/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 01:00:21,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 01:00:21,824 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 01:00:21,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 01:00:21,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 01:00:21,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 01:00:21,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 01:00:21,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 01:00:21,862 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 01:00:21,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 01:00:21,866 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 01:00:21,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 01:00:21,866 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 01:00:21,867 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 01:00:21,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 01:00:21,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 01:00:21,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 01:00:21,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 01:00:21,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 01:00:21,869 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 01:00:21,869 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 01:00:21,870 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 01:00:21,870 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 01:00:21,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 01:00:21,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 01:00:21,871 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 01:00:21,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 01:00:21,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:00:21,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 01:00:21,872 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 01:00:21,873 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 01:00:21,873 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 01:00:21,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 01:00:21,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 01:00:21,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 01:00:21,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 01:00:22,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 01:00:22,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 01:00:22,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 01:00:22,247 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 01:00:22,247 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 01:00:22,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2023-08-27 01:00:23,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 01:00:23,726 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 01:00:23,726 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2023-08-27 01:00:23,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c926aa1/e0429d4bbc4c49798ed305b761024fcc/FLAG6713fa54d [2023-08-27 01:00:23,754 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c926aa1/e0429d4bbc4c49798ed305b761024fcc [2023-08-27 01:00:23,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 01:00:23,761 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 01:00:23,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 01:00:23,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 01:00:23,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 01:00:23,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:00:23" (1/1) ... [2023-08-27 01:00:23,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd81475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:23, skipping insertion in model container [2023-08-27 01:00:23,769 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:00:23" (1/1) ... [2023-08-27 01:00:23,797 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 01:00:23,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:00:24,008 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 01:00:24,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:00:24,054 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:00:24,054 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:00:24,060 INFO L206 MainTranslator]: Completed translation [2023-08-27 01:00:24,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24 WrapperNode [2023-08-27 01:00:24,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 01:00:24,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 01:00:24,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 01:00:24,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 01:00:24,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (1/1) ... [2023-08-27 01:00:24,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (1/1) ... [2023-08-27 01:00:24,117 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 149 [2023-08-27 01:00:24,117 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 01:00:24,119 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 01:00:24,119 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 01:00:24,119 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 01:00:24,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (1/1) ... [2023-08-27 01:00:24,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (1/1) ... [2023-08-27 01:00:24,140 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (1/1) ... [2023-08-27 01:00:24,140 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (1/1) ... [2023-08-27 01:00:24,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (1/1) ... [2023-08-27 01:00:24,149 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (1/1) ... [2023-08-27 01:00:24,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (1/1) ... [2023-08-27 01:00:24,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (1/1) ... [2023-08-27 01:00:24,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 01:00:24,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 01:00:24,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 01:00:24,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 01:00:24,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (1/1) ... [2023-08-27 01:00:24,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:00:24,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:00:24,192 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 01:00:24,198 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 01:00:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 01:00:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 01:00:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 01:00:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 01:00:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 01:00:24,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 01:00:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 01:00:24,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 01:00:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 01:00:24,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 01:00:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 01:00:24,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 01:00:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 01:00:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 01:00:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 01:00:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 01:00:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 01:00:24,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 01:00:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 01:00:24,227 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 01:00:24,323 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 01:00:24,325 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 01:00:24,715 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 01:00:24,808 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 01:00:24,809 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 01:00:24,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:00:24 BoogieIcfgContainer [2023-08-27 01:00:24,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 01:00:24,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 01:00:24,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 01:00:24,817 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 01:00:24,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:00:23" (1/3) ... [2023-08-27 01:00:24,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8c67a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:00:24, skipping insertion in model container [2023-08-27 01:00:24,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:00:24" (2/3) ... [2023-08-27 01:00:24,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8c67a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:00:24, skipping insertion in model container [2023-08-27 01:00:24,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:00:24" (3/3) ... [2023-08-27 01:00:24,820 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2023-08-27 01:00:24,836 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 01:00:24,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-27 01:00:24,837 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 01:00:24,938 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 01:00:24,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 187 transitions, 406 flow [2023-08-27 01:00:25,075 INFO L124 PetriNetUnfolderBase]: 12/183 cut-off events. [2023-08-27 01:00:25,075 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 01:00:25,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 183 events. 12/183 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 217 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 148. Up to 2 conditions per place. [2023-08-27 01:00:25,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 187 transitions, 406 flow [2023-08-27 01:00:25,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 170 transitions, 364 flow [2023-08-27 01:00:25,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 01:00:25,104 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 170 transitions, 364 flow [2023-08-27 01:00:25,107 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 170 transitions, 364 flow [2023-08-27 01:00:25,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 170 transitions, 364 flow [2023-08-27 01:00:25,146 INFO L124 PetriNetUnfolderBase]: 12/170 cut-off events. [2023-08-27 01:00:25,146 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 01:00:25,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 170 events. 12/170 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 148. Up to 2 conditions per place. [2023-08-27 01:00:25,150 INFO L119 LiptonReduction]: Number of co-enabled transitions 4200 [2023-08-27 01:00:31,640 INFO L134 LiptonReduction]: Checked pairs total: 5985 [2023-08-27 01:00:31,640 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-08-27 01:00:31,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 01:00:31,656 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;@32359af0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 01:00:31,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-27 01:00:31,659 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 01:00:31,659 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 01:00:31,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:00:31,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:31,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 01:00:31,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:31,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:31,665 INFO L85 PathProgramCache]: Analyzing trace with hash 25351, now seen corresponding path program 1 times [2023-08-27 01:00:31,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:31,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145519469] [2023-08-27 01:00:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:31,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:31,971 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 01:00:31,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:31,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145519469] [2023-08-27 01:00:31,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145519469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:31,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:00:31,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:00:31,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098893068] [2023-08-27 01:00:31,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:31,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:31,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:32,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:32,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:00:32,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 352 [2023-08-27 01:00:32,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:32,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:32,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 352 [2023-08-27 01:00:32,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:33,025 INFO L124 PetriNetUnfolderBase]: 7435/9512 cut-off events. [2023-08-27 01:00:33,025 INFO L125 PetriNetUnfolderBase]: For 290/290 co-relation queries the response was YES. [2023-08-27 01:00:33,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19666 conditions, 9512 events. 7435/9512 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 43862 event pairs, 5195 based on Foata normal form. 0/4484 useless extension candidates. Maximal degree in co-relation 17376. Up to 9500 conditions per place. [2023-08-27 01:00:33,098 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 39 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-27 01:00:33,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 194 flow [2023-08-27 01:00:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-27 01:00:33,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753787878787879 [2023-08-27 01:00:33,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-27 01:00:33,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-27 01:00:33,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:33,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-27 01:00:33,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:33,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:33,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:33,135 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 110 flow. Second operand 3 states and 502 transitions. [2023-08-27 01:00:33,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 194 flow [2023-08-27 01:00:33,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 01:00:33,203 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 111 flow [2023-08-27 01:00:33,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-08-27 01:00:33,207 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2023-08-27 01:00:33,207 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 111 flow [2023-08-27 01:00:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:33,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:33,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:00:33,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 01:00:33,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:33,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:33,209 INFO L85 PathProgramCache]: Analyzing trace with hash 786990, now seen corresponding path program 1 times [2023-08-27 01:00:33,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:33,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530837467] [2023-08-27 01:00:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:33,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:33,282 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 01:00:33,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:33,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530837467] [2023-08-27 01:00:33,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530837467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:33,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:00:33,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:00:33,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773725181] [2023-08-27 01:00:33,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:33,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:33,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:33,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:33,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:00:33,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 352 [2023-08-27 01:00:33,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:33,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:33,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 352 [2023-08-27 01:00:33,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:34,073 INFO L124 PetriNetUnfolderBase]: 7435/9511 cut-off events. [2023-08-27 01:00:34,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:00:34,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19281 conditions, 9511 events. 7435/9511 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 43930 event pairs, 5195 based on Foata normal form. 0/4484 useless extension candidates. Maximal degree in co-relation 19257. Up to 9496 conditions per place. [2023-08-27 01:00:34,139 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 38 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-27 01:00:34,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 189 flow [2023-08-27 01:00:34,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-27 01:00:34,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-08-27 01:00:34,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-27 01:00:34,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-27 01:00:34,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:34,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-27 01:00:34,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:34,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:34,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:34,149 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 111 flow. Second operand 3 states and 496 transitions. [2023-08-27 01:00:34,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 189 flow [2023-08-27 01:00:34,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 184 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 01:00:34,151 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 108 flow [2023-08-27 01:00:34,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-08-27 01:00:34,153 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2023-08-27 01:00:34,156 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 108 flow [2023-08-27 01:00:34,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:34,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:34,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:00:34,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 01:00:34,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:34,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:34,166 INFO L85 PathProgramCache]: Analyzing trace with hash 787003, now seen corresponding path program 1 times [2023-08-27 01:00:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:34,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601589948] [2023-08-27 01:00:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:34,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:34,235 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 01:00:34,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:34,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601589948] [2023-08-27 01:00:34,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601589948] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:00:34,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249396317] [2023-08-27 01:00:34,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:34,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:34,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:00:34,241 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 01:00:34,284 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 01:00:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:34,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:00:34,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:00:34,403 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 01:00:34,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:00:34,418 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 01:00:34,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249396317] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:00:34,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:00:34,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:00:34,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418646415] [2023-08-27 01:00:34,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:00:34,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:00:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:00:34,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:00:34,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 352 [2023-08-27 01:00:34,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:34,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:34,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 352 [2023-08-27 01:00:34,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:35,166 INFO L124 PetriNetUnfolderBase]: 7438/9517 cut-off events. [2023-08-27 01:00:35,166 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 01:00:35,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19302 conditions, 9517 events. 7438/9517 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 44031 event pairs, 5195 based on Foata normal form. 0/4492 useless extension candidates. Maximal degree in co-relation 19257. Up to 9502 conditions per place. [2023-08-27 01:00:35,216 INFO L140 encePairwiseOnDemand]: 348/352 looper letters, 38 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2023-08-27 01:00:35,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 232 flow [2023-08-27 01:00:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:00:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:00:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 962 transitions. [2023-08-27 01:00:35,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45549242424242425 [2023-08-27 01:00:35,219 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 962 transitions. [2023-08-27 01:00:35,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 962 transitions. [2023-08-27 01:00:35,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:35,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 962 transitions. [2023-08-27 01:00:35,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:35,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:35,226 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:35,226 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 108 flow. Second operand 6 states and 962 transitions. [2023-08-27 01:00:35,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 232 flow [2023-08-27 01:00:35,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:00:35,228 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 163 flow [2023-08-27 01:00:35,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-27 01:00:35,229 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2023-08-27 01:00:35,229 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 163 flow [2023-08-27 01:00:35,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:35,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:35,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:00:35,240 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 01:00:35,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:35,436 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:35,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1972193309, now seen corresponding path program 1 times [2023-08-27 01:00:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:35,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698564192] [2023-08-27 01:00:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:35,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:35,534 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 01:00:35,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:35,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698564192] [2023-08-27 01:00:35,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698564192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:35,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:00:35,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:00:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131974981] [2023-08-27 01:00:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:35,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:35,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:35,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:00:35,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-08-27 01:00:35,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:35,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:35,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-08-27 01:00:35,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:36,500 INFO L124 PetriNetUnfolderBase]: 8858/11239 cut-off events. [2023-08-27 01:00:36,500 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 01:00:36,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22806 conditions, 11239 events. 8858/11239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 52933 event pairs, 5195 based on Foata normal form. 0/5305 useless extension candidates. Maximal degree in co-relation 22770. Up to 9810 conditions per place. [2023-08-27 01:00:36,559 INFO L140 encePairwiseOnDemand]: 347/352 looper letters, 66 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-27 01:00:36,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 348 flow [2023-08-27 01:00:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-27 01:00:36,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4971590909090909 [2023-08-27 01:00:36,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-27 01:00:36,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-27 01:00:36,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:36,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-27 01:00:36,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:36,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:36,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:36,565 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 163 flow. Second operand 3 states and 525 transitions. [2023-08-27 01:00:36,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 348 flow [2023-08-27 01:00:36,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 327 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 01:00:36,569 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 163 flow [2023-08-27 01:00:36,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-08-27 01:00:36,570 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-08-27 01:00:36,571 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 163 flow [2023-08-27 01:00:36,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:36,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:36,571 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 01:00:36,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 01:00:36,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:36,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1971483860, now seen corresponding path program 2 times [2023-08-27 01:00:36,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:36,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938158321] [2023-08-27 01:00:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:36,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:36,711 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 01:00:36,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:36,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938158321] [2023-08-27 01:00:36,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938158321] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:00:36,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404781239] [2023-08-27 01:00:36,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:00:36,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:36,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:00:36,713 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 01:00:36,739 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 01:00:36,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:00:36,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:00:36,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:00:36,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:00:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 01:00:36,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:00:36,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404781239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:36,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:00:36,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 01:00:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757579847] [2023-08-27 01:00:36,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:36,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:36,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:36,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:00:36,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 352 [2023-08-27 01:00:36,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:36,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:36,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 352 [2023-08-27 01:00:36,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:37,684 INFO L124 PetriNetUnfolderBase]: 8842/11222 cut-off events. [2023-08-27 01:00:37,685 INFO L125 PetriNetUnfolderBase]: For 1500/1500 co-relation queries the response was YES. [2023-08-27 01:00:37,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25458 conditions, 11222 events. 8842/11222 cut-off events. For 1500/1500 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 51685 event pairs, 6017 based on Foata normal form. 1/5299 useless extension candidates. Maximal degree in co-relation 25431. Up to 11208 conditions per place. [2023-08-27 01:00:37,745 INFO L140 encePairwiseOnDemand]: 350/352 looper letters, 47 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-08-27 01:00:37,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 249 flow [2023-08-27 01:00:37,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-27 01:00:37,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2023-08-27 01:00:37,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-27 01:00:37,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-27 01:00:37,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:37,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-27 01:00:37,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:37,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:37,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:37,751 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 163 flow. Second operand 3 states and 498 transitions. [2023-08-27 01:00:37,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 249 flow [2023-08-27 01:00:37,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 228 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 01:00:37,753 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 134 flow [2023-08-27 01:00:37,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-08-27 01:00:37,754 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2023-08-27 01:00:37,754 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 134 flow [2023-08-27 01:00:37,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:37,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:37,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:37,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 01:00:37,962 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 01:00:37,963 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:37,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:37,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1008451137, now seen corresponding path program 1 times [2023-08-27 01:00:37,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:37,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969978092] [2023-08-27 01:00:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:37,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:38,008 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 01:00:38,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:38,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969978092] [2023-08-27 01:00:38,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969978092] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:00:38,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254516465] [2023-08-27 01:00:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:38,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:38,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:00:38,011 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 01:00:38,013 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 01:00:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:38,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 01:00:38,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:00:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:00:38,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:00:38,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254516465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:38,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:00:38,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-27 01:00:38,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758316328] [2023-08-27 01:00:38,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:38,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:38,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:38,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:00:38,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 352 [2023-08-27 01:00:38,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:38,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:38,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 352 [2023-08-27 01:00:38,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:38,898 INFO L124 PetriNetUnfolderBase]: 8841/11221 cut-off events. [2023-08-27 01:00:38,898 INFO L125 PetriNetUnfolderBase]: For 894/894 co-relation queries the response was YES. [2023-08-27 01:00:38,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24542 conditions, 11221 events. 8841/11221 cut-off events. For 894/894 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 51750 event pairs, 6017 based on Foata normal form. 1/5598 useless extension candidates. Maximal degree in co-relation 24533. Up to 11207 conditions per place. [2023-08-27 01:00:38,953 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 45 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-27 01:00:38,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 224 flow [2023-08-27 01:00:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:38,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-08-27 01:00:38,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-27 01:00:38,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-08-27 01:00:38,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-08-27 01:00:38,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:38,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-08-27 01:00:38,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:38,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:38,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:38,959 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 134 flow. Second operand 3 states and 484 transitions. [2023-08-27 01:00:38,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 224 flow [2023-08-27 01:00:38,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:00:38,962 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 133 flow [2023-08-27 01:00:38,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-08-27 01:00:38,963 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2023-08-27 01:00:38,963 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 133 flow [2023-08-27 01:00:38,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:38,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:38,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:38,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 01:00:39,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:39,169 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:39,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:39,170 INFO L85 PathProgramCache]: Analyzing trace with hash 537427834, now seen corresponding path program 1 times [2023-08-27 01:00:39,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:39,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797838588] [2023-08-27 01:00:39,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:39,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:00:39,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797838588] [2023-08-27 01:00:39,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797838588] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:00:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368548859] [2023-08-27 01:00:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:39,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:39,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:00:39,225 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 01:00:39,247 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 01:00:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:39,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:00:39,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:00:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:00:39,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:00:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:00:39,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368548859] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:00:39,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:00:39,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-27 01:00:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125815270] [2023-08-27 01:00:39,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:00:39,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:00:39,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:39,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:00:39,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:00:39,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:00:39,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 133 flow. Second operand has 13 states, 13 states have (on average 135.69230769230768) internal successors, (1764), 13 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:39,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:39,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:00:39,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:40,943 INFO L124 PetriNetUnfolderBase]: 15215/19308 cut-off events. [2023-08-27 01:00:40,943 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2023-08-27 01:00:40,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42472 conditions, 19308 events. 15215/19308 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 95860 event pairs, 6410 based on Foata normal form. 0/10101 useless extension candidates. Maximal degree in co-relation 42462. Up to 8127 conditions per place. [2023-08-27 01:00:41,027 INFO L140 encePairwiseOnDemand]: 342/352 looper letters, 144 selfloop transitions, 14 changer transitions 0/159 dead transitions. [2023-08-27 01:00:41,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 159 transitions, 703 flow [2023-08-27 01:00:41,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:00:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:00:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1370 transitions. [2023-08-27 01:00:41,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432449494949495 [2023-08-27 01:00:41,032 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1370 transitions. [2023-08-27 01:00:41,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1370 transitions. [2023-08-27 01:00:41,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:41,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1370 transitions. [2023-08-27 01:00:41,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.22222222222223) internal successors, (1370), 9 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:41,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:41,041 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:41,041 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 133 flow. Second operand 9 states and 1370 transitions. [2023-08-27 01:00:41,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 159 transitions, 703 flow [2023-08-27 01:00:41,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 159 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:00:41,047 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 229 flow [2023-08-27 01:00:41,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=229, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-08-27 01:00:41,048 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2023-08-27 01:00:41,048 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 229 flow [2023-08-27 01:00:41,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 135.69230769230768) internal successors, (1764), 13 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:41,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:41,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:41,060 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 01:00:41,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:41,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:41,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:41,257 INFO L85 PathProgramCache]: Analyzing trace with hash -342827932, now seen corresponding path program 1 times [2023-08-27 01:00:41,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:41,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810501496] [2023-08-27 01:00:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:41,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:00:41,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:41,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810501496] [2023-08-27 01:00:41,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810501496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:41,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:00:41,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:00:41,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221685616] [2023-08-27 01:00:41,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:41,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:41,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:41,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:00:41,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-08-27 01:00:41,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:41,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:41,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-08-27 01:00:41,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:42,753 INFO L124 PetriNetUnfolderBase]: 18527/23310 cut-off events. [2023-08-27 01:00:42,753 INFO L125 PetriNetUnfolderBase]: For 27998/27998 co-relation queries the response was YES. [2023-08-27 01:00:42,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63403 conditions, 23310 events. 18527/23310 cut-off events. For 27998/27998 co-relation queries the response was YES. Maximal size of possible extension queue 1088. Compared 112937 event pairs, 10094 based on Foata normal form. 436/15423 useless extension candidates. Maximal degree in co-relation 63388. Up to 19973 conditions per place. [2023-08-27 01:00:42,892 INFO L140 encePairwiseOnDemand]: 347/352 looper letters, 82 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2023-08-27 01:00:42,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 545 flow [2023-08-27 01:00:42,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:42,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-08-27 01:00:42,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2023-08-27 01:00:42,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-08-27 01:00:42,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-08-27 01:00:42,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:42,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-08-27 01:00:42,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:42,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:42,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:42,899 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 229 flow. Second operand 3 states and 524 transitions. [2023-08-27 01:00:42,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 545 flow [2023-08-27 01:00:42,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 524 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 01:00:42,919 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 237 flow [2023-08-27 01:00:42,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-27 01:00:42,919 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2023-08-27 01:00:42,919 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 237 flow [2023-08-27 01:00:42,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:42,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:42,920 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:42,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 01:00:42,920 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:42,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:42,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2093533535, now seen corresponding path program 1 times [2023-08-27 01:00:42,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:42,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985770176] [2023-08-27 01:00:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:42,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:42,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 01:00:42,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:42,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985770176] [2023-08-27 01:00:42,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985770176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:42,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:00:42,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:00:42,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360747952] [2023-08-27 01:00:42,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:42,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:42,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:42,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:00:42,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-08-27 01:00:42,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:42,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:42,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-08-27 01:00:42,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:44,610 INFO L124 PetriNetUnfolderBase]: 16851/21282 cut-off events. [2023-08-27 01:00:44,611 INFO L125 PetriNetUnfolderBase]: For 15819/15824 co-relation queries the response was YES. [2023-08-27 01:00:44,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61369 conditions, 21282 events. 16851/21282 cut-off events. For 15819/15824 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 107025 event pairs, 5754 based on Foata normal form. 708/14220 useless extension candidates. Maximal degree in co-relation 61353. Up to 11667 conditions per place. [2023-08-27 01:00:44,720 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 69 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2023-08-27 01:00:44,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 77 transitions, 449 flow [2023-08-27 01:00:44,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-27 01:00:44,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2023-08-27 01:00:44,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-27 01:00:44,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-27 01:00:44,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:44,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-27 01:00:44,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:44,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:44,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:44,726 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 237 flow. Second operand 3 states and 520 transitions. [2023-08-27 01:00:44,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 77 transitions, 449 flow [2023-08-27 01:00:44,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 429 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 01:00:44,820 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 220 flow [2023-08-27 01:00:44,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-27 01:00:44,821 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2023-08-27 01:00:44,821 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 220 flow [2023-08-27 01:00:44,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:44,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:44,822 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:44,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 01:00:44,822 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:44,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2093533565, now seen corresponding path program 2 times [2023-08-27 01:00:44,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:44,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160034954] [2023-08-27 01:00:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:44,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:00:44,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:44,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160034954] [2023-08-27 01:00:44,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160034954] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:00:44,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897665707] [2023-08-27 01:00:44,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:00:44,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:44,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:00:44,885 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 01:00:44,893 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 01:00:44,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:00:44,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:00:44,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:00:44,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:00:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 01:00:44,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:00:44,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897665707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:44,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:00:44,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 01:00:44,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480698968] [2023-08-27 01:00:44,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:44,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:44,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:44,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:44,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 01:00:44,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 352 [2023-08-27 01:00:44,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:44,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:44,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 352 [2023-08-27 01:00:44,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:46,073 INFO L124 PetriNetUnfolderBase]: 12377/15614 cut-off events. [2023-08-27 01:00:46,074 INFO L125 PetriNetUnfolderBase]: For 21059/21059 co-relation queries the response was YES. [2023-08-27 01:00:46,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41319 conditions, 15614 events. 12377/15614 cut-off events. For 21059/21059 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 71075 event pairs, 7918 based on Foata normal form. 931/11062 useless extension candidates. Maximal degree in co-relation 41304. Up to 15598 conditions per place. [2023-08-27 01:00:46,131 INFO L140 encePairwiseOnDemand]: 348/352 looper letters, 50 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-27 01:00:46,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 296 flow [2023-08-27 01:00:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:46,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-27 01:00:46,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46117424242424243 [2023-08-27 01:00:46,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-27 01:00:46,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-27 01:00:46,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:46,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-27 01:00:46,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:46,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:46,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:46,138 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 220 flow. Second operand 3 states and 487 transitions. [2023-08-27 01:00:46,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 296 flow [2023-08-27 01:00:46,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 273 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 01:00:46,150 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 173 flow [2023-08-27 01:00:46,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-08-27 01:00:46,150 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-08-27 01:00:46,150 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 173 flow [2023-08-27 01:00:46,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:46,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:46,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:46,156 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 01:00:46,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 01:00:46,354 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:46,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:46,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2031996116, now seen corresponding path program 1 times [2023-08-27 01:00:46,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:46,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615579365] [2023-08-27 01:00:46,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:46,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:46,819 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 01:00:46,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:46,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615579365] [2023-08-27 01:00:46,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615579365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:00:46,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677176472] [2023-08-27 01:00:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:46,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:46,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:00:46,821 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 01:00:46,842 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 01:00:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:46,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 01:00:46,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:00:46,982 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:00:47,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:00:47,027 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:00:47,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:00:47,065 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:00:47,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:00:47,101 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:00:47,113 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 01:00:47,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:00:47,158 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_433 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_433) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2023-08-27 01:00:47,221 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_432 (Array Int Int)) (v_ArrVal_431 (Array Int Int)) (v_ArrVal_433 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_431) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_433) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483649)) is different from false [2023-08-27 01:00:47,232 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:00:47,233 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-08-27 01:00:47,242 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:00:47,242 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 119 [2023-08-27 01:00:47,261 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 104 [2023-08-27 01:00:47,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 96 [2023-08-27 01:00:47,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2023-08-27 01:00:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 01:00:47,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677176472] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:00:47,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:00:47,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-27 01:00:47,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161785209] [2023-08-27 01:00:47,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:00:47,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 01:00:47,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 01:00:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=187, Unknown=5, NotChecked=58, Total=306 [2023-08-27 01:00:47,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:00:47,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 173 flow. Second operand has 18 states, 18 states have (on average 123.5) internal successors, (2223), 18 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:47,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:47,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:00:47,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:48,934 INFO L124 PetriNetUnfolderBase]: 12217/16066 cut-off events. [2023-08-27 01:00:48,935 INFO L125 PetriNetUnfolderBase]: For 7998/7998 co-relation queries the response was YES. [2023-08-27 01:00:48,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41172 conditions, 16066 events. 12217/16066 cut-off events. For 7998/7998 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 72104 event pairs, 2036 based on Foata normal form. 0/11955 useless extension candidates. Maximal degree in co-relation 41158. Up to 11790 conditions per place. [2023-08-27 01:00:49,010 INFO L140 encePairwiseOnDemand]: 343/352 looper letters, 131 selfloop transitions, 14 changer transitions 0/145 dead transitions. [2023-08-27 01:00:49,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 145 transitions, 824 flow [2023-08-27 01:00:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:00:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:00:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1067 transitions. [2023-08-27 01:00:49,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2023-08-27 01:00:49,013 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1067 transitions. [2023-08-27 01:00:49,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1067 transitions. [2023-08-27 01:00:49,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:49,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1067 transitions. [2023-08-27 01:00:49,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.375) internal successors, (1067), 8 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:49,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:49,021 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:49,021 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 173 flow. Second operand 8 states and 1067 transitions. [2023-08-27 01:00:49,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 145 transitions, 824 flow [2023-08-27 01:00:49,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 145 transitions, 823 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:00:49,034 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 233 flow [2023-08-27 01:00:49,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=233, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-27 01:00:49,035 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2023-08-27 01:00:49,035 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 233 flow [2023-08-27 01:00:49,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 123.5) internal successors, (2223), 18 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:49,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:49,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:49,044 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 01:00:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:49,241 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:49,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:49,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2037729565, now seen corresponding path program 1 times [2023-08-27 01:00:49,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:49,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585125947] [2023-08-27 01:00:49,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:49,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:00:49,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:49,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585125947] [2023-08-27 01:00:49,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585125947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:49,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:00:49,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:00:49,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738301467] [2023-08-27 01:00:49,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:49,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:49,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:49,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:49,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:00:49,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-08-27 01:00:49,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:49,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:49,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-08-27 01:00:49,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:50,211 INFO L124 PetriNetUnfolderBase]: 11390/14578 cut-off events. [2023-08-27 01:00:50,211 INFO L125 PetriNetUnfolderBase]: For 7719/7777 co-relation queries the response was YES. [2023-08-27 01:00:50,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41060 conditions, 14578 events. 11390/14578 cut-off events. For 7719/7777 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 67641 event pairs, 3715 based on Foata normal form. 58/11214 useless extension candidates. Maximal degree in co-relation 41043. Up to 8410 conditions per place. [2023-08-27 01:00:50,286 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 82 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-08-27 01:00:50,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 522 flow [2023-08-27 01:00:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:50,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-08-27 01:00:50,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48579545454545453 [2023-08-27 01:00:50,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-08-27 01:00:50,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-08-27 01:00:50,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:50,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-08-27 01:00:50,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:50,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:50,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:50,291 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 233 flow. Second operand 3 states and 513 transitions. [2023-08-27 01:00:50,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 522 flow [2023-08-27 01:00:50,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 516 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 01:00:50,309 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 231 flow [2023-08-27 01:00:50,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-27 01:00:50,310 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2023-08-27 01:00:50,310 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 231 flow [2023-08-27 01:00:50,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:50,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:50,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:50,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 01:00:50,311 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:50,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:50,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1432788061, now seen corresponding path program 1 times [2023-08-27 01:00:50,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:50,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222073446] [2023-08-27 01:00:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:50,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:00:50,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:50,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222073446] [2023-08-27 01:00:50,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222073446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:50,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:00:50,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:00:50,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103156076] [2023-08-27 01:00:50,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:50,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:50,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:50,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:50,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:00:50,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 352 [2023-08-27 01:00:50,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:50,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:50,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 352 [2023-08-27 01:00:50,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:51,249 INFO L124 PetriNetUnfolderBase]: 10883/13907 cut-off events. [2023-08-27 01:00:51,249 INFO L125 PetriNetUnfolderBase]: For 11204/11280 co-relation queries the response was YES. [2023-08-27 01:00:51,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41189 conditions, 13907 events. 10883/13907 cut-off events. For 11204/11280 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 62700 event pairs, 2069 based on Foata normal form. 76/11492 useless extension candidates. Maximal degree in co-relation 41172. Up to 12346 conditions per place. [2023-08-27 01:00:51,316 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 82 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-27 01:00:51,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 518 flow [2023-08-27 01:00:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:51,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-08-27 01:00:51,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990530303030303 [2023-08-27 01:00:51,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-08-27 01:00:51,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-08-27 01:00:51,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:51,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-08-27 01:00:51,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:51,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:51,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:51,321 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 231 flow. Second operand 3 states and 527 transitions. [2023-08-27 01:00:51,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 518 flow [2023-08-27 01:00:51,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:00:51,360 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 233 flow [2023-08-27 01:00:51,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2023-08-27 01:00:51,360 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-08-27 01:00:51,361 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 233 flow [2023-08-27 01:00:51,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:51,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:51,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:51,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 01:00:51,361 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:51,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:51,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1461778512, now seen corresponding path program 1 times [2023-08-27 01:00:51,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131514226] [2023-08-27 01:00:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:00:51,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131514226] [2023-08-27 01:00:51,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131514226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:51,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:00:51,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:00:51,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030266047] [2023-08-27 01:00:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:51,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:51,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:51,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:00:51,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-08-27 01:00:51,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:51,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:51,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-08-27 01:00:51,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:52,458 INFO L124 PetriNetUnfolderBase]: 13120/17053 cut-off events. [2023-08-27 01:00:52,458 INFO L125 PetriNetUnfolderBase]: For 11507/11507 co-relation queries the response was YES. [2023-08-27 01:00:52,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50006 conditions, 17053 events. 13120/17053 cut-off events. For 11507/11507 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 74256 event pairs, 6023 based on Foata normal form. 431/14850 useless extension candidates. Maximal degree in co-relation 49987. Up to 13039 conditions per place. [2023-08-27 01:00:52,574 INFO L140 encePairwiseOnDemand]: 348/352 looper letters, 80 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2023-08-27 01:00:52,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 518 flow [2023-08-27 01:00:52,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-27 01:00:52,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2023-08-27 01:00:52,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-27 01:00:52,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-27 01:00:52,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:52,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-27 01:00:52,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:52,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:52,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:52,580 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 233 flow. Second operand 3 states and 517 transitions. [2023-08-27 01:00:52,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 518 flow [2023-08-27 01:00:52,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:00:52,610 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 261 flow [2023-08-27 01:00:52,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-08-27 01:00:52,611 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2023-08-27 01:00:52,611 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 261 flow [2023-08-27 01:00:52,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:52,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:52,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:52,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 01:00:52,612 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:52,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1432787415, now seen corresponding path program 1 times [2023-08-27 01:00:52,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:52,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398682870] [2023-08-27 01:00:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:52,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:53,047 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 01:00:53,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:53,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398682870] [2023-08-27 01:00:53,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398682870] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:00:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969891962] [2023-08-27 01:00:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:53,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:53,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:00:53,049 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 01:00:53,075 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 01:00:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:53,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:00:53,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:00:53,212 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:00:53,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:00:53,261 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:00:53,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:00:53,302 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:00:53,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:00:53,335 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:00:53,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:00:53,363 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:00:53,371 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 01:00:53,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:00:53,399 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_587 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_587) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2023-08-27 01:00:53,484 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_584 (Array Int Int)) (v_ArrVal_586 (Array Int Int)) (v_ArrVal_585 (Array Int Int)) (v_ArrVal_587 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_584) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_585) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_586) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_587) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483649)) is different from false [2023-08-27 01:00:53,496 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:00:53,496 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-08-27 01:00:53,507 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:00:53,508 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 485 treesize of output 477 [2023-08-27 01:00:53,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 228 treesize of output 212 [2023-08-27 01:00:53,534 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 103 [2023-08-27 01:00:53,544 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 202 [2023-08-27 01:00:53,554 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 98 [2023-08-27 01:00:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 01:00:53,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969891962] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:00:53,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:00:53,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-27 01:00:53,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128933618] [2023-08-27 01:00:53,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:00:53,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 01:00:53,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 01:00:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=267, Unknown=6, NotChecked=70, Total=420 [2023-08-27 01:00:53,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:00:53,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 261 flow. Second operand has 21 states, 21 states have (on average 120.47619047619048) internal successors, (2530), 21 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:53,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:53,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:00:53,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:54,997 INFO L124 PetriNetUnfolderBase]: 11664/15166 cut-off events. [2023-08-27 01:00:54,997 INFO L125 PetriNetUnfolderBase]: For 15959/15959 co-relation queries the response was YES. [2023-08-27 01:00:55,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47866 conditions, 15166 events. 11664/15166 cut-off events. For 15959/15959 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 64148 event pairs, 4304 based on Foata normal form. 431/13969 useless extension candidates. Maximal degree in co-relation 47847. Up to 9448 conditions per place. [2023-08-27 01:00:55,104 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 97 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2023-08-27 01:00:55,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 111 transitions, 681 flow [2023-08-27 01:00:55,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:00:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:00:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 905 transitions. [2023-08-27 01:00:55,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367288961038961 [2023-08-27 01:00:55,107 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 905 transitions. [2023-08-27 01:00:55,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 905 transitions. [2023-08-27 01:00:55,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:55,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 905 transitions. [2023-08-27 01:00:55,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.28571428571428) internal successors, (905), 7 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:55,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:55,114 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:55,114 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 261 flow. Second operand 7 states and 905 transitions. [2023-08-27 01:00:55,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 111 transitions, 681 flow [2023-08-27 01:00:55,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 111 transitions, 673 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 01:00:55,144 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 289 flow [2023-08-27 01:00:55,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2023-08-27 01:00:55,145 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2023-08-27 01:00:55,145 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 289 flow [2023-08-27 01:00:55,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 120.47619047619048) internal successors, (2530), 21 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:55,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:55,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:55,153 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 01:00:55,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:55,352 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:55,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:55,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1432633497, now seen corresponding path program 1 times [2023-08-27 01:00:55,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:55,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840465338] [2023-08-27 01:00:55,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:55,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:00:55,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:55,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840465338] [2023-08-27 01:00:55,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840465338] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:00:55,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575112912] [2023-08-27 01:00:55,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:55,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:55,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:00:55,415 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 01:00:55,436 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 01:00:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:55,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:00:55,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:00:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:00:55,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:00:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:00:55,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575112912] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:00:55,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:00:55,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-27 01:00:55,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347727289] [2023-08-27 01:00:55,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:00:55,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:00:55,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:55,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:00:55,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:00:55,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:00:55,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 289 flow. Second operand has 13 states, 13 states have (on average 136.15384615384616) internal successors, (1770), 13 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:55,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:55,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:00:55,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:56,992 INFO L124 PetriNetUnfolderBase]: 9695/12706 cut-off events. [2023-08-27 01:00:56,992 INFO L125 PetriNetUnfolderBase]: For 16990/16990 co-relation queries the response was YES. [2023-08-27 01:00:57,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42017 conditions, 12706 events. 9695/12706 cut-off events. For 16990/16990 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 53867 event pairs, 2747 based on Foata normal form. 782/12552 useless extension candidates. Maximal degree in co-relation 41996. Up to 3350 conditions per place. [2023-08-27 01:00:57,112 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 162 selfloop transitions, 18 changer transitions 0/180 dead transitions. [2023-08-27 01:00:57,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 180 transitions, 1101 flow [2023-08-27 01:00:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:00:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:00:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1346 transitions. [2023-08-27 01:00:57,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42487373737373735 [2023-08-27 01:00:57,115 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1346 transitions. [2023-08-27 01:00:57,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1346 transitions. [2023-08-27 01:00:57,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:57,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1346 transitions. [2023-08-27 01:00:57,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 149.55555555555554) internal successors, (1346), 9 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:57,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:57,120 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:57,121 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 289 flow. Second operand 9 states and 1346 transitions. [2023-08-27 01:00:57,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 180 transitions, 1101 flow [2023-08-27 01:00:57,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 180 transitions, 1058 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 01:00:57,153 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 336 flow [2023-08-27 01:00:57,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=336, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-27 01:00:57,154 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2023-08-27 01:00:57,154 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 336 flow [2023-08-27 01:00:57,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 136.15384615384616) internal successors, (1770), 13 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:57,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:57,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:57,164 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 01:00:57,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 01:00:57,364 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:57,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:57,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1422119249, now seen corresponding path program 1 times [2023-08-27 01:00:57,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:57,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600997763] [2023-08-27 01:00:57,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:57,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:00:57,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:57,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600997763] [2023-08-27 01:00:57,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600997763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:00:57,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:00:57,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:00:57,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313661088] [2023-08-27 01:00:57,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:00:57,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:00:57,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:57,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:00:57,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:00:57,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 352 [2023-08-27 01:00:57,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:57,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:57,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 352 [2023-08-27 01:00:57,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:00:58,330 INFO L124 PetriNetUnfolderBase]: 8934/11709 cut-off events. [2023-08-27 01:00:58,330 INFO L125 PetriNetUnfolderBase]: For 21164/21868 co-relation queries the response was YES. [2023-08-27 01:00:58,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40218 conditions, 11709 events. 8934/11709 cut-off events. For 21164/21868 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 53015 event pairs, 1434 based on Foata normal form. 856/11983 useless extension candidates. Maximal degree in co-relation 40197. Up to 9537 conditions per place. [2023-08-27 01:00:58,405 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 83 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2023-08-27 01:00:58,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 90 transitions, 661 flow [2023-08-27 01:00:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:00:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:00:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-08-27 01:00:58,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943181818181818 [2023-08-27 01:00:58,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-08-27 01:00:58,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-08-27 01:00:58,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:00:58,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-08-27 01:00:58,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:58,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:58,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:58,410 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 336 flow. Second operand 3 states and 522 transitions. [2023-08-27 01:00:58,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 90 transitions, 661 flow [2023-08-27 01:00:58,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 628 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 01:00:58,450 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 326 flow [2023-08-27 01:00:58,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-27 01:00:58,450 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2023-08-27 01:00:58,450 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 326 flow [2023-08-27 01:00:58,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:58,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:00:58,451 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:00:58,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 01:00:58,451 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:00:58,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:00:58,452 INFO L85 PathProgramCache]: Analyzing trace with hash 103529751, now seen corresponding path program 1 times [2023-08-27 01:00:58,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:00:58,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032588978] [2023-08-27 01:00:58,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:58,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:00:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:58,930 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 01:00:58,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:00:58,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032588978] [2023-08-27 01:00:58,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032588978] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:00:58,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144998901] [2023-08-27 01:00:58,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:00:58,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:00:58,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:00:58,932 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 01:00:58,935 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 01:00:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:00:59,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 01:00:59,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:00:59,127 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:00:59,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:00:59,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:00:59,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:00:59,204 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:00:59,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:00:59,233 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:00:59,251 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:00:59,262 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 01:00:59,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:00:59,309 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_750 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_750) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2023-08-27 01:00:59,354 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_748 (Array Int Int)) (v_ArrVal_749 (Array Int Int)) (v_ArrVal_750 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_748) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_749) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_750) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649)) is different from false [2023-08-27 01:00:59,364 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:00:59,365 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 01:00:59,374 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:00:59,375 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 553 treesize of output 529 [2023-08-27 01:00:59,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-27 01:00:59,393 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 102 [2023-08-27 01:00:59,400 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 01:00:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-27 01:00:59,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144998901] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:00:59,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:00:59,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-08-27 01:00:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059487190] [2023-08-27 01:00:59,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:00:59,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 01:00:59,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:00:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 01:00:59,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=8, NotChecked=78, Total=506 [2023-08-27 01:00:59,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:00:59,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 326 flow. Second operand has 23 states, 23 states have (on average 123.3913043478261) internal successors, (2838), 23 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:00:59,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:00:59,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:00:59,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:01:00,843 INFO L124 PetriNetUnfolderBase]: 9253/12144 cut-off events. [2023-08-27 01:01:00,844 INFO L125 PetriNetUnfolderBase]: For 18960/18960 co-relation queries the response was YES. [2023-08-27 01:01:00,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41661 conditions, 12144 events. 9253/12144 cut-off events. For 18960/18960 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 50220 event pairs, 5389 based on Foata normal form. 35/11609 useless extension candidates. Maximal degree in co-relation 41638. Up to 11017 conditions per place. [2023-08-27 01:01:00,895 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 103 selfloop transitions, 15 changer transitions 0/118 dead transitions. [2023-08-27 01:01:00,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 813 flow [2023-08-27 01:01:00,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:01:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:01:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1053 transitions. [2023-08-27 01:01:00,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3739346590909091 [2023-08-27 01:01:00,898 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1053 transitions. [2023-08-27 01:01:00,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1053 transitions. [2023-08-27 01:01:00,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:01:00,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1053 transitions. [2023-08-27 01:01:00,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.625) internal successors, (1053), 8 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:00,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:00,902 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:00,902 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 326 flow. Second operand 8 states and 1053 transitions. [2023-08-27 01:01:00,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 813 flow [2023-08-27 01:01:00,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 801 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:01:00,932 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 396 flow [2023-08-27 01:01:00,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=396, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2023-08-27 01:01:00,932 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2023-08-27 01:01:00,932 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 396 flow [2023-08-27 01:01:00,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 123.3913043478261) internal successors, (2838), 23 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:00,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:01:00,933 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:01:00,938 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 01:01:01,138 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 01:01:01,138 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:01:01,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:01:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1080768134, now seen corresponding path program 1 times [2023-08-27 01:01:01,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:01:01,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845780244] [2023-08-27 01:01:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:01:01,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:01:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:01:01,639 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 01:01:01,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:01:01,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845780244] [2023-08-27 01:01:01,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845780244] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:01:01,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884458033] [2023-08-27 01:01:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:01:01,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:01:01,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:01:01,641 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 01:01:01,644 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 01:01:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:01:01,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-27 01:01:01,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:01:01,847 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:01:01,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:01,892 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:01:01,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:01,935 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:01:01,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:01,973 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:01:02,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:02,005 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:01:02,018 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:01:02,035 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 01:01:02,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:01:02,112 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_825 (Array Int Int)) (v_ArrVal_826 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_825) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_826) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2023-08-27 01:01:02,121 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_825 (Array Int Int)) (v_ArrVal_824 (Array Int Int)) (v_ArrVal_826 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_824) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_825) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_826) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483649)) is different from false [2023-08-27 01:01:02,171 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:01:02,171 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-27 01:01:02,180 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:01:02,181 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1097 treesize of output 1073 [2023-08-27 01:01:02,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 250 [2023-08-27 01:01:02,201 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2023-08-27 01:01:02,207 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 202 [2023-08-27 01:01:02,216 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 98 [2023-08-27 01:01:02,428 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 01:01:02,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884458033] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:01:02,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:01:02,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-27 01:01:02,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691711155] [2023-08-27 01:01:02,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:01:02,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 01:01:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:01:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 01:01:02,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=505, Unknown=3, NotChecked=94, Total=702 [2023-08-27 01:01:02,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:01:02,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 396 flow. Second operand has 27 states, 27 states have (on average 120.4074074074074) internal successors, (3251), 27 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:02,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:01:02,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:01:02,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:01:03,754 INFO L124 PetriNetUnfolderBase]: 10563/13812 cut-off events. [2023-08-27 01:01:03,755 INFO L125 PetriNetUnfolderBase]: For 26558/26558 co-relation queries the response was YES. [2023-08-27 01:01:03,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49569 conditions, 13812 events. 10563/13812 cut-off events. For 26558/26558 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 58290 event pairs, 4804 based on Foata normal form. 283/13455 useless extension candidates. Maximal degree in co-relation 49544. Up to 7424 conditions per place. [2023-08-27 01:01:03,847 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 121 selfloop transitions, 17 changer transitions 0/138 dead transitions. [2023-08-27 01:01:03,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 138 transitions, 927 flow [2023-08-27 01:01:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:01:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:01:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1056 transitions. [2023-08-27 01:01:03,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-08-27 01:01:03,850 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1056 transitions. [2023-08-27 01:01:03,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1056 transitions. [2023-08-27 01:01:03,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:01:03,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1056 transitions. [2023-08-27 01:01:03,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:03,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:03,855 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:03,855 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 396 flow. Second operand 8 states and 1056 transitions. [2023-08-27 01:01:03,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 138 transitions, 927 flow [2023-08-27 01:01:03,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 138 transitions, 905 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 01:01:03,911 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 440 flow [2023-08-27 01:01:03,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=440, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2023-08-27 01:01:03,911 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2023-08-27 01:01:03,911 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 440 flow [2023-08-27 01:01:03,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 120.4074074074074) internal successors, (3251), 27 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:03,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:01:03,912 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:01:03,921 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 01:01:04,117 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 01:01:04,118 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:01:04,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:01:04,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1085541421, now seen corresponding path program 2 times [2023-08-27 01:01:04,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:01:04,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096783111] [2023-08-27 01:01:04,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:01:04,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:01:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:01:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:01:04,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:01:04,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096783111] [2023-08-27 01:01:04,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096783111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:01:04,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785923635] [2023-08-27 01:01:04,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:01:04,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:01:04,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:01:04,251 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 01:01:04,253 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 01:01:04,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:01:04,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:01:04,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:01:04,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:01:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:01:04,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:01:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:01:04,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785923635] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:01:04,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:01:04,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 01:01:04,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745237693] [2023-08-27 01:01:04,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:01:04,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:01:04,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:01:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:01:04,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:01:04,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:01:04,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 440 flow. Second operand has 19 states, 19 states have (on average 135.42105263157896) internal successors, (2573), 19 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:04,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:01:04,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:01:04,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:01:06,128 INFO L124 PetriNetUnfolderBase]: 16999/22273 cut-off events. [2023-08-27 01:01:06,129 INFO L125 PetriNetUnfolderBase]: For 49919/49919 co-relation queries the response was YES. [2023-08-27 01:01:06,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85238 conditions, 22273 events. 16999/22273 cut-off events. For 49919/49919 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 101079 event pairs, 7307 based on Foata normal form. 636/21871 useless extension candidates. Maximal degree in co-relation 85211. Up to 10143 conditions per place. [2023-08-27 01:01:06,320 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 167 selfloop transitions, 24 changer transitions 0/191 dead transitions. [2023-08-27 01:01:06,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 191 transitions, 1377 flow [2023-08-27 01:01:06,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:01:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:01:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1329 transitions. [2023-08-27 01:01:06,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41950757575757575 [2023-08-27 01:01:06,324 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1329 transitions. [2023-08-27 01:01:06,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1329 transitions. [2023-08-27 01:01:06,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:01:06,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1329 transitions. [2023-08-27 01:01:06,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.66666666666666) internal successors, (1329), 9 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:06,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:06,330 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:06,330 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 440 flow. Second operand 9 states and 1329 transitions. [2023-08-27 01:01:06,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 191 transitions, 1377 flow [2023-08-27 01:01:06,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 191 transitions, 1322 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-08-27 01:01:06,663 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 625 flow [2023-08-27 01:01:06,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=625, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2023-08-27 01:01:06,663 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2023-08-27 01:01:06,663 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 625 flow [2023-08-27 01:01:06,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 135.42105263157896) internal successors, (2573), 19 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:06,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:01:06,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:01:06,670 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 01:01:06,869 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 01:01:06,870 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:01:06,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:01:06,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1044611722, now seen corresponding path program 1 times [2023-08-27 01:01:06,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:01:06,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913993376] [2023-08-27 01:01:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:01:06,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:01:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:01:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:01:06,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:01:06,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913993376] [2023-08-27 01:01:06,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913993376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:01:06,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:01:06,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:01:06,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553750948] [2023-08-27 01:01:06,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:01:06,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:01:06,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:01:06,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:01:06,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:01:06,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 352 [2023-08-27 01:01:06,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 625 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:06,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:01:06,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 352 [2023-08-27 01:01:06,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:01:08,520 INFO L124 PetriNetUnfolderBase]: 15814/20609 cut-off events. [2023-08-27 01:01:08,521 INFO L125 PetriNetUnfolderBase]: For 81234/83306 co-relation queries the response was YES. [2023-08-27 01:01:08,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84458 conditions, 20609 events. 15814/20609 cut-off events. For 81234/83306 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 101152 event pairs, 3103 based on Foata normal form. 2250/21760 useless extension candidates. Maximal degree in co-relation 84427. Up to 15525 conditions per place. [2023-08-27 01:01:08,666 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 122 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-27 01:01:08,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 130 transitions, 1288 flow [2023-08-27 01:01:08,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:01:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:01:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-08-27 01:01:08,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943181818181818 [2023-08-27 01:01:08,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-08-27 01:01:08,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-08-27 01:01:08,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:01:08,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-08-27 01:01:08,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:08,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:08,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:08,670 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 625 flow. Second operand 3 states and 522 transitions. [2023-08-27 01:01:08,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 130 transitions, 1288 flow [2023-08-27 01:01:08,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 130 transitions, 1266 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-27 01:01:08,794 INFO L231 Difference]: Finished difference. Result has 88 places, 81 transitions, 617 flow [2023-08-27 01:01:08,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=617, PETRI_PLACES=88, PETRI_TRANSITIONS=81} [2023-08-27 01:01:08,795 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2023-08-27 01:01:08,795 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 81 transitions, 617 flow [2023-08-27 01:01:08,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:08,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:01:08,795 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:01:08,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 01:01:08,795 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:01:08,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:01:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1546069580, now seen corresponding path program 3 times [2023-08-27 01:01:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:01:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004042399] [2023-08-27 01:01:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:01:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:01:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:01:09,303 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 01:01:09,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:01:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004042399] [2023-08-27 01:01:09,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004042399] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:01:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505665649] [2023-08-27 01:01:09,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:01:09,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:01:09,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:01:09,305 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 01:01:09,331 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 01:01:09,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 01:01:09,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:01:09,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-27 01:01:09,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:01:09,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 01:01:09,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:09,636 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:01:09,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:09,692 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:01:09,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:09,734 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:01:09,810 INFO L322 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-08-27 01:01:09,810 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2023-08-27 01:01:09,902 INFO L322 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-08-27 01:01:09,903 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 53 [2023-08-27 01:01:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:01:09,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:01:10,474 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:01:10,474 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 47 [2023-08-27 01:01:10,480 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 263 [2023-08-27 01:01:10,485 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:01:10,486 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:01:10,488 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 214 [2023-08-27 01:01:10,493 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:01:10,494 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:01:10,496 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 134 [2023-08-27 01:01:10,502 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:01:10,502 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 01:01:10,510 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:01:10,510 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-08-27 01:01:10,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 85 [2023-08-27 01:01:10,616 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-27 01:01:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:01:10,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505665649] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:01:10,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:01:10,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2023-08-27 01:01:10,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633425093] [2023-08-27 01:01:10,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:01:10,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 01:01:10,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:01:10,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 01:01:10,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=886, Unknown=3, NotChecked=0, Total=992 [2023-08-27 01:01:10,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 352 [2023-08-27 01:01:10,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 81 transitions, 617 flow. Second operand has 32 states, 32 states have (on average 111.3125) internal successors, (3562), 32 states have internal predecessors, (3562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:10,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:01:10,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 352 [2023-08-27 01:01:10,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:01:13,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 01:01:14,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 01:01:21,398 INFO L124 PetriNetUnfolderBase]: 25935/33730 cut-off events. [2023-08-27 01:01:21,398 INFO L125 PetriNetUnfolderBase]: For 101236/101236 co-relation queries the response was YES. [2023-08-27 01:01:21,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137507 conditions, 33730 events. 25935/33730 cut-off events. For 101236/101236 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 158559 event pairs, 5498 based on Foata normal form. 444/32574 useless extension candidates. Maximal degree in co-relation 137475. Up to 11726 conditions per place. [2023-08-27 01:01:21,620 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 508 selfloop transitions, 76 changer transitions 0/584 dead transitions. [2023-08-27 01:01:21,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 584 transitions, 4255 flow [2023-08-27 01:01:21,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-27 01:01:21,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-27 01:01:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4129 transitions. [2023-08-27 01:01:21,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34500334224598933 [2023-08-27 01:01:21,624 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4129 transitions. [2023-08-27 01:01:21,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4129 transitions. [2023-08-27 01:01:21,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:01:21,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4129 transitions. [2023-08-27 01:01:21,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 121.44117647058823) internal successors, (4129), 34 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:21,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 352.0) internal successors, (12320), 35 states have internal predecessors, (12320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:21,638 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 352.0) internal successors, (12320), 35 states have internal predecessors, (12320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:21,638 INFO L175 Difference]: Start difference. First operand has 88 places, 81 transitions, 617 flow. Second operand 34 states and 4129 transitions. [2023-08-27 01:01:21,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 584 transitions, 4255 flow [2023-08-27 01:01:22,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 584 transitions, 4157 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-27 01:01:22,143 INFO L231 Difference]: Finished difference. Result has 128 places, 131 transitions, 1316 flow [2023-08-27 01:01:22,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1316, PETRI_PLACES=128, PETRI_TRANSITIONS=131} [2023-08-27 01:01:22,144 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 76 predicate places. [2023-08-27 01:01:22,144 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 131 transitions, 1316 flow [2023-08-27 01:01:22,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 111.3125) internal successors, (3562), 32 states have internal predecessors, (3562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:22,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:01:22,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:01:22,151 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 01:01:22,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 01:01:22,351 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:01:22,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:01:22,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1980450043, now seen corresponding path program 1 times [2023-08-27 01:01:22,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:01:22,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655714054] [2023-08-27 01:01:22,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:01:22,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:01:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:01:22,583 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 01:01:22,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:01:22,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655714054] [2023-08-27 01:01:22,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655714054] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:01:22,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367219968] [2023-08-27 01:01:22,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:01:22,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:01:22,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:01:22,585 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 01:01:22,588 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 01:01:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:01:22,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 01:01:22,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:01:22,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:01:22,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:22,768 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:01:22,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:22,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:01:22,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:22,830 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:01:22,853 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-08-27 01:01:22,867 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 01:01:22,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:01:22,884 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1072 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1072) c_~A~0.base) c_~A~0.offset) 2147483650))) is different from false [2023-08-27 01:01:22,936 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:01:22,936 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 01:01:22,952 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:01:22,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1075 [2023-08-27 01:01:22,966 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2023-08-27 01:01:22,975 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-08-27 01:01:22,984 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-27 01:01:23,029 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 01:01:23,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367219968] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:01:23,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:01:23,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-27 01:01:23,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193385834] [2023-08-27 01:01:23,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:01:23,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:01:23,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:01:23,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:01:23,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=245, Unknown=3, NotChecked=32, Total=342 [2023-08-27 01:01:23,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-08-27 01:01:23,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 131 transitions, 1316 flow. Second operand has 19 states, 19 states have (on average 129.10526315789474) internal successors, (2453), 19 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:23,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:01:23,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-08-27 01:01:23,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:01:27,719 INFO L124 PetriNetUnfolderBase]: 36878/48140 cut-off events. [2023-08-27 01:01:27,719 INFO L125 PetriNetUnfolderBase]: For 281464/283874 co-relation queries the response was YES. [2023-08-27 01:01:27,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212644 conditions, 48140 events. 36878/48140 cut-off events. For 281464/283874 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 252976 event pairs, 6257 based on Foata normal form. 3410/48975 useless extension candidates. Maximal degree in co-relation 212603. Up to 22630 conditions per place. [2023-08-27 01:01:28,144 INFO L140 encePairwiseOnDemand]: 346/352 looper letters, 164 selfloop transitions, 31 changer transitions 0/203 dead transitions. [2023-08-27 01:01:28,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 203 transitions, 2252 flow [2023-08-27 01:01:28,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:01:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:01:28,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 828 transitions. [2023-08-27 01:01:28,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2023-08-27 01:01:28,145 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 828 transitions. [2023-08-27 01:01:28,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 828 transitions. [2023-08-27 01:01:28,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:01:28,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 828 transitions. [2023-08-27 01:01:28,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:28,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:28,147 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:28,147 INFO L175 Difference]: Start difference. First operand has 128 places, 131 transitions, 1316 flow. Second operand 6 states and 828 transitions. [2023-08-27 01:01:28,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 203 transitions, 2252 flow [2023-08-27 01:01:29,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 203 transitions, 2050 flow, removed 64 selfloop flow, removed 7 redundant places. [2023-08-27 01:01:29,438 INFO L231 Difference]: Finished difference. Result has 127 places, 132 transitions, 1222 flow [2023-08-27 01:01:29,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1222, PETRI_PLACES=127, PETRI_TRANSITIONS=132} [2023-08-27 01:01:29,438 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 75 predicate places. [2023-08-27 01:01:29,438 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 132 transitions, 1222 flow [2023-08-27 01:01:29,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 129.10526315789474) internal successors, (2453), 19 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:29,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:01:29,439 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:01:29,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-27 01:01:29,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 01:01:29,641 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:01:29,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:01:29,641 INFO L85 PathProgramCache]: Analyzing trace with hash 683133035, now seen corresponding path program 2 times [2023-08-27 01:01:29,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:01:29,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279781805] [2023-08-27 01:01:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:01:29,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:01:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:01:30,163 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 01:01:30,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:01:30,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279781805] [2023-08-27 01:01:30,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279781805] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:01:30,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508693249] [2023-08-27 01:01:30,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:01:30,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:01:30,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:01:30,169 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 01:01:30,173 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 01:01:30,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:01:30,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:01:30,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 01:01:30,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:01:30,409 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:01:30,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:30,453 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:01:30,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:30,490 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:01:30,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:30,521 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:01:30,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:30,569 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:01:30,577 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:01:30,598 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:01:30,614 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 01:01:30,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:01:30,689 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1154 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1154) c_~A~0.base) (+ c_~A~0.offset 8)) 2147483649)) is different from false [2023-08-27 01:01:30,730 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1154 (Array Int Int)) (v_ArrVal_1153 (Array Int Int)) (v_ArrVal_1152 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1152) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1153) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1154) c_~A~0.base) (+ c_~A~0.offset 8)) 2147483649)) is different from false [2023-08-27 01:01:30,740 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1154 (Array Int Int)) (v_ArrVal_1153 (Array Int Int)) (v_ArrVal_1152 (Array Int Int)) (v_ArrVal_1151 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1151) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1152) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1153) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1154) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649)) is different from false [2023-08-27 01:01:30,749 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:01:30,749 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-27 01:01:30,760 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:01:30,761 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4385 treesize of output 4289 [2023-08-27 01:01:30,778 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 119 [2023-08-27 01:01:30,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 218 [2023-08-27 01:01:30,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 99 [2023-08-27 01:01:30,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 98 [2023-08-27 01:01:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-08-27 01:01:31,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508693249] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:01:31,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:01:31,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 32 [2023-08-27 01:01:31,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247663401] [2023-08-27 01:01:31,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:01:31,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 01:01:31,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:01:31,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 01:01:31,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=816, Unknown=18, NotChecked=180, Total=1122 [2023-08-27 01:01:31,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:01:31,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 132 transitions, 1222 flow. Second operand has 34 states, 34 states have (on average 120.32352941176471) internal successors, (4091), 34 states have internal predecessors, (4091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:31,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:01:31,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:01:31,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:01:37,124 INFO L124 PetriNetUnfolderBase]: 43848/56807 cut-off events. [2023-08-27 01:01:37,125 INFO L125 PetriNetUnfolderBase]: For 338088/338088 co-relation queries the response was YES. [2023-08-27 01:01:37,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250989 conditions, 56807 events. 43848/56807 cut-off events. For 338088/338088 co-relation queries the response was YES. Maximal size of possible extension queue 1423. Compared 286392 event pairs, 19880 based on Foata normal form. 898/54900 useless extension candidates. Maximal degree in co-relation 250946. Up to 23629 conditions per place. [2023-08-27 01:01:37,730 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 196 selfloop transitions, 41 changer transitions 0/237 dead transitions. [2023-08-27 01:01:37,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 237 transitions, 2148 flow [2023-08-27 01:01:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:01:37,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:01:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1315 transitions. [2023-08-27 01:01:37,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37357954545454547 [2023-08-27 01:01:37,732 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1315 transitions. [2023-08-27 01:01:37,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1315 transitions. [2023-08-27 01:01:37,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:01:37,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1315 transitions. [2023-08-27 01:01:37,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.5) internal successors, (1315), 10 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:37,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 352.0) internal successors, (3872), 11 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:37,736 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 352.0) internal successors, (3872), 11 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:37,736 INFO L175 Difference]: Start difference. First operand has 127 places, 132 transitions, 1222 flow. Second operand 10 states and 1315 transitions. [2023-08-27 01:01:37,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 237 transitions, 2148 flow [2023-08-27 01:01:39,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 237 transitions, 2106 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 01:01:39,212 INFO L231 Difference]: Finished difference. Result has 133 places, 136 transitions, 1352 flow [2023-08-27 01:01:39,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1352, PETRI_PLACES=133, PETRI_TRANSITIONS=136} [2023-08-27 01:01:39,212 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 81 predicate places. [2023-08-27 01:01:39,213 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 136 transitions, 1352 flow [2023-08-27 01:01:39,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 120.32352941176471) internal successors, (4091), 34 states have internal predecessors, (4091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:39,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:01:39,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:01:39,218 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 01:01:39,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:01:39,414 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:01:39,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:01:39,415 INFO L85 PathProgramCache]: Analyzing trace with hash -593020243, now seen corresponding path program 2 times [2023-08-27 01:01:39,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:01:39,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521175656] [2023-08-27 01:01:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:01:39,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:01:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:01:39,673 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 01:01:39,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:01:39,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521175656] [2023-08-27 01:01:39,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521175656] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:01:39,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273646231] [2023-08-27 01:01:39,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:01:39,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:01:39,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:01:39,677 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 01:01:39,701 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 01:01:39,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:01:39,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:01:39,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 01:01:39,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:01:39,871 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:01:39,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:39,913 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:01:39,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:39,963 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:01:40,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:40,003 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:01:40,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:40,027 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:01:40,048 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-08-27 01:01:40,052 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 01:01:40,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:01:40,082 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1224 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1224) c_~A~0.base) c_~A~0.offset) 2147483650))) is different from false [2023-08-27 01:01:40,176 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:01:40,177 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-27 01:01:40,188 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:01:40,189 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4387 treesize of output 4323 [2023-08-27 01:01:40,203 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 121 [2023-08-27 01:01:40,207 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 119 [2023-08-27 01:01:40,211 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 115 [2023-08-27 01:01:40,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 110 [2023-08-27 01:01:40,378 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 01:01:40,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273646231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:01:40,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:01:40,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 01:01:40,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4015556] [2023-08-27 01:01:40,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:01:40,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:01:40,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:01:40,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:01:40,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=332, Unknown=8, NotChecked=38, Total=462 [2023-08-27 01:01:40,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 352 [2023-08-27 01:01:40,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 136 transitions, 1352 flow. Second operand has 22 states, 22 states have (on average 125.95454545454545) internal successors, (2771), 22 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:40,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:01:40,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 352 [2023-08-27 01:01:40,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:01:45,159 INFO L124 PetriNetUnfolderBase]: 37092/48429 cut-off events. [2023-08-27 01:01:45,159 INFO L125 PetriNetUnfolderBase]: For 244023/244794 co-relation queries the response was YES. [2023-08-27 01:01:45,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222150 conditions, 48429 events. 37092/48429 cut-off events. For 244023/244794 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 247900 event pairs, 22030 based on Foata normal form. 1889/47710 useless extension candidates. Maximal degree in co-relation 222106. Up to 48252 conditions per place. [2023-08-27 01:01:45,654 INFO L140 encePairwiseOnDemand]: 348/352 looper letters, 120 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2023-08-27 01:01:45,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 135 transitions, 1598 flow [2023-08-27 01:01:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:01:45,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:01:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 653 transitions. [2023-08-27 01:01:45,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3710227272727273 [2023-08-27 01:01:45,655 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 653 transitions. [2023-08-27 01:01:45,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 653 transitions. [2023-08-27 01:01:45,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:01:45,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 653 transitions. [2023-08-27 01:01:45,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:45,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:45,658 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:45,658 INFO L175 Difference]: Start difference. First operand has 133 places, 136 transitions, 1352 flow. Second operand 5 states and 653 transitions. [2023-08-27 01:01:45,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 135 transitions, 1598 flow [2023-08-27 01:01:48,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 135 transitions, 1476 flow, removed 29 selfloop flow, removed 10 redundant places. [2023-08-27 01:01:48,073 INFO L231 Difference]: Finished difference. Result has 126 places, 135 transitions, 1236 flow [2023-08-27 01:01:48,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1236, PETRI_PLACES=126, PETRI_TRANSITIONS=135} [2023-08-27 01:01:48,074 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 74 predicate places. [2023-08-27 01:01:48,074 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 135 transitions, 1236 flow [2023-08-27 01:01:48,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 125.95454545454545) internal successors, (2771), 22 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:48,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:01:48,075 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:01:48,079 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 01:01:48,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:01:48,275 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:01:48,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:01:48,276 INFO L85 PathProgramCache]: Analyzing trace with hash -285703431, now seen corresponding path program 3 times [2023-08-27 01:01:48,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:01:48,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631297443] [2023-08-27 01:01:48,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:01:48,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:01:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:01:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:01:48,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:01:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631297443] [2023-08-27 01:01:48,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631297443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:01:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237683027] [2023-08-27 01:01:48,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:01:48,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:01:48,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:01:48,432 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:01:48,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 01:01:48,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 01:01:48,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:01:48,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 01:01:48,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:01:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:01:48,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:01:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:01:48,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237683027] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:01:48,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:01:48,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-27 01:01:48,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76371530] [2023-08-27 01:01:48,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:01:48,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 01:01:48,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:01:48,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 01:01:48,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-08-27 01:01:48,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:01:48,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 135 transitions, 1236 flow. Second operand has 24 states, 24 states have (on average 135.41666666666666) internal successors, (3250), 24 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:48,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:01:48,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:01:48,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:01:54,723 INFO L124 PetriNetUnfolderBase]: 47510/62198 cut-off events. [2023-08-27 01:01:54,723 INFO L125 PetriNetUnfolderBase]: For 245012/245012 co-relation queries the response was YES. [2023-08-27 01:01:55,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246541 conditions, 62198 events. 47510/62198 cut-off events. For 245012/245012 co-relation queries the response was YES. Maximal size of possible extension queue 1629. Compared 328038 event pairs, 14728 based on Foata normal form. 2050/61189 useless extension candidates. Maximal degree in co-relation 246502. Up to 18723 conditions per place. [2023-08-27 01:01:55,326 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 215 selfloop transitions, 54 changer transitions 0/269 dead transitions. [2023-08-27 01:01:55,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 269 transitions, 2315 flow [2023-08-27 01:01:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 01:01:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 01:01:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1612 transitions. [2023-08-27 01:01:55,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41632231404958675 [2023-08-27 01:01:55,329 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1612 transitions. [2023-08-27 01:01:55,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1612 transitions. [2023-08-27 01:01:55,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:01:55,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1612 transitions. [2023-08-27 01:01:55,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.54545454545453) internal successors, (1612), 11 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:55,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 352.0) internal successors, (4224), 12 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:55,333 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 352.0) internal successors, (4224), 12 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:55,333 INFO L175 Difference]: Start difference. First operand has 126 places, 135 transitions, 1236 flow. Second operand 11 states and 1612 transitions. [2023-08-27 01:01:55,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 269 transitions, 2315 flow [2023-08-27 01:01:57,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 269 transitions, 2284 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-27 01:01:57,539 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 1503 flow [2023-08-27 01:01:57,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1503, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2023-08-27 01:01:57,540 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 86 predicate places. [2023-08-27 01:01:57,540 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 1503 flow [2023-08-27 01:01:57,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 135.41666666666666) internal successors, (3250), 24 states have internal predecessors, (3250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:57,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:01:57,540 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:01:57,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 01:01:57,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 01:01:57,746 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:01:57,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:01:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2083735458, now seen corresponding path program 4 times [2023-08-27 01:01:57,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:01:57,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802886624] [2023-08-27 01:01:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:01:57,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:01:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:01:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:01:58,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:01:58,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802886624] [2023-08-27 01:01:58,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802886624] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:01:58,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615621094] [2023-08-27 01:01:58,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:01:58,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:01:58,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:01:58,469 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:01:58,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 01:01:58,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:01:58,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:01:58,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-27 01:01:58,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:01:58,770 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:01:58,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:58,816 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:01:58,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:58,855 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:01:58,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:58,896 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:01:58,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:01:58,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:01:58,948 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:01:58,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:01:59,005 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:01:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:01:59,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:01:59,330 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1391 Int) (v_ArrVal_1395 (Array Int Int)) (v_ArrVal_1394 (Array Int Int)) (v_ArrVal_1393 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~3#1|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_1391)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1393) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1394) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1395) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649)) is different from false [2023-08-27 01:01:59,348 INFO L322 Elim1Store]: treesize reduction 21, result has 54.3 percent of original size [2023-08-27 01:01:59,348 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 43 [2023-08-27 01:01:59,357 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:01:59,357 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 553 treesize of output 529 [2023-08-27 01:01:59,363 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2023-08-27 01:01:59,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2023-08-27 01:01:59,376 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2023-08-27 01:01:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-27 01:01:59,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615621094] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:01:59,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:01:59,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-27 01:01:59,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621530914] [2023-08-27 01:01:59,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:01:59,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-27 01:01:59,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:01:59,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-27 01:01:59,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1261, Unknown=14, NotChecked=72, Total=1482 [2023-08-27 01:01:59,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:01:59,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 1503 flow. Second operand has 39 states, 39 states have (on average 123.25641025641026) internal successors, (4807), 39 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:01:59,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:01:59,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:01:59,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:02:06,087 INFO L124 PetriNetUnfolderBase]: 47814/62572 cut-off events. [2023-08-27 01:02:06,087 INFO L125 PetriNetUnfolderBase]: For 286950/286950 co-relation queries the response was YES. [2023-08-27 01:02:06,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272402 conditions, 62572 events. 47814/62572 cut-off events. For 286950/286950 co-relation queries the response was YES. Maximal size of possible extension queue 1651. Compared 329842 event pairs, 27683 based on Foata normal form. 35/59534 useless extension candidates. Maximal degree in co-relation 272358. Up to 59917 conditions per place. [2023-08-27 01:02:06,781 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 185 selfloop transitions, 39 changer transitions 0/224 dead transitions. [2023-08-27 01:02:06,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 224 transitions, 2370 flow [2023-08-27 01:02:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 01:02:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 01:02:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1566 transitions. [2023-08-27 01:02:06,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37073863636363635 [2023-08-27 01:02:06,785 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1566 transitions. [2023-08-27 01:02:06,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1566 transitions. [2023-08-27 01:02:06,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:02:06,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1566 transitions. [2023-08-27 01:02:06,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 130.5) internal successors, (1566), 12 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:06,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:06,958 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:06,958 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 1503 flow. Second operand 12 states and 1566 transitions. [2023-08-27 01:02:06,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 224 transitions, 2370 flow [2023-08-27 01:02:10,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 224 transitions, 2322 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-08-27 01:02:10,717 INFO L231 Difference]: Finished difference. Result has 143 places, 147 transitions, 1618 flow [2023-08-27 01:02:10,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1618, PETRI_PLACES=143, PETRI_TRANSITIONS=147} [2023-08-27 01:02:10,718 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 91 predicate places. [2023-08-27 01:02:10,718 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 147 transitions, 1618 flow [2023-08-27 01:02:10,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 123.25641025641026) internal successors, (4807), 39 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:10,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:02:10,719 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:02:10,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 01:02:10,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 01:02:10,920 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:02:10,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:02:10,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1999573472, now seen corresponding path program 4 times [2023-08-27 01:02:10,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:02:10,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931378682] [2023-08-27 01:02:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:02:10,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:02:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:02:11,527 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 01:02:11,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:02:11,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931378682] [2023-08-27 01:02:11,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931378682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:02:11,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91687333] [2023-08-27 01:02:11,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:02:11,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:02:11,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:02:11,533 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:02:11,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 01:02:11,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:02:11,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:02:11,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-27 01:02:11,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:02:11,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:02:11,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:02:11,880 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:02:11,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:02:11,927 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:02:11,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:02:11,969 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:02:12,037 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:02:12,074 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:02:12,110 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:02:12,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:02:12,146 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:02:12,168 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 01:02:12,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:02:12,190 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1497 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1497) c_~A~0.base) (+ c_~A~0.offset (* 4 |c_thread3Thread1of1ForFork2_~i~2#1|))) 2147483649)) is different from false [2023-08-27 01:02:12,195 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1495 Int) (v_ArrVal_1497 (Array Int Int))) (< (let ((.cse0 (* 4 |c_thread3Thread1of1ForFork2_~i~2#1|))) (select (select (store (store |c_#memory_int| c_~A~0.base (store (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset .cse0) v_ArrVal_1495)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1497) c_~A~0.base) (+ c_~A~0.offset .cse0 4))) 2147483649)) is different from false [2023-08-27 01:02:12,467 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1493 Int) (v_ArrVal_1492 Int) (v_ArrVal_1495 Int) (v_ArrVal_1489 (Array Int Int)) (v_ArrVal_1488 (Array Int Int)) (v_ArrVal_1497 (Array Int Int)) (v_ArrVal_1490 (Array Int Int))) (< (select (select (store (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1488) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1489) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1490))) (store .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| (store (store (store (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| v_ArrVal_1492) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_1493) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) v_ArrVal_1495))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1497) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483649)) is different from false [2023-08-27 01:02:12,480 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:02:12,480 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 61 [2023-08-27 01:02:12,493 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:02:12,494 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2193 treesize of output 2145 [2023-08-27 01:02:12,504 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 226 [2023-08-27 01:02:12,511 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 107 [2023-08-27 01:02:12,521 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 206 [2023-08-27 01:02:12,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2023-08-27 01:02:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-08-27 01:02:12,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91687333] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:02:12,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:02:12,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2023-08-27 01:02:12,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917280146] [2023-08-27 01:02:12,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:02:12,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-27 01:02:12,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:02:12,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-27 01:02:12,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1259, Unknown=13, NotChecked=222, Total=1640 [2023-08-27 01:02:12,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:02:12,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 147 transitions, 1618 flow. Second operand has 41 states, 41 states have (on average 120.2439024390244) internal successors, (4930), 41 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:12,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:02:12,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:02:12,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:02:19,962 INFO L124 PetriNetUnfolderBase]: 49497/64658 cut-off events. [2023-08-27 01:02:19,962 INFO L125 PetriNetUnfolderBase]: For 294728/294728 co-relation queries the response was YES. [2023-08-27 01:02:20,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281018 conditions, 64658 events. 49497/64658 cut-off events. For 294728/294728 co-relation queries the response was YES. Maximal size of possible extension queue 1695. Compared 337404 event pairs, 25808 based on Foata normal form. 403/61902 useless extension candidates. Maximal degree in co-relation 280975. Up to 43711 conditions per place. [2023-08-27 01:02:20,830 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 232 selfloop transitions, 36 changer transitions 0/268 dead transitions. [2023-08-27 01:02:20,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 268 transitions, 2620 flow [2023-08-27 01:02:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 01:02:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 01:02:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1568 transitions. [2023-08-27 01:02:20,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2023-08-27 01:02:20,832 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1568 transitions. [2023-08-27 01:02:20,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1568 transitions. [2023-08-27 01:02:20,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:02:20,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1568 transitions. [2023-08-27 01:02:20,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 130.66666666666666) internal successors, (1568), 12 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:20,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:20,836 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:20,836 INFO L175 Difference]: Start difference. First operand has 143 places, 147 transitions, 1618 flow. Second operand 12 states and 1568 transitions. [2023-08-27 01:02:20,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 268 transitions, 2620 flow [2023-08-27 01:02:23,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 268 transitions, 2532 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-08-27 01:02:23,555 INFO L231 Difference]: Finished difference. Result has 146 places, 149 transitions, 1654 flow [2023-08-27 01:02:23,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1654, PETRI_PLACES=146, PETRI_TRANSITIONS=149} [2023-08-27 01:02:23,555 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 94 predicate places. [2023-08-27 01:02:23,555 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 149 transitions, 1654 flow [2023-08-27 01:02:23,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 120.2439024390244) internal successors, (4930), 41 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:23,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:02:23,556 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:02:23,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 01:02:23,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 01:02:23,762 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:02:23,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:02:23,762 INFO L85 PathProgramCache]: Analyzing trace with hash -171286164, now seen corresponding path program 5 times [2023-08-27 01:02:23,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:02:23,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641126279] [2023-08-27 01:02:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:02:23,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:02:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:02:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:02:24,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:02:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641126279] [2023-08-27 01:02:24,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641126279] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:02:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683425985] [2023-08-27 01:02:24,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:02:24,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:02:24,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:02:24,369 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:02:24,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 01:02:24,559 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 01:02:24,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:02:24,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-27 01:02:24,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:02:24,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:02:24,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:02:24,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:02:24,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:02:24,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:02:24,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:02:24,861 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:02:24,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:02:24,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:02:24,938 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:02:24,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:02:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:02:24,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:02:27,316 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:02:27,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 01:02:27,324 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:02:27,324 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 133 [2023-08-27 01:02:27,328 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 106 [2023-08-27 01:02:27,332 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2023-08-27 01:02:27,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2023-08-27 01:02:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:02:27,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683425985] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:02:27,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:02:27,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2023-08-27 01:02:27,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762092011] [2023-08-27 01:02:27,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:02:27,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-27 01:02:27,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:02:27,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-27 01:02:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1562, Unknown=15, NotChecked=0, Total=1722 [2023-08-27 01:02:27,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:02:27,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 149 transitions, 1654 flow. Second operand has 42 states, 42 states have (on average 123.23809523809524) internal successors, (5176), 42 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:27,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:02:27,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:02:27,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:02:34,749 INFO L124 PetriNetUnfolderBase]: 49731/64962 cut-off events. [2023-08-27 01:02:34,749 INFO L125 PetriNetUnfolderBase]: For 255199/255199 co-relation queries the response was YES. [2023-08-27 01:02:35,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287531 conditions, 64962 events. 49731/64962 cut-off events. For 255199/255199 co-relation queries the response was YES. Maximal size of possible extension queue 1716. Compared 340049 event pairs, 29958 based on Foata normal form. 35/61824 useless extension candidates. Maximal degree in co-relation 287487. Up to 63380 conditions per place. [2023-08-27 01:02:35,406 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 216 selfloop transitions, 29 changer transitions 0/245 dead transitions. [2023-08-27 01:02:35,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 245 transitions, 2625 flow [2023-08-27 01:02:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 01:02:35,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 01:02:35,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1823 transitions. [2023-08-27 01:02:35,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36992694805194803 [2023-08-27 01:02:35,408 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1823 transitions. [2023-08-27 01:02:35,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1823 transitions. [2023-08-27 01:02:35,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:02:35,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1823 transitions. [2023-08-27 01:02:35,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 130.21428571428572) internal successors, (1823), 14 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:35,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:35,413 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:35,413 INFO L175 Difference]: Start difference. First operand has 146 places, 149 transitions, 1654 flow. Second operand 14 states and 1823 transitions. [2023-08-27 01:02:35,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 245 transitions, 2625 flow [2023-08-27 01:02:38,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 245 transitions, 2473 flow, removed 23 selfloop flow, removed 10 redundant places. [2023-08-27 01:02:38,725 INFO L231 Difference]: Finished difference. Result has 152 places, 154 transitions, 1652 flow [2023-08-27 01:02:38,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1652, PETRI_PLACES=152, PETRI_TRANSITIONS=154} [2023-08-27 01:02:38,726 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2023-08-27 01:02:38,726 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 154 transitions, 1652 flow [2023-08-27 01:02:38,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 123.23809523809524) internal successors, (5176), 42 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:38,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:02:38,727 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:02:38,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 01:02:38,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 01:02:38,928 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:02:38,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:02:38,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1845245802, now seen corresponding path program 5 times [2023-08-27 01:02:38,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:02:38,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994716075] [2023-08-27 01:02:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:02:38,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:02:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:02:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:02:39,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:02:39,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994716075] [2023-08-27 01:02:39,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994716075] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:02:39,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854660667] [2023-08-27 01:02:39,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:02:39,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:02:39,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:02:39,149 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:02:39,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 01:02:39,364 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 01:02:39,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:02:39,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 01:02:39,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:02:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:02:39,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:02:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:02:39,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854660667] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:02:39,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:02:39,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-27 01:02:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129578684] [2023-08-27 01:02:39,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:02:39,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 01:02:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:02:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 01:02:39,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-08-27 01:02:39,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:02:39,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 154 transitions, 1652 flow. Second operand has 29 states, 29 states have (on average 135.3448275862069) internal successors, (3925), 29 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:39,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:02:39,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:02:39,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:02:47,637 INFO L124 PetriNetUnfolderBase]: 61643/80573 cut-off events. [2023-08-27 01:02:47,638 INFO L125 PetriNetUnfolderBase]: For 287116/287116 co-relation queries the response was YES. [2023-08-27 01:02:48,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330775 conditions, 80573 events. 61643/80573 cut-off events. For 287116/287116 co-relation queries the response was YES. Maximal size of possible extension queue 2025. Compared 433431 event pairs, 19784 based on Foata normal form. 841/77467 useless extension candidates. Maximal degree in co-relation 330732. Up to 26746 conditions per place. [2023-08-27 01:02:48,491 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 237 selfloop transitions, 76 changer transitions 0/313 dead transitions. [2023-08-27 01:02:48,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 313 transitions, 2941 flow [2023-08-27 01:02:48,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 01:02:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 01:02:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1900 transitions. [2023-08-27 01:02:48,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152097902097902 [2023-08-27 01:02:48,494 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1900 transitions. [2023-08-27 01:02:48,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1900 transitions. [2023-08-27 01:02:48,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:02:48,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1900 transitions. [2023-08-27 01:02:48,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 146.15384615384616) internal successors, (1900), 13 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:48,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:48,500 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:48,500 INFO L175 Difference]: Start difference. First operand has 152 places, 154 transitions, 1652 flow. Second operand 13 states and 1900 transitions. [2023-08-27 01:02:48,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 313 transitions, 2941 flow [2023-08-27 01:02:51,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 313 transitions, 2857 flow, removed 22 selfloop flow, removed 10 redundant places. [2023-08-27 01:02:51,583 INFO L231 Difference]: Finished difference. Result has 160 places, 164 transitions, 1996 flow [2023-08-27 01:02:51,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1996, PETRI_PLACES=160, PETRI_TRANSITIONS=164} [2023-08-27 01:02:51,584 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 108 predicate places. [2023-08-27 01:02:51,584 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 164 transitions, 1996 flow [2023-08-27 01:02:51,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 135.3448275862069) internal successors, (3925), 29 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:51,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:02:51,585 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:02:51,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 01:02:51,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:02:51,790 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:02:51,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:02:51,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1387079157, now seen corresponding path program 6 times [2023-08-27 01:02:51,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:02:51,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618157623] [2023-08-27 01:02:51,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:02:51,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:02:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:02:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:02:52,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:02:52,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618157623] [2023-08-27 01:02:52,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618157623] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:02:52,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626469096] [2023-08-27 01:02:52,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:02:52,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:02:52,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:02:52,481 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:02:52,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 01:02:52,650 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-27 01:02:52,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:02:52,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-27 01:02:52,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:02:52,894 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:02:52,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:02:52,940 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:02:52,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:02:52,983 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:02:53,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:02:53,024 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:02:53,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:02:53,091 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:02:53,098 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:02:53,126 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:02:53,154 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:02:53,192 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:02:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:02:53,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:02:53,336 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1784 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1784) c_~A~0.base) (+ c_~A~0.offset (* 4 |c_thread3Thread1of1ForFork2_~i~2#1|) 16)) 2147483649)) is different from false [2023-08-27 01:02:53,655 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:02:53,655 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-27 01:02:53,663 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:02:53,663 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 549 treesize of output 537 [2023-08-27 01:02:53,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 250 [2023-08-27 01:02:53,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2023-08-27 01:02:53,684 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 202 [2023-08-27 01:02:53,692 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 98 [2023-08-27 01:02:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:02:54,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626469096] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:02:54,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:02:54,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 44 [2023-08-27 01:02:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900997844] [2023-08-27 01:02:54,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:02:54,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-08-27 01:02:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:02:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-08-27 01:02:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1807, Unknown=23, NotChecked=86, Total=2070 [2023-08-27 01:02:54,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:02:54,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 164 transitions, 1996 flow. Second operand has 46 states, 46 states have (on average 120.23913043478261) internal successors, (5531), 46 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:02:54,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:02:54,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:02:54,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:03:04,095 INFO L124 PetriNetUnfolderBase]: 63326/82659 cut-off events. [2023-08-27 01:03:04,095 INFO L125 PetriNetUnfolderBase]: For 513566/513566 co-relation queries the response was YES. [2023-08-27 01:03:04,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379658 conditions, 82659 events. 63326/82659 cut-off events. For 513566/513566 co-relation queries the response was YES. Maximal size of possible extension queue 1982. Compared 442777 event pairs, 33111 based on Foata normal form. 403/79029 useless extension candidates. Maximal degree in co-relation 379609. Up to 60909 conditions per place. [2023-08-27 01:03:05,283 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 274 selfloop transitions, 33 changer transitions 0/307 dead transitions. [2023-08-27 01:03:05,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 307 transitions, 3167 flow [2023-08-27 01:03:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 01:03:05,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 01:03:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1826 transitions. [2023-08-27 01:03:05,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2023-08-27 01:03:05,285 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1826 transitions. [2023-08-27 01:03:05,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1826 transitions. [2023-08-27 01:03:05,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:03:05,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1826 transitions. [2023-08-27 01:03:05,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 130.42857142857142) internal successors, (1826), 14 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:05,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:05,290 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:05,290 INFO L175 Difference]: Start difference. First operand has 160 places, 164 transitions, 1996 flow. Second operand 14 states and 1826 transitions. [2023-08-27 01:03:05,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 307 transitions, 3167 flow [2023-08-27 01:03:12,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 307 transitions, 3125 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-08-27 01:03:12,120 INFO L231 Difference]: Finished difference. Result has 167 places, 166 transitions, 2080 flow [2023-08-27 01:03:12,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2080, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2023-08-27 01:03:12,121 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 115 predicate places. [2023-08-27 01:03:12,121 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 2080 flow [2023-08-27 01:03:12,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 120.23913043478261) internal successors, (5531), 46 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:12,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:03:12,122 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:03:12,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 01:03:12,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:03:12,323 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:03:12,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:03:12,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1014900194, now seen corresponding path program 6 times [2023-08-27 01:03:12,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:03:12,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695013482] [2023-08-27 01:03:12,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:03:12,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:03:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:03:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:03:12,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:03:12,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695013482] [2023-08-27 01:03:12,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695013482] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:03:12,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609076228] [2023-08-27 01:03:12,542 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:03:12,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:03:12,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:03:12,545 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:03:12,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 01:03:12,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-27 01:03:12,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:03:12,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 01:03:12,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:03:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:03:13,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:03:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:03:13,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609076228] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:03:13,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:03:13,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2023-08-27 01:03:13,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689192861] [2023-08-27 01:03:13,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:03:13,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 01:03:13,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:03:13,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 01:03:13,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2023-08-27 01:03:13,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:03:13,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 2080 flow. Second operand has 34 states, 34 states have (on average 135.23529411764707) internal successors, (4598), 34 states have internal predecessors, (4598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:13,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:03:13,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:03:13,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:03:24,399 INFO L124 PetriNetUnfolderBase]: 78295/102131 cut-off events. [2023-08-27 01:03:24,400 INFO L125 PetriNetUnfolderBase]: For 531645/531645 co-relation queries the response was YES. [2023-08-27 01:03:25,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476320 conditions, 102131 events. 78295/102131 cut-off events. For 531645/531645 co-relation queries the response was YES. Maximal size of possible extension queue 2428. Compared 559495 event pairs, 23361 based on Foata normal form. 876/98037 useless extension candidates. Maximal degree in co-relation 476271. Up to 35207 conditions per place. [2023-08-27 01:03:25,636 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 269 selfloop transitions, 102 changer transitions 0/371 dead transitions. [2023-08-27 01:03:25,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 371 transitions, 3969 flow [2023-08-27 01:03:25,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 01:03:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 01:03:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2188 transitions. [2023-08-27 01:03:25,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41439393939393937 [2023-08-27 01:03:25,639 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2188 transitions. [2023-08-27 01:03:25,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2188 transitions. [2023-08-27 01:03:25,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:03:25,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2188 transitions. [2023-08-27 01:03:25,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.86666666666667) internal successors, (2188), 15 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:25,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:25,645 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:25,646 INFO L175 Difference]: Start difference. First operand has 167 places, 166 transitions, 2080 flow. Second operand 15 states and 2188 transitions. [2023-08-27 01:03:25,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 371 transitions, 3969 flow [2023-08-27 01:03:41,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 371 transitions, 3699 flow, removed 58 selfloop flow, removed 12 redundant places. [2023-08-27 01:03:41,189 INFO L231 Difference]: Finished difference. Result has 177 places, 192 transitions, 2687 flow [2023-08-27 01:03:41,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1869, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2687, PETRI_PLACES=177, PETRI_TRANSITIONS=192} [2023-08-27 01:03:41,190 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 125 predicate places. [2023-08-27 01:03:41,190 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 192 transitions, 2687 flow [2023-08-27 01:03:41,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 135.23529411764707) internal successors, (4598), 34 states have internal predecessors, (4598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:41,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:03:41,191 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:03:41,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 01:03:41,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:03:41,391 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:03:41,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:03:41,392 INFO L85 PathProgramCache]: Analyzing trace with hash 142708183, now seen corresponding path program 7 times [2023-08-27 01:03:41,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:03:41,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097684035] [2023-08-27 01:03:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:03:41,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:03:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:03:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:03:42,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:03:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097684035] [2023-08-27 01:03:42,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097684035] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:03:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410593301] [2023-08-27 01:03:42,170 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:03:42,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:03:42,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:03:42,173 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:03:42,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 01:03:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:03:42,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-27 01:03:42,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:03:42,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 01:03:42,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:03:42,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:03:42,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:03:42,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:03:42,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:03:42,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:03:42,758 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:03:42,790 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-27 01:03:42,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-27 01:03:42,865 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-27 01:03:42,906 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-27 01:03:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:03:42,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:03:43,148 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1985 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1985) c_~A~0.base) (+ c_~A~0.offset 20)) 2147483649)) is different from false [2023-08-27 01:03:43,162 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1985 (Array Int Int)) (v_ArrVal_1984 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1984) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1985) c_~A~0.base) (+ c_~A~0.offset 20)) 2147483649)) is different from false [2023-08-27 01:03:43,274 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:03:43,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 01:03:43,291 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:03:43,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 553 treesize of output 529 [2023-08-27 01:03:43,299 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2023-08-27 01:03:43,306 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2023-08-27 01:03:43,358 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2023-08-27 01:03:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:03:43,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410593301] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:03:43,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:03:43,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2023-08-27 01:03:43,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795013325] [2023-08-27 01:03:43,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:03:43,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-27 01:03:43,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:03:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-27 01:03:43,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2102, Unknown=8, NotChecked=186, Total=2450 [2023-08-27 01:03:43,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:03:43,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 192 transitions, 2687 flow. Second operand has 50 states, 50 states have (on average 123.2) internal successors, (6160), 50 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:43,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:03:43,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:03:43,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:03:57,427 INFO L124 PetriNetUnfolderBase]: 78447/102318 cut-off events. [2023-08-27 01:03:57,427 INFO L125 PetriNetUnfolderBase]: For 675674/675674 co-relation queries the response was YES. [2023-08-27 01:03:58,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487070 conditions, 102318 events. 78447/102318 cut-off events. For 675674/675674 co-relation queries the response was YES. Maximal size of possible extension queue 2365. Compared 562056 event pairs, 45731 based on Foata normal form. 35/97376 useless extension candidates. Maximal degree in co-relation 487018. Up to 100583 conditions per place. [2023-08-27 01:03:59,010 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 273 selfloop transitions, 34 changer transitions 0/307 dead transitions. [2023-08-27 01:03:59,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 307 transitions, 3934 flow [2023-08-27 01:03:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 01:03:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 01:03:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2080 transitions. [2023-08-27 01:03:59,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2023-08-27 01:03:59,014 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2080 transitions. [2023-08-27 01:03:59,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2080 transitions. [2023-08-27 01:03:59,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:03:59,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2080 transitions. [2023-08-27 01:03:59,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 130.0) internal successors, (2080), 16 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:59,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 352.0) internal successors, (5984), 17 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:59,022 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 352.0) internal successors, (5984), 17 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:03:59,022 INFO L175 Difference]: Start difference. First operand has 177 places, 192 transitions, 2687 flow. Second operand 16 states and 2080 transitions. [2023-08-27 01:03:59,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 307 transitions, 3934 flow [2023-08-27 01:04:08,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 307 transitions, 3880 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-08-27 01:04:08,074 INFO L231 Difference]: Finished difference. Result has 193 places, 202 transitions, 2896 flow [2023-08-27 01:04:08,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=2633, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2896, PETRI_PLACES=193, PETRI_TRANSITIONS=202} [2023-08-27 01:04:08,075 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 141 predicate places. [2023-08-27 01:04:08,075 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 202 transitions, 2896 flow [2023-08-27 01:04:08,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 123.2) internal successors, (6160), 50 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:08,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:08,076 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:08,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-08-27 01:04:08,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:08,276 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:08,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:08,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1723327802, now seen corresponding path program 7 times [2023-08-27 01:04:08,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:08,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533443252] [2023-08-27 01:04:08,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:08,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:09,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:09,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533443252] [2023-08-27 01:04:09,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533443252] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:09,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854015818] [2023-08-27 01:04:09,143 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:04:09,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:09,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:09,145 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:09,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 01:04:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:09,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-27 01:04:09,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:09,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 01:04:09,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:09,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:09,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:09,747 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:09,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:09,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:09,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:09,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:09,912 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:04:09,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-27 01:04:09,995 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-27 01:04:10,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-27 01:04:10,070 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-27 01:04:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:10,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:10,335 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2101 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_2101) c_~A~0.base) (+ c_~A~0.offset 20)) 2147483649)) is different from false [2023-08-27 01:04:10,558 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:10,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-27 01:04:10,569 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:10,569 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 549 treesize of output 537 [2023-08-27 01:04:10,578 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 250 [2023-08-27 01:04:10,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 122 [2023-08-27 01:04:10,593 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 214 [2023-08-27 01:04:10,598 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 198 [2023-08-27 01:04:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:11,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854015818] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:11,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:11,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2023-08-27 01:04:11,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991235486] [2023-08-27 01:04:11,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:11,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-27 01:04:11,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:11,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-27 01:04:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2462, Unknown=19, NotChecked=100, Total=2756 [2023-08-27 01:04:11,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:04:11,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 202 transitions, 2896 flow. Second operand has 53 states, 53 states have (on average 120.18867924528301) internal successors, (6370), 53 states have internal predecessors, (6370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:11,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:11,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:04:11,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:26,061 INFO L124 PetriNetUnfolderBase]: 80130/104404 cut-off events. [2023-08-27 01:04:26,061 INFO L125 PetriNetUnfolderBase]: For 761068/761068 co-relation queries the response was YES. [2023-08-27 01:04:27,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502192 conditions, 104404 events. 80130/104404 cut-off events. For 761068/761068 co-relation queries the response was YES. Maximal size of possible extension queue 2391. Compared 570762 event pairs, 41511 based on Foata normal form. 403/99744 useless extension candidates. Maximal degree in co-relation 502133. Up to 80380 conditions per place. [2023-08-27 01:04:27,517 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 328 selfloop transitions, 39 changer transitions 0/367 dead transitions. [2023-08-27 01:04:27,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 367 transitions, 4278 flow [2023-08-27 01:04:27,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 01:04:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 01:04:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2084 transitions. [2023-08-27 01:04:27,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700284090909091 [2023-08-27 01:04:27,520 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2084 transitions. [2023-08-27 01:04:27,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2084 transitions. [2023-08-27 01:04:27,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:27,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2084 transitions. [2023-08-27 01:04:27,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 130.25) internal successors, (2084), 16 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:27,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 352.0) internal successors, (5984), 17 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:27,527 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 352.0) internal successors, (5984), 17 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:27,527 INFO L175 Difference]: Start difference. First operand has 193 places, 202 transitions, 2896 flow. Second operand 16 states and 2084 transitions. [2023-08-27 01:04:27,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 367 transitions, 4278 flow [2023-08-27 01:04:37,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 367 transitions, 4190 flow, removed 34 selfloop flow, removed 7 redundant places. [2023-08-27 01:04:37,109 INFO L231 Difference]: Finished difference. Result has 202 places, 204 transitions, 2956 flow [2023-08-27 01:04:37,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2956, PETRI_PLACES=202, PETRI_TRANSITIONS=204} [2023-08-27 01:04:37,109 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 150 predicate places. [2023-08-27 01:04:37,109 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 204 transitions, 2956 flow [2023-08-27 01:04:37,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 120.18867924528301) internal successors, (6370), 53 states have internal predecessors, (6370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:37,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:37,110 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:37,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 01:04:37,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:37,311 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:37,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:37,311 INFO L85 PathProgramCache]: Analyzing trace with hash 128989971, now seen corresponding path program 8 times [2023-08-27 01:04:37,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:37,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144022534] [2023-08-27 01:04:37,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:37,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:37,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:37,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144022534] [2023-08-27 01:04:37,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144022534] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:37,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798449465] [2023-08-27 01:04:37,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:04:37,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:37,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:37,534 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:37,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 01:04:37,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:04:37,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:04:37,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 01:04:37,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:37,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:38,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798449465] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:38,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:38,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2023-08-27 01:04:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283120223] [2023-08-27 01:04:38,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:38,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-27 01:04:38,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-27 01:04:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1111, Unknown=0, NotChecked=0, Total=1482 [2023-08-27 01:04:38,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:04:38,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 204 transitions, 2956 flow. Second operand has 39 states, 39 states have (on average 135.2051282051282) internal successors, (5273), 39 states have internal predecessors, (5273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:38,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:38,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:04:38,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:53,362 INFO L124 PetriNetUnfolderBase]: 96934/126149 cut-off events. [2023-08-27 01:04:53,362 INFO L125 PetriNetUnfolderBase]: For 745337/745337 co-relation queries the response was YES. [2023-08-27 01:04:54,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620838 conditions, 126149 events. 96934/126149 cut-off events. For 745337/745337 co-relation queries the response was YES. Maximal size of possible extension queue 2727. Compared 697469 event pairs, 28065 based on Foata normal form. 876/120932 useless extension candidates. Maximal degree in co-relation 620777. Up to 44106 conditions per place. [2023-08-27 01:04:55,507 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 305 selfloop transitions, 132 changer transitions 0/437 dead transitions. [2023-08-27 01:04:55,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 437 transitions, 5262 flow [2023-08-27 01:04:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 01:04:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 01:04:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2476 transitions. [2023-08-27 01:04:55,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137700534759358 [2023-08-27 01:04:55,509 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2476 transitions. [2023-08-27 01:04:55,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2476 transitions. [2023-08-27 01:04:55,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:55,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2476 transitions. [2023-08-27 01:04:55,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 145.64705882352942) internal successors, (2476), 17 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:55,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 352.0) internal successors, (6336), 18 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:55,517 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 352.0) internal successors, (6336), 18 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:55,517 INFO L175 Difference]: Start difference. First operand has 202 places, 204 transitions, 2956 flow. Second operand 17 states and 2476 transitions. [2023-08-27 01:04:55,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 437 transitions, 5262 flow [2023-08-27 01:05:22,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 437 transitions, 4911 flow, removed 72 selfloop flow, removed 14 redundant places. [2023-08-27 01:05:22,906 INFO L231 Difference]: Finished difference. Result has 213 places, 234 transitions, 3758 flow [2023-08-27 01:05:22,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3758, PETRI_PLACES=213, PETRI_TRANSITIONS=234} [2023-08-27 01:05:22,906 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 161 predicate places. [2023-08-27 01:05:22,906 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 234 transitions, 3758 flow [2023-08-27 01:05:22,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 135.2051282051282) internal successors, (5273), 39 states have internal predecessors, (5273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:22,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:05:22,907 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:05:22,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-27 01:05:23,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-27 01:05:23,113 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:05:23,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:05:23,113 INFO L85 PathProgramCache]: Analyzing trace with hash 194110604, now seen corresponding path program 9 times [2023-08-27 01:05:23,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:05:23,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152888468] [2023-08-27 01:05:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:05:23,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:05:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:05:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:23,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:05:23,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152888468] [2023-08-27 01:05:23,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152888468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:05:23,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436482911] [2023-08-27 01:05:23,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:05:23,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:05:23,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:05:23,937 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:05:23,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 01:05:24,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-27 01:05:24,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:05:24,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 64 conjunts are in the unsatisfiable core [2023-08-27 01:05:24,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:05:24,490 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:05:24,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:24,536 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:05:24,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:24,577 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:05:24,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:24,617 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:05:24,631 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:05:24,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:05:24,700 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:05:24,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:05:24,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:05:24,801 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:05:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:24,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:05:29,358 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:05:29,358 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 01:05:29,365 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:05:29,366 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1105 treesize of output 1057 [2023-08-27 01:05:29,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2023-08-27 01:05:29,378 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-27 01:05:29,381 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2023-08-27 01:05:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:29,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436482911] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:05:29,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:05:29,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2023-08-27 01:05:29,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695363426] [2023-08-27 01:05:29,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:05:29,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-08-27 01:05:29,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:05:29,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-08-27 01:05:29,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2661, Unknown=19, NotChecked=0, Total=2862 [2023-08-27 01:05:29,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:05:29,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 234 transitions, 3758 flow. Second operand has 54 states, 54 states have (on average 123.18518518518519) internal successors, (6652), 54 states have internal predecessors, (6652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:29,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:05:29,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:05:29,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:05:47,359 INFO L124 PetriNetUnfolderBase]: 97086/126336 cut-off events. [2023-08-27 01:05:47,359 INFO L125 PetriNetUnfolderBase]: For 837571/837571 co-relation queries the response was YES. [2023-08-27 01:05:48,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634075 conditions, 126336 events. 97086/126336 cut-off events. For 837571/837571 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 697519 event pairs, 59257 based on Foata normal form. 35/120271 useless extension candidates. Maximal degree in co-relation 634011. Up to 124448 conditions per place. [2023-08-27 01:05:49,322 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 325 selfloop transitions, 39 changer transitions 0/364 dead transitions. [2023-08-27 01:05:49,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 364 transitions, 5240 flow [2023-08-27 01:05:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 01:05:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 01:05:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2337 transitions. [2023-08-27 01:05:49,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36884469696969696 [2023-08-27 01:05:49,325 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2337 transitions. [2023-08-27 01:05:49,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2337 transitions. [2023-08-27 01:05:49,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:05:49,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2337 transitions. [2023-08-27 01:05:49,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 129.83333333333334) internal successors, (2337), 18 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:49,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 352.0) internal successors, (6688), 19 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:49,331 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 352.0) internal successors, (6688), 19 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:49,332 INFO L175 Difference]: Start difference. First operand has 213 places, 234 transitions, 3758 flow. Second operand 18 states and 2337 transitions. [2023-08-27 01:05:49,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 364 transitions, 5240 flow [2023-08-27 01:06:11,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 364 transitions, 5171 flow, removed 25 selfloop flow, removed 7 redundant places. [2023-08-27 01:06:11,781 INFO L231 Difference]: Finished difference. Result has 231 places, 245 transitions, 4018 flow [2023-08-27 01:06:11,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4018, PETRI_PLACES=231, PETRI_TRANSITIONS=245} [2023-08-27 01:06:11,782 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 179 predicate places. [2023-08-27 01:06:11,782 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 245 transitions, 4018 flow [2023-08-27 01:06:11,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 123.18518518518519) internal successors, (6652), 54 states have internal predecessors, (6652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:11,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:11,783 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:06:11,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 01:06:11,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 01:06:11,993 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:06:11,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:11,993 INFO L85 PathProgramCache]: Analyzing trace with hash -392669769, now seen corresponding path program 8 times [2023-08-27 01:06:11,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:11,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711232877] [2023-08-27 01:06:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:11,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:06:12,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:12,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711232877] [2023-08-27 01:06:12,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711232877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:06:12,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239151450] [2023-08-27 01:06:12,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:06:12,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:12,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:06:12,994 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:06:12,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 01:06:13,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:06:13,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:06:13,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-27 01:06:13,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:06:13,471 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:06:13,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:13,517 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:06:13,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:13,567 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:06:13,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:13,612 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:06:13,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:13,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:06:13,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:06:13,706 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:06:13,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:06:13,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:06:13,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:06:13,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:06:13,879 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:06:13,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:06:14,448 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:14,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-27 01:06:14,466 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:14,466 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35073 treesize of output 34305 [2023-08-27 01:06:14,491 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 123 [2023-08-27 01:06:14,497 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 115 [2023-08-27 01:06:14,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 214 [2023-08-27 01:06:14,508 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 98 [2023-08-27 01:06:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:06:14,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239151450] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:06:14,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:06:14,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 55 [2023-08-27 01:06:14,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295290954] [2023-08-27 01:06:14,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:06:14,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-08-27 01:06:14,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:14,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-08-27 01:06:14,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2951, Unknown=36, NotChecked=0, Total=3192 [2023-08-27 01:06:14,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:06:14,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 245 transitions, 4018 flow. Second operand has 57 states, 57 states have (on average 120.19298245614036) internal successors, (6851), 57 states have internal predecessors, (6851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:14,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:14,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:06:14,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:36,555 INFO L124 PetriNetUnfolderBase]: 98769/128422 cut-off events. [2023-08-27 01:06:36,555 INFO L125 PetriNetUnfolderBase]: For 983434/983434 co-relation queries the response was YES. [2023-08-27 01:06:38,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650581 conditions, 128422 events. 98769/128422 cut-off events. For 983434/983434 co-relation queries the response was YES. Maximal size of possible extension queue 2814. Compared 710815 event pairs, 52915 based on Foata normal form. 403/122639 useless extension candidates. Maximal degree in co-relation 650509. Up to 102124 conditions per place. [2023-08-27 01:06:39,043 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 387 selfloop transitions, 45 changer transitions 0/432 dead transitions. [2023-08-27 01:06:39,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 432 transitions, 5621 flow [2023-08-27 01:06:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 01:06:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 01:06:39,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2342 transitions. [2023-08-27 01:06:39,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696338383838384 [2023-08-27 01:06:39,046 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2342 transitions. [2023-08-27 01:06:39,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2342 transitions. [2023-08-27 01:06:39,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:39,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2342 transitions. [2023-08-27 01:06:39,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 130.11111111111111) internal successors, (2342), 18 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:39,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 352.0) internal successors, (6688), 19 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:39,054 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 352.0) internal successors, (6688), 19 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:39,054 INFO L175 Difference]: Start difference. First operand has 231 places, 245 transitions, 4018 flow. Second operand 18 states and 2342 transitions. [2023-08-27 01:06:39,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 432 transitions, 5621 flow [2023-08-27 01:07:01,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 432 transitions, 5516 flow, removed 41 selfloop flow, removed 8 redundant places. [2023-08-27 01:07:01,436 INFO L231 Difference]: Finished difference. Result has 241 places, 247 transitions, 4083 flow [2023-08-27 01:07:01,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=3913, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4083, PETRI_PLACES=241, PETRI_TRANSITIONS=247} [2023-08-27 01:07:01,437 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 189 predicate places. [2023-08-27 01:07:01,437 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 247 transitions, 4083 flow [2023-08-27 01:07:01,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 120.19298245614036) internal successors, (6851), 57 states have internal predecessors, (6851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:01,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:01,438 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:07:01,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-27 01:07:01,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 01:07:01,639 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:07:01,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:01,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1722465022, now seen corresponding path program 10 times [2023-08-27 01:07:01,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:01,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114886221] [2023-08-27 01:07:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:01,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 21 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:01,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:01,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114886221] [2023-08-27 01:07:01,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114886221] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:07:01,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756927224] [2023-08-27 01:07:01,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:07:01,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:01,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:01,931 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:07:01,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 01:07:02,125 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:07:02,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:07:02,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 01:07:02,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:07:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:02,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:07:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:02,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756927224] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:07:02,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:07:02,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 42 [2023-08-27 01:07:02,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076722664] [2023-08-27 01:07:02,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:07:02,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-27 01:07:02,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:07:02,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-27 01:07:02,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2023-08-27 01:07:02,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:07:02,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 247 transitions, 4083 flow. Second operand has 44 states, 44 states have (on average 135.1818181818182) internal successors, (5948), 44 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:02,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:07:02,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:07:02,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:07:24,300 INFO L124 PetriNetUnfolderBase]: 117408/152440 cut-off events. [2023-08-27 01:07:24,301 INFO L125 PetriNetUnfolderBase]: For 1001538/1001538 co-relation queries the response was YES. [2023-08-27 01:07:26,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 789508 conditions, 152440 events. 117408/152440 cut-off events. For 1001538/1001538 co-relation queries the response was YES. Maximal size of possible extension queue 3083. Compared 849765 event pairs, 32701 based on Foata normal form. 876/146007 useless extension candidates. Maximal degree in co-relation 789434. Up to 53443 conditions per place. [2023-08-27 01:07:27,121 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 342 selfloop transitions, 166 changer transitions 0/508 dead transitions. [2023-08-27 01:07:27,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 508 transitions, 6841 flow [2023-08-27 01:07:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 01:07:27,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 01:07:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2764 transitions. [2023-08-27 01:07:27,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41327751196172247 [2023-08-27 01:07:27,124 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2764 transitions. [2023-08-27 01:07:27,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2764 transitions. [2023-08-27 01:07:27,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:07:27,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2764 transitions. [2023-08-27 01:07:27,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 145.47368421052633) internal successors, (2764), 19 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:27,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 352.0) internal successors, (7040), 20 states have internal predecessors, (7040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:27,131 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 352.0) internal successors, (7040), 20 states have internal predecessors, (7040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:27,132 INFO L175 Difference]: Start difference. First operand has 241 places, 247 transitions, 4083 flow. Second operand 19 states and 2764 transitions. [2023-08-27 01:07:27,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 508 transitions, 6841 flow [2023-08-27 01:08:12,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 508 transitions, 6401 flow, removed 86 selfloop flow, removed 16 redundant places. [2023-08-27 01:08:12,599 INFO L231 Difference]: Finished difference. Result has 253 places, 281 transitions, 5104 flow [2023-08-27 01:08:12,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=3730, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5104, PETRI_PLACES=253, PETRI_TRANSITIONS=281} [2023-08-27 01:08:12,599 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 201 predicate places. [2023-08-27 01:08:12,599 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 281 transitions, 5104 flow [2023-08-27 01:08:12,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 135.1818181818182) internal successors, (5948), 44 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:12,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:12,600 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:12,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-27 01:08:12,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:12,800 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:08:12,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash -121116105, now seen corresponding path program 11 times [2023-08-27 01:08:12,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:12,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490837554] [2023-08-27 01:08:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:12,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:13,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:13,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490837554] [2023-08-27 01:08:13,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490837554] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:13,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144021050] [2023-08-27 01:08:13,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:08:13,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:13,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:13,789 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:08:13,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 01:08:14,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-27 01:08:14,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:08:14,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 70 conjunts are in the unsatisfiable core [2023-08-27 01:08:14,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:14,412 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:08:14,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:14,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:08:14,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:14,497 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:08:14,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:14,535 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:08:14,547 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:08:14,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:08:14,621 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:08:14,658 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:08:14,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:08:14,728 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:08:14,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:08:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:14,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:15,065 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2683 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2683) c_~A~0.base) (+ c_~A~0.offset 28)) 2147483649)) is different from false [2023-08-27 01:08:16,523 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:16,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 01:08:16,530 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:16,530 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 553 treesize of output 529 [2023-08-27 01:08:16,536 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-27 01:08:16,540 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 102 [2023-08-27 01:08:16,544 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-27 01:08:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144021050] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:17,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2023-08-27 01:08:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577253328] [2023-08-27 01:08:17,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-08-27 01:08:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:17,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-08-27 01:08:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3213, Unknown=15, NotChecked=114, Total=3540 [2023-08-27 01:08:17,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:08:17,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 281 transitions, 5104 flow. Second operand has 60 states, 60 states have (on average 123.16666666666667) internal successors, (7390), 60 states have internal predecessors, (7390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:17,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:17,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:08:17,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:40,440 INFO L124 PetriNetUnfolderBase]: 117560/152627 cut-off events. [2023-08-27 01:08:40,440 INFO L125 PetriNetUnfolderBase]: For 1155110/1155110 co-relation queries the response was YES. [2023-08-27 01:08:42,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806108 conditions, 152627 events. 117560/152627 cut-off events. For 1155110/1155110 co-relation queries the response was YES. Maximal size of possible extension queue 3088. Compared 852617 event pairs, 71407 based on Foata normal form. 35/145346 useless extension candidates. Maximal degree in co-relation 806031. Up to 150586 conditions per place. [2023-08-27 01:08:43,642 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 382 selfloop transitions, 44 changer transitions 0/426 dead transitions. [2023-08-27 01:08:43,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 426 transitions, 6837 flow [2023-08-27 01:08:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 01:08:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 01:08:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2594 transitions. [2023-08-27 01:08:43,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3684659090909091 [2023-08-27 01:08:43,645 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2594 transitions. [2023-08-27 01:08:43,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2594 transitions. [2023-08-27 01:08:43,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:43,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2594 transitions. [2023-08-27 01:08:43,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 129.7) internal successors, (2594), 20 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:43,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 352.0) internal successors, (7392), 21 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:43,650 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 352.0) internal successors, (7392), 21 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:43,650 INFO L175 Difference]: Start difference. First operand has 253 places, 281 transitions, 5104 flow. Second operand 20 states and 2594 transitions. [2023-08-27 01:08:43,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 426 transitions, 6837 flow [2023-08-27 01:09:30,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 426 transitions, 6753 flow, removed 31 selfloop flow, removed 8 redundant places. [2023-08-27 01:09:30,766 INFO L231 Difference]: Finished difference. Result has 273 places, 293 transitions, 5421 flow [2023-08-27 01:09:30,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=5020, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5421, PETRI_PLACES=273, PETRI_TRANSITIONS=293} [2023-08-27 01:09:30,767 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 221 predicate places. [2023-08-27 01:09:30,767 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 293 transitions, 5421 flow [2023-08-27 01:09:30,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 123.16666666666667) internal successors, (7390), 60 states have internal predecessors, (7390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:30,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:09:30,768 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:09:30,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-27 01:09:30,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-27 01:09:30,969 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:09:30,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:09:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash -604297446, now seen corresponding path program 9 times [2023-08-27 01:09:30,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:09:30,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4501060] [2023-08-27 01:09:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:30,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:09:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:32,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:09:32,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4501060] [2023-08-27 01:09:32,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4501060] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:09:32,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114192309] [2023-08-27 01:09:32,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:09:32,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:32,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:09:32,033 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:09:32,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 01:09:32,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-27 01:09:32,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:09:32,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-27 01:09:32,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:09:32,785 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:09:32,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:32,837 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:09:32,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:32,887 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:09:32,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:32,934 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:09:32,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:32,973 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 01:09:32,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:09:33,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:09:33,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:09:33,087 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:09:33,123 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:09:33,162 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:09:33,199 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 01:09:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:33,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:09:33,518 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2819 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_2819) c_~A~0.base) (+ c_~A~0.offset 28)) 2147483649)) is different from false [2023-08-27 01:09:33,740 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:33,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-27 01:09:33,750 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:33,750 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4385 treesize of output 4289 [2023-08-27 01:09:33,762 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 94 [2023-08-27 01:09:33,778 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 111 [2023-08-27 01:09:33,781 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 107 [2023-08-27 01:09:33,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 99 [2023-08-27 01:09:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:34,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114192309] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:09:34,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:09:34,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 61 [2023-08-27 01:09:34,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942118315] [2023-08-27 01:09:34,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:09:34,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-08-27 01:09:34,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:09:34,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-08-27 01:09:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3537, Unknown=30, NotChecked=120, Total=3906 [2023-08-27 01:09:34,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:09:34,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 293 transitions, 5421 flow. Second operand has 63 states, 63 states have (on average 120.17460317460318) internal successors, (7571), 63 states have internal predecessors, (7571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:34,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:09:34,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:09:34,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:10:01,033 INFO L124 PetriNetUnfolderBase]: 119243/154713 cut-off events. [2023-08-27 01:10:01,033 INFO L125 PetriNetUnfolderBase]: For 1385010/1385010 co-relation queries the response was YES. [2023-08-27 01:10:03,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823998 conditions, 154713 events. 119243/154713 cut-off events. For 1385010/1385010 co-relation queries the response was YES. Maximal size of possible extension queue 3167. Compared 864084 event pairs, 64047 based on Foata normal form. 403/147714 useless extension candidates. Maximal degree in co-relation 823912. Up to 126141 conditions per place. [2023-08-27 01:10:04,472 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 451 selfloop transitions, 51 changer transitions 0/502 dead transitions. [2023-08-27 01:10:04,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 502 transitions, 7255 flow [2023-08-27 01:10:04,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 01:10:04,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 01:10:04,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2600 transitions. [2023-08-27 01:10:04,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2023-08-27 01:10:04,475 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2600 transitions. [2023-08-27 01:10:04,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2600 transitions. [2023-08-27 01:10:04,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:10:04,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2600 transitions. [2023-08-27 01:10:04,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 130.0) internal successors, (2600), 20 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:04,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 352.0) internal successors, (7392), 21 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:04,483 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 352.0) internal successors, (7392), 21 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:04,483 INFO L175 Difference]: Start difference. First operand has 273 places, 293 transitions, 5421 flow. Second operand 20 states and 2600 transitions. [2023-08-27 01:10:04,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 502 transitions, 7255 flow [2023-08-27 01:10:50,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 502 transitions, 7133 flow, removed 48 selfloop flow, removed 9 redundant places. [2023-08-27 01:10:50,960 INFO L231 Difference]: Finished difference. Result has 284 places, 295 transitions, 5491 flow [2023-08-27 01:10:50,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=5299, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5491, PETRI_PLACES=284, PETRI_TRANSITIONS=295} [2023-08-27 01:10:50,961 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 232 predicate places. [2023-08-27 01:10:50,961 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 295 transitions, 5491 flow [2023-08-27 01:10:50,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 120.17460317460318) internal successors, (7571), 63 states have internal predecessors, (7571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:50,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:10:50,962 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:10:50,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-27 01:10:51,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 01:10:51,162 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:10:51,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:10:51,163 INFO L85 PathProgramCache]: Analyzing trace with hash 540371635, now seen corresponding path program 12 times [2023-08-27 01:10:51,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:10:51,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493488224] [2023-08-27 01:10:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:10:51,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:10:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:10:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:10:51,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:10:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493488224] [2023-08-27 01:10:51,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493488224] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:10:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173500639] [2023-08-27 01:10:51,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:10:51,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:10:51,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:10:51,486 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:10:51,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 01:10:52,723 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-27 01:10:52,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:10:52,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 01:10:52,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:10:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:10:53,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:10:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:10:53,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173500639] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:10:53,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:10:53,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 47 [2023-08-27 01:10:53,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865347012] [2023-08-27 01:10:53,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:10:53,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-27 01:10:53,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:10:53,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-27 01:10:53,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=1786, Unknown=0, NotChecked=0, Total=2352 [2023-08-27 01:10:53,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:10:53,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 295 transitions, 5491 flow. Second operand has 49 states, 49 states have (on average 135.16326530612244) internal successors, (6623), 49 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:53,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:10:53,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:10:53,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:11:21,228 INFO L124 PetriNetUnfolderBase]: 139717/181004 cut-off events. [2023-08-27 01:11:21,228 INFO L125 PetriNetUnfolderBase]: For 1326833/1326833 co-relation queries the response was YES. [2023-08-27 01:11:24,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984362 conditions, 181004 events. 139717/181004 cut-off events. For 1326833/1326833 co-relation queries the response was YES. Maximal size of possible extension queue 3421. Compared 1015982 event pairs, 36301 based on Foata normal form. 876/173262 useless extension candidates. Maximal degree in co-relation 984274. Up to 63218 conditions per place. [2023-08-27 01:11:25,438 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 380 selfloop transitions, 204 changer transitions 0/584 dead transitions. [2023-08-27 01:11:25,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 584 transitions, 8736 flow [2023-08-27 01:11:25,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 01:11:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 01:11:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3052 transitions. [2023-08-27 01:11:25,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2023-08-27 01:11:25,441 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3052 transitions. [2023-08-27 01:11:25,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3052 transitions. [2023-08-27 01:11:25,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:11:25,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3052 transitions. [2023-08-27 01:11:25,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 145.33333333333334) internal successors, (3052), 21 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:25,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 352.0) internal successors, (7744), 22 states have internal predecessors, (7744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:25,449 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 352.0) internal successors, (7744), 22 states have internal predecessors, (7744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:11:25,449 INFO L175 Difference]: Start difference. First operand has 284 places, 295 transitions, 5491 flow. Second operand 21 states and 3052 transitions. [2023-08-27 01:11:25,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 584 transitions, 8736 flow Received shutdown request... [2023-08-27 01:12:52,496 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 01:12:52,496 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 01:12:52,966 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 27 remaining) [2023-08-27 01:12:52,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-27 01:12:53,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:53,167 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-27 01:12:53,168 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 27 remaining) [2023-08-27 01:12:53,168 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 27 remaining) [2023-08-27 01:12:53,168 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 27 remaining) [2023-08-27 01:12:53,168 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 27 remaining) [2023-08-27 01:12:53,169 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 27 remaining) [2023-08-27 01:12:53,169 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 27 remaining) [2023-08-27 01:12:53,169 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 27 remaining) [2023-08-27 01:12:53,169 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 27 remaining) [2023-08-27 01:12:53,169 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 27 remaining) [2023-08-27 01:12:53,169 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 27 remaining) [2023-08-27 01:12:53,169 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (15 of 27 remaining) [2023-08-27 01:12:53,169 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 27 remaining) [2023-08-27 01:12:53,169 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 27 remaining) [2023-08-27 01:12:53,169 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 27 remaining) [2023-08-27 01:12:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 27 remaining) [2023-08-27 01:12:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 27 remaining) [2023-08-27 01:12:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 27 remaining) [2023-08-27 01:12:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 27 remaining) [2023-08-27 01:12:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 27 remaining) [2023-08-27 01:12:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 27 remaining) [2023-08-27 01:12:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 27 remaining) [2023-08-27 01:12:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 27 remaining) [2023-08-27 01:12:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 27 remaining) [2023-08-27 01:12:53,170 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 27 remaining) [2023-08-27 01:12:53,171 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 27 remaining) [2023-08-27 01:12:53,171 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 27 remaining) [2023-08-27 01:12:53,171 INFO L445 BasicCegarLoop]: Path program histogram: [12, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:12:53,175 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 01:12:53,175 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 01:12:53,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 01:12:53 BasicIcfg [2023-08-27 01:12:53,177 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 01:12:53,177 INFO L158 Benchmark]: Toolchain (without parser) took 749416.92ms. Allocated memory was 346.0MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 322.4MB in the beginning and 9.8GB in the end (delta: -9.5GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. [2023-08-27 01:12:53,178 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 346.0MB. Free memory was 322.8MB in the beginning and 322.7MB in the end (delta: 80.5kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 01:12:53,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.26ms. Allocated memory is still 346.0MB. Free memory was 322.0MB in the beginning and 310.3MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 01:12:53,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.08ms. Allocated memory is still 346.0MB. Free memory was 310.3MB in the beginning and 308.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 01:12:53,178 INFO L158 Benchmark]: Boogie Preprocessor took 42.70ms. Allocated memory is still 346.0MB. Free memory was 308.3MB in the beginning and 306.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 01:12:53,178 INFO L158 Benchmark]: RCFGBuilder took 648.46ms. Allocated memory is still 346.0MB. Free memory was 306.2MB in the beginning and 276.2MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-27 01:12:53,178 INFO L158 Benchmark]: TraceAbstraction took 748363.78ms. Allocated memory was 346.0MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 275.5MB in the beginning and 9.8GB in the end (delta: -9.5GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. [2023-08-27 01:12:53,179 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 346.0MB. Free memory was 322.8MB in the beginning and 322.7MB in the end (delta: 80.5kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 297.26ms. Allocated memory is still 346.0MB. Free memory was 322.0MB in the beginning and 310.3MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.08ms. Allocated memory is still 346.0MB. Free memory was 310.3MB in the beginning and 308.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 42.70ms. Allocated memory is still 346.0MB. Free memory was 308.3MB in the beginning and 306.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 648.46ms. Allocated memory is still 346.0MB. Free memory was 306.2MB in the beginning and 276.2MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * TraceAbstraction took 748363.78ms. Allocated memory was 346.0MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 275.5MB in the beginning and 9.8GB in the end (delta: -9.5GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.5s, 171 PlacesBefore, 52 PlacesAfterwards, 170 TransitionsBefore, 43 TransitionsAfterwards, 4200 CoEnabledTransitionPairs, 7 FixpointIterations, 75 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 165 TotalNumberOfCompositions, 5985 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4345, independent: 4255, independent conditional: 0, independent unconditional: 4255, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2237, independent: 2207, independent conditional: 0, independent unconditional: 2207, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4345, independent: 2048, independent conditional: 0, independent unconditional: 2048, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 2237, unknown conditional: 0, unknown unconditional: 2237] , Statistics on independence cache: Total cache size (in pairs): 189, Positive cache size: 177, Positive conditional cache size: 0, Positive unconditional cache size: 177, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - 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 RemoveRedundantFlow. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 234 locations, 27 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: 748.2s, OverallIterations: 41, TraceHistogramMax: 8, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 684.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.7s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 6117 SdHoareTripleChecker+Valid, 33.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6117 mSDsluCounter, 482 SdHoareTripleChecker+Invalid, 28.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2575 IncrementalHoareTripleChecker+Unchecked, 443 mSDsCounter, 838 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56010 IncrementalHoareTripleChecker+Invalid, 59425 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 838 mSolverCounterUnsat, 39 mSDtfsCounter, 56010 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1418 GetRequests, 285 SyntacticMatches, 57 SemanticMatches, 1076 ConstructedPredicates, 23 IntricatePredicates, 0 DeprecatedPredicates, 13192 ImplicationChecksByTransitivity, 32.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5491occurred in iteration=40, InterpolantAutomatonStates: 393, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 42.9s InterpolantComputationTime, 1071 NumberOfCodeBlocks, 1063 NumberOfCodeBlocksAsserted, 111 NumberOfCheckSat, 1439 ConstructedInterpolants, 133 QuantifiedInterpolants, 18490 SizeOfPredicates, 204 NumberOfNonLiveVariables, 8111 ConjunctsInSsa, 995 ConjunctsInUnsatCore, 100 InterpolantComputations, 13 PerfectInterpolantSequences, 364/2022 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