/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/parallel-min-max-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:16:30,398 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:16:30,455 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 00:16:30,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:16:30,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:16:30,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:16:30,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:16:30,480 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:16:30,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:16:30,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:16:30,483 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:16:30,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:16:30,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:16:30,485 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:16:30,485 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:16:30,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:16:30,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:16:30,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:16:30,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:16:30,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:16:30,486 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:16:30,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:16:30,486 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:16:30,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:16:30,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:16:30,487 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:16:30,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:16:30,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:16:30,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:16:30,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:16:30,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:16:30,488 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:16:30,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:16:30,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:16:30,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:16:30,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:16:30,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:16:30,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:16:30,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:16:30,750 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:16:30,752 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:16:30,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-08-27 00:16:31,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:16:31,823 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:16:31,824 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-08-27 00:16:31,830 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd42f6c8/2d8b9cb1d40646e8b6ec3d6db6b5a3b8/FLAG103ecce94 [2023-08-27 00:16:31,842 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd42f6c8/2d8b9cb1d40646e8b6ec3d6db6b5a3b8 [2023-08-27 00:16:31,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:16:31,848 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:16:31,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:16:31,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:16:31,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:16:31,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:16:31" (1/1) ... [2023-08-27 00:16:31,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fea1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:31, skipping insertion in model container [2023-08-27 00:16:31,854 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:16:31" (1/1) ... [2023-08-27 00:16:31,875 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:16:32,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:16:32,028 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:16:32,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:16:32,070 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:16:32,070 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:16:32,075 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:16:32,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32 WrapperNode [2023-08-27 00:16:32,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:16:32,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:16:32,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:16:32,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:16:32,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (1/1) ... [2023-08-27 00:16:32,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (1/1) ... [2023-08-27 00:16:32,120 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 134 [2023-08-27 00:16:32,120 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:16:32,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:16:32,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:16:32,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:16:32,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (1/1) ... [2023-08-27 00:16:32,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (1/1) ... [2023-08-27 00:16:32,140 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (1/1) ... [2023-08-27 00:16:32,140 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (1/1) ... [2023-08-27 00:16:32,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (1/1) ... [2023-08-27 00:16:32,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (1/1) ... [2023-08-27 00:16:32,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (1/1) ... [2023-08-27 00:16:32,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (1/1) ... [2023-08-27 00:16:32,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:16:32,150 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:16:32,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:16:32,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:16:32,151 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (1/1) ... [2023-08-27 00:16:32,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:16:32,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:32,175 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 00:16:32,182 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 00:16:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:16:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:16:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:16:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:16:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:16:32,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:16:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:16:32,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:16:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:16:32,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:16:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:16:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:16:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:16:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 00:16:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:16:32,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:16:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:16:32,207 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 00:16:32,274 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:16:32,275 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:16:32,574 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:16:32,629 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:16:32,630 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 00:16:32,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:16:32 BoogieIcfgContainer [2023-08-27 00:16:32,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:16:32,633 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:16:32,633 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:16:32,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:16:32,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:16:31" (1/3) ... [2023-08-27 00:16:32,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b2eb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:16:32, skipping insertion in model container [2023-08-27 00:16:32,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:16:32" (2/3) ... [2023-08-27 00:16:32,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b2eb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:16:32, skipping insertion in model container [2023-08-27 00:16:32,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:16:32" (3/3) ... [2023-08-27 00:16:32,638 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-08-27 00:16:32,649 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:16:32,650 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 00:16:32,650 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:16:32,710 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 00:16:32,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 185 transitions, 394 flow [2023-08-27 00:16:32,811 INFO L124 PetriNetUnfolderBase]: 12/182 cut-off events. [2023-08-27 00:16:32,812 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:16:32,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 182 events. 12/182 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 167 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2023-08-27 00:16:32,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 185 transitions, 394 flow [2023-08-27 00:16:32,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 171 transitions, 360 flow [2023-08-27 00:16:32,826 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:16:32,835 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 171 transitions, 360 flow [2023-08-27 00:16:32,838 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 171 transitions, 360 flow [2023-08-27 00:16:32,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 171 transitions, 360 flow [2023-08-27 00:16:32,859 INFO L124 PetriNetUnfolderBase]: 12/171 cut-off events. [2023-08-27 00:16:32,860 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:16:32,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 171 events. 12/171 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 166 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2023-08-27 00:16:32,861 INFO L119 LiptonReduction]: Number of co-enabled transitions 1754 [2023-08-27 00:16:38,072 INFO L134 LiptonReduction]: Checked pairs total: 2722 [2023-08-27 00:16:38,073 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-08-27 00:16:38,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:16:38,086 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;@4650fa53, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:16:38,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-27 00:16:38,088 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:16:38,088 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 00:16:38,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:16:38,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:38,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 00:16:38,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:38,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:38,091 INFO L85 PathProgramCache]: Analyzing trace with hash 23158, now seen corresponding path program 1 times [2023-08-27 00:16:38,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:38,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836318723] [2023-08-27 00:16:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:38,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:38,318 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 00:16:38,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836318723] [2023-08-27 00:16:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836318723] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:38,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:16:38,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:16:38,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287264566] [2023-08-27 00:16:38,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:38,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:16:38,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:38,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:16:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:16:38,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 364 [2023-08-27 00:16:38,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:38,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:38,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 364 [2023-08-27 00:16:38,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:38,492 INFO L124 PetriNetUnfolderBase]: 485/748 cut-off events. [2023-08-27 00:16:38,492 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-08-27 00:16:38,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 748 events. 485/748 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2600 event pairs, 405 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 1428. Up to 748 conditions per place. [2023-08-27 00:16:38,500 INFO L140 encePairwiseOnDemand]: 359/364 looper letters, 29 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-08-27 00:16:38,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 146 flow [2023-08-27 00:16:38,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:16:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:16:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-08-27 00:16:38,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652014652014652 [2023-08-27 00:16:38,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-08-27 00:16:38,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-08-27 00:16:38,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:38,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-08-27 00:16:38,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:38,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:38,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:38,530 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 78 flow. Second operand 3 states and 508 transitions. [2023-08-27 00:16:38,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 146 flow [2023-08-27 00:16:38,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 00:16:38,536 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 87 flow [2023-08-27 00:16:38,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-27 00:16:38,540 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-08-27 00:16:38,540 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 87 flow [2023-08-27 00:16:38,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:38,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:38,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:16:38,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:16:38,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:38,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:38,542 INFO L85 PathProgramCache]: Analyzing trace with hash 719387, now seen corresponding path program 1 times [2023-08-27 00:16:38,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:38,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333404304] [2023-08-27 00:16:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:38,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:38,593 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 00:16:38,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:38,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333404304] [2023-08-27 00:16:38,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333404304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:38,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:16:38,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:16:38,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299900384] [2023-08-27 00:16:38,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:38,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:16:38,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:16:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:16:38,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 364 [2023-08-27 00:16:38,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:38,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:38,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 364 [2023-08-27 00:16:38,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:38,667 INFO L124 PetriNetUnfolderBase]: 485/747 cut-off events. [2023-08-27 00:16:38,667 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 00:16:38,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 747 events. 485/747 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2619 event pairs, 405 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 1525. Up to 744 conditions per place. [2023-08-27 00:16:38,670 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-27 00:16:38,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 145 flow [2023-08-27 00:16:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:16:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:16:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-08-27 00:16:38,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2023-08-27 00:16:38,671 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-08-27 00:16:38,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-08-27 00:16:38,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:38,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-08-27 00:16:38,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:38,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:38,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:38,675 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 87 flow. Second operand 3 states and 504 transitions. [2023-08-27 00:16:38,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 145 flow [2023-08-27 00:16:38,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 140 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 00:16:38,676 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 84 flow [2023-08-27 00:16:38,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-08-27 00:16:38,676 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-08-27 00:16:38,676 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 84 flow [2023-08-27 00:16:38,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:38,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:38,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:16:38,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:16:38,677 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:38,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash 719413, now seen corresponding path program 1 times [2023-08-27 00:16:38,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:38,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231598767] [2023-08-27 00:16:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:38,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:38,754 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 00:16:38,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:38,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231598767] [2023-08-27 00:16:38,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231598767] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:38,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735947555] [2023-08-27 00:16:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:38,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:38,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:38,758 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 00:16:38,761 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 00:16:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:38,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:16:38,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:16:38,882 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 00:16:38,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:16:38,893 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 00:16:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735947555] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:16:38,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:16:38,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:16:38,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517064428] [2023-08-27 00:16:38,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:16:38,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:16:38,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:16:38,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:16:38,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 364 [2023-08-27 00:16:38,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 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 00:16:38,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:38,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 364 [2023-08-27 00:16:38,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:39,024 INFO L124 PetriNetUnfolderBase]: 488/753 cut-off events. [2023-08-27 00:16:39,024 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 00:16:39,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 753 events. 488/753 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2636 event pairs, 405 based on Foata normal form. 0/518 useless extension candidates. Maximal degree in co-relation 1525. Up to 750 conditions per place. [2023-08-27 00:16:39,028 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 28 selfloop transitions, 9 changer transitions 0/37 dead transitions. [2023-08-27 00:16:39,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 188 flow [2023-08-27 00:16:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:16:39,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:16:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 988 transitions. [2023-08-27 00:16:39,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2023-08-27 00:16:39,030 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 988 transitions. [2023-08-27 00:16:39,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 988 transitions. [2023-08-27 00:16:39,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:39,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 988 transitions. [2023-08-27 00:16:39,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,035 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 364.0) internal successors, (2548), 7 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,035 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 84 flow. Second operand 6 states and 988 transitions. [2023-08-27 00:16:39,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 188 flow [2023-08-27 00:16:39,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:16:39,037 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 139 flow [2023-08-27 00:16:39,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2023-08-27 00:16:39,038 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-08-27 00:16:39,038 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 139 flow [2023-08-27 00:16:39,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 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 00:16:39,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:39,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:16:39,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 00:16:39,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:39,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:39,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:39,243 INFO L85 PathProgramCache]: Analyzing trace with hash -35242209, now seen corresponding path program 1 times [2023-08-27 00:16:39,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:39,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279264157] [2023-08-27 00:16:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:39,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:39,293 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 00:16:39,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:39,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279264157] [2023-08-27 00:16:39,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279264157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:39,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:16:39,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:16:39,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407351451] [2023-08-27 00:16:39,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:39,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:16:39,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:39,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:16:39,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:16:39,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 364 [2023-08-27 00:16:39,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:39,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 364 [2023-08-27 00:16:39,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:39,392 INFO L124 PetriNetUnfolderBase]: 600/903 cut-off events. [2023-08-27 00:16:39,392 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 00:16:39,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1894 conditions, 903 events. 600/903 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3314 event pairs, 405 based on Foata normal form. 0/611 useless extension candidates. Maximal degree in co-relation 1858. Up to 792 conditions per place. [2023-08-27 00:16:39,396 INFO L140 encePairwiseOnDemand]: 359/364 looper letters, 48 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-27 00:16:39,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 271 flow [2023-08-27 00:16:39,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:16:39,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:16:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-27 00:16:39,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2023-08-27 00:16:39,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-27 00:16:39,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-27 00:16:39,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:39,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-27 00:16:39,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,401 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 139 flow. Second operand 3 states and 525 transitions. [2023-08-27 00:16:39,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 271 flow [2023-08-27 00:16:39,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 250 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 00:16:39,404 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 139 flow [2023-08-27 00:16:39,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-27 00:16:39,405 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2023-08-27 00:16:39,406 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 139 flow [2023-08-27 00:16:39,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:39,406 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 00:16:39,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 00:16:39,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:39,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:39,407 INFO L85 PathProgramCache]: Analyzing trace with hash -42099760, now seen corresponding path program 2 times [2023-08-27 00:16:39,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:39,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459535163] [2023-08-27 00:16:39,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:39,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:39,488 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 00:16:39,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:39,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459535163] [2023-08-27 00:16:39,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459535163] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:39,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305593474] [2023-08-27 00:16:39,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:16:39,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:39,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:39,494 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 00:16:39,500 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 00:16:39,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:16:39,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:16:39,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:16:39,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:16:39,575 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 00:16:39,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:16:39,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305593474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:39,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:16:39,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 00:16:39,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626736143] [2023-08-27 00:16:39,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:39,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:16:39,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:16:39,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:16:39,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 364 [2023-08-27 00:16:39,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:39,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 364 [2023-08-27 00:16:39,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:39,645 INFO L124 PetriNetUnfolderBase]: 600/902 cut-off events. [2023-08-27 00:16:39,645 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2023-08-27 00:16:39,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2222 conditions, 902 events. 600/902 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3190 event pairs, 473 based on Foata normal form. 1/612 useless extension candidates. Maximal degree in co-relation 2195. Up to 902 conditions per place. [2023-08-27 00:16:39,649 INFO L140 encePairwiseOnDemand]: 362/364 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-27 00:16:39,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 205 flow [2023-08-27 00:16:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:16:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:16:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-27 00:16:39,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4633699633699634 [2023-08-27 00:16:39,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-27 00:16:39,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-27 00:16:39,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:39,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-27 00:16:39,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,654 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 139 flow. Second operand 3 states and 506 transitions. [2023-08-27 00:16:39,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 205 flow [2023-08-27 00:16:39,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 184 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 00:16:39,656 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 110 flow [2023-08-27 00:16:39,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-08-27 00:16:39,657 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2023-08-27 00:16:39,657 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 110 flow [2023-08-27 00:16:39,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:39,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:16:39,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 00:16:39,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:39,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:39,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1092507760, now seen corresponding path program 1 times [2023-08-27 00:16:39,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:39,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398794093] [2023-08-27 00:16:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:39,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:39,894 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 00:16:39,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:39,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398794093] [2023-08-27 00:16:39,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398794093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:39,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:16:39,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:16:39,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769109490] [2023-08-27 00:16:39,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:39,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:16:39,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:39,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:16:39,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:16:39,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 364 [2023-08-27 00:16:39,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:39,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 364 [2023-08-27 00:16:39,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:39,973 INFO L124 PetriNetUnfolderBase]: 526/790 cut-off events. [2023-08-27 00:16:39,973 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-27 00:16:39,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1826 conditions, 790 events. 526/790 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2926 event pairs, 201 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 1817. Up to 417 conditions per place. [2023-08-27 00:16:39,976 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 46 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-08-27 00:16:39,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 230 flow [2023-08-27 00:16:39,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:16:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:16:39,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-27 00:16:39,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-27 00:16:39,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-27 00:16:39,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-27 00:16:39,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:39,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-27 00:16:39,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,980 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 110 flow. Second operand 3 states and 520 transitions. [2023-08-27 00:16:39,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 230 flow [2023-08-27 00:16:39,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:16:39,982 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 111 flow [2023-08-27 00:16:39,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-08-27 00:16:39,984 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2023-08-27 00:16:39,984 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 111 flow [2023-08-27 00:16:39,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:39,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:39,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:16:39,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 00:16:39,985 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:39,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:39,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1092507759, now seen corresponding path program 1 times [2023-08-27 00:16:39,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:39,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892781551] [2023-08-27 00:16:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:39,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:40,028 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 00:16:40,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:40,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892781551] [2023-08-27 00:16:40,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892781551] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:40,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627524119] [2023-08-27 00:16:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:40,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:40,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:40,030 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 00:16:40,065 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 00:16:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:40,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 00:16:40,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:16:40,143 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 00:16:40,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:16:40,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627524119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:40,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:16:40,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-27 00:16:40,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711574909] [2023-08-27 00:16:40,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:40,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:16:40,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:40,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:16:40,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:16:40,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 364 [2023-08-27 00:16:40,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:40,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 364 [2023-08-27 00:16:40,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:40,237 INFO L124 PetriNetUnfolderBase]: 525/789 cut-off events. [2023-08-27 00:16:40,238 INFO L125 PetriNetUnfolderBase]: For 355/355 co-relation queries the response was YES. [2023-08-27 00:16:40,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1937 conditions, 789 events. 525/789 cut-off events. For 355/355 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2659 event pairs, 405 based on Foata normal form. 1/631 useless extension candidates. Maximal degree in co-relation 1928. Up to 789 conditions per place. [2023-08-27 00:16:40,240 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 34 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-08-27 00:16:40,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 179 flow [2023-08-27 00:16:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:16:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:16:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-27 00:16:40,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963369963369965 [2023-08-27 00:16:40,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-27 00:16:40,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-27 00:16:40,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:40,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-27 00:16:40,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,245 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 111 flow. Second operand 3 states and 491 transitions. [2023-08-27 00:16:40,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 179 flow [2023-08-27 00:16:40,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 173 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:16:40,246 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 105 flow [2023-08-27 00:16:40,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-08-27 00:16:40,247 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2023-08-27 00:16:40,247 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 105 flow [2023-08-27 00:16:40,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:40,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:16:40,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 00:16:40,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:40,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:40,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1590556916, now seen corresponding path program 1 times [2023-08-27 00:16:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:40,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255662154] [2023-08-27 00:16:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:40,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:40,495 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 00:16:40,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:40,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255662154] [2023-08-27 00:16:40,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255662154] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:40,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740360480] [2023-08-27 00:16:40,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:40,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:40,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:40,498 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 00:16:40,501 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 00:16:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:40,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 00:16:40,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:16:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:16:40,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:16:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:16:40,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740360480] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:16:40,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:16:40,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-27 00:16:40,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146767293] [2023-08-27 00:16:40,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:16:40,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:16:40,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:40,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:16:40,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:16:40,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 364 [2023-08-27 00:16:40,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 105 flow. Second operand has 13 states, 13 states have (on average 143.69230769230768) internal successors, (1868), 13 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:40,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 364 [2023-08-27 00:16:40,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:40,916 INFO L124 PetriNetUnfolderBase]: 981/1480 cut-off events. [2023-08-27 00:16:40,916 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-08-27 00:16:40,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 1480 events. 981/1480 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6031 event pairs, 505 based on Foata normal form. 0/1159 useless extension candidates. Maximal degree in co-relation 3408. Up to 637 conditions per place. [2023-08-27 00:16:40,922 INFO L140 encePairwiseOnDemand]: 356/364 looper letters, 94 selfloop transitions, 13 changer transitions 0/107 dead transitions. [2023-08-27 00:16:40,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 107 transitions, 485 flow [2023-08-27 00:16:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 00:16:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 00:16:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1387 transitions. [2023-08-27 00:16:40,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4233821733821734 [2023-08-27 00:16:40,924 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1387 transitions. [2023-08-27 00:16:40,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1387 transitions. [2023-08-27 00:16:40,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:40,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1387 transitions. [2023-08-27 00:16:40,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 154.11111111111111) internal successors, (1387), 9 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 364.0) internal successors, (3640), 10 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,930 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 364.0) internal successors, (3640), 10 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,930 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 105 flow. Second operand 9 states and 1387 transitions. [2023-08-27 00:16:40,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 107 transitions, 485 flow [2023-08-27 00:16:40,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 107 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:16:40,932 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 179 flow [2023-08-27 00:16:40,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=179, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-08-27 00:16:40,933 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-08-27 00:16:40,933 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 179 flow [2023-08-27 00:16:40,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 143.69230769230768) internal successors, (1868), 13 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:40,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:40,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:16:40,941 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 00:16:41,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:41,142 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:41,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:41,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1904272331, now seen corresponding path program 1 times [2023-08-27 00:16:41,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:41,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345517159] [2023-08-27 00:16:41,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:41,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:41,178 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 00:16:41,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:41,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345517159] [2023-08-27 00:16:41,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345517159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:41,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:16:41,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:16:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432686328] [2023-08-27 00:16:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:41,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:16:41,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:41,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:16:41,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:16:41,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 364 [2023-08-27 00:16:41,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:41,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:41,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 364 [2023-08-27 00:16:41,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:41,300 INFO L124 PetriNetUnfolderBase]: 1229/1808 cut-off events. [2023-08-27 00:16:41,301 INFO L125 PetriNetUnfolderBase]: For 2167/2167 co-relation queries the response was YES. [2023-08-27 00:16:41,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5122 conditions, 1808 events. 1229/1808 cut-off events. For 2167/2167 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7181 event pairs, 758 based on Foata normal form. 46/1569 useless extension candidates. Maximal degree in co-relation 5108. Up to 1561 conditions per place. [2023-08-27 00:16:41,308 INFO L140 encePairwiseOnDemand]: 359/364 looper letters, 60 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-08-27 00:16:41,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 410 flow [2023-08-27 00:16:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:16:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:16:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-08-27 00:16:41,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47802197802197804 [2023-08-27 00:16:41,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-08-27 00:16:41,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-08-27 00:16:41,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:41,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-08-27 00:16:41,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:41,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:41,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:41,312 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 179 flow. Second operand 3 states and 522 transitions. [2023-08-27 00:16:41,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 410 flow [2023-08-27 00:16:41,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 377 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 00:16:41,316 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 181 flow [2023-08-27 00:16:41,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-08-27 00:16:41,316 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2023-08-27 00:16:41,317 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 181 flow [2023-08-27 00:16:41,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:41,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:41,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 00:16:41,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 00:16:41,317 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:41,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:41,317 INFO L85 PathProgramCache]: Analyzing trace with hash 348473824, now seen corresponding path program 2 times [2023-08-27 00:16:41,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:41,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497797566] [2023-08-27 00:16:41,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:41,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:16:41,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:41,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497797566] [2023-08-27 00:16:41,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497797566] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:41,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715362296] [2023-08-27 00:16:41,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:16:41,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:41,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:41,367 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 00:16:41,369 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 00:16:41,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:16:41,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:16:41,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:16:41,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:16:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 00:16:41,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:16:41,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715362296] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:41,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:16:41,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 00:16:41,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632495762] [2023-08-27 00:16:41,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:41,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:16:41,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:41,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:16:41,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:16:41,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 364 [2023-08-27 00:16:41,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:41,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:41,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 364 [2023-08-27 00:16:41,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:41,576 INFO L124 PetriNetUnfolderBase]: 1045/1530 cut-off events. [2023-08-27 00:16:41,576 INFO L125 PetriNetUnfolderBase]: For 1561/1561 co-relation queries the response was YES. [2023-08-27 00:16:41,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4549 conditions, 1530 events. 1045/1530 cut-off events. For 1561/1561 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5597 event pairs, 742 based on Foata normal form. 40/1347 useless extension candidates. Maximal degree in co-relation 4534. Up to 1530 conditions per place. [2023-08-27 00:16:41,583 INFO L140 encePairwiseOnDemand]: 361/364 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-27 00:16:41,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 247 flow [2023-08-27 00:16:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:16:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:16:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2023-08-27 00:16:41,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45879120879120877 [2023-08-27 00:16:41,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2023-08-27 00:16:41,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2023-08-27 00:16:41,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:41,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2023-08-27 00:16:41,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:41,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:41,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 364.0) internal successors, (1456), 4 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:41,587 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 181 flow. Second operand 3 states and 501 transitions. [2023-08-27 00:16:41,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 247 flow [2023-08-27 00:16:41,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 233 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 00:16:41,591 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 151 flow [2023-08-27 00:16:41,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-08-27 00:16:41,592 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2023-08-27 00:16:41,592 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 151 flow [2023-08-27 00:16:41,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:41,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:41,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:16:41,599 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 00:16:41,796 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,SelfDestructingSolverStorable9 [2023-08-27 00:16:41,797 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:41,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:41,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1097101894, now seen corresponding path program 1 times [2023-08-27 00:16:41,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:41,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659288176] [2023-08-27 00:16:41,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:41,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:41,844 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 00:16:41,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:41,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659288176] [2023-08-27 00:16:41,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659288176] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:41,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088684220] [2023-08-27 00:16:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:41,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:41,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:41,846 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 00:16:41,848 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 00:16:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:41,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:16:41,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:16:41,932 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 00:16:41,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:16:41,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088684220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:41,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:16:41,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 00:16:41,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945751671] [2023-08-27 00:16:41,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:41,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:16:41,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:41,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:16:41,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:16:41,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 364 [2023-08-27 00:16:41,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:41,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:41,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 364 [2023-08-27 00:16:41,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:42,030 INFO L124 PetriNetUnfolderBase]: 889/1300 cut-off events. [2023-08-27 00:16:42,030 INFO L125 PetriNetUnfolderBase]: For 655/655 co-relation queries the response was YES. [2023-08-27 00:16:42,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3559 conditions, 1300 events. 889/1300 cut-off events. For 655/655 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4738 event pairs, 346 based on Foata normal form. 0/1225 useless extension candidates. Maximal degree in co-relation 3545. Up to 767 conditions per place. [2023-08-27 00:16:42,035 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 73 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-08-27 00:16:42,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 77 transitions, 443 flow [2023-08-27 00:16:42,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:16:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:16:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 687 transitions. [2023-08-27 00:16:42,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47184065934065933 [2023-08-27 00:16:42,037 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 687 transitions. [2023-08-27 00:16:42,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 687 transitions. [2023-08-27 00:16:42,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:42,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 687 transitions. [2023-08-27 00:16:42,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 364.0) internal successors, (1820), 5 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,040 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 364.0) internal successors, (1820), 5 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,040 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 151 flow. Second operand 4 states and 687 transitions. [2023-08-27 00:16:42,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 77 transitions, 443 flow [2023-08-27 00:16:42,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:16:42,042 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 154 flow [2023-08-27 00:16:42,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-27 00:16:42,043 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2023-08-27 00:16:42,043 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 154 flow [2023-08-27 00:16:42,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:42,043 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 00:16:42,049 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 00:16:42,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:42,247 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:42,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2005507850, now seen corresponding path program 1 times [2023-08-27 00:16:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:42,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850459361] [2023-08-27 00:16:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:42,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:42,313 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 00:16:42,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:42,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850459361] [2023-08-27 00:16:42,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850459361] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:42,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:16:42,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:16:42,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514987297] [2023-08-27 00:16:42,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:42,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:16:42,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:16:42,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:16:42,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 364 [2023-08-27 00:16:42,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:42,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 364 [2023-08-27 00:16:42,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:42,405 INFO L124 PetriNetUnfolderBase]: 825/1236 cut-off events. [2023-08-27 00:16:42,405 INFO L125 PetriNetUnfolderBase]: For 1005/1005 co-relation queries the response was YES. [2023-08-27 00:16:42,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3599 conditions, 1236 events. 825/1236 cut-off events. For 1005/1005 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4600 event pairs, 498 based on Foata normal form. 64/1299 useless extension candidates. Maximal degree in co-relation 3585. Up to 1036 conditions per place. [2023-08-27 00:16:42,410 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 46 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2023-08-27 00:16:42,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 288 flow [2023-08-27 00:16:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:16:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:16:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 652 transitions. [2023-08-27 00:16:42,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478021978021978 [2023-08-27 00:16:42,413 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 652 transitions. [2023-08-27 00:16:42,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 652 transitions. [2023-08-27 00:16:42,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:42,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 652 transitions. [2023-08-27 00:16:42,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 364.0) internal successors, (1820), 5 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,416 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 364.0) internal successors, (1820), 5 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,416 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 154 flow. Second operand 4 states and 652 transitions. [2023-08-27 00:16:42,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 288 flow [2023-08-27 00:16:42,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:16:42,420 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 148 flow [2023-08-27 00:16:42,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2023-08-27 00:16:42,421 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2023-08-27 00:16:42,421 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 148 flow [2023-08-27 00:16:42,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:42,421 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 00:16:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 00:16:42,422 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:42,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash -77176195, now seen corresponding path program 1 times [2023-08-27 00:16:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:42,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028396996] [2023-08-27 00:16:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:42,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:42,486 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 00:16:42,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:42,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028396996] [2023-08-27 00:16:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028396996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:42,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:16:42,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:16:42,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724359126] [2023-08-27 00:16:42,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:42,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:16:42,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:42,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:16:42,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:16:42,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 364 [2023-08-27 00:16:42,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:42,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 364 [2023-08-27 00:16:42,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:42,612 INFO L124 PetriNetUnfolderBase]: 751/1162 cut-off events. [2023-08-27 00:16:42,613 INFO L125 PetriNetUnfolderBase]: For 1101/1101 co-relation queries the response was YES. [2023-08-27 00:16:42,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3284 conditions, 1162 events. 751/1162 cut-off events. For 1101/1101 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4514 event pairs, 478 based on Foata normal form. 74/1235 useless extension candidates. Maximal degree in co-relation 3269. Up to 944 conditions per place. [2023-08-27 00:16:42,616 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 51 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-27 00:16:42,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 321 flow [2023-08-27 00:16:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:16:42,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:16:42,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 652 transitions. [2023-08-27 00:16:42,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478021978021978 [2023-08-27 00:16:42,620 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 652 transitions. [2023-08-27 00:16:42,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 652 transitions. [2023-08-27 00:16:42,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:42,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 652 transitions. [2023-08-27 00:16:42,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 364.0) internal successors, (1820), 5 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,623 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 364.0) internal successors, (1820), 5 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,623 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 148 flow. Second operand 4 states and 652 transitions. [2023-08-27 00:16:42,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 321 flow [2023-08-27 00:16:42,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 303 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:16:42,625 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 140 flow [2023-08-27 00:16:42,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-08-27 00:16:42,625 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2023-08-27 00:16:42,626 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 140 flow [2023-08-27 00:16:42,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:42,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:42,626 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 00:16:42,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 00:16:42,626 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:42,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:42,626 INFO L85 PathProgramCache]: Analyzing trace with hash -958055726, now seen corresponding path program 1 times [2023-08-27 00:16:42,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:42,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324427532] [2023-08-27 00:16:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:42,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:16:43,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:43,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324427532] [2023-08-27 00:16:43,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324427532] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:43,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583758060] [2023-08-27 00:16:43,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:43,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:43,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:43,066 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 00:16:43,068 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 00:16:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:43,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 00:16:43,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:16:43,205 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 00:16:43,237 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 00:16:43,258 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 00:16:43,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:16:43,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:16:43,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-27 00:16:43,401 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 00:16:43,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:16:43,639 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4)))) (and (forall ((v_ArrVal_411 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_411) c_~A~0.base))) (or (<= (select .cse0 .cse1) c_~min~0) (<= c_~min~0 (select .cse0 c_~A~0.offset))))) (forall ((v_ArrVal_411 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_411) c_~A~0.base))) (let ((.cse2 (select .cse3 .cse1))) (or (<= .cse2 (select .cse3 c_~A~0.offset)) (< c_~min~0 .cse2))))))) is different from false [2023-08-27 00:16:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:16:43,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583758060] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:16:43,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:16:43,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 8] total 25 [2023-08-27 00:16:43,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971341087] [2023-08-27 00:16:43,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:16:43,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 00:16:43,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:43,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 00:16:43,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=484, Unknown=1, NotChecked=46, Total=650 [2023-08-27 00:16:43,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 364 [2023-08-27 00:16:43,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 140 flow. Second operand has 26 states, 26 states have (on average 114.73076923076923) internal successors, (2983), 26 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:43,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:43,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 364 [2023-08-27 00:16:43,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:45,067 INFO L124 PetriNetUnfolderBase]: 1343/2105 cut-off events. [2023-08-27 00:16:45,068 INFO L125 PetriNetUnfolderBase]: For 1712/1712 co-relation queries the response was YES. [2023-08-27 00:16:45,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6150 conditions, 2105 events. 1343/2105 cut-off events. For 1712/1712 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9508 event pairs, 174 based on Foata normal form. 5/2109 useless extension candidates. Maximal degree in co-relation 6135. Up to 505 conditions per place. [2023-08-27 00:16:45,078 INFO L140 encePairwiseOnDemand]: 353/364 looper letters, 91 selfloop transitions, 19 changer transitions 186/296 dead transitions. [2023-08-27 00:16:45,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 296 transitions, 1660 flow [2023-08-27 00:16:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-27 00:16:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-27 00:16:45,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3737 transitions. [2023-08-27 00:16:45,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3311768876285005 [2023-08-27 00:16:45,085 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3737 transitions. [2023-08-27 00:16:45,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3737 transitions. [2023-08-27 00:16:45,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:45,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3737 transitions. [2023-08-27 00:16:45,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 120.54838709677419) internal successors, (3737), 31 states have internal predecessors, (3737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:45,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 364.0) internal successors, (11648), 32 states have internal predecessors, (11648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:45,112 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 364.0) internal successors, (11648), 32 states have internal predecessors, (11648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:45,112 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 140 flow. Second operand 31 states and 3737 transitions. [2023-08-27 00:16:45,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 296 transitions, 1660 flow [2023-08-27 00:16:45,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 296 transitions, 1586 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:16:45,119 INFO L231 Difference]: Finished difference. Result has 99 places, 42 transitions, 289 flow [2023-08-27 00:16:45,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=289, PETRI_PLACES=99, PETRI_TRANSITIONS=42} [2023-08-27 00:16:45,119 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 62 predicate places. [2023-08-27 00:16:45,119 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 42 transitions, 289 flow [2023-08-27 00:16:45,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 114.73076923076923) internal successors, (2983), 26 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:45,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:45,120 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:16:45,127 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 00:16:45,324 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 00:16:45,324 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:45,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:45,324 INFO L85 PathProgramCache]: Analyzing trace with hash -903803404, now seen corresponding path program 2 times [2023-08-27 00:16:45,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:45,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235288602] [2023-08-27 00:16:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:45,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:16:45,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:45,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235288602] [2023-08-27 00:16:45,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235288602] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:45,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237294618] [2023-08-27 00:16:45,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:16:45,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:45,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:45,454 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 00:16:45,456 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 00:16:45,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:16:45,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:16:45,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 00:16:45,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:16:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:16:45,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:16:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:16:45,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237294618] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:16:45,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:16:45,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-08-27 00:16:45,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312444972] [2023-08-27 00:16:45,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:16:45,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 00:16:45,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:45,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 00:16:45,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-08-27 00:16:45,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 364 [2023-08-27 00:16:45,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 42 transitions, 289 flow. Second operand has 15 states, 15 states have (on average 144.53333333333333) internal successors, (2168), 15 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:45,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:45,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 364 [2023-08-27 00:16:45,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:45,899 INFO L124 PetriNetUnfolderBase]: 450/736 cut-off events. [2023-08-27 00:16:45,899 INFO L125 PetriNetUnfolderBase]: For 6717/6717 co-relation queries the response was YES. [2023-08-27 00:16:45,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4075 conditions, 736 events. 450/736 cut-off events. For 6717/6717 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2635 event pairs, 161 based on Foata normal form. 48/784 useless extension candidates. Maximal degree in co-relation 4035. Up to 476 conditions per place. [2023-08-27 00:16:45,903 INFO L140 encePairwiseOnDemand]: 358/364 looper letters, 51 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2023-08-27 00:16:45,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 64 transitions, 585 flow [2023-08-27 00:16:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:16:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:16:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1181 transitions. [2023-08-27 00:16:45,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055631868131868 [2023-08-27 00:16:45,906 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1181 transitions. [2023-08-27 00:16:45,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1181 transitions. [2023-08-27 00:16:45,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:45,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1181 transitions. [2023-08-27 00:16:45,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.625) internal successors, (1181), 8 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:45,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 364.0) internal successors, (3276), 9 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:45,910 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 364.0) internal successors, (3276), 9 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:45,911 INFO L175 Difference]: Start difference. First operand has 99 places, 42 transitions, 289 flow. Second operand 8 states and 1181 transitions. [2023-08-27 00:16:45,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 64 transitions, 585 flow [2023-08-27 00:16:45,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 456 flow, removed 57 selfloop flow, removed 21 redundant places. [2023-08-27 00:16:45,916 INFO L231 Difference]: Finished difference. Result has 65 places, 43 transitions, 256 flow [2023-08-27 00:16:45,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=256, PETRI_PLACES=65, PETRI_TRANSITIONS=43} [2023-08-27 00:16:45,917 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2023-08-27 00:16:45,917 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions, 256 flow [2023-08-27 00:16:45,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 144.53333333333333) internal successors, (2168), 15 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:45,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:45,918 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 00:16:45,924 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 00:16:46,128 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 00:16:46,131 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:46,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash 656590865, now seen corresponding path program 3 times [2023-08-27 00:16:46,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:46,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882508496] [2023-08-27 00:16:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:46,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:16:46,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882508496] [2023-08-27 00:16:46,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882508496] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402479578] [2023-08-27 00:16:46,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:16:46,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:46,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:46,748 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 00:16:46,751 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 00:16:46,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 00:16:46,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:16:46,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 00:16:46,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:16:46,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:16:46,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:16:47,158 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:16:47,158 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 79 treesize of output 31 [2023-08-27 00:16:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:16:47,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:16:47,753 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse27 (* c_thread1Thread1of1ForFork2_~i~0 4))) (let ((.cse6 (+ c_~A~0.offset .cse27)) (.cse5 (+ c_~A~0.offset .cse27 4)) (.cse3 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_508 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_508) c_~A~0.base))) (let ((.cse1 (select .cse2 c_~A~0.offset)) (.cse0 (select .cse2 .cse6)) (.cse4 (select .cse2 .cse5))) (or (< c_~min~0 .cse0) (<= .cse1 (select .cse2 .cse3)) (<= .cse4 .cse1) (< .cse0 .cse4))))) (forall ((v_ArrVal_508 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_508) c_~A~0.base))) (let ((.cse8 (select .cse7 .cse6)) (.cse9 (select .cse7 c_~A~0.offset))) (or (<= (select .cse7 .cse5) .cse8) (< c_~min~0 .cse8) (<= .cse9 (select .cse7 .cse3)) (<= .cse8 .cse9))))) (forall ((v_ArrVal_508 (Array Int Int))) (let ((.cse12 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_508) c_~A~0.base))) (let ((.cse11 (select .cse12 .cse3)) (.cse10 (select .cse12 .cse6))) (or (<= .cse10 .cse11) (<= (select .cse12 .cse5) .cse10) (< .cse11 (select .cse12 c_~A~0.offset)) (< c_~min~0 .cse10))))) (forall ((v_ArrVal_508 (Array Int Int))) (let ((.cse14 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_508) c_~A~0.base))) (let ((.cse13 (select .cse14 .cse3)) (.cse16 (select .cse14 .cse6)) (.cse15 (select .cse14 .cse5))) (or (< .cse13 (select .cse14 c_~A~0.offset)) (<= .cse15 .cse13) (< c_~min~0 .cse16) (< .cse16 .cse15))))) (forall ((v_ArrVal_508 (Array Int Int))) (let ((.cse19 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_508) c_~A~0.base))) (let ((.cse17 (select .cse19 .cse5)) (.cse18 (select .cse19 .cse3))) (or (< c_~min~0 .cse17) (< .cse18 (select .cse19 c_~A~0.offset)) (<= .cse17 .cse18) (<= (select .cse19 .cse6) c_~min~0))))) (forall ((v_ArrVal_508 (Array Int Int))) (let ((.cse22 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_508) c_~A~0.base))) (let ((.cse20 (select .cse22 .cse5)) (.cse21 (select .cse22 c_~A~0.offset))) (or (< c_~min~0 .cse20) (<= .cse21 (select .cse22 .cse3)) (<= .cse20 .cse21) (<= (select .cse22 .cse6) c_~min~0))))) (forall ((v_ArrVal_508 (Array Int Int))) (let ((.cse24 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_508) c_~A~0.base))) (let ((.cse23 (select .cse24 c_~A~0.offset))) (or (<= c_~min~0 .cse23) (<= .cse23 (select .cse24 .cse3)) (<= (select .cse24 .cse6) c_~min~0) (<= (select .cse24 .cse5) c_~min~0))))) (forall ((v_ArrVal_508 (Array Int Int))) (let ((.cse26 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_508) c_~A~0.base))) (let ((.cse25 (select .cse26 .cse3))) (or (< .cse25 (select .cse26 c_~A~0.offset)) (<= c_~min~0 .cse25) (<= (select .cse26 .cse6) c_~min~0) (<= (select .cse26 .cse5) c_~min~0)))))))) is different from false [2023-08-27 00:16:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 00:16:47,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402479578] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:16:47,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:16:47,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 30 [2023-08-27 00:16:47,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138282700] [2023-08-27 00:16:47,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:16:47,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-27 00:16:47,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:47,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-27 00:16:47,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=714, Unknown=1, NotChecked=56, Total=930 [2023-08-27 00:16:47,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 364 [2023-08-27 00:16:47,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions, 256 flow. Second operand has 31 states, 31 states have (on average 126.51612903225806) internal successors, (3922), 31 states have internal predecessors, (3922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:47,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:47,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 364 [2023-08-27 00:16:47,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:49,389 INFO L124 PetriNetUnfolderBase]: 1518/2458 cut-off events. [2023-08-27 00:16:49,389 INFO L125 PetriNetUnfolderBase]: For 8678/8678 co-relation queries the response was YES. [2023-08-27 00:16:49,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11101 conditions, 2458 events. 1518/2458 cut-off events. For 8678/8678 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12030 event pairs, 280 based on Foata normal form. 6/2464 useless extension candidates. Maximal degree in co-relation 11077. Up to 691 conditions per place. [2023-08-27 00:16:49,398 INFO L140 encePairwiseOnDemand]: 353/364 looper letters, 92 selfloop transitions, 24 changer transitions 195/311 dead transitions. [2023-08-27 00:16:49,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 311 transitions, 2256 flow [2023-08-27 00:16:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 00:16:49,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 00:16:49,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3844 transitions. [2023-08-27 00:16:49,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36415308829101933 [2023-08-27 00:16:49,410 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3844 transitions. [2023-08-27 00:16:49,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3844 transitions. [2023-08-27 00:16:49,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:49,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3844 transitions. [2023-08-27 00:16:49,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 132.55172413793105) internal successors, (3844), 29 states have internal predecessors, (3844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:49,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 364.0) internal successors, (10920), 30 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:49,426 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 364.0) internal successors, (10920), 30 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:49,426 INFO L175 Difference]: Start difference. First operand has 65 places, 43 transitions, 256 flow. Second operand 29 states and 3844 transitions. [2023-08-27 00:16:49,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 311 transitions, 2256 flow [2023-08-27 00:16:49,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 311 transitions, 2148 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-27 00:16:49,440 INFO L231 Difference]: Finished difference. Result has 108 places, 59 transitions, 503 flow [2023-08-27 00:16:49,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=503, PETRI_PLACES=108, PETRI_TRANSITIONS=59} [2023-08-27 00:16:49,441 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 71 predicate places. [2023-08-27 00:16:49,441 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 59 transitions, 503 flow [2023-08-27 00:16:49,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 126.51612903225806) internal successors, (3922), 31 states have internal predecessors, (3922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:49,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:49,442 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 00:16:49,448 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 00:16:49,646 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,SelfDestructingSolverStorable15 [2023-08-27 00:16:49,646 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:49,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:49,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1471258821, now seen corresponding path program 4 times [2023-08-27 00:16:49,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:49,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111896682] [2023-08-27 00:16:49,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:49,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-27 00:16:49,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:49,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111896682] [2023-08-27 00:16:49,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111896682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:16:49,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:16:49,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:16:49,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235619824] [2023-08-27 00:16:49,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:16:49,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:16:49,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:49,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:16:49,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:16:49,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 364 [2023-08-27 00:16:49,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 59 transitions, 503 flow. Second operand has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:49,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:49,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 364 [2023-08-27 00:16:49,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:49,980 INFO L124 PetriNetUnfolderBase]: 1039/1743 cut-off events. [2023-08-27 00:16:49,981 INFO L125 PetriNetUnfolderBase]: For 19488/19488 co-relation queries the response was YES. [2023-08-27 00:16:49,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10058 conditions, 1743 events. 1039/1743 cut-off events. For 19488/19488 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8284 event pairs, 245 based on Foata normal form. 6/1749 useless extension candidates. Maximal degree in co-relation 10013. Up to 1131 conditions per place. [2023-08-27 00:16:49,989 INFO L140 encePairwiseOnDemand]: 360/364 looper letters, 60 selfloop transitions, 9 changer transitions 36/105 dead transitions. [2023-08-27 00:16:49,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 105 transitions, 1150 flow [2023-08-27 00:16:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:16:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:16:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 839 transitions. [2023-08-27 00:16:49,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.460989010989011 [2023-08-27 00:16:49,991 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 839 transitions. [2023-08-27 00:16:49,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 839 transitions. [2023-08-27 00:16:49,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:49,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 839 transitions. [2023-08-27 00:16:49,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.8) internal successors, (839), 5 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:49,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 364.0) internal successors, (2184), 6 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:49,995 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 364.0) internal successors, (2184), 6 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:49,995 INFO L175 Difference]: Start difference. First operand has 108 places, 59 transitions, 503 flow. Second operand 5 states and 839 transitions. [2023-08-27 00:16:49,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 105 transitions, 1150 flow [2023-08-27 00:16:50,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 105 transitions, 1035 flow, removed 51 selfloop flow, removed 14 redundant places. [2023-08-27 00:16:50,015 INFO L231 Difference]: Finished difference. Result has 85 places, 59 transitions, 473 flow [2023-08-27 00:16:50,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=473, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2023-08-27 00:16:50,016 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2023-08-27 00:16:50,016 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 473 flow [2023-08-27 00:16:50,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:50,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:16:50,016 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 00:16:50,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 00:16:50,016 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-27 00:16:50,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:16:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash 106751155, now seen corresponding path program 5 times [2023-08-27 00:16:50,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:16:50,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783681753] [2023-08-27 00:16:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:16:50,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:16:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:16:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-27 00:16:50,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:16:50,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783681753] [2023-08-27 00:16:50,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783681753] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:16:50,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220547279] [2023-08-27 00:16:50,480 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 00:16:50,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:16:50,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:16:50,481 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 00:16:50,483 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 00:16:50,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:16:50,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:16:50,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-27 00:16:50,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:16:50,649 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 00:16:50,676 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 00:16:50,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:16:50,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:16:50,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:16:50,762 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 00:16:50,941 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:16:50,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 47 treesize of output 19 [2023-08-27 00:16:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:16:50,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:16:51,220 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* c_thread1Thread1of1ForFork2_~i~0 4))) (let ((.cse3 (+ c_~A~0.offset .cse10 4)) (.cse2 (+ c_~A~0.offset .cse10))) (and (forall ((v_ArrVal_585 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_585) c_~A~0.base))) (let ((.cse0 (select .cse1 .cse3))) (or (< c_~min~0 .cse0) (<= .cse0 (select .cse1 c_~A~0.offset)) (<= (select .cse1 .cse2) c_~min~0))))) (forall ((v_ArrVal_585 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_585) c_~A~0.base))) (let ((.cse4 (select .cse6 .cse2)) (.cse5 (select .cse6 .cse3))) (or (< c_~min~0 .cse4) (<= .cse5 (select .cse6 c_~A~0.offset)) (< .cse4 .cse5))))) (forall ((v_ArrVal_585 (Array Int Int))) (let ((.cse8 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_585) c_~A~0.base))) (let ((.cse7 (select .cse8 .cse2))) (or (< c_~min~0 .cse7) (<= .cse7 (select .cse8 c_~A~0.offset)) (<= (select .cse8 .cse3) .cse7))))) (forall ((v_ArrVal_585 (Array Int Int))) (let ((.cse9 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_585) c_~A~0.base))) (or (<= (select .cse9 .cse3) c_~min~0) (<= (select .cse9 .cse2) c_~min~0) (<= c_~min~0 (select .cse9 c_~A~0.offset)))))))) is different from false [2023-08-27 00:16:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:16:51,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220547279] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:16:51,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:16:51,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14, 9] total 27 [2023-08-27 00:16:51,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124786913] [2023-08-27 00:16:51,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:16:51,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 00:16:51,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:16:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 00:16:51,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=597, Unknown=1, NotChecked=50, Total=756 [2023-08-27 00:16:51,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 364 [2023-08-27 00:16:51,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 473 flow. Second operand has 28 states, 28 states have (on average 114.75) internal successors, (3213), 28 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:51,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:16:51,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 364 [2023-08-27 00:16:51,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:16:52,199 INFO L124 PetriNetUnfolderBase]: 933/1536 cut-off events. [2023-08-27 00:16:52,199 INFO L125 PetriNetUnfolderBase]: For 13077/13077 co-relation queries the response was YES. [2023-08-27 00:16:52,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8189 conditions, 1536 events. 933/1536 cut-off events. For 13077/13077 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6833 event pairs, 183 based on Foata normal form. 7/1543 useless extension candidates. Maximal degree in co-relation 8159. Up to 830 conditions per place. [2023-08-27 00:16:52,204 INFO L140 encePairwiseOnDemand]: 354/364 looper letters, 0 selfloop transitions, 0 changer transitions 148/148 dead transitions. [2023-08-27 00:16:52,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 148 transitions, 1322 flow [2023-08-27 00:16:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 00:16:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 00:16:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1900 transitions. [2023-08-27 00:16:52,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32623626373626374 [2023-08-27 00:16:52,207 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1900 transitions. [2023-08-27 00:16:52,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1900 transitions. [2023-08-27 00:16:52,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:16:52,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1900 transitions. [2023-08-27 00:16:52,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.75) internal successors, (1900), 16 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:52,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 364.0) internal successors, (6188), 17 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:52,213 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 364.0) internal successors, (6188), 17 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:52,213 INFO L175 Difference]: Start difference. First operand has 85 places, 59 transitions, 473 flow. Second operand 16 states and 1900 transitions. [2023-08-27 00:16:52,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 148 transitions, 1322 flow [2023-08-27 00:16:52,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 148 transitions, 1284 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-27 00:16:52,226 INFO L231 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2023-08-27 00:16:52,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=364, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2023-08-27 00:16:52,226 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 58 predicate places. [2023-08-27 00:16:52,226 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2023-08-27 00:16:52,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 114.75) internal successors, (3213), 28 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:16:52,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (7 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-27 00:16:52,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-27 00:16:52,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-27 00:16:52,235 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 00:16:52,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 00:16:52,434 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:16:52,437 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 00:16:52,437 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 00:16:52,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:16:52 BasicIcfg [2023-08-27 00:16:52,439 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 00:16:52,440 INFO L158 Benchmark]: Toolchain (without parser) took 20592.17ms. Allocated memory was 408.9MB in the beginning and 721.4MB in the end (delta: 312.5MB). Free memory was 384.4MB in the beginning and 566.4MB in the end (delta: -182.1MB). Peak memory consumption was 131.9MB. Max. memory is 16.0GB. [2023-08-27 00:16:52,440 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 408.9MB. Free memory is still 387.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 00:16:52,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.64ms. Allocated memory is still 408.9MB. Free memory was 384.4MB in the beginning and 372.1MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 00:16:52,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.73ms. Allocated memory is still 408.9MB. Free memory was 372.1MB in the beginning and 370.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:16:52,441 INFO L158 Benchmark]: Boogie Preprocessor took 28.64ms. Allocated memory is still 408.9MB. Free memory was 370.0MB in the beginning and 367.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:16:52,441 INFO L158 Benchmark]: RCFGBuilder took 481.68ms. Allocated memory is still 408.9MB. Free memory was 367.9MB in the beginning and 344.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-27 00:16:52,441 INFO L158 Benchmark]: TraceAbstraction took 19805.93ms. Allocated memory was 408.9MB in the beginning and 721.4MB in the end (delta: 312.5MB). Free memory was 344.5MB in the beginning and 566.4MB in the end (delta: -221.9MB). Peak memory consumption was 92.0MB. Max. memory is 16.0GB. [2023-08-27 00:16:52,442 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 408.9MB. Free memory is still 387.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 225.64ms. Allocated memory is still 408.9MB. Free memory was 384.4MB in the beginning and 372.1MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.73ms. Allocated memory is still 408.9MB. Free memory was 372.1MB in the beginning and 370.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.64ms. Allocated memory is still 408.9MB. Free memory was 370.0MB in the beginning and 367.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 481.68ms. Allocated memory is still 408.9MB. Free memory was 367.9MB in the beginning and 344.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 19805.93ms. Allocated memory was 408.9MB in the beginning and 721.4MB in the end (delta: 312.5MB). Free memory was 344.5MB in the beginning and 566.4MB in the end (delta: -221.9MB). Peak memory consumption was 92.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 169 PlacesBefore, 37 PlacesAfterwards, 171 TransitionsBefore, 30 TransitionsAfterwards, 1754 CoEnabledTransitionPairs, 8 FixpointIterations, 99 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 179 TotalNumberOfCompositions, 2722 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2067, independent: 1999, independent conditional: 0, independent unconditional: 1999, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 945, independent: 926, independent conditional: 0, independent unconditional: 926, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2067, independent: 1073, independent conditional: 0, independent unconditional: 1073, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 945, unknown conditional: 0, unknown unconditional: 945] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 213 locations, 14 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: 19.7s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1599 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1599 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 602 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 153 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3860 IncrementalHoareTripleChecker+Invalid, 4615 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 153 mSolverCounterUnsat, 0 mSDtfsCounter, 3860 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 431 GetRequests, 207 SyntacticMatches, 13 SemanticMatches, 211 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2047 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=503occurred in iteration=16, InterpolantAutomatonStates: 140, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 395 NumberOfCodeBlocks, 387 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 476 ConstructedInterpolants, 3 QuantifiedInterpolants, 5384 SizeOfPredicates, 61 NumberOfNonLiveVariables, 1810 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 34 InterpolantComputations, 12 PerfectInterpolantSequences, 84/146 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 00:16:52,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...