/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-misc-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:21:37,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:21:37,077 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 00:21:37,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:21:37,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:21:37,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:21:37,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:21:37,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:21:37,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:21:37,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:21:37,104 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:21:37,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:21:37,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:21:37,105 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:21:37,105 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:21:37,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:21:37,106 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:21:37,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:21:37,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:21:37,107 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:21:37,107 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:21:37,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:21:37,113 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:21:37,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:21:37,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:21:37,117 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:21:37,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:21:37,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:21:37,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:21:37,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:21:37,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:21:37,119 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:21:37,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:21:37,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:21:37,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:21:37,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:21:37,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:21:37,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:21:37,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:21:37,482 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:21:37,483 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:21:37,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-08-27 00:21:38,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:21:38,920 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:21:38,920 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-08-27 00:21:38,926 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9537eed81/244d25d18bef47148964307b91309e90/FLAG3db73a4b3 [2023-08-27 00:21:38,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9537eed81/244d25d18bef47148964307b91309e90 [2023-08-27 00:21:38,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:21:38,939 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:21:38,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:21:38,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:21:38,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:21:38,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:21:38" (1/1) ... [2023-08-27 00:21:38,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f9ae24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:38, skipping insertion in model container [2023-08-27 00:21:38,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:21:38" (1/1) ... [2023-08-27 00:21:38,964 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:21:39,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:21:39,134 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:21:39,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:21:39,179 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:21:39,180 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:21:39,186 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:21:39,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39 WrapperNode [2023-08-27 00:21:39,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:21:39,189 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:21:39,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:21:39,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:21:39,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (1/1) ... [2023-08-27 00:21:39,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (1/1) ... [2023-08-27 00:21:39,240 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 167 [2023-08-27 00:21:39,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:21:39,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:21:39,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:21:39,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:21:39,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (1/1) ... [2023-08-27 00:21:39,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (1/1) ... [2023-08-27 00:21:39,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (1/1) ... [2023-08-27 00:21:39,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (1/1) ... [2023-08-27 00:21:39,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (1/1) ... [2023-08-27 00:21:39,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (1/1) ... [2023-08-27 00:21:39,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (1/1) ... [2023-08-27 00:21:39,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (1/1) ... [2023-08-27 00:21:39,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:21:39,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:21:39,285 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:21:39,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:21:39,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (1/1) ... [2023-08-27 00:21:39,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:21:39,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:21:39,321 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 00:21:39,344 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 00:21:39,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:21:39,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:21:39,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:21:39,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:21:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:21:39,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:21:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:21:39,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:21:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:21:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:21:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:21:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:21:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:21:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:21:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:21:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:21:39,362 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 00:21:39,467 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:21:39,469 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:21:39,675 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:21:39,802 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:21:39,803 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 00:21:39,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:21:39 BoogieIcfgContainer [2023-08-27 00:21:39,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:21:39,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:21:39,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:21:39,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:21:39,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:21:38" (1/3) ... [2023-08-27 00:21:39,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5075edae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:21:39, skipping insertion in model container [2023-08-27 00:21:39,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:21:39" (2/3) ... [2023-08-27 00:21:39,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5075edae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:21:39, skipping insertion in model container [2023-08-27 00:21:39,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:21:39" (3/3) ... [2023-08-27 00:21:39,812 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2023-08-27 00:21:39,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:21:39,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-27 00:21:39,835 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:21:39,954 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 00:21:39,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 127 transitions, 278 flow [2023-08-27 00:21:40,081 INFO L124 PetriNetUnfolderBase]: 7/124 cut-off events. [2023-08-27 00:21:40,082 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:21:40,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 124 events. 7/124 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 176 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-08-27 00:21:40,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 127 transitions, 278 flow [2023-08-27 00:21:40,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 113 transitions, 244 flow [2023-08-27 00:21:40,100 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:21:40,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 113 transitions, 244 flow [2023-08-27 00:21:40,122 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 113 transitions, 244 flow [2023-08-27 00:21:40,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 113 transitions, 244 flow [2023-08-27 00:21:40,171 INFO L124 PetriNetUnfolderBase]: 7/113 cut-off events. [2023-08-27 00:21:40,171 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:21:40,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 113 events. 7/113 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 177 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-08-27 00:21:40,174 INFO L119 LiptonReduction]: Number of co-enabled transitions 2474 [2023-08-27 00:21:45,211 INFO L134 LiptonReduction]: Checked pairs total: 4595 [2023-08-27 00:21:45,211 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-27 00:21:45,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:21:45,227 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;@3ffb3fe1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:21:45,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-27 00:21:45,230 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:21:45,230 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 00:21:45,230 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:21:45,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:45,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 00:21:45,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:45,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash 19046837, now seen corresponding path program 1 times [2023-08-27 00:21:45,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:45,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682147160] [2023-08-27 00:21:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:45,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:45,516 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 00:21:45,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:45,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682147160] [2023-08-27 00:21:45,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682147160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:21:45,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:21:45,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:21:45,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776700765] [2023-08-27 00:21:45,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:21:45,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:21:45,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:45,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:21:45,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:21:45,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 255 [2023-08-27 00:21:45,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:45,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:45,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 255 [2023-08-27 00:21:45,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:45,961 INFO L124 PetriNetUnfolderBase]: 2321/3079 cut-off events. [2023-08-27 00:21:45,961 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-08-27 00:21:45,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6366 conditions, 3079 events. 2321/3079 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 12814 event pairs, 173 based on Foata normal form. 0/1054 useless extension candidates. Maximal degree in co-relation 5961. Up to 2943 conditions per place. [2023-08-27 00:21:45,988 INFO L140 encePairwiseOnDemand]: 236/255 looper letters, 45 selfloop transitions, 9 changer transitions 0/58 dead transitions. [2023-08-27 00:21:45,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 257 flow [2023-08-27 00:21:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:21:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:21:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-27 00:21:46,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2023-08-27 00:21:46,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-27 00:21:46,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-27 00:21:46,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:46,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-27 00:21:46,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,022 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 94 flow. Second operand 3 states and 345 transitions. [2023-08-27 00:21:46,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 257 flow [2023-08-27 00:21:46,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 235 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 00:21:46,029 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 153 flow [2023-08-27 00:21:46,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2023-08-27 00:21:46,037 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2023-08-27 00:21:46,037 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 153 flow [2023-08-27 00:21:46,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:46,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 00:21:46,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:21:46,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:46,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:46,040 INFO L85 PathProgramCache]: Analyzing trace with hash 19046841, now seen corresponding path program 1 times [2023-08-27 00:21:46,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:46,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645974425] [2023-08-27 00:21:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:46,197 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 00:21:46,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:46,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645974425] [2023-08-27 00:21:46,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645974425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:21:46,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:21:46,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:21:46,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523525395] [2023-08-27 00:21:46,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:21:46,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:21:46,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:46,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:21:46,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:21:46,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 255 [2023-08-27 00:21:46,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:46,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 255 [2023-08-27 00:21:46,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:46,549 INFO L124 PetriNetUnfolderBase]: 2279/3019 cut-off events. [2023-08-27 00:21:46,549 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-08-27 00:21:46,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8179 conditions, 3019 events. 2279/3019 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 12816 event pairs, 245 based on Foata normal form. 0/1303 useless extension candidates. Maximal degree in co-relation 2174. Up to 2901 conditions per place. [2023-08-27 00:21:46,572 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 45 selfloop transitions, 6 changer transitions 0/55 dead transitions. [2023-08-27 00:21:46,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 273 flow [2023-08-27 00:21:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:21:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:21:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-08-27 00:21:46,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42745098039215684 [2023-08-27 00:21:46,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-08-27 00:21:46,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-08-27 00:21:46,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:46,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-08-27 00:21:46,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,578 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 153 flow. Second operand 3 states and 327 transitions. [2023-08-27 00:21:46,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 273 flow [2023-08-27 00:21:46,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:21:46,581 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 144 flow [2023-08-27 00:21:46,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-27 00:21:46,582 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2023-08-27 00:21:46,582 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 144 flow [2023-08-27 00:21:46,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:46,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:21:46,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:21:46,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:46,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:46,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1129269583, now seen corresponding path program 1 times [2023-08-27 00:21:46,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:46,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331734571] [2023-08-27 00:21:46,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:46,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:46,663 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 00:21:46,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:46,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331734571] [2023-08-27 00:21:46,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331734571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:21:46,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:21:46,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:21:46,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045003786] [2023-08-27 00:21:46,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:21:46,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:21:46,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:21:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:21:46,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 255 [2023-08-27 00:21:46,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:46,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 255 [2023-08-27 00:21:46,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:46,961 INFO L124 PetriNetUnfolderBase]: 2173/3081 cut-off events. [2023-08-27 00:21:46,961 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2023-08-27 00:21:46,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8133 conditions, 3081 events. 2173/3081 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 16307 event pairs, 773 based on Foata normal form. 0/1499 useless extension candidates. Maximal degree in co-relation 2034. Up to 2363 conditions per place. [2023-08-27 00:21:46,984 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 54 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-08-27 00:21:46,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 327 flow [2023-08-27 00:21:46,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:21:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:21:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-08-27 00:21:46,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2023-08-27 00:21:46,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-08-27 00:21:46,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-08-27 00:21:46,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:46,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-08-27 00:21:46,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,992 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 144 flow. Second operand 3 states and 335 transitions. [2023-08-27 00:21:46,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 327 flow [2023-08-27 00:21:46,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:21:46,995 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 170 flow [2023-08-27 00:21:46,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-27 00:21:46,997 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-08-27 00:21:46,997 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 170 flow [2023-08-27 00:21:46,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:46,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:46,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:21:46,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 00:21:47,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:47,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:47,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1124156060, now seen corresponding path program 1 times [2023-08-27 00:21:47,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:47,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515948550] [2023-08-27 00:21:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:47,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:47,097 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 00:21:47,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:47,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515948550] [2023-08-27 00:21:47,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515948550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:21:47,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664269379] [2023-08-27 00:21:47,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:47,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:21:47,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:21:47,101 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 00:21:47,126 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 00:21:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:47,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 00:21:47,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:21:47,258 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 00:21:47,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:21:47,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664269379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:21:47,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:21:47,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-27 00:21:47,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875629478] [2023-08-27 00:21:47,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:21:47,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:21:47,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:47,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:21:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:21:47,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 255 [2023-08-27 00:21:47,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:47,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:47,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 255 [2023-08-27 00:21:47,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:47,483 INFO L124 PetriNetUnfolderBase]: 1419/2161 cut-off events. [2023-08-27 00:21:47,483 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2023-08-27 00:21:47,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6062 conditions, 2161 events. 1419/2161 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 13681 event pairs, 1191 based on Foata normal form. 0/1352 useless extension candidates. Maximal degree in co-relation 3826. Up to 2142 conditions per place. [2023-08-27 00:21:47,498 INFO L140 encePairwiseOnDemand]: 252/255 looper letters, 33 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-27 00:21:47,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 212 flow [2023-08-27 00:21:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:21:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:21:47,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-27 00:21:47,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41045751633986927 [2023-08-27 00:21:47,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-27 00:21:47,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-27 00:21:47,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:47,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-27 00:21:47,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:47,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:47,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:47,503 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 170 flow. Second operand 3 states and 314 transitions. [2023-08-27 00:21:47,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 212 flow [2023-08-27 00:21:47,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:21:47,505 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 142 flow [2023-08-27 00:21:47,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=40, 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=142, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-27 00:21:47,506 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2023-08-27 00:21:47,506 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 142 flow [2023-08-27 00:21:47,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:47,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:47,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 00:21:47,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 00:21:47,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:21:47,713 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:47,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1124156056, now seen corresponding path program 1 times [2023-08-27 00:21:47,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:47,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980453529] [2023-08-27 00:21:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:47,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:47,789 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 00:21:47,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:47,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980453529] [2023-08-27 00:21:47,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980453529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:21:47,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560425510] [2023-08-27 00:21:47,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:47,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:21:47,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:21:47,792 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 00:21:47,821 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 00:21:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:47,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 00:21:47,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:21:47,961 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 00:21:47,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:21:48,198 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 00:21:48,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560425510] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:21:48,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:21:48,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-27 00:21:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068649835] [2023-08-27 00:21:48,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:21:48,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 00:21:48,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 00:21:48,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:21:48,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 255 [2023-08-27 00:21:48,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 142 flow. Second operand has 8 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:48,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:48,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 255 [2023-08-27 00:21:48,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:48,983 INFO L124 PetriNetUnfolderBase]: 4383/6471 cut-off events. [2023-08-27 00:21:48,983 INFO L125 PetriNetUnfolderBase]: For 1452/1452 co-relation queries the response was YES. [2023-08-27 00:21:48,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17997 conditions, 6471 events. 4383/6471 cut-off events. For 1452/1452 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 36770 event pairs, 179 based on Foata normal form. 20/4065 useless extension candidates. Maximal degree in co-relation 17987. Up to 3599 conditions per place. [2023-08-27 00:21:49,029 INFO L140 encePairwiseOnDemand]: 240/255 looper letters, 128 selfloop transitions, 56 changer transitions 0/188 dead transitions. [2023-08-27 00:21:49,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 188 transitions, 1036 flow [2023-08-27 00:21:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 00:21:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 00:21:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1014 transitions. [2023-08-27 00:21:49,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418300653594771 [2023-08-27 00:21:49,033 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1014 transitions. [2023-08-27 00:21:49,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1014 transitions. [2023-08-27 00:21:49,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:49,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1014 transitions. [2023-08-27 00:21:49,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.66666666666667) internal successors, (1014), 9 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:49,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:49,041 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:49,041 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 142 flow. Second operand 9 states and 1014 transitions. [2023-08-27 00:21:49,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 188 transitions, 1036 flow [2023-08-27 00:21:49,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 188 transitions, 1035 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:21:49,047 INFO L231 Difference]: Finished difference. Result has 56 places, 94 transitions, 712 flow [2023-08-27 00:21:49,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=712, PETRI_PLACES=56, PETRI_TRANSITIONS=94} [2023-08-27 00:21:49,049 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-08-27 00:21:49,049 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 94 transitions, 712 flow [2023-08-27 00:21:49,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:49,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:49,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:21:49,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 00:21:49,256 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 00:21:49,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:49,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:49,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1399311513, now seen corresponding path program 1 times [2023-08-27 00:21:49,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:49,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193645523] [2023-08-27 00:21:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:49,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:49,419 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 00:21:49,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:49,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193645523] [2023-08-27 00:21:49,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193645523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:21:49,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:21:49,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:21:49,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026556890] [2023-08-27 00:21:49,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:21:49,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:21:49,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:49,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:21:49,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:21:49,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 255 [2023-08-27 00:21:49,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 94 transitions, 712 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:49,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:49,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 255 [2023-08-27 00:21:49,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:50,065 INFO L124 PetriNetUnfolderBase]: 4565/6800 cut-off events. [2023-08-27 00:21:50,065 INFO L125 PetriNetUnfolderBase]: For 10859/10859 co-relation queries the response was YES. [2023-08-27 00:21:50,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24204 conditions, 6800 events. 4565/6800 cut-off events. For 10859/10859 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 36946 event pairs, 569 based on Foata normal form. 90/6056 useless extension candidates. Maximal degree in co-relation 24186. Up to 6628 conditions per place. [2023-08-27 00:21:50,107 INFO L140 encePairwiseOnDemand]: 251/255 looper letters, 99 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2023-08-27 00:21:50,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 102 transitions, 875 flow [2023-08-27 00:21:50,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:21:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:21:50,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2023-08-27 00:21:50,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3764705882352941 [2023-08-27 00:21:50,110 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 384 transitions. [2023-08-27 00:21:50,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 384 transitions. [2023-08-27 00:21:50,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:50,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 384 transitions. [2023-08-27 00:21:50,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:50,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:50,113 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:50,113 INFO L175 Difference]: Start difference. First operand has 56 places, 94 transitions, 712 flow. Second operand 4 states and 384 transitions. [2023-08-27 00:21:50,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 102 transitions, 875 flow [2023-08-27 00:21:50,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 102 transitions, 832 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-08-27 00:21:50,161 INFO L231 Difference]: Finished difference. Result has 55 places, 86 transitions, 597 flow [2023-08-27 00:21:50,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=597, PETRI_PLACES=55, PETRI_TRANSITIONS=86} [2023-08-27 00:21:50,162 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-08-27 00:21:50,162 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 86 transitions, 597 flow [2023-08-27 00:21:50,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:50,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:50,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:21:50,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 00:21:50,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:50,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:50,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1442331460, now seen corresponding path program 1 times [2023-08-27 00:21:50,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:50,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30781134] [2023-08-27 00:21:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:50,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:50,247 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 00:21:50,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:50,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30781134] [2023-08-27 00:21:50,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30781134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:21:50,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:21:50,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:21:50,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540157530] [2023-08-27 00:21:50,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:21:50,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:21:50,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:50,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:21:50,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:21:50,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 255 [2023-08-27 00:21:50,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 86 transitions, 597 flow. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:50,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:50,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 255 [2023-08-27 00:21:50,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:50,920 INFO L124 PetriNetUnfolderBase]: 4121/6401 cut-off events. [2023-08-27 00:21:50,920 INFO L125 PetriNetUnfolderBase]: For 13978/13978 co-relation queries the response was YES. [2023-08-27 00:21:50,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23250 conditions, 6401 events. 4121/6401 cut-off events. For 13978/13978 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 40139 event pairs, 339 based on Foata normal form. 78/5689 useless extension candidates. Maximal degree in co-relation 23232. Up to 4073 conditions per place. [2023-08-27 00:21:50,963 INFO L140 encePairwiseOnDemand]: 248/255 looper letters, 135 selfloop transitions, 14 changer transitions 0/153 dead transitions. [2023-08-27 00:21:50,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 153 transitions, 1296 flow [2023-08-27 00:21:50,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:21:50,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:21:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 434 transitions. [2023-08-27 00:21:50,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42549019607843136 [2023-08-27 00:21:50,965 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 434 transitions. [2023-08-27 00:21:50,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 434 transitions. [2023-08-27 00:21:50,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:50,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 434 transitions. [2023-08-27 00:21:50,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:50,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:50,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:50,968 INFO L175 Difference]: Start difference. First operand has 55 places, 86 transitions, 597 flow. Second operand 4 states and 434 transitions. [2023-08-27 00:21:50,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 153 transitions, 1296 flow [2023-08-27 00:21:50,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 153 transitions, 1292 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:21:50,989 INFO L231 Difference]: Finished difference. Result has 58 places, 95 transitions, 762 flow [2023-08-27 00:21:50,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=762, PETRI_PLACES=58, PETRI_TRANSITIONS=95} [2023-08-27 00:21:50,989 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2023-08-27 00:21:50,990 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 95 transitions, 762 flow [2023-08-27 00:21:50,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:50,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:50,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:21:50,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 00:21:50,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:50,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:50,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1995728512, now seen corresponding path program 1 times [2023-08-27 00:21:50,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:50,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299737820] [2023-08-27 00:21:50,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:50,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:51,079 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 00:21:51,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:51,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299737820] [2023-08-27 00:21:51,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299737820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:21:51,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:21:51,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:21:51,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718435287] [2023-08-27 00:21:51,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:21:51,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:21:51,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:51,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:21:51,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:21:51,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 255 [2023-08-27 00:21:51,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 95 transitions, 762 flow. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:51,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:51,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 255 [2023-08-27 00:21:51,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:51,692 INFO L124 PetriNetUnfolderBase]: 3743/5881 cut-off events. [2023-08-27 00:21:51,692 INFO L125 PetriNetUnfolderBase]: For 18798/18798 co-relation queries the response was YES. [2023-08-27 00:21:51,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22040 conditions, 5881 events. 3743/5881 cut-off events. For 18798/18798 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 37139 event pairs, 393 based on Foata normal form. 226/5701 useless extension candidates. Maximal degree in co-relation 22020. Up to 5502 conditions per place. [2023-08-27 00:21:51,733 INFO L140 encePairwiseOnDemand]: 251/255 looper letters, 91 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2023-08-27 00:21:51,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 859 flow [2023-08-27 00:21:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:21:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:21:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 409 transitions. [2023-08-27 00:21:51,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40098039215686276 [2023-08-27 00:21:51,736 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 409 transitions. [2023-08-27 00:21:51,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 409 transitions. [2023-08-27 00:21:51,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:51,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 409 transitions. [2023-08-27 00:21:51,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:51,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:51,739 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:51,739 INFO L175 Difference]: Start difference. First operand has 58 places, 95 transitions, 762 flow. Second operand 4 states and 409 transitions. [2023-08-27 00:21:51,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 859 flow [2023-08-27 00:21:51,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 840 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:21:51,760 INFO L231 Difference]: Finished difference. Result has 57 places, 84 transitions, 625 flow [2023-08-27 00:21:51,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=625, PETRI_PLACES=57, PETRI_TRANSITIONS=84} [2023-08-27 00:21:51,761 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2023-08-27 00:21:51,761 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 84 transitions, 625 flow [2023-08-27 00:21:51,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:51,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:51,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:21:51,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 00:21:51,761 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:51,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1955298091, now seen corresponding path program 1 times [2023-08-27 00:21:51,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:51,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191387891] [2023-08-27 00:21:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:51,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:51,847 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 00:21:51,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:51,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191387891] [2023-08-27 00:21:51,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191387891] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:21:51,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4517305] [2023-08-27 00:21:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:51,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:21:51,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:21:51,849 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 00:21:51,874 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 00:21:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:51,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 00:21:51,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:21:52,011 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 00:21:52,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:21:52,621 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 00:21:52,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4517305] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:21:52,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:21:52,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 8 [2023-08-27 00:21:52,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130057811] [2023-08-27 00:21:52,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:21:52,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 00:21:52,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:52,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 00:21:52,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-08-27 00:21:52,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 255 [2023-08-27 00:21:52,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 84 transitions, 625 flow. Second operand has 10 states, 10 states have (on average 91.1) internal successors, (911), 10 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:52,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:52,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 255 [2023-08-27 00:21:52,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:54,007 INFO L124 PetriNetUnfolderBase]: 6813/10843 cut-off events. [2023-08-27 00:21:54,008 INFO L125 PetriNetUnfolderBase]: For 30374/30374 co-relation queries the response was YES. [2023-08-27 00:21:54,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40516 conditions, 10843 events. 6813/10843 cut-off events. For 30374/30374 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 77349 event pairs, 361 based on Foata normal form. 170/10319 useless extension candidates. Maximal degree in co-relation 40497. Up to 4773 conditions per place. [2023-08-27 00:21:54,090 INFO L140 encePairwiseOnDemand]: 243/255 looper letters, 261 selfloop transitions, 113 changer transitions 0/378 dead transitions. [2023-08-27 00:21:54,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 378 transitions, 3246 flow [2023-08-27 00:21:54,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 00:21:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 00:21:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1196 transitions. [2023-08-27 00:21:54,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42638146167557933 [2023-08-27 00:21:54,098 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1196 transitions. [2023-08-27 00:21:54,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1196 transitions. [2023-08-27 00:21:54,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:54,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1196 transitions. [2023-08-27 00:21:54,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.72727272727273) internal successors, (1196), 11 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:54,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:54,107 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:54,107 INFO L175 Difference]: Start difference. First operand has 57 places, 84 transitions, 625 flow. Second operand 11 states and 1196 transitions. [2023-08-27 00:21:54,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 378 transitions, 3246 flow [2023-08-27 00:21:54,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 378 transitions, 3200 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 00:21:54,173 INFO L231 Difference]: Finished difference. Result has 72 places, 186 transitions, 2093 flow [2023-08-27 00:21:54,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2093, PETRI_PLACES=72, PETRI_TRANSITIONS=186} [2023-08-27 00:21:54,174 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2023-08-27 00:21:54,174 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 186 transitions, 2093 flow [2023-08-27 00:21:54,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.1) internal successors, (911), 10 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:54,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:54,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:21:54,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 00:21:54,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:21:54,382 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:54,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:54,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1398645271, now seen corresponding path program 1 times [2023-08-27 00:21:54,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:54,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648230741] [2023-08-27 00:21:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:54,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:54,462 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 00:21:54,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:54,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648230741] [2023-08-27 00:21:54,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648230741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:21:54,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:21:54,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:21:54,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82809811] [2023-08-27 00:21:54,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:21:54,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:21:54,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:54,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:21:54,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:21:54,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 255 [2023-08-27 00:21:54,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 186 transitions, 2093 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:54,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:54,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 255 [2023-08-27 00:21:54,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:55,552 INFO L124 PetriNetUnfolderBase]: 6677/10825 cut-off events. [2023-08-27 00:21:55,552 INFO L125 PetriNetUnfolderBase]: For 69386/69386 co-relation queries the response was YES. [2023-08-27 00:21:55,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48692 conditions, 10825 events. 6677/10825 cut-off events. For 69386/69386 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 78807 event pairs, 335 based on Foata normal form. 482/11269 useless extension candidates. Maximal degree in co-relation 48666. Up to 7157 conditions per place. [2023-08-27 00:21:55,643 INFO L140 encePairwiseOnDemand]: 242/255 looper letters, 171 selfloop transitions, 76 changer transitions 0/251 dead transitions. [2023-08-27 00:21:55,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 251 transitions, 3157 flow [2023-08-27 00:21:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:21:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:21:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2023-08-27 00:21:55,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2023-08-27 00:21:55,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2023-08-27 00:21:55,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2023-08-27 00:21:55,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:55,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2023-08-27 00:21:55,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:55,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:55,648 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:55,648 INFO L175 Difference]: Start difference. First operand has 72 places, 186 transitions, 2093 flow. Second operand 4 states and 442 transitions. [2023-08-27 00:21:55,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 251 transitions, 3157 flow [2023-08-27 00:21:55,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 251 transitions, 3141 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 00:21:55,933 INFO L231 Difference]: Finished difference. Result has 74 places, 223 transitions, 3022 flow [2023-08-27 00:21:55,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3022, PETRI_PLACES=74, PETRI_TRANSITIONS=223} [2023-08-27 00:21:55,934 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2023-08-27 00:21:55,934 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 223 transitions, 3022 flow [2023-08-27 00:21:55,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:55,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:55,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-27 00:21:55,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 00:21:55,934 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:55,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:55,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2017773894, now seen corresponding path program 1 times [2023-08-27 00:21:55,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:55,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474677134] [2023-08-27 00:21:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:55,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:21:55,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:55,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474677134] [2023-08-27 00:21:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474677134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:21:55,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:21:55,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:21:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746273229] [2023-08-27 00:21:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:21:55,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:21:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:55,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:21:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:21:55,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 255 [2023-08-27 00:21:55,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 223 transitions, 3022 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:55,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:55,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 255 [2023-08-27 00:21:55,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:56,806 INFO L124 PetriNetUnfolderBase]: 5277/8581 cut-off events. [2023-08-27 00:21:56,806 INFO L125 PetriNetUnfolderBase]: For 96264/96264 co-relation queries the response was YES. [2023-08-27 00:21:56,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43138 conditions, 8581 events. 5277/8581 cut-off events. For 96264/96264 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 64354 event pairs, 3545 based on Foata normal form. 678/9130 useless extension candidates. Maximal degree in co-relation 43110. Up to 8268 conditions per place. [2023-08-27 00:21:56,872 INFO L140 encePairwiseOnDemand]: 252/255 looper letters, 178 selfloop transitions, 1 changer transitions 0/183 dead transitions. [2023-08-27 00:21:56,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 183 transitions, 2872 flow [2023-08-27 00:21:56,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:21:56,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:21:56,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-27 00:21:56,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013071895424837 [2023-08-27 00:21:56,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-27 00:21:56,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-27 00:21:56,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:56,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-27 00:21:56,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:56,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:56,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:56,877 INFO L175 Difference]: Start difference. First operand has 74 places, 223 transitions, 3022 flow. Second operand 3 states and 307 transitions. [2023-08-27 00:21:56,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 183 transitions, 2872 flow [2023-08-27 00:21:57,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 183 transitions, 2839 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-27 00:21:57,109 INFO L231 Difference]: Finished difference. Result has 73 places, 183 transitions, 2483 flow [2023-08-27 00:21:57,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2483, PETRI_PLACES=73, PETRI_TRANSITIONS=183} [2023-08-27 00:21:57,109 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2023-08-27 00:21:57,109 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 183 transitions, 2483 flow [2023-08-27 00:21:57,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:57,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:57,110 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-27 00:21:57,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 00:21:57,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:57,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:57,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2017773895, now seen corresponding path program 1 times [2023-08-27 00:21:57,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:57,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953223847] [2023-08-27 00:21:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:57,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:57,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:21:57,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:57,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953223847] [2023-08-27 00:21:57,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953223847] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:21:57,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:21:57,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:21:57,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148986499] [2023-08-27 00:21:57,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:21:57,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:21:57,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:57,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:21:57,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:21:57,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 255 [2023-08-27 00:21:57,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 183 transitions, 2483 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:57,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:57,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 255 [2023-08-27 00:21:57,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:57,757 INFO L124 PetriNetUnfolderBase]: 3687/6073 cut-off events. [2023-08-27 00:21:57,757 INFO L125 PetriNetUnfolderBase]: For 64459/64459 co-relation queries the response was YES. [2023-08-27 00:21:57,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27350 conditions, 6073 events. 3687/6073 cut-off events. For 64459/64459 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 43684 event pairs, 2537 based on Foata normal form. 727/6696 useless extension candidates. Maximal degree in co-relation 27329. Up to 5812 conditions per place. [2023-08-27 00:21:57,790 INFO L140 encePairwiseOnDemand]: 252/255 looper letters, 117 selfloop transitions, 1 changer transitions 0/122 dead transitions. [2023-08-27 00:21:57,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 122 transitions, 1731 flow [2023-08-27 00:21:57,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:21:57,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:21:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-08-27 00:21:57,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39869281045751637 [2023-08-27 00:21:57,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-08-27 00:21:57,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-08-27 00:21:57,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:57,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-08-27 00:21:57,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:57,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:57,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:57,795 INFO L175 Difference]: Start difference. First operand has 73 places, 183 transitions, 2483 flow. Second operand 3 states and 305 transitions. [2023-08-27 00:21:57,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 122 transitions, 1731 flow [2023-08-27 00:21:57,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 122 transitions, 1691 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 00:21:57,870 INFO L231 Difference]: Finished difference. Result has 68 places, 122 transitions, 1457 flow [2023-08-27 00:21:57,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1457, PETRI_PLACES=68, PETRI_TRANSITIONS=122} [2023-08-27 00:21:57,871 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2023-08-27 00:21:57,871 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 122 transitions, 1457 flow [2023-08-27 00:21:57,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:57,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:57,871 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-27 00:21:57,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 00:21:57,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:57,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:57,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2017773888, now seen corresponding path program 1 times [2023-08-27 00:21:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:57,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115582227] [2023-08-27 00:21:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:21:57,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:57,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115582227] [2023-08-27 00:21:57,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115582227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:21:57,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438411404] [2023-08-27 00:21:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:57,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:21:57,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:21:57,965 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 00:21:57,987 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 00:21:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:58,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 00:21:58,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:21:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:21:58,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:21:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:21:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438411404] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:21:58,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:21:58,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-27 00:21:58,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319821755] [2023-08-27 00:21:58,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:21:58,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 00:21:58,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:21:58,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 00:21:58,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-08-27 00:21:58,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 255 [2023-08-27 00:21:58,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 122 transitions, 1457 flow. Second operand has 10 states, 10 states have (on average 92.4) internal successors, (924), 10 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:58,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:21:58,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 255 [2023-08-27 00:21:58,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:21:59,381 INFO L124 PetriNetUnfolderBase]: 4615/7777 cut-off events. [2023-08-27 00:21:59,381 INFO L125 PetriNetUnfolderBase]: For 61848/61848 co-relation queries the response was YES. [2023-08-27 00:21:59,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34539 conditions, 7777 events. 4615/7777 cut-off events. For 61848/61848 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 54465 event pairs, 145 based on Foata normal form. 584/8347 useless extension candidates. Maximal degree in co-relation 34518. Up to 3225 conditions per place. [2023-08-27 00:21:59,427 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 169 selfloop transitions, 105 changer transitions 0/278 dead transitions. [2023-08-27 00:21:59,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 278 transitions, 3007 flow [2023-08-27 00:21:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 00:21:59,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 00:21:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1083 transitions. [2023-08-27 00:21:59,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42470588235294116 [2023-08-27 00:21:59,431 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1083 transitions. [2023-08-27 00:21:59,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1083 transitions. [2023-08-27 00:21:59,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:21:59,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1083 transitions. [2023-08-27 00:21:59,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.3) internal successors, (1083), 10 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:59,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:59,438 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 255.0) internal successors, (2805), 11 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:59,438 INFO L175 Difference]: Start difference. First operand has 68 places, 122 transitions, 1457 flow. Second operand 10 states and 1083 transitions. [2023-08-27 00:21:59,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 278 transitions, 3007 flow [2023-08-27 00:21:59,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 278 transitions, 3006 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:21:59,514 INFO L231 Difference]: Finished difference. Result has 80 places, 171 transitions, 2560 flow [2023-08-27 00:21:59,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2560, PETRI_PLACES=80, PETRI_TRANSITIONS=171} [2023-08-27 00:21:59,515 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2023-08-27 00:21:59,515 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 171 transitions, 2560 flow [2023-08-27 00:21:59,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 92.4) internal successors, (924), 10 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:21:59,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:21:59,515 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:21:59,521 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 00:21:59,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:21:59,718 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:21:59,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:21:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2140766906, now seen corresponding path program 1 times [2023-08-27 00:21:59,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:21:59,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315995582] [2023-08-27 00:21:59,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:59,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:21:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:21:59,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:21:59,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315995582] [2023-08-27 00:21:59,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315995582] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:21:59,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806043622] [2023-08-27 00:21:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:21:59,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:21:59,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:21:59,808 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 00:21:59,834 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 00:21:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:21:59,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 00:21:59,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:21:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:21:59,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:22:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:01,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806043622] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:22:01,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:22:01,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 10 [2023-08-27 00:22:01,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492948102] [2023-08-27 00:22:01,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:22:01,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:22:01,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:22:01,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:22:01,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-08-27 00:22:01,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 255 [2023-08-27 00:22:01,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 171 transitions, 2560 flow. Second operand has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:01,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:22:01,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 255 [2023-08-27 00:22:01,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:22:03,506 INFO L124 PetriNetUnfolderBase]: 7769/13393 cut-off events. [2023-08-27 00:22:03,506 INFO L125 PetriNetUnfolderBase]: For 144106/144106 co-relation queries the response was YES. [2023-08-27 00:22:03,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65686 conditions, 13393 events. 7769/13393 cut-off events. For 144106/144106 co-relation queries the response was YES. Maximal size of possible extension queue 1077. Compared 107204 event pairs, 413 based on Foata normal form. 520/13911 useless extension candidates. Maximal degree in co-relation 65661. Up to 4869 conditions per place. [2023-08-27 00:22:03,596 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 361 selfloop transitions, 162 changer transitions 0/527 dead transitions. [2023-08-27 00:22:03,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 527 transitions, 7146 flow [2023-08-27 00:22:03,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 00:22:03,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 00:22:03,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1769 transitions. [2023-08-27 00:22:03,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080738177623991 [2023-08-27 00:22:03,602 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1769 transitions. [2023-08-27 00:22:03,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1769 transitions. [2023-08-27 00:22:03,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:22:03,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1769 transitions. [2023-08-27 00:22:03,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 104.05882352941177) internal successors, (1769), 17 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:03,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 255.0) internal successors, (4590), 18 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:03,614 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 255.0) internal successors, (4590), 18 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:03,614 INFO L175 Difference]: Start difference. First operand has 80 places, 171 transitions, 2560 flow. Second operand 17 states and 1769 transitions. [2023-08-27 00:22:03,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 527 transitions, 7146 flow [2023-08-27 00:22:03,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 527 transitions, 6415 flow, removed 273 selfloop flow, removed 4 redundant places. [2023-08-27 00:22:03,856 INFO L231 Difference]: Finished difference. Result has 103 places, 283 transitions, 4687 flow [2023-08-27 00:22:03,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4687, PETRI_PLACES=103, PETRI_TRANSITIONS=283} [2023-08-27 00:22:03,856 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2023-08-27 00:22:03,856 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 283 transitions, 4687 flow [2023-08-27 00:22:03,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:03,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:22:03,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:22:03,865 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 00:22:04,062 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,SelfDestructingSolverStorable13 [2023-08-27 00:22:04,063 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:22:04,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:22:04,063 INFO L85 PathProgramCache]: Analyzing trace with hash 226668988, now seen corresponding path program 1 times [2023-08-27 00:22:04,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:22:04,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573506131] [2023-08-27 00:22:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:22:04,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:22:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:22:04,212 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 00:22:04,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:22:04,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573506131] [2023-08-27 00:22:04,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573506131] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:22:04,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861187588] [2023-08-27 00:22:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:22:04,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:22:04,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:22:04,214 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 00:22:04,217 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 00:22:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:22:04,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:22:04,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:22:04,355 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 00:22:04,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:22:04,739 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 00:22:04,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861187588] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:22:04,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:22:04,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-27 00:22:04,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546669093] [2023-08-27 00:22:04,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:22:04,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 00:22:04,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:22:04,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 00:22:04,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:22:04,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 255 [2023-08-27 00:22:04,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 283 transitions, 4687 flow. Second operand has 11 states, 11 states have (on average 90.9090909090909) internal successors, (1000), 11 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:04,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:22:04,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 255 [2023-08-27 00:22:04,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:22:07,361 INFO L124 PetriNetUnfolderBase]: 10755/18165 cut-off events. [2023-08-27 00:22:07,362 INFO L125 PetriNetUnfolderBase]: For 259582/259582 co-relation queries the response was YES. [2023-08-27 00:22:07,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96710 conditions, 18165 events. 10755/18165 cut-off events. For 259582/259582 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 147748 event pairs, 679 based on Foata normal form. 536/18687 useless extension candidates. Maximal degree in co-relation 96675. Up to 7895 conditions per place. [2023-08-27 00:22:07,516 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 315 selfloop transitions, 265 changer transitions 0/584 dead transitions. [2023-08-27 00:22:07,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 584 transitions, 9585 flow [2023-08-27 00:22:07,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:22:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:22:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1276 transitions. [2023-08-27 00:22:07,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169934640522876 [2023-08-27 00:22:07,520 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1276 transitions. [2023-08-27 00:22:07,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1276 transitions. [2023-08-27 00:22:07,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:22:07,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1276 transitions. [2023-08-27 00:22:07,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 106.33333333333333) internal successors, (1276), 12 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:07,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 255.0) internal successors, (3315), 13 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:07,528 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 255.0) internal successors, (3315), 13 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:07,528 INFO L175 Difference]: Start difference. First operand has 103 places, 283 transitions, 4687 flow. Second operand 12 states and 1276 transitions. [2023-08-27 00:22:07,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 584 transitions, 9585 flow [2023-08-27 00:22:08,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 584 transitions, 9072 flow, removed 247 selfloop flow, removed 3 redundant places. [2023-08-27 00:22:08,696 INFO L231 Difference]: Finished difference. Result has 118 places, 443 transitions, 8534 flow [2023-08-27 00:22:08,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4275, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8534, PETRI_PLACES=118, PETRI_TRANSITIONS=443} [2023-08-27 00:22:08,696 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 72 predicate places. [2023-08-27 00:22:08,696 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 443 transitions, 8534 flow [2023-08-27 00:22:08,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 90.9090909090909) internal successors, (1000), 11 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:08,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:22:08,697 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1] [2023-08-27 00:22:08,702 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 00:22:08,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 00:22:08,898 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:22:08,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:22:08,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2050445788, now seen corresponding path program 1 times [2023-08-27 00:22:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:22:08,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535553589] [2023-08-27 00:22:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:22:08,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:22:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:22:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:09,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:22:09,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535553589] [2023-08-27 00:22:09,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535553589] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:22:09,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592853656] [2023-08-27 00:22:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:22:09,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:22:09,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:22:09,153 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 00:22:09,156 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 00:22:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:22:09,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 00:22:09,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:22:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:09,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:22:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:10,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592853656] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:22:10,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:22:10,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-27 00:22:10,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708576692] [2023-08-27 00:22:10,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:22:10,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:22:10,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:22:10,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:22:10,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:22:10,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 255 [2023-08-27 00:22:10,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 443 transitions, 8534 flow. Second operand has 13 states, 13 states have (on average 92.23076923076923) internal successors, (1199), 13 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:10,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:22:10,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 255 [2023-08-27 00:22:10,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:22:15,384 INFO L124 PetriNetUnfolderBase]: 15509/26631 cut-off events. [2023-08-27 00:22:15,384 INFO L125 PetriNetUnfolderBase]: For 493010/493010 co-relation queries the response was YES. [2023-08-27 00:22:15,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150241 conditions, 26631 events. 15509/26631 cut-off events. For 493010/493010 co-relation queries the response was YES. Maximal size of possible extension queue 1929. Compared 232442 event pairs, 731 based on Foata normal form. 1012/27641 useless extension candidates. Maximal degree in co-relation 150198. Up to 7655 conditions per place. [2023-08-27 00:22:15,695 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 586 selfloop transitions, 360 changer transitions 0/950 dead transitions. [2023-08-27 00:22:15,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 950 transitions, 17168 flow [2023-08-27 00:22:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 00:22:15,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 00:22:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2044 transitions. [2023-08-27 00:22:15,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4218782249742002 [2023-08-27 00:22:15,701 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2044 transitions. [2023-08-27 00:22:15,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2044 transitions. [2023-08-27 00:22:15,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:22:15,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2044 transitions. [2023-08-27 00:22:15,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 107.57894736842105) internal successors, (2044), 19 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:15,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 255.0) internal successors, (5100), 20 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:15,713 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 255.0) internal successors, (5100), 20 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:15,713 INFO L175 Difference]: Start difference. First operand has 118 places, 443 transitions, 8534 flow. Second operand 19 states and 2044 transitions. [2023-08-27 00:22:15,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 950 transitions, 17168 flow [2023-08-27 00:22:18,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 950 transitions, 16273 flow, removed 446 selfloop flow, removed 2 redundant places. [2023-08-27 00:22:18,701 INFO L231 Difference]: Finished difference. Result has 142 places, 623 transitions, 13096 flow [2023-08-27 00:22:18,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=7226, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13096, PETRI_PLACES=142, PETRI_TRANSITIONS=623} [2023-08-27 00:22:18,702 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 96 predicate places. [2023-08-27 00:22:18,702 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 623 transitions, 13096 flow [2023-08-27 00:22:18,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 92.23076923076923) internal successors, (1199), 13 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:18,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:22:18,703 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:22:18,710 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 00:22:18,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:22:18,908 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:22:18,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:22:18,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2101096136, now seen corresponding path program 1 times [2023-08-27 00:22:18,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:22:18,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248316688] [2023-08-27 00:22:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:22:18,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:22:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:22:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:22:19,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:22:19,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248316688] [2023-08-27 00:22:19,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248316688] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:22:19,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624278906] [2023-08-27 00:22:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:22:19,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:22:19,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:22:19,053 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 00:22:19,075 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 00:22:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:22:19,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-27 00:22:19,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:22:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:19,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:22:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:19,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624278906] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:22:19,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:22:19,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 11 [2023-08-27 00:22:19,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016705563] [2023-08-27 00:22:19,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:22:19,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:22:19,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:22:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:22:19,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:22:19,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 255 [2023-08-27 00:22:19,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 623 transitions, 13096 flow. Second operand has 13 states, 13 states have (on average 90.84615384615384) internal successors, (1181), 13 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 00:22:19,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:22:19,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 255 [2023-08-27 00:22:19,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:22:26,425 INFO L124 PetriNetUnfolderBase]: 16953/28871 cut-off events. [2023-08-27 00:22:26,425 INFO L125 PetriNetUnfolderBase]: For 628878/628878 co-relation queries the response was YES. [2023-08-27 00:22:26,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174739 conditions, 28871 events. 16953/28871 cut-off events. For 628878/628878 co-relation queries the response was YES. Maximal size of possible extension queue 2136. Compared 251707 event pairs, 989 based on Foata normal form. 430/29299 useless extension candidates. Maximal degree in co-relation 174688. Up to 14833 conditions per place. [2023-08-27 00:22:26,711 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 530 selfloop transitions, 391 changer transitions 0/925 dead transitions. [2023-08-27 00:22:26,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 925 transitions, 18478 flow [2023-08-27 00:22:26,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 00:22:26,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 00:22:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1769 transitions. [2023-08-27 00:22:26,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080738177623991 [2023-08-27 00:22:26,714 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1769 transitions. [2023-08-27 00:22:26,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1769 transitions. [2023-08-27 00:22:26,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:22:26,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1769 transitions. [2023-08-27 00:22:26,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 104.05882352941177) internal successors, (1769), 17 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:26,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 255.0) internal successors, (4590), 18 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:26,723 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 255.0) internal successors, (4590), 18 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:26,723 INFO L175 Difference]: Start difference. First operand has 142 places, 623 transitions, 13096 flow. Second operand 17 states and 1769 transitions. [2023-08-27 00:22:26,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 925 transitions, 18478 flow [2023-08-27 00:22:31,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 925 transitions, 17570 flow, removed 448 selfloop flow, removed 3 redundant places. [2023-08-27 00:22:31,765 INFO L231 Difference]: Finished difference. Result has 163 places, 734 transitions, 16464 flow [2023-08-27 00:22:31,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=12255, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=16464, PETRI_PLACES=163, PETRI_TRANSITIONS=734} [2023-08-27 00:22:31,766 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 117 predicate places. [2023-08-27 00:22:31,766 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 734 transitions, 16464 flow [2023-08-27 00:22:31,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 90.84615384615384) internal successors, (1181), 13 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 00:22:31,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:22:31,767 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:22:31,772 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 00:22:31,967 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,SelfDestructingSolverStorable16 [2023-08-27 00:22:31,968 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:22:31,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:22:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash 363163128, now seen corresponding path program 1 times [2023-08-27 00:22:31,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:22:31,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765973448] [2023-08-27 00:22:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:22:31,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:22:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:22:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:32,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:22:32,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765973448] [2023-08-27 00:22:32,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765973448] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:22:32,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314301342] [2023-08-27 00:22:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:22:32,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:22:32,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:22:32,230 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 00:22:32,237 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 00:22:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:22:32,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 00:22:32,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:22:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:32,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:22:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:33,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314301342] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:22:33,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:22:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-27 00:22:33,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249797638] [2023-08-27 00:22:33,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:22:33,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 00:22:33,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:22:33,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 00:22:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2023-08-27 00:22:33,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 255 [2023-08-27 00:22:33,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 734 transitions, 16464 flow. Second operand has 17 states, 17 states have (on average 90.58823529411765) internal successors, (1540), 17 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:33,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:22:33,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 255 [2023-08-27 00:22:33,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:22:43,793 INFO L124 PetriNetUnfolderBase]: 23593/39917 cut-off events. [2023-08-27 00:22:43,794 INFO L125 PetriNetUnfolderBase]: For 1320928/1320928 co-relation queries the response was YES. [2023-08-27 00:22:44,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262576 conditions, 39917 events. 23593/39917 cut-off events. For 1320928/1320928 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 352627 event pairs, 337 based on Foata normal form. 2022/41937 useless extension candidates. Maximal degree in co-relation 262516. Up to 9999 conditions per place. [2023-08-27 00:22:44,542 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 505 selfloop transitions, 709 changer transitions 0/1218 dead transitions. [2023-08-27 00:22:44,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1218 transitions, 25338 flow [2023-08-27 00:22:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 00:22:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 00:22:44,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2220 transitions. [2023-08-27 00:22:44,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41456582633053224 [2023-08-27 00:22:44,546 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2220 transitions. [2023-08-27 00:22:44,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2220 transitions. [2023-08-27 00:22:44,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:22:44,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2220 transitions. [2023-08-27 00:22:44,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 105.71428571428571) internal successors, (2220), 21 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:44,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 255.0) internal successors, (5610), 22 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:44,556 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 255.0) internal successors, (5610), 22 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:44,556 INFO L175 Difference]: Start difference. First operand has 163 places, 734 transitions, 16464 flow. Second operand 21 states and 2220 transitions. [2023-08-27 00:22:44,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1218 transitions, 25338 flow [2023-08-27 00:22:56,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 1218 transitions, 24017 flow, removed 653 selfloop flow, removed 4 redundant places. [2023-08-27 00:22:56,696 INFO L231 Difference]: Finished difference. Result has 189 places, 947 transitions, 22701 flow [2023-08-27 00:22:56,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=13043, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=22701, PETRI_PLACES=189, PETRI_TRANSITIONS=947} [2023-08-27 00:22:56,697 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 143 predicate places. [2023-08-27 00:22:56,697 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 947 transitions, 22701 flow [2023-08-27 00:22:56,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 90.58823529411765) internal successors, (1540), 17 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:56,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:22:56,698 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:22:56,706 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 00:22:56,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 00:22:56,903 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:22:56,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:22:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2141433843, now seen corresponding path program 2 times [2023-08-27 00:22:56,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:22:56,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003933072] [2023-08-27 00:22:56,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:22:56,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:22:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:22:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:57,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:22:57,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003933072] [2023-08-27 00:22:57,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003933072] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:22:57,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681364053] [2023-08-27 00:22:57,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:22:57,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:22:57,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:22:57,042 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 00:22:57,045 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 00:22:57,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:22:57,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:22:57,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-27 00:22:57,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:22:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:57,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:22:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:22:57,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681364053] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:22:57,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:22:57,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-27 00:22:57,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560492887] [2023-08-27 00:22:57,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:22:57,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 00:22:57,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:22:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 00:22:57,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2023-08-27 00:22:57,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 255 [2023-08-27 00:22:57,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 947 transitions, 22701 flow. Second operand has 14 states, 14 states have (on average 90.71428571428571) internal successors, (1270), 14 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:22:57,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:22:57,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 255 [2023-08-27 00:22:57,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:23:15,103 INFO L124 PetriNetUnfolderBase]: 33903/56665 cut-off events. [2023-08-27 00:23:15,103 INFO L125 PetriNetUnfolderBase]: For 2300434/2300434 co-relation queries the response was YES. [2023-08-27 00:23:15,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413666 conditions, 56665 events. 33903/56665 cut-off events. For 2300434/2300434 co-relation queries the response was YES. Maximal size of possible extension queue 3768. Compared 511504 event pairs, 1023 based on Foata normal form. 1840/58503 useless extension candidates. Maximal degree in co-relation 413596. Up to 18867 conditions per place. [2023-08-27 00:23:16,080 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 711 selfloop transitions, 932 changer transitions 0/1647 dead transitions. [2023-08-27 00:23:16,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1647 transitions, 40979 flow [2023-08-27 00:23:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 00:23:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 00:23:16,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1995 transitions. [2023-08-27 00:23:16,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2023-08-27 00:23:16,083 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1995 transitions. [2023-08-27 00:23:16,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1995 transitions. [2023-08-27 00:23:16,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:23:16,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1995 transitions. [2023-08-27 00:23:16,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:23:16,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 255.0) internal successors, (5100), 20 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:23:16,091 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 255.0) internal successors, (5100), 20 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:23:16,091 INFO L175 Difference]: Start difference. First operand has 189 places, 947 transitions, 22701 flow. Second operand 19 states and 1995 transitions. [2023-08-27 00:23:16,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 1647 transitions, 40979 flow [2023-08-27 00:23:55,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 1647 transitions, 35772 flow, removed 2436 selfloop flow, removed 9 redundant places. [2023-08-27 00:23:55,394 INFO L231 Difference]: Finished difference. Result has 210 places, 1399 transitions, 34780 flow [2023-08-27 00:23:55,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=19088, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=905, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=514, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=34780, PETRI_PLACES=210, PETRI_TRANSITIONS=1399} [2023-08-27 00:23:55,395 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 164 predicate places. [2023-08-27 00:23:55,395 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 1399 transitions, 34780 flow [2023-08-27 00:23:55,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 90.71428571428571) internal successors, (1270), 14 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:23:55,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:23:55,396 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1] [2023-08-27 00:23:55,401 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 00:23:55,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:23:55,601 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:23:55,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:23:55,601 INFO L85 PathProgramCache]: Analyzing trace with hash 911595713, now seen corresponding path program 2 times [2023-08-27 00:23:55,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:23:55,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909386219] [2023-08-27 00:23:55,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:23:55,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:23:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:23:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:23:55,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:23:55,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909386219] [2023-08-27 00:23:55,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909386219] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:23:55,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140868586] [2023-08-27 00:23:55,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:23:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:23:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:23:55,858 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:23:55,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 00:23:55,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:23:55,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:23:55,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:23:55,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:23:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:23:56,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:23:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:23:56,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140868586] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:23:56,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:23:56,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-27 00:23:56,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282575224] [2023-08-27 00:23:56,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:23:56,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 00:23:56,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:23:56,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 00:23:56,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2023-08-27 00:23:56,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 255 [2023-08-27 00:23:56,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 1399 transitions, 34780 flow. Second operand has 16 states, 16 states have (on average 92.1875) internal successors, (1475), 16 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:23:56,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:23:56,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 255 [2023-08-27 00:23:56,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:24:18,476 INFO L124 PetriNetUnfolderBase]: 34133/56599 cut-off events. [2023-08-27 00:24:18,476 INFO L125 PetriNetUnfolderBase]: For 1934648/1934648 co-relation queries the response was YES. [2023-08-27 00:24:19,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390655 conditions, 56599 events. 34133/56599 cut-off events. For 1934648/1934648 co-relation queries the response was YES. Maximal size of possible extension queue 3776. Compared 506247 event pairs, 3939 based on Foata normal form. 498/57079 useless extension candidates. Maximal degree in co-relation 390575. Up to 39601 conditions per place. [2023-08-27 00:24:19,579 INFO L140 encePairwiseOnDemand]: 247/255 looper letters, 1152 selfloop transitions, 502 changer transitions 0/1658 dead transitions. [2023-08-27 00:24:19,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1658 transitions, 40184 flow [2023-08-27 00:24:19,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 00:24:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 00:24:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2494 transitions. [2023-08-27 00:24:19,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40751633986928104 [2023-08-27 00:24:19,582 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2494 transitions. [2023-08-27 00:24:19,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2494 transitions. [2023-08-27 00:24:19,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:24:19,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2494 transitions. [2023-08-27 00:24:19,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 103.91666666666667) internal successors, (2494), 24 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:24:19,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 255.0) internal successors, (6375), 25 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:24:19,589 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 255.0) internal successors, (6375), 25 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:24:19,589 INFO L175 Difference]: Start difference. First operand has 210 places, 1399 transitions, 34780 flow. Second operand 24 states and 2494 transitions. [2023-08-27 00:24:19,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1658 transitions, 40184 flow [2023-08-27 00:24:57,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1658 transitions, 38249 flow, removed 963 selfloop flow, removed 3 redundant places. [2023-08-27 00:24:57,970 INFO L231 Difference]: Finished difference. Result has 244 places, 1446 transitions, 36554 flow [2023-08-27 00:24:57,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=32094, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=437, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=908, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=36554, PETRI_PLACES=244, PETRI_TRANSITIONS=1446} [2023-08-27 00:24:57,972 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 198 predicate places. [2023-08-27 00:24:57,972 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 1446 transitions, 36554 flow [2023-08-27 00:24:57,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 92.1875) internal successors, (1475), 16 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:24:57,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:24:57,972 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:24:57,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 00:24:58,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:24:58,178 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:24:58,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:24:58,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1129453525, now seen corresponding path program 1 times [2023-08-27 00:24:58,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:24:58,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683913722] [2023-08-27 00:24:58,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:24:58,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:24:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:24:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:24:58,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:24:58,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683913722] [2023-08-27 00:24:58,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683913722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:24:58,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766182104] [2023-08-27 00:24:58,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:24:58,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:24:58,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:24:58,342 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:24:58,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 00:24:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:24:58,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 00:24:58,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:24:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:24:58,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:24:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:24:58,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766182104] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:24:58,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:24:58,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2023-08-27 00:24:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522085210] [2023-08-27 00:24:58,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:24:58,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 00:24:58,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:24:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 00:24:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-08-27 00:24:58,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 255 [2023-08-27 00:24:58,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 1446 transitions, 36554 flow. Second operand has 14 states, 14 states have (on average 92.85714285714286) internal successors, (1300), 14 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:24:58,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:24:58,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 255 [2023-08-27 00:24:58,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:25:35,994 INFO L124 PetriNetUnfolderBase]: 51253/87823 cut-off events. [2023-08-27 00:25:35,994 INFO L125 PetriNetUnfolderBase]: For 3401196/3401196 co-relation queries the response was YES. [2023-08-27 00:25:37,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585174 conditions, 87823 events. 51253/87823 cut-off events. For 3401196/3401196 co-relation queries the response was YES. Maximal size of possible extension queue 5286. Compared 866647 event pairs, 2811 based on Foata normal form. 4954/92775 useless extension candidates. Maximal degree in co-relation 585080. Up to 15313 conditions per place. [2023-08-27 00:25:37,952 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 1602 selfloop transitions, 918 changer transitions 0/2524 dead transitions. [2023-08-27 00:25:37,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 2524 transitions, 67890 flow [2023-08-27 00:25:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 00:25:37,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 00:25:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1739 transitions. [2023-08-27 00:25:37,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262254901960784 [2023-08-27 00:25:37,954 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1739 transitions. [2023-08-27 00:25:37,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1739 transitions. [2023-08-27 00:25:37,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:25:37,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1739 transitions. [2023-08-27 00:25:37,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 108.6875) internal successors, (1739), 16 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:25:37,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 255.0) internal successors, (4335), 17 states have internal predecessors, (4335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:25:37,960 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 255.0) internal successors, (4335), 17 states have internal predecessors, (4335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:25:37,960 INFO L175 Difference]: Start difference. First operand has 244 places, 1446 transitions, 36554 flow. Second operand 16 states and 1739 transitions. [2023-08-27 00:25:37,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 2524 transitions, 67890 flow [2023-08-27 00:26:51,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 2524 transitions, 65813 flow, removed 818 selfloop flow, removed 7 redundant places. [2023-08-27 00:26:51,270 INFO L231 Difference]: Finished difference. Result has 259 places, 1747 transitions, 48731 flow [2023-08-27 00:26:51,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=29849, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=465, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=48731, PETRI_PLACES=259, PETRI_TRANSITIONS=1747} [2023-08-27 00:26:51,271 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 213 predicate places. [2023-08-27 00:26:51,272 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 1747 transitions, 48731 flow [2023-08-27 00:26:51,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.85714285714286) internal successors, (1300), 14 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:26:51,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:26:51,272 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:26:51,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 00:26:51,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-27 00:26:51,477 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:26:51,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:26:51,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1174667971, now seen corresponding path program 1 times [2023-08-27 00:26:51,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:26:51,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251299253] [2023-08-27 00:26:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:26:51,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:26:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:26:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:26:51,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:26:51,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251299253] [2023-08-27 00:26:51,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251299253] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:26:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010674291] [2023-08-27 00:26:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:26:51,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:26:51,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:26:51,653 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:26:51,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 00:26:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:26:51,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:26:51,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:26:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:26:51,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:26:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:26:52,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010674291] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:26:52,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:26:52,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-27 00:26:52,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110605937] [2023-08-27 00:26:52,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:26:52,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 00:26:52,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:26:52,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 00:26:52,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2023-08-27 00:26:52,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 255 [2023-08-27 00:26:52,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 1747 transitions, 48731 flow. Second operand has 17 states, 17 states have (on average 90.58823529411765) internal successors, (1540), 17 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:26:52,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:26:52,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 255 [2023-08-27 00:26:52,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:27:47,365 INFO L124 PetriNetUnfolderBase]: 60369/102513 cut-off events. [2023-08-27 00:27:47,365 INFO L125 PetriNetUnfolderBase]: For 4936954/4936954 co-relation queries the response was YES. [2023-08-27 00:27:49,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752729 conditions, 102513 events. 60369/102513 cut-off events. For 4936954/4936954 co-relation queries the response was YES. Maximal size of possible extension queue 6583. Compared 1019957 event pairs, 2031 based on Foata normal form. 3020/105531 useless extension candidates. Maximal degree in co-relation 752625. Up to 37639 conditions per place. [2023-08-27 00:27:50,121 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 901 selfloop transitions, 1591 changer transitions 0/2496 dead transitions. [2023-08-27 00:27:50,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 2496 transitions, 71621 flow [2023-08-27 00:27:50,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 00:27:50,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 00:27:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2578 transitions. [2023-08-27 00:27:50,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4043921568627451 [2023-08-27 00:27:50,124 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2578 transitions. [2023-08-27 00:27:50,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2578 transitions. [2023-08-27 00:27:50,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:27:50,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2578 transitions. [2023-08-27 00:27:50,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 103.12) internal successors, (2578), 25 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:27:50,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 255.0) internal successors, (6630), 26 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:27:50,131 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 255.0) internal successors, (6630), 26 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:27:50,131 INFO L175 Difference]: Start difference. First operand has 259 places, 1747 transitions, 48731 flow. Second operand 25 states and 2578 transitions. [2023-08-27 00:27:50,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 2496 transitions, 71621 flow [2023-08-27 00:29:48,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 2496 transitions, 69804 flow, removed 901 selfloop flow, removed 2 redundant places. [2023-08-27 00:29:48,058 INFO L231 Difference]: Finished difference. Result has 296 places, 2243 transitions, 70234 flow [2023-08-27 00:29:48,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=45115, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=70234, PETRI_PLACES=296, PETRI_TRANSITIONS=2243} [2023-08-27 00:29:48,060 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 250 predicate places. [2023-08-27 00:29:48,060 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 2243 transitions, 70234 flow [2023-08-27 00:29:48,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 90.58823529411765) internal successors, (1540), 17 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:29:48,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:29:48,061 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:29:48,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 00:29:48,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 00:29:48,266 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:29:48,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:29:48,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2032475230, now seen corresponding path program 1 times [2023-08-27 00:29:48,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:29:48,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202513438] [2023-08-27 00:29:48,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:29:48,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:29:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:29:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:29:48,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:29:48,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202513438] [2023-08-27 00:29:48,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202513438] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:29:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257158783] [2023-08-27 00:29:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:29:48,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:29:48,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:29:48,613 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:29:48,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 00:29:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:29:48,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 00:29:48,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:29:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:29:49,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:29:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:29:50,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257158783] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:29:50,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:29:50,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 00:29:50,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34895240] [2023-08-27 00:29:50,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:29:50,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 00:29:50,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:29:50,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 00:29:50,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=297, Unknown=0, NotChecked=0, Total=462 [2023-08-27 00:29:50,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 255 [2023-08-27 00:29:50,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 2243 transitions, 70234 flow. Second operand has 22 states, 22 states have (on average 90.45454545454545) internal successors, (1990), 22 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:29:50,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:29:50,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 255 [2023-08-27 00:29:50,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:31:05,669 INFO L124 PetriNetUnfolderBase]: 66617/113139 cut-off events. [2023-08-27 00:31:05,670 INFO L125 PetriNetUnfolderBase]: For 6904464/6904464 co-relation queries the response was YES. [2023-08-27 00:31:08,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879355 conditions, 113139 events. 66617/113139 cut-off events. For 6904464/6904464 co-relation queries the response was YES. Maximal size of possible extension queue 6978. Compared 1135821 event pairs, 1843 based on Foata normal form. 4336/117473 useless extension candidates. Maximal degree in co-relation 879235. Up to 35585 conditions per place. [2023-08-27 00:31:09,123 INFO L140 encePairwiseOnDemand]: 246/255 looper letters, 1219 selfloop transitions, 1630 changer transitions 0/2853 dead transitions. [2023-08-27 00:31:09,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 2853 transitions, 85768 flow [2023-08-27 00:31:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-27 00:31:09,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-27 00:31:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3458 transitions. [2023-08-27 00:31:09,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4109328579916815 [2023-08-27 00:31:09,149 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3458 transitions. [2023-08-27 00:31:09,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3458 transitions. [2023-08-27 00:31:09,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:31:09,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3458 transitions. [2023-08-27 00:31:09,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 104.78787878787878) internal successors, (3458), 33 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:31:09,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 255.0) internal successors, (8670), 34 states have internal predecessors, (8670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:31:09,159 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 255.0) internal successors, (8670), 34 states have internal predecessors, (8670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:31:09,159 INFO L175 Difference]: Start difference. First operand has 296 places, 2243 transitions, 70234 flow. Second operand 33 states and 3458 transitions. [2023-08-27 00:31:09,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 2853 transitions, 85768 flow [2023-08-27 00:34:12,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 2853 transitions, 79161 flow, removed 3299 selfloop flow, removed 3 redundant places. [2023-08-27 00:34:12,151 INFO L231 Difference]: Finished difference. Result has 340 places, 2453 transitions, 76361 flow [2023-08-27 00:34:12,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=57019, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=76361, PETRI_PLACES=340, PETRI_TRANSITIONS=2453} [2023-08-27 00:34:12,153 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 294 predicate places. [2023-08-27 00:34:12,153 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 2453 transitions, 76361 flow [2023-08-27 00:34:12,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 90.45454545454545) internal successors, (1990), 22 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:34:12,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:34:12,154 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:34:12,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 00:34:12,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:34:12,354 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-27 00:34:12,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:34:12,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1826771540, now seen corresponding path program 1 times [2023-08-27 00:34:12,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:34:12,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383545649] [2023-08-27 00:34:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:34:12,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:34:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:34:12,513 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 00:34:12,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:34:12,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383545649] [2023-08-27 00:34:12,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383545649] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:34:12,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416089371] [2023-08-27 00:34:12,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:34:12,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:34:12,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:34:12,517 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:34:12,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 00:34:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:34:12,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 00:34:12,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:34:12,845 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 00:34:12,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:34:14,763 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 00:34:14,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416089371] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:34:14,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:34:14,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2023-08-27 00:34:14,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935605262] [2023-08-27 00:34:14,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:34:14,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 00:34:14,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:34:14,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 00:34:14,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2023-08-27 00:34:14,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 255 [2023-08-27 00:34:14,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 2453 transitions, 76361 flow. Second operand has 19 states, 19 states have (on average 90.57894736842105) internal successors, (1721), 19 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:34:14,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:34:14,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 255 [2023-08-27 00:34:14,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-27 00:34:57,731 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 00:34:57,741 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 00:34:58,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 00:34:58,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-27 00:34:59,745 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 36 remaining) [2023-08-27 00:34:59,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 00:34:59,745 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-27 00:34:59,746 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 36 remaining) [2023-08-27 00:34:59,746 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 36 remaining) [2023-08-27 00:34:59,746 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 36 remaining) [2023-08-27 00:34:59,746 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 36 remaining) [2023-08-27 00:34:59,746 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 36 remaining) [2023-08-27 00:34:59,746 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 36 remaining) [2023-08-27 00:34:59,746 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 36 remaining) [2023-08-27 00:34:59,746 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (18 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 36 remaining) [2023-08-27 00:34:59,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 36 remaining) [2023-08-27 00:34:59,748 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 36 remaining) [2023-08-27 00:34:59,749 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:34:59,752 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 00:34:59,753 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 00:34:59,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:34:59 BasicIcfg [2023-08-27 00:34:59,755 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 00:34:59,755 INFO L158 Benchmark]: Toolchain (without parser) took 800815.89ms. Allocated memory was 367.0MB in the beginning and 14.6GB in the end (delta: 14.3GB). Free memory was 342.6MB in the beginning and 8.4GB in the end (delta: -8.1GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. [2023-08-27 00:34:59,755 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 367.0MB. Free memory was 344.9MB in the beginning and 344.9MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 00:34:59,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.97ms. Allocated memory is still 367.0MB. Free memory was 342.6MB in the beginning and 331.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 00:34:59,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.87ms. Allocated memory is still 367.0MB. Free memory was 330.9MB in the beginning and 329.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 00:34:59,756 INFO L158 Benchmark]: Boogie Preprocessor took 42.37ms. Allocated memory is still 367.0MB. Free memory was 329.3MB in the beginning and 327.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 00:34:59,756 INFO L158 Benchmark]: RCFGBuilder took 520.32ms. Allocated memory is still 367.0MB. Free memory was 327.8MB in the beginning and 296.9MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-27 00:34:59,756 INFO L158 Benchmark]: TraceAbstraction took 799947.79ms. Allocated memory was 367.0MB in the beginning and 14.6GB in the end (delta: 14.3GB). Free memory was 296.3MB in the beginning and 8.4GB in the end (delta: -8.1GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. [2023-08-27 00:34:59,757 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 367.0MB. Free memory was 344.9MB in the beginning and 344.9MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 247.97ms. Allocated memory is still 367.0MB. Free memory was 342.6MB in the beginning and 331.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.87ms. Allocated memory is still 367.0MB. Free memory was 330.9MB in the beginning and 329.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 42.37ms. Allocated memory is still 367.0MB. Free memory was 329.3MB in the beginning and 327.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 520.32ms. Allocated memory is still 367.0MB. Free memory was 327.8MB in the beginning and 296.9MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * TraceAbstraction took 799947.79ms. Allocated memory was 367.0MB in the beginning and 14.6GB in the end (delta: 14.3GB). Free memory was 296.3MB in the beginning and 8.4GB in the end (delta: -8.1GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 116 PlacesBefore, 46 PlacesAfterwards, 113 TransitionsBefore, 38 TransitionsAfterwards, 2474 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 5 ChoiceCompositions, 128 TotalNumberOfCompositions, 4595 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3672, independent: 3628, independent conditional: 0, independent unconditional: 3628, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1217, independent: 1197, independent conditional: 0, independent unconditional: 1197, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3672, independent: 2431, independent conditional: 0, independent unconditional: 2431, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 1217, unknown conditional: 0, unknown unconditional: 1217] , Statistics on independence cache: Total cache size (in pairs): 137, Positive cache size: 132, Positive conditional cache size: 0, Positive unconditional cache size: 132, 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 - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 168 locations, 36 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: 799.8s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 773.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6673 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6673 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 855 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8481 IncrementalHoareTripleChecker+Invalid, 9336 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 855 mSolverCounterUnsat, 2 mSDtfsCounter, 8481 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 486 GetRequests, 199 SyntacticMatches, 3 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2157 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76361occurred in iteration=23, InterpolantAutomatonStates: 267, 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, 0.6s SatisfiabilityAnalysisTime, 16.0s InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 525 ConstructedInterpolants, 0 QuantifiedInterpolants, 12079 SizeOfPredicates, 258 NumberOfNonLiveVariables, 1588 ConjunctsInSsa, 181 ConjunctsInUnsatCore, 53 InterpolantComputations, 10 PerfectInterpolantSequences, 10/274 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown