,376 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:37:55,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:37:55,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1604148473, now seen corresponding path program 3 times [2023-08-27 00:37:55,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:37:55,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884214305] [2023-08-27 00:37:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:37:55,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:37:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:37:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:37:56,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:37:56,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884214305] [2023-08-27 00:37:56,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884214305] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:37:56,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680147953] [2023-08-27 00:37:56,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:37:56,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:37:56,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:37:56,245 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:37:56,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 00:37:56,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 00:37:56,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:37:56,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 00:37:56,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:37:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:37:56,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:37:58,527 INFO L322 Elim1Store]: treesize reduction 38, result has 77.5 percent of original size [2023-08-27 00:37:58,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 634 treesize of output 668 [2023-08-27 00:37:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:37:59,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680147953] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:37:59,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:37:59,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-08-27 00:37:59,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827828031] [2023-08-27 00:37:59,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:37:59,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 00:37:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:37:59,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 00:37:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-08-27 00:37:59,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 633 [2023-08-27 00:37:59,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 174 transitions, 1882 flow. Second operand has 22 states, 22 states have (on average 164.9090909090909) internal successors, (3628), 22 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:37:59,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:37:59,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 633 [2023-08-27 00:37:59,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:02,179 INFO L124 PetriNetUnfolderBase]: 4339/7812 cut-off events. [2023-08-27 00:38:02,180 INFO L125 PetriNetUnfolderBase]: For 19912/19912 co-relation queries the response was YES. [2023-08-27 00:38:02,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28337 conditions, 7812 events. 4339/7812 cut-off events. For 19912/19912 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 56369 event pairs, 1444 based on Foata normal form. 128/7939 useless extension candidates. Maximal degree in co-relation 28295. Up to 4143 conditions per place. [2023-08-27 00:38:02,214 INFO L140 encePairwiseOnDemand]: 623/633 looper letters, 255 selfloop transitions, 90 changer transitions 134/479 dead transitions. [2023-08-27 00:38:02,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 479 transitions, 4173 flow [2023-08-27 00:38:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-27 00:38:02,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-27 00:38:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 6163 transitions. [2023-08-27 00:38:02,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27044935931191855 [2023-08-27 00:38:02,225 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 6163 transitions. [2023-08-27 00:38:02,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 6163 transitions. [2023-08-27 00:38:02,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:02,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 6163 transitions. [2023-08-27 00:38:02,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 171.19444444444446) internal successors, (6163), 36 states have internal predecessors, (6163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:02,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 633.0) internal successors, (23421), 37 states have internal predecessors, (23421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:02,250 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 633.0) internal successors, (23421), 37 states have internal predecessors, (23421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:02,250 INFO L175 Difference]: Start difference. First operand has 129 places, 174 transitions, 1882 flow. Second operand 36 states and 6163 transitions. [2023-08-27 00:38:02,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 479 transitions, 4173 flow [2023-08-27 00:38:02,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 479 transitions, 4062 flow, removed 30 selfloop flow, removed 5 redundant places. [2023-08-27 00:38:02,350 INFO L231 Difference]: Finished difference. Result has 165 places, 184 transitions, 2143 flow [2023-08-27 00:38:02,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2143, PETRI_PLACES=165, PETRI_TRANSITIONS=184} [2023-08-27 00:38:02,351 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 114 predicate places. [2023-08-27 00:38:02,351 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 184 transitions, 2143 flow [2023-08-27 00:38:02,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 164.9090909090909) internal successors, (3628), 22 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:02,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:02,352 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:02,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:02,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:02,561 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:38:02,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:02,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1678191792, now seen corresponding path program 4 times [2023-08-27 00:38:02,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:02,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926957671] [2023-08-27 00:38:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:02,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 00:38:02,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:02,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926957671] [2023-08-27 00:38:02,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926957671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:02,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086719009] [2023-08-27 00:38:03,000 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:38:03,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:03,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:03,001 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:03,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 00:38:03,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:38:03,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:38:03,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:38:03,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 00:38:03,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:38:04,003 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:38:04,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 247 treesize of output 253 [2023-08-27 00:38:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 00:38:04,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086719009] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:38:04,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:38:04,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 00:38:04,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504226460] [2023-08-27 00:38:04,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:38:04,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 00:38:04,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:04,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 00:38:04,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-27 00:38:04,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 633 [2023-08-27 00:38:04,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 184 transitions, 2143 flow. Second operand has 16 states, 16 states have (on average 181.5625) internal successors, (2905), 16 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:04,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:04,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 633 [2023-08-27 00:38:04,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:05,573 INFO L124 PetriNetUnfolderBase]: 3963/7200 cut-off events. [2023-08-27 00:38:05,573 INFO L125 PetriNetUnfolderBase]: For 22073/22073 co-relation queries the response was YES. [2023-08-27 00:38:05,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26764 conditions, 7200 events. 3963/7200 cut-off events. For 22073/22073 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 51644 event pairs, 2538 based on Foata normal form. 72/7272 useless extension candidates. Maximal degree in co-relation 26716. Up to 4656 conditions per place. [2023-08-27 00:38:05,601 INFO L140 encePairwiseOnDemand]: 626/633 looper letters, 172 selfloop transitions, 13 changer transitions 53/238 dead transitions. [2023-08-27 00:38:05,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 238 transitions, 2837 flow [2023-08-27 00:38:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 00:38:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 00:38:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1861 transitions. [2023-08-27 00:38:05,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2939968404423381 [2023-08-27 00:38:05,604 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1861 transitions. [2023-08-27 00:38:05,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1861 transitions. [2023-08-27 00:38:05,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:05,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1861 transitions. [2023-08-27 00:38:05,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 186.1) internal successors, (1861), 10 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:05,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 633.0) internal successors, (6963), 11 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:05,610 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 633.0) internal successors, (6963), 11 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:05,611 INFO L175 Difference]: Start difference. First operand has 165 places, 184 transitions, 2143 flow. Second operand 10 states and 1861 transitions. [2023-08-27 00:38:05,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 238 transitions, 2837 flow [2023-08-27 00:38:05,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 238 transitions, 2679 flow, removed 16 selfloop flow, removed 12 redundant places. [2023-08-27 00:38:05,715 INFO L231 Difference]: Finished difference. Result has 163 places, 156 transitions, 1632 flow [2023-08-27 00:38:05,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1632, PETRI_PLACES=163, PETRI_TRANSITIONS=156} [2023-08-27 00:38:05,716 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 112 predicate places. [2023-08-27 00:38:05,716 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 156 transitions, 1632 flow [2023-08-27 00:38:05,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 181.5625) internal successors, (2905), 16 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:05,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:05,717 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:05,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:05,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-27 00:38:05,923 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:38:05,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:05,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2058421987, now seen corresponding path program 5 times [2023-08-27 00:38:05,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:05,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927759188] [2023-08-27 00:38:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:05,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 00:38:06,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:06,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927759188] [2023-08-27 00:38:06,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927759188] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:06,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505810548] [2023-08-27 00:38:06,472 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:38:06,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:06,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:06,477 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:06,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 00:38:06,663 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 00:38:06,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:38:06,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 00:38:06,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 00:38:07,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:38:09,512 INFO L322 Elim1Store]: treesize reduction 38, result has 88.9 percent of original size [2023-08-27 00:38:09,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 772 treesize of output 946 [2023-08-27 00:38:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 00:38:16,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505810548] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:38:16,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:38:16,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 00:38:16,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106749205] [2023-08-27 00:38:16,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:38:16,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 00:38:16,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:16,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 00:38:16,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-08-27 00:38:16,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 633 [2023-08-27 00:38:16,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 156 transitions, 1632 flow. Second operand has 18 states, 18 states have (on average 201.16666666666666) internal successors, (3621), 18 states have internal predecessors, (3621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:16,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:16,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 633 [2023-08-27 00:38:16,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:18,504 INFO L124 PetriNetUnfolderBase]: 3705/6471 cut-off events. [2023-08-27 00:38:18,504 INFO L125 PetriNetUnfolderBase]: For 22851/22851 co-relation queries the response was YES. [2023-08-27 00:38:18,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24664 conditions, 6471 events. 3705/6471 cut-off events. For 22851/22851 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 42257 event pairs, 1422 based on Foata normal form. 77/6548 useless extension candidates. Maximal degree in co-relation 24616. Up to 3293 conditions per place. [2023-08-27 00:38:18,532 INFO L140 encePairwiseOnDemand]: 628/633 looper letters, 219 selfloop transitions, 85 changer transitions 55/359 dead transitions. [2023-08-27 00:38:18,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 359 transitions, 3493 flow [2023-08-27 00:38:18,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 00:38:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 00:38:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3998 transitions. [2023-08-27 00:38:18,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33241872453645965 [2023-08-27 00:38:18,536 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3998 transitions. [2023-08-27 00:38:18,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3998 transitions. [2023-08-27 00:38:18,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:18,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3998 transitions. [2023-08-27 00:38:18,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 210.42105263157896) internal successors, (3998), 19 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:18,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 633.0) internal successors, (12660), 20 states have internal predecessors, (12660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:18,549 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 633.0) internal successors, (12660), 20 states have internal predecessors, (12660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:18,549 INFO L175 Difference]: Start difference. First operand has 163 places, 156 transitions, 1632 flow. Second operand 19 states and 3998 transitions. [2023-08-27 00:38:18,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 359 transitions, 3493 flow [2023-08-27 00:38:18,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 359 transitions, 3421 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-08-27 00:38:18,623 INFO L231 Difference]: Finished difference. Result has 165 places, 170 transitions, 1952 flow [2023-08-27 00:38:18,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1952, PETRI_PLACES=165, PETRI_TRANSITIONS=170} [2023-08-27 00:38:18,624 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 114 predicate places. [2023-08-27 00:38:18,624 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 170 transitions, 1952 flow [2023-08-27 00:38:18,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 201.16666666666666) internal successors, (3621), 18 states have internal predecessors, (3621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:18,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:18,625 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:18,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:18,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:18,831 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-27 00:38:18,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:18,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1941648456, now seen corresponding path program 6 times [2023-08-27 00:38:18,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:18,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948362899] [2023-08-27 00:38:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:20,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:20,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948362899] [2023-08-27 00:38:20,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948362899] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:20,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293380049] [2023-08-27 00:38:20,398 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 00:38:20,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:20,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:20,399 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:20,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 00:38:20,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-27 00:38:20,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:38:20,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-27 00:38:20,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:21,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:38:41,551 WARN L234 SmtUtils]: Spent 8.33s on a formula simplification that was a NOOP. DAG size: 1029 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-27 00:38:41,552 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:38:41,553 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 1143 treesize of output 4011 [2023-08-27 00:38:45,379 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:45,567 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:45,771 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:45,824 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:45,901 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:46,082 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:46,300 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:46,484 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:46,511 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:46,556 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:46,752 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:46,774 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:46,987 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:47,070 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:47,132 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:38:47,425 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:38:47,481 WARN L667 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-27 00:38:47,760 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:38:47,894 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:38:48,206 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:38:48,559 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:48,840 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:38:49,153 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:49,509 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:49,955 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:50,228 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:50,555 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:51,377 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:51,659 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:51,828 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:51,993 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:52,208 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:52,429 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:52,626 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:52,868 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:38:53,712 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:53,827 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:53,896 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:38:53,993 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:38:54,070 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:39:01,537 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:39:30,181 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:39:30,722 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:39:31,420 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:39:31,808 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:39:41,906 WARN L234 SmtUtils]: Spent 9.76s on a formula simplification. DAG size of input: 153 DAG size of output: 138 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:39:53,997 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:39:56,120 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:39:57,198 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:39:57,626 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:39:57,932 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:39:58,602 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:40:10,490 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:40:11,518 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:40:12,166 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:40:12,808 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:40:12,862 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:40:13,510 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:40:14,155 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:40:14,482 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:40:15,889 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:40:23,498 WARN L234 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 220 DAG size of output: 148 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:40:36,692 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:40:37,902 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:40:38,179 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:40:38,955 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:40:39,699 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:40:40,030 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:40:45,348 WARN L234 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 164 DAG size of output: 150 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:40:57,116 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:40:57,969 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:41:07,025 WARN L234 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 232 DAG size of output: 182 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:41:25,011 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:41:26,369 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:41:26,891 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:41:27,258 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:41:33,029 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:41:38,751 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:41:40,049 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:41:41,006 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:41:42,429 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:41:43,758 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:41:44,632 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:41:45,464 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:41:45,565 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:41:54,166 WARN L234 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 233 DAG size of output: 160 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:42:09,394 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:42:10,841 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:42:11,341 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:42:12,148 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:42:12,893 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:42:13,575 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:42:15,257 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:42:16,672 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:42:17,169 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:42:18,619 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:42:20,034 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:42:20,114 WARN L667 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-08-27 00:42:20,529 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:42:23,832 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:42:37,697 WARN L234 SmtUtils]: Spent 11.79s on a formula simplification. DAG size of input: 336 DAG size of output: 194 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:42:57,646 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:42:58,389 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:42:59,092 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:43:08,573 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:43:54,810 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:44:01,702 WARN L234 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 182 DAG size of output: 112 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:44:09,477 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:44:10,248 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:44:16,732 WARN L234 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 251 DAG size of output: 137 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:44:25,579 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:44:41,972 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:44:53,904 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:44:55,264 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:45:03,775 WARN L234 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 153 DAG size of output: 140 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:45:29,417 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:45:30,228 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:45:30,918 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:45:42,062 WARN L234 SmtUtils]: Spent 10.43s on a formula simplification. DAG size of input: 220 DAG size of output: 174 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:46:04,750 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:46:21,698 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:46:52,899 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:46:58,201 WARN L234 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 165 DAG size of output: 137 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:47:13,528 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:47:14,341 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:47:25,739 WARN L234 SmtUtils]: Spent 10.72s on a formula simplification. DAG size of input: 232 DAG size of output: 183 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-08-27 00:47:50,003 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:48:06,359 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:48:07,739 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:48:09,142 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-27 00:48:10,691 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:48:11,602 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-27 00:48:12,447 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-08-27 00:48:27,914 WARN L234 SmtUtils]: Spent 13.40s on a formula simplification. DAG size of input: 336 DAG size of output: 194 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) Received shutdown request... [2023-08-27 00:48:36,130 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 00:48:36,180 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 00:48:36,183 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 00:48:36,185 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (41 of 42 remaining) [2023-08-27 00:48:36,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 00:48:36,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:48:36,393 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. [2023-08-27 00:48:36,394 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 42 remaining) [2023-08-27 00:48:36,394 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 42 remaining) [2023-08-27 00:48:36,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 42 remaining) [2023-08-27 00:48:36,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 42 remaining) [2023-08-27 00:48:36,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 42 remaining) [2023-08-27 00:48:36,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 42 remaining) [2023-08-27 00:48:36,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 42 remaining) [2023-08-27 00:48:36,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 42 remaining) [2023-08-27 00:48:36,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 42 remaining) [2023-08-27 00:48:36,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 42 remaining) [2023-08-27 00:48:36,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 42 remaining) [2023-08-27 00:48:36,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 42 remaining) [2023-08-27 00:48:36,396 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 42 remaining) [2023-08-27 00:48:36,396 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 42 remaining) [2023-08-27 00:48:36,396 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 42 remaining) [2023-08-27 00:48:36,396 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 42 remaining) [2023-08-27 00:48:36,396 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 42 remaining) [2023-08-27 00:48:36,396 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 42 remaining) [2023-08-27 00:48:36,396 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 42 remaining) [2023-08-27 00:48:36,396 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 42 remaining) [2023-08-27 00:48:36,396 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 42 remaining) [2023-08-27 00:48:36,396 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 42 remaining) [2023-08-27 00:48:36,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 42 remaining) [2023-08-27 00:48:36,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 42 remaining) [2023-08-27 00:48:36,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 42 remaining) [2023-08-27 00:48:36,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 42 remaining) [2023-08-27 00:48:36,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 42 remaining) [2023-08-27 00:48:36,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 42 remaining) [2023-08-27 00:48:36,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 42 remaining) [2023-08-27 00:48:36,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 42 remaining) [2023-08-27 00:48:36,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 42 remaining) [2023-08-27 00:48:36,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 42 remaining) [2023-08-27 00:48:36,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 42 remaining) [2023-08-27 00:48:36,398 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 42 remaining) [2023-08-27 00:48:36,398 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 42 remaining) [2023-08-27 00:48:36,398 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 42 remaining) [2023-08-27 00:48:36,398 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 42 remaining) [2023-08-27 00:48:36,398 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 42 remaining) [2023-08-27 00:48:36,398 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 42 remaining) [2023-08-27 00:48:36,398 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 42 remaining) [2023-08-27 00:48:36,398 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 42 remaining) [2023-08-27 00:48:36,399 INFO L445 BasicCegarLoop]: Path program histogram: [6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:48:36,403 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 00:48:36,403 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 00:48:36,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:48:36 BasicIcfg [2023-08-27 00:48:36,405 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 00:48:36,405 INFO L158 Benchmark]: Toolchain (without parser) took 810701.36ms. Allocated memory was 367.0MB in the beginning and 1.2GB in the end (delta: 866.1MB). Free memory was 343.3MB in the beginning and 907.1MB in the end (delta: -563.8MB). Peak memory consumption was 779.0MB. Max. memory is 16.0GB. [2023-08-27 00:48:36,405 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 367.0MB. Free memory is still 343.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 00:48:36,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.80ms. Allocated memory is still 367.0MB. Free memory was 342.9MB in the beginning and 330.1MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 00:48:36,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.69ms. Allocated memory is still 367.0MB. Free memory was 330.1MB in the beginning and 327.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 00:48:36,406 INFO L158 Benchmark]: Boogie Preprocessor took 60.38ms. Allocated memory is still 367.0MB. Free memory was 327.3MB in the beginning and 325.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:48:36,406 INFO L158 Benchmark]: RCFGBuilder took 991.13ms. Allocated memory is still 367.0MB. Free memory was 325.2MB in the beginning and 314.0MB in the end (delta: 11.2MB). Peak memory consumption was 40.1MB. Max. memory is 16.0GB. [2023-08-27 00:48:36,406 INFO L158 Benchmark]: TraceAbstraction took 809304.19ms. Allocated memory was 367.0MB in the beginning and 1.2GB in the end (delta: 866.1MB). Free memory was 313.0MB in the beginning and 907.1MB in the end (delta: -594.0MB). Peak memory consumption was 747.3MB. Max. memory is 16.0GB. [2023-08-27 00:48:36,407 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 367.0MB. Free memory is still 343.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 271.80ms. Allocated memory is still 367.0MB. Free memory was 342.9MB in the beginning and 330.1MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 68.69ms. Allocated memory is still 367.0MB. Free memory was 330.1MB in the beginning and 327.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 60.38ms. Allocated memory is still 367.0MB. Free memory was 327.3MB in the beginning and 325.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 991.13ms. Allocated memory is still 367.0MB. Free memory was 325.2MB in the beginning and 314.0MB in the end (delta: 11.2MB). Peak memory consumption was 40.1MB. Max. memory is 16.0GB. * TraceAbstraction took 809304.19ms. Allocated memory was 367.0MB in the beginning and 1.2GB in the end (delta: 866.1MB). Free memory was 313.0MB in the beginning and 907.1MB in the end (delta: -594.0MB). Peak memory consumption was 747.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.8s, 268 PlacesBefore, 51 PlacesAfterwards, 285 TransitionsBefore, 47 TransitionsAfterwards, 4260 CoEnabledTransitionPairs, 7 FixpointIterations, 188 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 11 ConcurrentYvCompositions, 21 ChoiceCompositions, 334 TotalNumberOfCompositions, 4871 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4747, independent: 4737, independent conditional: 0, independent unconditional: 4737, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2046, independent: 2041, independent conditional: 0, independent unconditional: 2041, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4747, independent: 2696, independent conditional: 0, independent unconditional: 2696, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 2046, unknown conditional: 0, unknown unconditional: 2046] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 115, Positive conditional cache size: 0, Positive unconditional cache size: 115, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 9 for 27ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 329 locations, 42 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 809.2s, OverallIterations: 33, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 103.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.9s, HoareTripleCheckerStatistics: 142 mSolverCounterUnknown, 2738 SdHoareTripleChecker+Valid, 60.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2738 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 59.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 300 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5897 IncrementalHoareTripleChecker+Invalid, 6339 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 300 mSolverCounterUnsat, 0 mSDtfsCounter, 5897 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 816 GetRequests, 482 SyntacticMatches, 7 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 46.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2143occurred in iteration=30, InterpolantAutomatonStates: 256, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 66.9s InterpolantComputationTime, 850 NumberOfCodeBlocks, 845 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 1034 ConstructedInterpolants, 44 QuantifiedInterpolants, 23196 SizeOfPredicates, 466 NumberOfNonLiveVariables, 5838 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 64 InterpolantComputations, 21 PerfectInterpolantSequences, 181/300 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown