/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:38:02,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:38:02,092 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 00:38:02,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:38:02,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:38:02,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:38:02,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:38:02,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:38:02,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:38:02,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:38:02,132 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:38:02,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:38:02,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:38:02,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:38:02,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:38:02,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:38:02,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:38:02,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:38:02,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:38:02,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:38:02,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:38:02,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:38:02,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:38:02,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:38:02,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:38:02,137 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:38:02,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:38:02,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:38:02,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:38:02,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:38:02,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:38:02,139 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:38:02,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:38:02,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:38:02,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:38:02,140 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:38:02,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:38:02,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:38:02,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:38:02,439 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:38:02,439 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:38:02,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2023-08-27 00:38:03,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:38:03,856 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:38:03,856 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2023-08-27 00:38:03,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4d13088/06f5db2e273d42ff9ddfbe3e93fd4e8e/FLAG072b9a20b [2023-08-27 00:38:03,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4d13088/06f5db2e273d42ff9ddfbe3e93fd4e8e [2023-08-27 00:38:03,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:38:03,879 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:38:03,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:38:03,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:38:03,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:38:03,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:38:03" (1/1) ... [2023-08-27 00:38:03,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6abc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:03, skipping insertion in model container [2023-08-27 00:38:03,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:38:03" (1/1) ... [2023-08-27 00:38:03,906 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:38:04,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:38:04,118 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:38:04,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:38:04,176 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:38:04,176 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:38:04,182 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:38:04,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04 WrapperNode [2023-08-27 00:38:04,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:38:04,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:38:04,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:38:04,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:38:04,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (1/1) ... [2023-08-27 00:38:04,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (1/1) ... [2023-08-27 00:38:04,250 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 362 [2023-08-27 00:38:04,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:38:04,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:38:04,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:38:04,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:38:04,261 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (1/1) ... [2023-08-27 00:38:04,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (1/1) ... [2023-08-27 00:38:04,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (1/1) ... [2023-08-27 00:38:04,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (1/1) ... [2023-08-27 00:38:04,299 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (1/1) ... [2023-08-27 00:38:04,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (1/1) ... [2023-08-27 00:38:04,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (1/1) ... [2023-08-27 00:38:04,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (1/1) ... [2023-08-27 00:38:04,309 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:38:04,310 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:38:04,310 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:38:04,310 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:38:04,311 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (1/1) ... [2023-08-27 00:38:04,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:38:04,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:04,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 00:38:04,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 00:38:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:38:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:38:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:38:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:38:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:38:04,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:38:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:38:04,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:38:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:38:04,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:38:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:38:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:38:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:38:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 00:38:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:38:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:38:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:38:04,387 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 00:38:04,529 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:38:04,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:38:04,985 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:38:05,206 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:38:05,207 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 00:38:05,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:38:05 BoogieIcfgContainer [2023-08-27 00:38:05,210 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:38:05,212 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:38:05,212 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:38:05,215 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:38:05,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:38:03" (1/3) ... [2023-08-27 00:38:05,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619558f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:38:05, skipping insertion in model container [2023-08-27 00:38:05,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:38:04" (2/3) ... [2023-08-27 00:38:05,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619558f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:38:05, skipping insertion in model container [2023-08-27 00:38:05,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:38:05" (3/3) ... [2023-08-27 00:38:05,218 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2023-08-27 00:38:05,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:38:05,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-08-27 00:38:05,233 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:38:05,384 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 00:38:05,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 305 transitions, 634 flow [2023-08-27 00:38:05,499 INFO L124 PetriNetUnfolderBase]: 22/302 cut-off events. [2023-08-27 00:38:05,499 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:38:05,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 302 events. 22/302 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 359 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 253. Up to 3 conditions per place. [2023-08-27 00:38:05,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 305 transitions, 634 flow [2023-08-27 00:38:05,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 291 transitions, 600 flow [2023-08-27 00:38:05,525 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:38:05,536 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 291 transitions, 600 flow [2023-08-27 00:38:05,542 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 291 transitions, 600 flow [2023-08-27 00:38:05,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 291 transitions, 600 flow [2023-08-27 00:38:05,613 INFO L124 PetriNetUnfolderBase]: 22/291 cut-off events. [2023-08-27 00:38:05,614 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 00:38:05,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 291 events. 22/291 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 359 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 253. Up to 3 conditions per place. [2023-08-27 00:38:05,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 5314 [2023-08-27 00:38:17,091 INFO L134 LiptonReduction]: Checked pairs total: 15388 [2023-08-27 00:38:17,091 INFO L136 LiptonReduction]: Total number of compositions: 307 [2023-08-27 00:38:17,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:38:17,109 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;@4be219f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:38:17,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-08-27 00:38:17,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:38:17,112 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 00:38:17,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:38:17,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:17,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 00:38:17,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:17,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:17,117 INFO L85 PathProgramCache]: Analyzing trace with hash 45338, now seen corresponding path program 1 times [2023-08-27 00:38:17,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:17,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911252836] [2023-08-27 00:38:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:17,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:17,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:17,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911252836] [2023-08-27 00:38:17,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911252836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:17,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:38:17,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:38:17,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3144490] [2023-08-27 00:38:17,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:17,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:38:17,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:17,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:38:17,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:38:17,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 612 [2023-08-27 00:38:17,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:17,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:17,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 612 [2023-08-27 00:38:17,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:18,498 INFO L124 PetriNetUnfolderBase]: 6389/9066 cut-off events. [2023-08-27 00:38:18,498 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2023-08-27 00:38:18,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18492 conditions, 9066 events. 6389/9066 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 47351 event pairs, 5657 based on Foata normal form. 0/3750 useless extension candidates. Maximal degree in co-relation 17050. Up to 9062 conditions per place. [2023-08-27 00:38:18,544 INFO L140 encePairwiseOnDemand]: 590/612 looper letters, 55 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2023-08-27 00:38:18,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 266 flow [2023-08-27 00:38:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:38:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:38:18,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2023-08-27 00:38:18,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226579520697168 [2023-08-27 00:38:18,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2023-08-27 00:38:18,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2023-08-27 00:38:18,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:18,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2023-08-27 00:38:18,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:18,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:18,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:18,580 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 148 flow. Second operand 3 states and 776 transitions. [2023-08-27 00:38:18,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 266 flow [2023-08-27 00:38:18,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 254 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 00:38:18,609 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 182 flow [2023-08-27 00:38:18,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2023-08-27 00:38:18,613 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2023-08-27 00:38:18,614 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 182 flow [2023-08-27 00:38:18,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:18,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:18,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:38:18,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:38:18,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:18,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1406889, now seen corresponding path program 1 times [2023-08-27 00:38:18,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:18,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841232373] [2023-08-27 00:38:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:18,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:18,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841232373] [2023-08-27 00:38:18,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841232373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:18,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:38:18,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:38:18,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204993910] [2023-08-27 00:38:18,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:18,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:38:18,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:18,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:38:18,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:38:18,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 612 [2023-08-27 00:38:18,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:18,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:18,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 612 [2023-08-27 00:38:18,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:19,644 INFO L124 PetriNetUnfolderBase]: 6389/9063 cut-off events. [2023-08-27 00:38:19,645 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-27 00:38:19,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18275 conditions, 9063 events. 6389/9063 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 47349 event pairs, 5657 based on Foata normal form. 0/3754 useless extension candidates. Maximal degree in co-relation 18216. Up to 9050 conditions per place. [2023-08-27 00:38:19,702 INFO L140 encePairwiseOnDemand]: 607/612 looper letters, 56 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-27 00:38:19,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 288 flow [2023-08-27 00:38:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:38:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:38:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 755 transitions. [2023-08-27 00:38:19,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41122004357298475 [2023-08-27 00:38:19,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 755 transitions. [2023-08-27 00:38:19,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 755 transitions. [2023-08-27 00:38:19,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:19,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 755 transitions. [2023-08-27 00:38:19,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:19,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:19,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:19,712 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 182 flow. Second operand 3 states and 755 transitions. [2023-08-27 00:38:19,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 288 flow [2023-08-27 00:38:19,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:38:19,715 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 162 flow [2023-08-27 00:38:19,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2023-08-27 00:38:19,716 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -12 predicate places. [2023-08-27 00:38:19,716 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 162 flow [2023-08-27 00:38:19,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:19,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:19,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 00:38:19,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:38:19,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:19,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1406890, now seen corresponding path program 1 times [2023-08-27 00:38:19,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:19,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820624121] [2023-08-27 00:38:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:19,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:19,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:19,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820624121] [2023-08-27 00:38:19,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820624121] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:19,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215222958] [2023-08-27 00:38:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:19,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:19,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:19,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:19,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 00:38:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:19,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:38:19,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:19,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:38:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:20,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215222958] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:38:20,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:38:20,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:38:20,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306449217] [2023-08-27 00:38:20,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:38:20,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:38:20,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:38:20,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:38:20,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 612 [2023-08-27 00:38:20,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 234.14285714285714) internal successors, (1639), 7 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:20,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:20,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 612 [2023-08-27 00:38:20,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:20,976 INFO L124 PetriNetUnfolderBase]: 6398/9081 cut-off events. [2023-08-27 00:38:20,977 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-27 00:38:20,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18328 conditions, 9081 events. 6398/9081 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 47391 event pairs, 5657 based on Foata normal form. 0/3764 useless extension candidates. Maximal degree in co-relation 18216. Up to 9062 conditions per place. [2023-08-27 00:38:21,017 INFO L140 encePairwiseOnDemand]: 602/612 looper letters, 52 selfloop transitions, 25 changer transitions 0/77 dead transitions. [2023-08-27 00:38:21,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 394 flow [2023-08-27 00:38:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:38:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:38:21,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1484 transitions. [2023-08-27 00:38:21,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40413943355119825 [2023-08-27 00:38:21,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1484 transitions. [2023-08-27 00:38:21,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1484 transitions. [2023-08-27 00:38:21,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:21,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1484 transitions. [2023-08-27 00:38:21,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.33333333333334) internal successors, (1484), 6 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:21,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 612.0) internal successors, (4284), 7 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:21,034 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 612.0) internal successors, (4284), 7 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:21,034 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 162 flow. Second operand 6 states and 1484 transitions. [2023-08-27 00:38:21,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 394 flow [2023-08-27 00:38:21,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:38:21,036 INFO L231 Difference]: Finished difference. Result has 61 places, 77 transitions, 331 flow [2023-08-27 00:38:21,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=61, PETRI_TRANSITIONS=77} [2023-08-27 00:38:21,037 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -6 predicate places. [2023-08-27 00:38:21,037 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 77 transitions, 331 flow [2023-08-27 00:38:21,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 234.14285714285714) internal successors, (1639), 7 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:21,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:21,038 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 00:38:21,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:21,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:21,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:21,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:21,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1035641637, now seen corresponding path program 2 times [2023-08-27 00:38:21,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:21,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237550242] [2023-08-27 00:38:21,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:21,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:21,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:21,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237550242] [2023-08-27 00:38:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237550242] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:21,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105686408] [2023-08-27 00:38:21,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:38:21,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:21,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:21,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:21,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 00:38:21,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:38:21,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:38:21,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:38:21,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 00:38:21,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:38:21,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105686408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:21,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:38:21,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 00:38:21,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293973695] [2023-08-27 00:38:21,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:21,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:38:21,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:21,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:38:21,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:38:21,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 612 [2023-08-27 00:38:21,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 77 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:21,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:21,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 612 [2023-08-27 00:38:21,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:22,434 INFO L124 PetriNetUnfolderBase]: 6398/9080 cut-off events. [2023-08-27 00:38:22,435 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-08-27 00:38:22,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18375 conditions, 9080 events. 6398/9080 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 47401 event pairs, 5657 based on Foata normal form. 1/3771 useless extension candidates. Maximal degree in co-relation 18287. Up to 9075 conditions per place. [2023-08-27 00:38:22,474 INFO L140 encePairwiseOnDemand]: 609/612 looper letters, 70 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-27 00:38:22,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 473 flow [2023-08-27 00:38:22,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:38:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:38:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-08-27 00:38:22,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144880174291939 [2023-08-27 00:38:22,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-08-27 00:38:22,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-08-27 00:38:22,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:22,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-08-27 00:38:22,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:22,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:22,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:22,484 INFO L175 Difference]: Start difference. First operand has 61 places, 77 transitions, 331 flow. Second operand 3 states and 761 transitions. [2023-08-27 00:38:22,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 473 flow [2023-08-27 00:38:22,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 76 transitions, 436 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-27 00:38:22,487 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 296 flow [2023-08-27 00:38:22,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2023-08-27 00:38:22,488 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -6 predicate places. [2023-08-27 00:38:22,488 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 296 flow [2023-08-27 00:38:22,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:22,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:22,489 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 00:38:22,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:22,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-27 00:38:22,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:22,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1029509264, now seen corresponding path program 1 times [2023-08-27 00:38:22,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:22,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964415486] [2023-08-27 00:38:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:22,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:22,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964415486] [2023-08-27 00:38:22,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964415486] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:22,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843352799] [2023-08-27 00:38:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:22,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:22,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:22,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:22,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 00:38:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:22,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:38:22,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:22,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:38:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:22,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843352799] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:38:22,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:38:22,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 00:38:22,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723962367] [2023-08-27 00:38:22,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:38:22,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:38:22,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:22,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:38:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:38:22,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 612 [2023-08-27 00:38:22,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 296 flow. Second operand has 13 states, 13 states have (on average 234.15384615384616) internal successors, (3044), 13 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:22,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:22,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 612 [2023-08-27 00:38:22,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:23,901 INFO L124 PetriNetUnfolderBase]: 6416/9116 cut-off events. [2023-08-27 00:38:23,901 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-08-27 00:38:23,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18499 conditions, 9116 events. 6416/9116 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 47644 event pairs, 5657 based on Foata normal form. 12/3809 useless extension candidates. Maximal degree in co-relation 18396. Up to 9067 conditions per place. [2023-08-27 00:38:23,938 INFO L140 encePairwiseOnDemand]: 603/612 looper letters, 51 selfloop transitions, 61 changer transitions 0/112 dead transitions. [2023-08-27 00:38:23,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 112 transitions, 736 flow [2023-08-27 00:38:23,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:38:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:38:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2920 transitions. [2023-08-27 00:38:23,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39760348583877997 [2023-08-27 00:38:23,946 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2920 transitions. [2023-08-27 00:38:23,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2920 transitions. [2023-08-27 00:38:23,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:23,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2920 transitions. [2023-08-27 00:38:23,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 243.33333333333334) internal successors, (2920), 12 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:23,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 612.0) internal successors, (7956), 13 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:23,964 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 612.0) internal successors, (7956), 13 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:23,964 INFO L175 Difference]: Start difference. First operand has 61 places, 76 transitions, 296 flow. Second operand 12 states and 2920 transitions. [2023-08-27 00:38:23,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 112 transitions, 736 flow [2023-08-27 00:38:23,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 112 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:38:23,968 INFO L231 Difference]: Finished difference. Result has 76 places, 112 transitions, 696 flow [2023-08-27 00:38:23,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=696, PETRI_PLACES=76, PETRI_TRANSITIONS=112} [2023-08-27 00:38:23,969 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2023-08-27 00:38:23,969 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 112 transitions, 696 flow [2023-08-27 00:38:23,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 234.15384615384616) internal successors, (3044), 13 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:23,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:23,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:23,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:24,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:24,175 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:24,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:24,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1006754435, now seen corresponding path program 1 times [2023-08-27 00:38:24,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:24,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313602367] [2023-08-27 00:38:24,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:24,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:24,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:24,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313602367] [2023-08-27 00:38:24,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313602367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:24,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:38:24,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:38:24,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070522355] [2023-08-27 00:38:24,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:24,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:38:24,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:38:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:38:24,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 612 [2023-08-27 00:38:24,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 112 transitions, 696 flow. Second operand has 4 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:24,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:24,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 612 [2023-08-27 00:38:24,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:25,192 INFO L124 PetriNetUnfolderBase]: 6568/9385 cut-off events. [2023-08-27 00:38:25,192 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2023-08-27 00:38:25,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19318 conditions, 9385 events. 6568/9385 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 49424 event pairs, 5780 based on Foata normal form. 90/4105 useless extension candidates. Maximal degree in co-relation 19122. Up to 9115 conditions per place. [2023-08-27 00:38:25,226 INFO L140 encePairwiseOnDemand]: 603/612 looper letters, 172 selfloop transitions, 3 changer transitions 1/176 dead transitions. [2023-08-27 00:38:25,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 176 transitions, 1502 flow [2023-08-27 00:38:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:38:25,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:38:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 956 transitions. [2023-08-27 00:38:25,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39052287581699346 [2023-08-27 00:38:25,230 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 956 transitions. [2023-08-27 00:38:25,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 956 transitions. [2023-08-27 00:38:25,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:25,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 956 transitions. [2023-08-27 00:38:25,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:25,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 612.0) internal successors, (3060), 5 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:25,236 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 612.0) internal successors, (3060), 5 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:25,236 INFO L175 Difference]: Start difference. First operand has 76 places, 112 transitions, 696 flow. Second operand 4 states and 956 transitions. [2023-08-27 00:38:25,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 176 transitions, 1502 flow [2023-08-27 00:38:25,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 176 transitions, 1202 flow, removed 91 selfloop flow, removed 5 redundant places. [2023-08-27 00:38:25,242 INFO L231 Difference]: Finished difference. Result has 75 places, 112 transitions, 537 flow [2023-08-27 00:38:25,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=537, PETRI_PLACES=75, PETRI_TRANSITIONS=112} [2023-08-27 00:38:25,243 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2023-08-27 00:38:25,243 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 112 transitions, 537 flow [2023-08-27 00:38:25,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:25,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:25,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:25,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 00:38:25,244 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:25,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:25,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2080759730, now seen corresponding path program 1 times [2023-08-27 00:38:25,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:25,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293058132] [2023-08-27 00:38:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:25,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:25,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:25,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293058132] [2023-08-27 00:38:25,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293058132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:25,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606632274] [2023-08-27 00:38:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:25,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:25,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:25,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:25,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 00:38:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:25,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:38:25,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:25,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:38:25,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606632274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:25,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:38:25,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 00:38:25,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311903628] [2023-08-27 00:38:25,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:25,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:38:25,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:25,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:38:25,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 00:38:25,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 612 [2023-08-27 00:38:25,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 112 transitions, 537 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:25,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:25,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 612 [2023-08-27 00:38:25,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:26,050 INFO L124 PetriNetUnfolderBase]: 4958/7113 cut-off events. [2023-08-27 00:38:26,050 INFO L125 PetriNetUnfolderBase]: For 635/635 co-relation queries the response was YES. [2023-08-27 00:38:26,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15215 conditions, 7113 events. 4958/7113 cut-off events. For 635/635 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 35933 event pairs, 4296 based on Foata normal form. 0/3268 useless extension candidates. Maximal degree in co-relation 15055. Up to 7113 conditions per place. [2023-08-27 00:38:26,079 INFO L140 encePairwiseOnDemand]: 608/612 looper letters, 108 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2023-08-27 00:38:26,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 109 transitions, 743 flow [2023-08-27 00:38:26,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:38:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:38:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2023-08-27 00:38:26,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433551198257081 [2023-08-27 00:38:26,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2023-08-27 00:38:26,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2023-08-27 00:38:26,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:26,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2023-08-27 00:38:26,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:26,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:26,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:26,087 INFO L175 Difference]: Start difference. First operand has 75 places, 112 transitions, 537 flow. Second operand 3 states and 814 transitions. [2023-08-27 00:38:26,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 109 transitions, 743 flow [2023-08-27 00:38:26,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 109 transitions, 737 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 00:38:26,091 INFO L231 Difference]: Finished difference. Result has 73 places, 109 transitions, 521 flow [2023-08-27 00:38:26,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=521, PETRI_PLACES=73, PETRI_TRANSITIONS=109} [2023-08-27 00:38:26,091 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2023-08-27 00:38:26,091 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 109 transitions, 521 flow [2023-08-27 00:38:26,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:26,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:26,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:26,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:26,297 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 00:38:26,297 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:26,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:26,297 INFO L85 PathProgramCache]: Analyzing trace with hash -79044560, now seen corresponding path program 1 times [2023-08-27 00:38:26,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:26,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044083480] [2023-08-27 00:38:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:26,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:26,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:26,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044083480] [2023-08-27 00:38:26,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044083480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:26,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:38:26,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:38:26,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916406364] [2023-08-27 00:38:26,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:26,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:38:26,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:26,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:38:26,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:38:26,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 612 [2023-08-27 00:38:26,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 109 transitions, 521 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:26,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:26,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 612 [2023-08-27 00:38:26,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:27,394 INFO L124 PetriNetUnfolderBase]: 8266/11823 cut-off events. [2023-08-27 00:38:27,394 INFO L125 PetriNetUnfolderBase]: For 744/744 co-relation queries the response was YES. [2023-08-27 00:38:27,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25245 conditions, 11823 events. 8266/11823 cut-off events. For 744/744 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 67382 event pairs, 4212 based on Foata normal form. 0/5370 useless extension candidates. Maximal degree in co-relation 25225. Up to 6980 conditions per place. [2023-08-27 00:38:27,445 INFO L140 encePairwiseOnDemand]: 608/612 looper letters, 143 selfloop transitions, 2 changer transitions 0/145 dead transitions. [2023-08-27 00:38:27,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 145 transitions, 894 flow [2023-08-27 00:38:27,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:38:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:38:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 843 transitions. [2023-08-27 00:38:27,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591503267973856 [2023-08-27 00:38:27,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 843 transitions. [2023-08-27 00:38:27,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 843 transitions. [2023-08-27 00:38:27,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:27,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 843 transitions. [2023-08-27 00:38:27,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:27,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:27,454 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:27,454 INFO L175 Difference]: Start difference. First operand has 73 places, 109 transitions, 521 flow. Second operand 3 states and 843 transitions. [2023-08-27 00:38:27,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 145 transitions, 894 flow [2023-08-27 00:38:27,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 145 transitions, 893 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:38:27,459 INFO L231 Difference]: Finished difference. Result has 75 places, 110 transitions, 534 flow [2023-08-27 00:38:27,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=75, PETRI_TRANSITIONS=110} [2023-08-27 00:38:27,459 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2023-08-27 00:38:27,460 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 110 transitions, 534 flow [2023-08-27 00:38:27,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:27,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:27,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:27,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 00:38:27,460 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:27,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:27,461 INFO L85 PathProgramCache]: Analyzing trace with hash -79044865, now seen corresponding path program 1 times [2023-08-27 00:38:27,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:27,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150027453] [2023-08-27 00:38:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:27,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:27,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:27,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150027453] [2023-08-27 00:38:27,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150027453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:27,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:38:27,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:38:27,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457823691] [2023-08-27 00:38:27,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:27,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:38:27,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:27,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:38:27,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:38:27,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 612 [2023-08-27 00:38:27,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 110 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:27,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:27,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 612 [2023-08-27 00:38:27,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:28,536 INFO L124 PetriNetUnfolderBase]: 8849/12568 cut-off events. [2023-08-27 00:38:28,536 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2023-08-27 00:38:28,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27968 conditions, 12568 events. 8849/12568 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 67487 event pairs, 2540 based on Foata normal form. 292/6181 useless extension candidates. Maximal degree in co-relation 27947. Up to 10134 conditions per place. [2023-08-27 00:38:28,645 INFO L140 encePairwiseOnDemand]: 603/612 looper letters, 131 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2023-08-27 00:38:28,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 136 transitions, 869 flow [2023-08-27 00:38:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:38:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:38:28,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2023-08-27 00:38:28,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564270152505447 [2023-08-27 00:38:28,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2023-08-27 00:38:28,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2023-08-27 00:38:28,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:28,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2023-08-27 00:38:28,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:28,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:28,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:28,652 INFO L175 Difference]: Start difference. First operand has 75 places, 110 transitions, 534 flow. Second operand 3 states and 838 transitions. [2023-08-27 00:38:28,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 136 transitions, 869 flow [2023-08-27 00:38:28,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 136 transitions, 866 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:38:28,659 INFO L231 Difference]: Finished difference. Result has 77 places, 114 transitions, 571 flow [2023-08-27 00:38:28,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=77, PETRI_TRANSITIONS=114} [2023-08-27 00:38:28,659 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2023-08-27 00:38:28,660 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 114 transitions, 571 flow [2023-08-27 00:38:28,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:28,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:28,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:28,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 00:38:28,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:28,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:28,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1414771674, now seen corresponding path program 1 times [2023-08-27 00:38:28,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:28,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110916995] [2023-08-27 00:38:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:28,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:28,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110916995] [2023-08-27 00:38:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110916995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:28,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:38:28,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:38:28,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133743293] [2023-08-27 00:38:28,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:28,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:38:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:38:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:38:28,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 612 [2023-08-27 00:38:28,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 114 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:28,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:28,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 612 [2023-08-27 00:38:28,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:29,556 INFO L124 PetriNetUnfolderBase]: 7283/10526 cut-off events. [2023-08-27 00:38:29,556 INFO L125 PetriNetUnfolderBase]: For 1486/1486 co-relation queries the response was YES. [2023-08-27 00:38:29,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25798 conditions, 10526 events. 7283/10526 cut-off events. For 1486/1486 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 57707 event pairs, 2126 based on Foata normal form. 68/4953 useless extension candidates. Maximal degree in co-relation 25775. Up to 9678 conditions per place. [2023-08-27 00:38:29,593 INFO L140 encePairwiseOnDemand]: 608/612 looper letters, 133 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2023-08-27 00:38:29,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 136 transitions, 913 flow [2023-08-27 00:38:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:38:29,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:38:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 827 transitions. [2023-08-27 00:38:29,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504357298474945 [2023-08-27 00:38:29,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 827 transitions. [2023-08-27 00:38:29,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 827 transitions. [2023-08-27 00:38:29,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:29,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 827 transitions. [2023-08-27 00:38:29,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:29,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:29,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:29,600 INFO L175 Difference]: Start difference. First operand has 77 places, 114 transitions, 571 flow. Second operand 3 states and 827 transitions. [2023-08-27 00:38:29,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 136 transitions, 913 flow [2023-08-27 00:38:29,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 136 transitions, 904 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:38:29,608 INFO L231 Difference]: Finished difference. Result has 79 places, 116 transitions, 589 flow [2023-08-27 00:38:29,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=589, PETRI_PLACES=79, PETRI_TRANSITIONS=116} [2023-08-27 00:38:29,609 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2023-08-27 00:38:29,609 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 116 transitions, 589 flow [2023-08-27 00:38:29,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:29,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:29,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:29,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 00:38:29,610 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:29,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:29,610 INFO L85 PathProgramCache]: Analyzing trace with hash 496559535, now seen corresponding path program 1 times [2023-08-27 00:38:29,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:29,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188352741] [2023-08-27 00:38:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:29,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:29,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:29,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188352741] [2023-08-27 00:38:29,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188352741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:29,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:38:29,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:38:29,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483445975] [2023-08-27 00:38:29,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:29,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:38:29,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:29,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:38:29,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:38:29,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 612 [2023-08-27 00:38:29,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 116 transitions, 589 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:29,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:29,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 612 [2023-08-27 00:38:29,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:30,729 INFO L124 PetriNetUnfolderBase]: 7775/11372 cut-off events. [2023-08-27 00:38:30,729 INFO L125 PetriNetUnfolderBase]: For 2652/2652 co-relation queries the response was YES. [2023-08-27 00:38:30,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28390 conditions, 11372 events. 7775/11372 cut-off events. For 2652/2652 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 63067 event pairs, 6057 based on Foata normal form. 72/5541 useless extension candidates. Maximal degree in co-relation 28365. Up to 10503 conditions per place. [2023-08-27 00:38:30,780 INFO L140 encePairwiseOnDemand]: 602/612 looper letters, 128 selfloop transitions, 13 changer transitions 0/141 dead transitions. [2023-08-27 00:38:30,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 141 transitions, 942 flow [2023-08-27 00:38:30,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:38:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:38:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 955 transitions. [2023-08-27 00:38:30,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901143790849673 [2023-08-27 00:38:30,783 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 955 transitions. [2023-08-27 00:38:30,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 955 transitions. [2023-08-27 00:38:30,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:30,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 955 transitions. [2023-08-27 00:38:30,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:30,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 612.0) internal successors, (3060), 5 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:30,787 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 612.0) internal successors, (3060), 5 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:30,788 INFO L175 Difference]: Start difference. First operand has 79 places, 116 transitions, 589 flow. Second operand 4 states and 955 transitions. [2023-08-27 00:38:30,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 141 transitions, 942 flow [2023-08-27 00:38:30,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 141 transitions, 929 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 00:38:30,797 INFO L231 Difference]: Finished difference. Result has 82 places, 116 transitions, 621 flow [2023-08-27 00:38:30,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=621, PETRI_PLACES=82, PETRI_TRANSITIONS=116} [2023-08-27 00:38:30,797 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2023-08-27 00:38:30,798 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 116 transitions, 621 flow [2023-08-27 00:38:30,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:30,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:30,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:30,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 00:38:30,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:30,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:30,799 INFO L85 PathProgramCache]: Analyzing trace with hash 496559420, now seen corresponding path program 1 times [2023-08-27 00:38:30,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:30,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715181431] [2023-08-27 00:38:30,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:30,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:30,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:30,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715181431] [2023-08-27 00:38:30,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715181431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:30,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:38:30,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:38:30,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914937753] [2023-08-27 00:38:30,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:30,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:38:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:30,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:38:30,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:38:30,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 612 [2023-08-27 00:38:30,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 116 transitions, 621 flow. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:30,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:30,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 612 [2023-08-27 00:38:30,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:31,676 INFO L124 PetriNetUnfolderBase]: 6742/9931 cut-off events. [2023-08-27 00:38:31,677 INFO L125 PetriNetUnfolderBase]: For 1597/1597 co-relation queries the response was YES. [2023-08-27 00:38:31,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24927 conditions, 9931 events. 6742/9931 cut-off events. For 1597/1597 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 54588 event pairs, 2598 based on Foata normal form. 156/4976 useless extension candidates. Maximal degree in co-relation 24901. Up to 9157 conditions per place. [2023-08-27 00:38:31,717 INFO L140 encePairwiseOnDemand]: 602/612 looper letters, 125 selfloop transitions, 5 changer transitions 0/130 dead transitions. [2023-08-27 00:38:31,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 130 transitions, 913 flow [2023-08-27 00:38:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:38:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:38:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2023-08-27 00:38:31,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4466230936819172 [2023-08-27 00:38:31,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2023-08-27 00:38:31,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2023-08-27 00:38:31,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:31,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2023-08-27 00:38:31,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:31,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:31,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:31,722 INFO L175 Difference]: Start difference. First operand has 82 places, 116 transitions, 621 flow. Second operand 3 states and 820 transitions. [2023-08-27 00:38:31,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 130 transitions, 913 flow [2023-08-27 00:38:31,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 130 transitions, 899 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 00:38:31,730 INFO L231 Difference]: Finished difference. Result has 84 places, 120 transitions, 648 flow [2023-08-27 00:38:31,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=84, PETRI_TRANSITIONS=120} [2023-08-27 00:38:31,731 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2023-08-27 00:38:31,731 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 120 transitions, 648 flow [2023-08-27 00:38:31,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:31,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:31,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:31,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 00:38:31,731 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:31,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:31,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1301076197, now seen corresponding path program 1 times [2023-08-27 00:38:31,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:31,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049872953] [2023-08-27 00:38:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:31,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:31,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:31,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049872953] [2023-08-27 00:38:31,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049872953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:31,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:38:31,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:38:31,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855834732] [2023-08-27 00:38:31,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:31,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:38:31,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:31,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:38:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:38:31,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 612 [2023-08-27 00:38:31,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 120 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:31,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:31,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 612 [2023-08-27 00:38:31,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:32,700 INFO L124 PetriNetUnfolderBase]: 7135/10668 cut-off events. [2023-08-27 00:38:32,700 INFO L125 PetriNetUnfolderBase]: For 2702/2702 co-relation queries the response was YES. [2023-08-27 00:38:32,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30243 conditions, 10668 events. 7135/10668 cut-off events. For 2702/2702 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 61979 event pairs, 4662 based on Foata normal form. 0/5615 useless extension candidates. Maximal degree in co-relation 30215. Up to 9384 conditions per place. [2023-08-27 00:38:32,741 INFO L140 encePairwiseOnDemand]: 608/612 looper letters, 151 selfloop transitions, 3 changer transitions 0/154 dead transitions. [2023-08-27 00:38:32,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 154 transitions, 1095 flow [2023-08-27 00:38:32,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:38:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:38:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 834 transitions. [2023-08-27 00:38:32,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542483660130719 [2023-08-27 00:38:32,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 834 transitions. [2023-08-27 00:38:32,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 834 transitions. [2023-08-27 00:38:32,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:32,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 834 transitions. [2023-08-27 00:38:32,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:32,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:32,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 612.0) internal successors, (2448), 4 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:32,748 INFO L175 Difference]: Start difference. First operand has 84 places, 120 transitions, 648 flow. Second operand 3 states and 834 transitions. [2023-08-27 00:38:32,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 154 transitions, 1095 flow [2023-08-27 00:38:32,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 154 transitions, 1091 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:38:32,756 INFO L231 Difference]: Finished difference. Result has 85 places, 119 transitions, 645 flow [2023-08-27 00:38:32,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=645, PETRI_PLACES=85, PETRI_TRANSITIONS=119} [2023-08-27 00:38:32,757 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2023-08-27 00:38:32,757 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 119 transitions, 645 flow [2023-08-27 00:38:32,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:32,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:32,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:32,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 00:38:32,757 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:32,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:32,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1301076095, now seen corresponding path program 1 times [2023-08-27 00:38:32,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:32,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836614910] [2023-08-27 00:38:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:32,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:32,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:32,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836614910] [2023-08-27 00:38:32,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836614910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:32,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:38:32,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 00:38:32,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081299824] [2023-08-27 00:38:32,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:32,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:38:32,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:32,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:38:32,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 00:38:32,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 612 [2023-08-27 00:38:32,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 119 transitions, 645 flow. Second operand has 4 states, 4 states have (on average 221.25) internal successors, (885), 4 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:32,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:32,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 612 [2023-08-27 00:38:32,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:33,811 INFO L124 PetriNetUnfolderBase]: 7393/11170 cut-off events. [2023-08-27 00:38:33,811 INFO L125 PetriNetUnfolderBase]: For 3188/3188 co-relation queries the response was YES. [2023-08-27 00:38:33,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31727 conditions, 11170 events. 7393/11170 cut-off events. For 3188/3188 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 64813 event pairs, 5377 based on Foata normal form. 96/6213 useless extension candidates. Maximal degree in co-relation 31699. Up to 10656 conditions per place. [2023-08-27 00:38:33,853 INFO L140 encePairwiseOnDemand]: 601/612 looper letters, 117 selfloop transitions, 14 changer transitions 25/156 dead transitions. [2023-08-27 00:38:33,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 156 transitions, 1148 flow [2023-08-27 00:38:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:38:33,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:38:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1166 transitions. [2023-08-27 00:38:33,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3810457516339869 [2023-08-27 00:38:33,856 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1166 transitions. [2023-08-27 00:38:33,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1166 transitions. [2023-08-27 00:38:33,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:33,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1166 transitions. [2023-08-27 00:38:33,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.2) internal successors, (1166), 5 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:33,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 612.0) internal successors, (3672), 6 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:33,861 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 612.0) internal successors, (3672), 6 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:33,861 INFO L175 Difference]: Start difference. First operand has 85 places, 119 transitions, 645 flow. Second operand 5 states and 1166 transitions. [2023-08-27 00:38:33,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 156 transitions, 1148 flow [2023-08-27 00:38:33,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 156 transitions, 1144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:38:33,871 INFO L231 Difference]: Finished difference. Result has 90 places, 120 transitions, 694 flow [2023-08-27 00:38:33,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=694, PETRI_PLACES=90, PETRI_TRANSITIONS=120} [2023-08-27 00:38:33,872 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2023-08-27 00:38:33,872 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 120 transitions, 694 flow [2023-08-27 00:38:33,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 221.25) internal successors, (885), 4 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:33,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:33,872 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-27 00:38:33,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 00:38:33,873 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:33,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:33,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1781421232, now seen corresponding path program 2 times [2023-08-27 00:38:33,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:33,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977565958] [2023-08-27 00:38:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:33,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:34,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977565958] [2023-08-27 00:38:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977565958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052499960] [2023-08-27 00:38:34,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:38:34,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:34,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:34,035 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:34,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 00:38:34,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:38:34,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:38:34,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:38:34,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 00:38:34,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:38:34,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052499960] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:34,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:38:34,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-27 00:38:34,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017460552] [2023-08-27 00:38:34,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:34,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:38:34,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:34,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:38:34,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-27 00:38:34,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 612 [2023-08-27 00:38:34,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 120 transitions, 694 flow. Second operand has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:34,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:34,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 612 [2023-08-27 00:38:34,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:34,990 INFO L124 PetriNetUnfolderBase]: 5774/8719 cut-off events. [2023-08-27 00:38:34,991 INFO L125 PetriNetUnfolderBase]: For 2955/2955 co-relation queries the response was YES. [2023-08-27 00:38:35,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25890 conditions, 8719 events. 5774/8719 cut-off events. For 2955/2955 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 48447 event pairs, 3996 based on Foata normal form. 2/5031 useless extension candidates. Maximal degree in co-relation 25860. Up to 8674 conditions per place. [2023-08-27 00:38:35,022 INFO L140 encePairwiseOnDemand]: 607/612 looper letters, 105 selfloop transitions, 12 changer transitions 0/117 dead transitions. [2023-08-27 00:38:35,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 117 transitions, 898 flow [2023-08-27 00:38:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:38:35,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:38:35,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 981 transitions. [2023-08-27 00:38:35,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007352941176471 [2023-08-27 00:38:35,025 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 981 transitions. [2023-08-27 00:38:35,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 981 transitions. [2023-08-27 00:38:35,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:35,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 981 transitions. [2023-08-27 00:38:35,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 245.25) internal successors, (981), 4 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:35,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 612.0) internal successors, (3060), 5 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:35,029 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 612.0) internal successors, (3060), 5 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:35,029 INFO L175 Difference]: Start difference. First operand has 90 places, 120 transitions, 694 flow. Second operand 4 states and 981 transitions. [2023-08-27 00:38:35,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 117 transitions, 898 flow [2023-08-27 00:38:35,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 117 transitions, 856 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 00:38:35,036 INFO L231 Difference]: Finished difference. Result has 88 places, 117 transitions, 646 flow [2023-08-27 00:38:35,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=646, PETRI_PLACES=88, PETRI_TRANSITIONS=117} [2023-08-27 00:38:35,037 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2023-08-27 00:38:35,037 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 117 transitions, 646 flow [2023-08-27 00:38:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:35,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:35,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:35,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:35,242 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,SelfDestructingSolverStorable14 [2023-08-27 00:38:35,243 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:35,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1041331456, now seen corresponding path program 1 times [2023-08-27 00:38:35,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893687190] [2023-08-27 00:38:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:35,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:35,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:35,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893687190] [2023-08-27 00:38:35,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893687190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:35,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143187151] [2023-08-27 00:38:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:35,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:35,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:35,603 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:35,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 00:38:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:35,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 00:38:35,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:35,796 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 23 treesize of output 7 [2023-08-27 00:38:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:38:35,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:38:35,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143187151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:38:35,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:38:35,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-08-27 00:38:35,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920819699] [2023-08-27 00:38:35,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:35,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 00:38:35,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:35,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 00:38:35,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-08-27 00:38:35,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 612 [2023-08-27 00:38:35,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 117 transitions, 646 flow. Second operand has 5 states, 5 states have (on average 234.8) internal successors, (1174), 5 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:35,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:35,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 612 [2023-08-27 00:38:35,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:36,822 INFO L124 PetriNetUnfolderBase]: 6710/10172 cut-off events. [2023-08-27 00:38:36,822 INFO L125 PetriNetUnfolderBase]: For 3335/3335 co-relation queries the response was YES. [2023-08-27 00:38:36,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30176 conditions, 10172 events. 6710/10172 cut-off events. For 3335/3335 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 60446 event pairs, 1852 based on Foata normal form. 0/5979 useless extension candidates. Maximal degree in co-relation 30146. Up to 7379 conditions per place. [2023-08-27 00:38:36,869 INFO L140 encePairwiseOnDemand]: 603/612 looper letters, 155 selfloop transitions, 8 changer transitions 0/163 dead transitions. [2023-08-27 00:38:36,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 163 transitions, 1145 flow [2023-08-27 00:38:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 00:38:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 00:38:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1251 transitions. [2023-08-27 00:38:36,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088235294117647 [2023-08-27 00:38:36,873 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1251 transitions. [2023-08-27 00:38:36,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1251 transitions. [2023-08-27 00:38:36,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:36,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1251 transitions. [2023-08-27 00:38:36,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.2) internal successors, (1251), 5 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:36,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 612.0) internal successors, (3672), 6 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:36,880 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 612.0) internal successors, (3672), 6 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:36,880 INFO L175 Difference]: Start difference. First operand has 88 places, 117 transitions, 646 flow. Second operand 5 states and 1251 transitions. [2023-08-27 00:38:36,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 163 transitions, 1145 flow [2023-08-27 00:38:36,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 163 transitions, 1132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:38:36,895 INFO L231 Difference]: Finished difference. Result has 93 places, 122 transitions, 690 flow [2023-08-27 00:38:36,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=690, PETRI_PLACES=93, PETRI_TRANSITIONS=122} [2023-08-27 00:38:36,895 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2023-08-27 00:38:36,895 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 122 transitions, 690 flow [2023-08-27 00:38:36,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 234.8) internal successors, (1174), 5 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:36,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:36,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:36,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:37,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 00:38:37,101 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:37,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash 332286873, now seen corresponding path program 1 times [2023-08-27 00:38:37,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:37,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960793977] [2023-08-27 00:38:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:37,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:37,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:37,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960793977] [2023-08-27 00:38:37,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960793977] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:37,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132369696] [2023-08-27 00:38:37,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:37,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:37,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:37,477 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:37,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 00:38:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:37,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 00:38:37,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:37,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:38:37,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:38:37,685 INFO L322 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-27 00:38:37,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-27 00:38:37,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:38:37,777 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 00:38:37,778 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 00:38:37,809 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 00:38:37,847 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 6 treesize of output 5 [2023-08-27 00:38:37,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:38:37,920 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 00:38:37,972 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 19 treesize of output 7 [2023-08-27 00:38:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:37,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:38:40,364 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:38:40,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2023-08-27 00:38:40,373 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 1367 treesize of output 1287 [2023-08-27 00:38:40,393 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 93 treesize of output 81 [2023-08-27 00:38:40,403 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 92 treesize of output 68 [2023-08-27 00:38:40,419 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 70 treesize of output 46 [2023-08-27 00:38:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:40,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132369696] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:38:40,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:38:40,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2023-08-27 00:38:40,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697946438] [2023-08-27 00:38:40,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:38:40,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 00:38:40,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:40,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 00:38:40,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=489, Unknown=17, NotChecked=0, Total=600 [2023-08-27 00:38:40,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 612 [2023-08-27 00:38:40,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 122 transitions, 690 flow. Second operand has 25 states, 25 states have (on average 179.68) internal successors, (4492), 25 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:40,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:40,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 612 [2023-08-27 00:38:40,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:43,730 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_~q1_back~0_138 Int) (v_ArrVal_586 (Array Int Int)) (v_ArrVal_587 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_586)) (.cse1 (+ c_~q1~0.offset (* v_~q1_back~0_138 4)))) (or (< v_~q1_back~0_138 0) (<= c_~n1~0 v_~q1_back~0_138) (< 2 (select (select .cse0 c_~q1~0.base) .cse1)) (< (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_587) c_~q1~0.base) .cse1) 2147483649)))) (forall ((v_ArrVal_587 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_587) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 2147483649))) is different from false [2023-08-27 00:38:47,530 INFO L124 PetriNetUnfolderBase]: 19517/29129 cut-off events. [2023-08-27 00:38:47,530 INFO L125 PetriNetUnfolderBase]: For 20859/20859 co-relation queries the response was YES. [2023-08-27 00:38:47,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91539 conditions, 29129 events. 19517/29129 cut-off events. For 20859/20859 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 196199 event pairs, 3067 based on Foata normal form. 628/18311 useless extension candidates. Maximal degree in co-relation 91506. Up to 8505 conditions per place. [2023-08-27 00:38:47,749 INFO L140 encePairwiseOnDemand]: 593/612 looper letters, 437 selfloop transitions, 115 changer transitions 1/553 dead transitions. [2023-08-27 00:38:47,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 553 transitions, 3824 flow [2023-08-27 00:38:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-27 00:38:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-27 00:38:47,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6466 transitions. [2023-08-27 00:38:47,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31074586697424067 [2023-08-27 00:38:47,763 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 6466 transitions. [2023-08-27 00:38:47,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 6466 transitions. [2023-08-27 00:38:47,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:47,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 6466 transitions. [2023-08-27 00:38:47,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 190.1764705882353) internal successors, (6466), 34 states have internal predecessors, (6466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:47,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 612.0) internal successors, (21420), 35 states have internal predecessors, (21420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:47,794 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 612.0) internal successors, (21420), 35 states have internal predecessors, (21420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:47,794 INFO L175 Difference]: Start difference. First operand has 93 places, 122 transitions, 690 flow. Second operand 34 states and 6466 transitions. [2023-08-27 00:38:47,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 553 transitions, 3824 flow [2023-08-27 00:38:47,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 553 transitions, 3813 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 00:38:47,837 INFO L231 Difference]: Finished difference. Result has 142 places, 223 transitions, 1818 flow [2023-08-27 00:38:47,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1818, PETRI_PLACES=142, PETRI_TRANSITIONS=223} [2023-08-27 00:38:47,837 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 75 predicate places. [2023-08-27 00:38:47,837 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 223 transitions, 1818 flow [2023-08-27 00:38:47,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 179.68) internal successors, (4492), 25 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:47,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:47,838 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-27 00:38:47,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:48,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:48,047 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:48,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash -397355325, now seen corresponding path program 1 times [2023-08-27 00:38:48,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:48,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204130014] [2023-08-27 00:38:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:48,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:48,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204130014] [2023-08-27 00:38:48,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204130014] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442860620] [2023-08-27 00:38:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:48,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:48,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:48,229 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:48,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 00:38:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:48,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 00:38:48,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:48,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:38:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:38:48,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442860620] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:38:48,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:38:48,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-27 00:38:48,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953083944] [2023-08-27 00:38:48,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:38:48,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 00:38:48,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:48,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 00:38:48,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-27 00:38:48,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 612 [2023-08-27 00:38:48,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 223 transitions, 1818 flow. Second operand has 25 states, 25 states have (on average 234.12) internal successors, (5853), 25 states have internal predecessors, (5853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:48,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:48,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 612 [2023-08-27 00:38:48,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:51,890 INFO L124 PetriNetUnfolderBase]: 19621/29353 cut-off events. [2023-08-27 00:38:51,891 INFO L125 PetriNetUnfolderBase]: For 72206/72206 co-relation queries the response was YES. [2023-08-27 00:38:52,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115570 conditions, 29353 events. 19621/29353 cut-off events. For 72206/72206 co-relation queries the response was YES. Maximal size of possible extension queue 1472. Compared 195403 event pairs, 12226 based on Foata normal form. 72/18935 useless extension candidates. Maximal degree in co-relation 115519. Up to 29042 conditions per place. [2023-08-27 00:38:52,177 INFO L140 encePairwiseOnDemand]: 604/612 looper letters, 130 selfloop transitions, 189 changer transitions 0/319 dead transitions. [2023-08-27 00:38:52,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 319 transitions, 3188 flow [2023-08-27 00:38:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 00:38:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 00:38:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5782 transitions. [2023-08-27 00:38:52,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936546840958606 [2023-08-27 00:38:52,183 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5782 transitions. [2023-08-27 00:38:52,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5782 transitions. [2023-08-27 00:38:52,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:52,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5782 transitions. [2023-08-27 00:38:52,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 240.91666666666666) internal successors, (5782), 24 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:52,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 612.0) internal successors, (15300), 25 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:52,198 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 612.0) internal successors, (15300), 25 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:52,198 INFO L175 Difference]: Start difference. First operand has 142 places, 223 transitions, 1818 flow. Second operand 24 states and 5782 transitions. [2023-08-27 00:38:52,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 319 transitions, 3188 flow [2023-08-27 00:38:52,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 319 transitions, 3121 flow, removed 32 selfloop flow, removed 1 redundant places. [2023-08-27 00:38:52,769 INFO L231 Difference]: Finished difference. Result has 176 places, 319 transitions, 3051 flow [2023-08-27 00:38:52,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3051, PETRI_PLACES=176, PETRI_TRANSITIONS=319} [2023-08-27 00:38:52,769 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 109 predicate places. [2023-08-27 00:38:52,769 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 319 transitions, 3051 flow [2023-08-27 00:38:52,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 234.12) internal successors, (5853), 25 states have internal predecessors, (5853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:52,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:52,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:52,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:52,977 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,SelfDestructingSolverStorable17 [2023-08-27 00:38:52,978 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:52,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:52,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1039255941, now seen corresponding path program 1 times [2023-08-27 00:38:52,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:52,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693068536] [2023-08-27 00:38:52,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:52,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:53,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:53,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693068536] [2023-08-27 00:38:53,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693068536] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:53,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442233168] [2023-08-27 00:38:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:53,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:53,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:53,471 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:53,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 00:38:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:53,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 00:38:53,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:38:53,792 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 19 treesize of output 7 [2023-08-27 00:38:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:53,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:38:53,855 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:38:53,856 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 25 treesize of output 17 [2023-08-27 00:38:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:38:53,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442233168] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:53,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:38:53,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 18 [2023-08-27 00:38:53,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878205966] [2023-08-27 00:38:53,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:38:53,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:38:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:38:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:38:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-08-27 00:38:53,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 612 [2023-08-27 00:38:53,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 319 transitions, 3051 flow. Second operand has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:53,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:38:53,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 612 [2023-08-27 00:38:53,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:38:58,197 INFO L124 PetriNetUnfolderBase]: 19929/29925 cut-off events. [2023-08-27 00:38:58,197 INFO L125 PetriNetUnfolderBase]: For 69076/69076 co-relation queries the response was YES. [2023-08-27 00:38:58,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116722 conditions, 29925 events. 19929/29925 cut-off events. For 69076/69076 co-relation queries the response was YES. Maximal size of possible extension queue 1539. Compared 201534 event pairs, 7090 based on Foata normal form. 64/19499 useless extension candidates. Maximal degree in co-relation 116658. Up to 22167 conditions per place. [2023-08-27 00:38:58,627 INFO L140 encePairwiseOnDemand]: 602/612 looper letters, 355 selfloop transitions, 35 changer transitions 0/390 dead transitions. [2023-08-27 00:38:58,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 390 transitions, 4257 flow [2023-08-27 00:38:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:38:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:38:58,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1464 transitions. [2023-08-27 00:38:58,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39869281045751637 [2023-08-27 00:38:58,630 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1464 transitions. [2023-08-27 00:38:58,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1464 transitions. [2023-08-27 00:38:58,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:38:58,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1464 transitions. [2023-08-27 00:38:58,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:58,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 612.0) internal successors, (4284), 7 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:58,634 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 612.0) internal successors, (4284), 7 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:58,634 INFO L175 Difference]: Start difference. First operand has 176 places, 319 transitions, 3051 flow. Second operand 6 states and 1464 transitions. [2023-08-27 00:38:58,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 390 transitions, 4257 flow [2023-08-27 00:38:58,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 390 transitions, 3749 flow, removed 125 selfloop flow, removed 11 redundant places. [2023-08-27 00:38:58,973 INFO L231 Difference]: Finished difference. Result has 174 places, 336 transitions, 2862 flow [2023-08-27 00:38:58,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2862, PETRI_PLACES=174, PETRI_TRANSITIONS=336} [2023-08-27 00:38:58,973 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 107 predicate places. [2023-08-27 00:38:58,973 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 336 transitions, 2862 flow [2023-08-27 00:38:58,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:38:58,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:38:58,974 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:38:58,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 00:38:59,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:59,180 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:38:59,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:38:59,180 INFO L85 PathProgramCache]: Analyzing trace with hash 557727317, now seen corresponding path program 1 times [2023-08-27 00:38:59,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:38:59,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309452464] [2023-08-27 00:38:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:59,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:38:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:38:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:38:59,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:38:59,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309452464] [2023-08-27 00:38:59,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309452464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:38:59,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988057890] [2023-08-27 00:38:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:38:59,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:38:59,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:38:59,941 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:38:59,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 00:39:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:39:00,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:39:00,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:39:00,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:00,231 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 00:39:00,258 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 23 treesize of output 7 [2023-08-27 00:39:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:39:00,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:39:00,323 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_776 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_776) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 2147483648))) is different from false [2023-08-27 00:39:00,332 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:39:00,333 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 45 treesize of output 37 [2023-08-27 00:39:00,338 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 11 treesize of output 5 [2023-08-27 00:39:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:39:00,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988057890] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:39:00,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:39:00,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 21 [2023-08-27 00:39:00,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393887480] [2023-08-27 00:39:00,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:39:00,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 00:39:00,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:39:00,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 00:39:00,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=395, Unknown=1, NotChecked=40, Total=506 [2023-08-27 00:39:00,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 612 [2023-08-27 00:39:00,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 336 transitions, 2862 flow. Second operand has 8 states, 8 states have (on average 220.75) internal successors, (1766), 8 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:00,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:39:00,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 612 [2023-08-27 00:39:00,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:39:05,001 INFO L124 PetriNetUnfolderBase]: 20025/30071 cut-off events. [2023-08-27 00:39:05,001 INFO L125 PetriNetUnfolderBase]: For 76127/76127 co-relation queries the response was YES. [2023-08-27 00:39:05,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122280 conditions, 30071 events. 20025/30071 cut-off events. For 76127/76127 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 203288 event pairs, 5175 based on Foata normal form. 108/20725 useless extension candidates. Maximal degree in co-relation 122212. Up to 21352 conditions per place. [2023-08-27 00:39:05,246 INFO L140 encePairwiseOnDemand]: 600/612 looper letters, 294 selfloop transitions, 93 changer transitions 0/387 dead transitions. [2023-08-27 00:39:05,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 387 transitions, 3933 flow [2023-08-27 00:39:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:39:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:39:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1624 transitions. [2023-08-27 00:39:05,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790849673202614 [2023-08-27 00:39:05,248 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1624 transitions. [2023-08-27 00:39:05,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1624 transitions. [2023-08-27 00:39:05,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:39:05,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1624 transitions. [2023-08-27 00:39:05,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:05,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 612.0) internal successors, (4896), 8 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:05,252 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 612.0) internal successors, (4896), 8 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:05,252 INFO L175 Difference]: Start difference. First operand has 174 places, 336 transitions, 2862 flow. Second operand 7 states and 1624 transitions. [2023-08-27 00:39:05,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 387 transitions, 3933 flow [2023-08-27 00:39:05,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 387 transitions, 3918 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 00:39:05,835 INFO L231 Difference]: Finished difference. Result has 182 places, 341 transitions, 3249 flow [2023-08-27 00:39:05,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3249, PETRI_PLACES=182, PETRI_TRANSITIONS=341} [2023-08-27 00:39:05,836 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 115 predicate places. [2023-08-27 00:39:05,836 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 341 transitions, 3249 flow [2023-08-27 00:39:05,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 220.75) internal successors, (1766), 8 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:05,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:39:05,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:39:05,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 00:39:06,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:39:06,041 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:39:06,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:39:06,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1041331701, now seen corresponding path program 2 times [2023-08-27 00:39:06,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:39:06,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820470961] [2023-08-27 00:39:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:39:06,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:39:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:39:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:39:06,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:39:06,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820470961] [2023-08-27 00:39:06,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820470961] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:39:06,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124870708] [2023-08-27 00:39:06,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:39:06,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:39:06,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:39:06,409 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:39:06,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 00:39:06,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:39:06,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:39:06,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 00:39:06,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:39:06,673 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 23 treesize of output 7 [2023-08-27 00:39:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:39:06,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:39:06,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124870708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:39:06,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:39:06,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-27 00:39:06,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844444825] [2023-08-27 00:39:06,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:39:06,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 00:39:06,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:39:06,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 00:39:06,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:39:06,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 612 [2023-08-27 00:39:06,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 341 transitions, 3249 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:06,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:39:06,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 612 [2023-08-27 00:39:06,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:39:11,630 INFO L124 PetriNetUnfolderBase]: 19629/29493 cut-off events. [2023-08-27 00:39:11,631 INFO L125 PetriNetUnfolderBase]: For 148258/148258 co-relation queries the response was YES. [2023-08-27 00:39:11,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135124 conditions, 29493 events. 19629/29493 cut-off events. For 148258/148258 co-relation queries the response was YES. Maximal size of possible extension queue 1387. Compared 196731 event pairs, 8349 based on Foata normal form. 96/20497 useless extension candidates. Maximal degree in co-relation 135052. Up to 27301 conditions per place. [2023-08-27 00:39:11,961 INFO L140 encePairwiseOnDemand]: 602/612 looper letters, 355 selfloop transitions, 38 changer transitions 0/393 dead transitions. [2023-08-27 00:39:11,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 393 transitions, 4374 flow [2023-08-27 00:39:11,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:39:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:39:11,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1479 transitions. [2023-08-27 00:39:11,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2023-08-27 00:39:11,964 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1479 transitions. [2023-08-27 00:39:11,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1479 transitions. [2023-08-27 00:39:11,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:39:11,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1479 transitions. [2023-08-27 00:39:11,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 246.5) internal successors, (1479), 6 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:11,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 612.0) internal successors, (4284), 7 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:11,968 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 612.0) internal successors, (4284), 7 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:11,968 INFO L175 Difference]: Start difference. First operand has 182 places, 341 transitions, 3249 flow. Second operand 6 states and 1479 transitions. [2023-08-27 00:39:11,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 393 transitions, 4374 flow [2023-08-27 00:39:12,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 393 transitions, 4323 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-27 00:39:12,570 INFO L231 Difference]: Finished difference. Result has 188 places, 353 transitions, 3507 flow [2023-08-27 00:39:12,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=3208, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3507, PETRI_PLACES=188, PETRI_TRANSITIONS=353} [2023-08-27 00:39:12,571 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 121 predicate places. [2023-08-27 00:39:12,571 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 353 transitions, 3507 flow [2023-08-27 00:39:12,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:12,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:39:12,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:39:12,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 00:39:12,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-27 00:39:12,778 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:39:12,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:39:12,778 INFO L85 PathProgramCache]: Analyzing trace with hash 217175867, now seen corresponding path program 1 times [2023-08-27 00:39:12,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:39:12,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531697602] [2023-08-27 00:39:12,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:39:12,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:39:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:39:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:39:13,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:39:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531697602] [2023-08-27 00:39:13,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531697602] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:39:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59098406] [2023-08-27 00:39:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:39:13,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:39:13,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:39:13,249 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:39:13,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 00:39:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:39:13,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 00:39:13,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:39:13,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:13,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:13,488 INFO L322 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-27 00:39:13,488 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-27 00:39:13,543 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:39:13,579 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 00:39:13,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 00:39:13,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 00:39:13,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 00:39:13,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:13,739 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 00:39:13,806 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 19 treesize of output 7 [2023-08-27 00:39:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:39:13,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:39:13,893 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_889 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_889) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 2147483648)) is different from false [2023-08-27 00:39:13,965 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_889 (Array Int Int)) (v_ArrVal_888 (Array Int Int)) (v_~q1_back~0_145 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_888)) (.cse1 (+ (* v_~q1_back~0_145 4) c_~q1~0.offset))) (or (< (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_889) c_~q1~0.base) .cse1) 2147483648) (<= c_~n1~0 v_~q1_back~0_145) (< 0 (select (select .cse0 c_~q1~0.base) .cse1)) (< v_~q1_back~0_145 0)))) is different from false [2023-08-27 00:39:14,100 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:39:14,101 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2023-08-27 00:39:14,105 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 365 treesize of output 341 [2023-08-27 00:39:14,117 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 195 treesize of output 171 [2023-08-27 00:39:14,125 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 124 treesize of output 100 [2023-08-27 00:39:14,134 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 79 treesize of output 67 [2023-08-27 00:39:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 00:39:14,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59098406] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:39:14,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:39:14,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-08-27 00:39:14,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196918240] [2023-08-27 00:39:14,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:39:14,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 00:39:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:39:14,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 00:39:14,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=560, Unknown=4, NotChecked=98, Total=756 [2023-08-27 00:39:14,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 612 [2023-08-27 00:39:14,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 353 transitions, 3507 flow. Second operand has 28 states, 28 states have (on average 178.5) internal successors, (4998), 28 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:14,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:39:14,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 612 [2023-08-27 00:39:14,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:39:21,364 INFO L124 PetriNetUnfolderBase]: 19956/30076 cut-off events. [2023-08-27 00:39:21,364 INFO L125 PetriNetUnfolderBase]: For 151919/151919 co-relation queries the response was YES. [2023-08-27 00:39:21,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137295 conditions, 30076 events. 19956/30076 cut-off events. For 151919/151919 co-relation queries the response was YES. Maximal size of possible extension queue 1450. Compared 203736 event pairs, 6211 based on Foata normal form. 82/20874 useless extension candidates. Maximal degree in co-relation 137220. Up to 8747 conditions per place. [2023-08-27 00:39:21,694 INFO L140 encePairwiseOnDemand]: 594/612 looper letters, 575 selfloop transitions, 169 changer transitions 32/776 dead transitions. [2023-08-27 00:39:21,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 776 transitions, 7605 flow [2023-08-27 00:39:21,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-27 00:39:21,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-27 00:39:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 6912 transitions. [2023-08-27 00:39:21,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3052464228934817 [2023-08-27 00:39:21,700 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 6912 transitions. [2023-08-27 00:39:21,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 6912 transitions. [2023-08-27 00:39:21,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:39:21,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 6912 transitions. [2023-08-27 00:39:21,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 186.8108108108108) internal successors, (6912), 37 states have internal predecessors, (6912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:21,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 612.0) internal successors, (23256), 38 states have internal predecessors, (23256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:21,724 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 612.0) internal successors, (23256), 38 states have internal predecessors, (23256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:21,725 INFO L175 Difference]: Start difference. First operand has 188 places, 353 transitions, 3507 flow. Second operand 37 states and 6912 transitions. [2023-08-27 00:39:21,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 776 transitions, 7605 flow [2023-08-27 00:39:22,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 776 transitions, 7556 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-08-27 00:39:22,234 INFO L231 Difference]: Finished difference. Result has 230 places, 404 transitions, 4537 flow [2023-08-27 00:39:22,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4537, PETRI_PLACES=230, PETRI_TRANSITIONS=404} [2023-08-27 00:39:22,234 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 163 predicate places. [2023-08-27 00:39:22,235 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 404 transitions, 4537 flow [2023-08-27 00:39:22,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 178.5) internal successors, (4998), 28 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:22,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:39:22,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:39:22,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 00:39:22,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 00:39:22,436 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:39:22,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:39:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1772693163, now seen corresponding path program 1 times [2023-08-27 00:39:22,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:39:22,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279409654] [2023-08-27 00:39:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:39:22,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:39:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:39:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:39:22,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:39:22,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279409654] [2023-08-27 00:39:22,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279409654] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:39:22,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072173381] [2023-08-27 00:39:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:39:22,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:39:22,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:39:22,807 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:39:22,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 00:39:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:39:22,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 00:39:22,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:39:23,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:23,145 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 00:39:23,174 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 19 treesize of output 7 [2023-08-27 00:39:23,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:39:23,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:39:23,224 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_946 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_946) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 2147483649)) is different from false [2023-08-27 00:39:23,236 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:39:23,237 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 41 treesize of output 33 [2023-08-27 00:39:23,240 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 9 treesize of output 3 [2023-08-27 00:39:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:39:23,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072173381] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:39:23,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:39:23,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-08-27 00:39:23,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952279324] [2023-08-27 00:39:23,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:39:23,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 00:39:23,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:39:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 00:39:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=392, Unknown=1, NotChecked=40, Total=506 [2023-08-27 00:39:23,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 612 [2023-08-27 00:39:23,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 404 transitions, 4537 flow. Second operand has 23 states, 23 states have (on average 187.95652173913044) internal successors, (4323), 23 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:23,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:39:23,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 612 [2023-08-27 00:39:23,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:39:31,575 INFO L124 PetriNetUnfolderBase]: 26352/39937 cut-off events. [2023-08-27 00:39:31,575 INFO L125 PetriNetUnfolderBase]: For 212576/212576 co-relation queries the response was YES. [2023-08-27 00:39:31,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189237 conditions, 39937 events. 26352/39937 cut-off events. For 212576/212576 co-relation queries the response was YES. Maximal size of possible extension queue 1804. Compared 283854 event pairs, 5453 based on Foata normal form. 262/28597 useless extension candidates. Maximal degree in co-relation 189154. Up to 11459 conditions per place. [2023-08-27 00:39:32,083 INFO L140 encePairwiseOnDemand]: 589/612 looper letters, 785 selfloop transitions, 184 changer transitions 0/969 dead transitions. [2023-08-27 00:39:32,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 969 transitions, 10131 flow [2023-08-27 00:39:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-27 00:39:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-27 00:39:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6048 transitions. [2023-08-27 00:39:32,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32941176470588235 [2023-08-27 00:39:32,090 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6048 transitions. [2023-08-27 00:39:32,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6048 transitions. [2023-08-27 00:39:32,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:39:32,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6048 transitions. [2023-08-27 00:39:32,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 201.6) internal successors, (6048), 30 states have internal predecessors, (6048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:32,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 612.0) internal successors, (18972), 31 states have internal predecessors, (18972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:32,110 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 612.0) internal successors, (18972), 31 states have internal predecessors, (18972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:32,110 INFO L175 Difference]: Start difference. First operand has 230 places, 404 transitions, 4537 flow. Second operand 30 states and 6048 transitions. [2023-08-27 00:39:32,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 969 transitions, 10131 flow [2023-08-27 00:39:33,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 969 transitions, 10005 flow, removed 34 selfloop flow, removed 10 redundant places. [2023-08-27 00:39:33,685 INFO L231 Difference]: Finished difference. Result has 256 places, 459 transitions, 5880 flow [2023-08-27 00:39:33,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=4382, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5880, PETRI_PLACES=256, PETRI_TRANSITIONS=459} [2023-08-27 00:39:33,685 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 189 predicate places. [2023-08-27 00:39:33,685 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 459 transitions, 5880 flow [2023-08-27 00:39:33,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 187.95652173913044) internal successors, (4323), 23 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:33,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:39:33,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:39:33,691 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 00:39:33,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 00:39:33,887 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:39:33,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:39:33,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1717683221, now seen corresponding path program 1 times [2023-08-27 00:39:33,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:39:33,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942047530] [2023-08-27 00:39:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:39:33,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:39:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:39:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:39:34,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:39:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942047530] [2023-08-27 00:39:34,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942047530] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:39:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549623788] [2023-08-27 00:39:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:39:34,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:39:34,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:39:34,372 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:39:34,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 00:39:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:39:34,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 00:39:34,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:39:34,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:34,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:34,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:34,598 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-27 00:39:34,598 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-27 00:39:34,644 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 00:39:34,690 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 00:39:34,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 00:39:34,724 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 00:39:34,763 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 00:39:34,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:34,841 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 00:39:34,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:34,883 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 00:39:34,942 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 23 treesize of output 7 [2023-08-27 00:39:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:39:34,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:39:35,422 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:39:35,423 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 65 treesize of output 53 [2023-08-27 00:39:35,428 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 1359 treesize of output 1311 [2023-08-27 00:39:35,448 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 141 treesize of output 117 [2023-08-27 00:39:35,458 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 145 treesize of output 133 [2023-08-27 00:39:35,468 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 144 treesize of output 120 [2023-08-27 00:39:35,478 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 146 treesize of output 98 [2023-08-27 00:39:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:39:35,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549623788] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:39:35,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:39:35,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2023-08-27 00:39:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049661533] [2023-08-27 00:39:35,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:39:35,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-27 00:39:35,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:39:35,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-27 00:39:35,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=798, Unknown=12, NotChecked=0, Total=930 [2023-08-27 00:39:35,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 612 [2023-08-27 00:39:35,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 459 transitions, 5880 flow. Second operand has 31 states, 31 states have (on average 177.4516129032258) internal successors, (5501), 31 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:35,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:39:35,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 612 [2023-08-27 00:39:35,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:39:46,097 INFO L124 PetriNetUnfolderBase]: 28211/42744 cut-off events. [2023-08-27 00:39:46,097 INFO L125 PetriNetUnfolderBase]: For 374167/374167 co-relation queries the response was YES. [2023-08-27 00:39:46,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228557 conditions, 42744 events. 28211/42744 cut-off events. For 374167/374167 co-relation queries the response was YES. Maximal size of possible extension queue 1901. Compared 306872 event pairs, 8497 based on Foata normal form. 135/30501 useless extension candidates. Maximal degree in co-relation 228466. Up to 16082 conditions per place. [2023-08-27 00:39:46,652 INFO L140 encePairwiseOnDemand]: 591/612 looper letters, 550 selfloop transitions, 214 changer transitions 1/765 dead transitions. [2023-08-27 00:39:46,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 765 transitions, 9332 flow [2023-08-27 00:39:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-27 00:39:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-27 00:39:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 6855 transitions. [2023-08-27 00:39:46,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3027291997880233 [2023-08-27 00:39:46,658 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 6855 transitions. [2023-08-27 00:39:46,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 6855 transitions. [2023-08-27 00:39:46,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:39:46,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 6855 transitions. [2023-08-27 00:39:46,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 185.27027027027026) internal successors, (6855), 37 states have internal predecessors, (6855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:46,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 612.0) internal successors, (23256), 38 states have internal predecessors, (23256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:46,681 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 612.0) internal successors, (23256), 38 states have internal predecessors, (23256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:46,682 INFO L175 Difference]: Start difference. First operand has 256 places, 459 transitions, 5880 flow. Second operand 37 states and 6855 transitions. [2023-08-27 00:39:46,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 765 transitions, 9332 flow [2023-08-27 00:39:49,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 765 transitions, 9144 flow, removed 36 selfloop flow, removed 12 redundant places. [2023-08-27 00:39:49,150 INFO L231 Difference]: Finished difference. Result has 286 places, 484 transitions, 6671 flow [2023-08-27 00:39:49,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=5666, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6671, PETRI_PLACES=286, PETRI_TRANSITIONS=484} [2023-08-27 00:39:49,151 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 219 predicate places. [2023-08-27 00:39:49,151 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 484 transitions, 6671 flow [2023-08-27 00:39:49,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 177.4516129032258) internal successors, (5501), 31 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:49,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:39:49,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:39:49,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 00:39:49,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:39:49,352 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:39:49,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:39:49,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2138310765, now seen corresponding path program 1 times [2023-08-27 00:39:49,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:39:49,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521535099] [2023-08-27 00:39:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:39:49,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:39:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:39:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:39:49,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:39:49,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521535099] [2023-08-27 00:39:49,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521535099] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:39:49,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954193089] [2023-08-27 00:39:49,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:39:49,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:39:49,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:39:49,781 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:39:49,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 00:39:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:39:49,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-27 00:39:49,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:39:50,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:50,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:50,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:50,029 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-27 00:39:50,029 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-27 00:39:50,072 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 00:39:50,116 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 00:39:50,117 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 00:39:50,147 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 00:39:50,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 00:39:50,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 00:39:50,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:39:50,340 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 00:39:50,368 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 19 treesize of output 7 [2023-08-27 00:39:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:39:50,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:39:50,768 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:39:50,768 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 68 treesize of output 56 [2023-08-27 00:39:50,781 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 79547 treesize of output 77435 [2023-08-27 00:39:50,827 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 207 treesize of output 195 [2023-08-27 00:39:50,838 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 195 treesize of output 171 [2023-08-27 00:39:50,850 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 194 treesize of output 146 [2023-08-27 00:39:50,860 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 146 treesize of output 98 [2023-08-27 00:39:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:39:50,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954193089] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:39:50,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:39:50,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 28 [2023-08-27 00:39:50,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597914259] [2023-08-27 00:39:50,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:39:50,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 00:39:50,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:39:50,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 00:39:50,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=725, Unknown=18, NotChecked=0, Total=870 [2023-08-27 00:39:50,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 612 [2023-08-27 00:39:50,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 484 transitions, 6671 flow. Second operand has 30 states, 30 states have (on average 177.5) internal successors, (5325), 30 states have internal predecessors, (5325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:39:50,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:39:50,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 612 [2023-08-27 00:39:50,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:39:51,810 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (<= c_~n1~0 c_~q1_back~0)) (.cse1 (+ (* c_~q1_front~0 4) c_~q1~0.offset)) (.cse3 (+ (* c_~q1_back~0 4) c_~q1~0.offset)) (.cse2 (< c_~q1_back~0 0))) (and (or .cse0 (forall ((v_ArrVal_1078 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1078) c_~q1~0.base) .cse1) 2147483648)) .cse2 (< 0 (select (select |c_#memory_int| c_~q1~0.base) .cse3))) (forall ((v_ArrVal_1078 (Array Int Int)) (v_ArrVal_1077 (Array Int Int)) (v_ArrVal_1076 (Array Int Int)) (v_~q1_back~0_151 Int)) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1076) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1077)) (.cse5 (+ c_~q1~0.offset (* v_~q1_back~0_151 4)))) (or (< 0 (select (select .cse4 c_~q1~0.base) .cse5)) (<= c_~n1~0 v_~q1_back~0_151) (< v_~q1_back~0_151 0) (< (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1078) c_~q1~0.base) .cse5) 2147483648)))) (forall ((v_ArrVal_1078 (Array Int Int)) (v_ArrVal_1077 (Array Int Int)) (v_ArrVal_1076 (Array Int Int)) (v_~q1_back~0_151 Int) (v_ArrVal_1075 (Array Int Int))) (let ((.cse6 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1075) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1076) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1077)) (.cse7 (+ c_~q1~0.offset (* v_~q1_back~0_151 4)))) (or (< (select (select (store .cse6 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1078) c_~q1~0.base) .cse7) 2147483648) (<= c_~n1~0 v_~q1_back~0_151) (< 0 (select (select .cse6 c_~q1~0.base) .cse7)) (< v_~q1_back~0_151 0)))) (or .cse0 (forall ((v_ArrVal_1078 (Array Int Int)) (v_ArrVal_1077 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1077))) (or (< (select (select (store .cse8 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1078) c_~q1~0.base) .cse1) 2147483648) (< 0 (select (select .cse8 c_~q1~0.base) .cse3))))) .cse2))) is different from false [2023-08-27 00:40:02,112 INFO L124 PetriNetUnfolderBase]: 28213/42759 cut-off events. [2023-08-27 00:40:02,112 INFO L125 PetriNetUnfolderBase]: For 471141/471141 co-relation queries the response was YES. [2023-08-27 00:40:02,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237885 conditions, 42759 events. 28213/42759 cut-off events. For 471141/471141 co-relation queries the response was YES. Maximal size of possible extension queue 1961. Compared 305001 event pairs, 11089 based on Foata normal form. 69/30484 useless extension candidates. Maximal degree in co-relation 237789. Up to 16174 conditions per place. [2023-08-27 00:40:02,705 INFO L140 encePairwiseOnDemand]: 592/612 looper letters, 616 selfloop transitions, 211 changer transitions 2/829 dead transitions. [2023-08-27 00:40:02,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 829 transitions, 10464 flow [2023-08-27 00:40:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-27 00:40:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-27 00:40:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 7041 transitions. [2023-08-27 00:40:02,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3027605779153767 [2023-08-27 00:40:02,712 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 7041 transitions. [2023-08-27 00:40:02,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 7041 transitions. [2023-08-27 00:40:02,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:40:02,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 7041 transitions. [2023-08-27 00:40:02,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 185.28947368421052) internal successors, (7041), 38 states have internal predecessors, (7041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:02,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 612.0) internal successors, (23868), 39 states have internal predecessors, (23868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:02,734 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 612.0) internal successors, (23868), 39 states have internal predecessors, (23868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:02,734 INFO L175 Difference]: Start difference. First operand has 286 places, 484 transitions, 6671 flow. Second operand 38 states and 7041 transitions. [2023-08-27 00:40:02,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 829 transitions, 10464 flow [2023-08-27 00:40:05,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 829 transitions, 10267 flow, removed 27 selfloop flow, removed 17 redundant places. [2023-08-27 00:40:05,098 INFO L231 Difference]: Finished difference. Result has 315 places, 511 transitions, 7446 flow [2023-08-27 00:40:05,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=6454, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7446, PETRI_PLACES=315, PETRI_TRANSITIONS=511} [2023-08-27 00:40:05,099 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 248 predicate places. [2023-08-27 00:40:05,099 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 511 transitions, 7446 flow [2023-08-27 00:40:05,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 177.5) internal successors, (5325), 30 states have internal predecessors, (5325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:05,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:40:05,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:40:05,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 00:40:05,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:40:05,301 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:40:05,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:40:05,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1826983598, now seen corresponding path program 2 times [2023-08-27 00:40:05,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:40:05,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62475848] [2023-08-27 00:40:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:40:05,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:40:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:40:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:40:05,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:40:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62475848] [2023-08-27 00:40:05,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62475848] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:40:05,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497437438] [2023-08-27 00:40:05,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:40:05,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:40:05,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:40:05,885 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:40:05,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 00:40:06,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:40:06,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:40:06,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 00:40:06,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:40:06,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:40:06,213 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 00:40:06,237 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 23 treesize of output 7 [2023-08-27 00:40:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:40:06,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:40:06,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497437438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:40:06,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:40:06,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2023-08-27 00:40:06,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735912328] [2023-08-27 00:40:06,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:40:06,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 00:40:06,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:40:06,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 00:40:06,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-08-27 00:40:06,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 612 [2023-08-27 00:40:06,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 511 transitions, 7446 flow. Second operand has 9 states, 9 states have (on average 219.66666666666666) internal successors, (1977), 9 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:06,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:40:06,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 612 [2023-08-27 00:40:06,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:40:15,339 INFO L124 PetriNetUnfolderBase]: 28680/43717 cut-off events. [2023-08-27 00:40:15,339 INFO L125 PetriNetUnfolderBase]: For 545321/545321 co-relation queries the response was YES. [2023-08-27 00:40:15,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248652 conditions, 43717 events. 28680/43717 cut-off events. For 545321/545321 co-relation queries the response was YES. Maximal size of possible extension queue 1991. Compared 314159 event pairs, 12506 based on Foata normal form. 184/31469 useless extension candidates. Maximal degree in co-relation 248547. Up to 39551 conditions per place. [2023-08-27 00:40:15,961 INFO L140 encePairwiseOnDemand]: 602/612 looper letters, 497 selfloop transitions, 68 changer transitions 2/567 dead transitions. [2023-08-27 00:40:15,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 567 transitions, 9043 flow [2023-08-27 00:40:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:40:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:40:15,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1839 transitions. [2023-08-27 00:40:15,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3756127450980392 [2023-08-27 00:40:15,963 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1839 transitions. [2023-08-27 00:40:15,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1839 transitions. [2023-08-27 00:40:15,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:40:15,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1839 transitions. [2023-08-27 00:40:15,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 229.875) internal successors, (1839), 8 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:15,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 612.0) internal successors, (5508), 9 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:15,968 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 612.0) internal successors, (5508), 9 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:15,968 INFO L175 Difference]: Start difference. First operand has 315 places, 511 transitions, 7446 flow. Second operand 8 states and 1839 transitions. [2023-08-27 00:40:15,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 567 transitions, 9043 flow [2023-08-27 00:40:19,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 567 transitions, 8739 flow, removed 32 selfloop flow, removed 15 redundant places. [2023-08-27 00:40:19,062 INFO L231 Difference]: Finished difference. Result has 309 places, 515 transitions, 7379 flow [2023-08-27 00:40:19,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=7144, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7379, PETRI_PLACES=309, PETRI_TRANSITIONS=515} [2023-08-27 00:40:19,063 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 242 predicate places. [2023-08-27 00:40:19,063 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 515 transitions, 7379 flow [2023-08-27 00:40:19,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 219.66666666666666) internal successors, (1977), 9 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:19,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:40:19,063 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:40:19,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-27 00:40:19,264 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 00:40:19,264 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:40:19,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:40:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1826983353, now seen corresponding path program 1 times [2023-08-27 00:40:19,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:40:19,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148901063] [2023-08-27 00:40:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:40:19,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:40:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:40:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:40:19,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:40:19,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148901063] [2023-08-27 00:40:19,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148901063] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:40:19,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557025977] [2023-08-27 00:40:19,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:40:19,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:40:19,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:40:19,675 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:40:19,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 00:40:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:40:19,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:40:19,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:40:19,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:40:19,918 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 00:40:19,934 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 23 treesize of output 7 [2023-08-27 00:40:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:40:19,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:40:20,004 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:40:20,004 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 45 treesize of output 37 [2023-08-27 00:40:20,012 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 11 treesize of output 5 [2023-08-27 00:40:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:40:20,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557025977] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:40:20,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:40:20,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 21 [2023-08-27 00:40:20,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502842176] [2023-08-27 00:40:20,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:40:20,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 00:40:20,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:40:20,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 00:40:20,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=425, Unknown=5, NotChecked=0, Total=506 [2023-08-27 00:40:20,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 612 [2023-08-27 00:40:20,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 515 transitions, 7379 flow. Second operand has 8 states, 8 states have (on average 220.875) internal successors, (1767), 8 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:20,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:40:20,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 612 [2023-08-27 00:40:20,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:40:28,682 INFO L124 PetriNetUnfolderBase]: 28816/43936 cut-off events. [2023-08-27 00:40:28,683 INFO L125 PetriNetUnfolderBase]: For 433970/433970 co-relation queries the response was YES. [2023-08-27 00:40:29,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252306 conditions, 43936 events. 28816/43936 cut-off events. For 433970/433970 co-relation queries the response was YES. Maximal size of possible extension queue 1999. Compared 318822 event pairs, 7578 based on Foata normal form. 129/31633 useless extension candidates. Maximal degree in co-relation 252199. Up to 30696 conditions per place. [2023-08-27 00:40:29,573 INFO L140 encePairwiseOnDemand]: 597/612 looper letters, 393 selfloop transitions, 188 changer transitions 5/586 dead transitions. [2023-08-27 00:40:29,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 586 transitions, 9307 flow [2023-08-27 00:40:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:40:29,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:40:29,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1847 transitions. [2023-08-27 00:40:29,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3772467320261438 [2023-08-27 00:40:29,576 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1847 transitions. [2023-08-27 00:40:29,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1847 transitions. [2023-08-27 00:40:29,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:40:29,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1847 transitions. [2023-08-27 00:40:29,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 230.875) internal successors, (1847), 8 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:29,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 612.0) internal successors, (5508), 9 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:29,580 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 612.0) internal successors, (5508), 9 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:29,580 INFO L175 Difference]: Start difference. First operand has 309 places, 515 transitions, 7379 flow. Second operand 8 states and 1847 transitions. [2023-08-27 00:40:29,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 586 transitions, 9307 flow [2023-08-27 00:40:33,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 586 transitions, 9190 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-08-27 00:40:33,743 INFO L231 Difference]: Finished difference. Result has 316 places, 535 transitions, 8281 flow [2023-08-27 00:40:33,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=7253, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8281, PETRI_PLACES=316, PETRI_TRANSITIONS=535} [2023-08-27 00:40:33,743 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 249 predicate places. [2023-08-27 00:40:33,743 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 535 transitions, 8281 flow [2023-08-27 00:40:33,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 220.875) internal successors, (1767), 8 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:33,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:40:33,744 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:40:33,749 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 00:40:33,944 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 00:40:33,944 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:40:33,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:40:33,945 INFO L85 PathProgramCache]: Analyzing trace with hash -616689606, now seen corresponding path program 1 times [2023-08-27 00:40:33,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:40:33,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269713655] [2023-08-27 00:40:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:40:33,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:40:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:40:34,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:40:34,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:40:34,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269713655] [2023-08-27 00:40:34,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269713655] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:40:34,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118056780] [2023-08-27 00:40:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:40:34,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:40:34,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:40:34,413 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:40:34,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 00:40:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:40:34,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-27 00:40:34,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:40:34,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:40:34,735 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 00:40:34,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:40:34,766 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 00:40:34,786 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 23 treesize of output 7 [2023-08-27 00:40:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:40:34,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:40:34,840 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1262 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1262) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 2147483649)) is different from false [2023-08-27 00:40:34,849 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1262 (Array Int Int)) (v_ArrVal_1261 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1262) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 2147483649)) is different from false [2023-08-27 00:40:34,858 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:40:34,858 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 79 treesize of output 71 [2023-08-27 00:40:34,862 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 60 treesize of output 48 [2023-08-27 00:40:34,866 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 26 treesize of output 20 [2023-08-27 00:40:34,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:40:34,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118056780] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:40:34,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:40:34,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 8] total 24 [2023-08-27 00:40:34,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077296767] [2023-08-27 00:40:34,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:40:34,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 00:40:34,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:40:34,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 00:40:34,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=475, Unknown=2, NotChecked=90, Total=650 [2023-08-27 00:40:34,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 612 [2023-08-27 00:40:34,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 535 transitions, 8281 flow. Second operand has 9 states, 9 states have (on average 217.66666666666666) internal successors, (1959), 9 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:34,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:40:34,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 612 [2023-08-27 00:40:34,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:40:44,159 INFO L124 PetriNetUnfolderBase]: 28854/44095 cut-off events. [2023-08-27 00:40:44,159 INFO L125 PetriNetUnfolderBase]: For 513358/513358 co-relation queries the response was YES. [2023-08-27 00:40:44,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273477 conditions, 44095 events. 28854/44095 cut-off events. For 513358/513358 co-relation queries the response was YES. Maximal size of possible extension queue 2000. Compared 321274 event pairs, 7787 based on Foata normal form. 195/31858 useless extension candidates. Maximal degree in co-relation 273367. Up to 31119 conditions per place. [2023-08-27 00:40:44,871 INFO L140 encePairwiseOnDemand]: 594/612 looper letters, 426 selfloop transitions, 172 changer transitions 0/598 dead transitions. [2023-08-27 00:40:44,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 598 transitions, 10155 flow [2023-08-27 00:40:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:40:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:40:44,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1827 transitions. [2023-08-27 00:40:44,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37316176470588236 [2023-08-27 00:40:44,873 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1827 transitions. [2023-08-27 00:40:44,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1827 transitions. [2023-08-27 00:40:44,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:40:44,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1827 transitions. [2023-08-27 00:40:44,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 228.375) internal successors, (1827), 8 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:44,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 612.0) internal successors, (5508), 9 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:44,878 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 612.0) internal successors, (5508), 9 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:44,878 INFO L175 Difference]: Start difference. First operand has 316 places, 535 transitions, 8281 flow. Second operand 8 states and 1827 transitions. [2023-08-27 00:40:44,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 598 transitions, 10155 flow [2023-08-27 00:40:51,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 598 transitions, 9924 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-08-27 00:40:51,359 INFO L231 Difference]: Finished difference. Result has 321 places, 557 transitions, 9136 flow [2023-08-27 00:40:51,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=8005, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9136, PETRI_PLACES=321, PETRI_TRANSITIONS=557} [2023-08-27 00:40:51,359 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 254 predicate places. [2023-08-27 00:40:51,360 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 557 transitions, 9136 flow [2023-08-27 00:40:51,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 217.66666666666666) internal successors, (1959), 9 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:51,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:40:51,360 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:40:51,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 00:40:51,565 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 00:40:51,565 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:40:51,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:40:51,565 INFO L85 PathProgramCache]: Analyzing trace with hash -689940002, now seen corresponding path program 2 times [2023-08-27 00:40:51,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:40:51,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965023246] [2023-08-27 00:40:51,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:40:51,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:40:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:40:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:40:52,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:40:52,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965023246] [2023-08-27 00:40:52,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965023246] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:40:52,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804889648] [2023-08-27 00:40:52,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:40:52,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:40:52,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:40:52,217 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:40:52,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 00:40:52,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:40:52,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:40:52,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 00:40:52,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:40:52,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:40:52,517 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 18 treesize of output 20 [2023-08-27 00:40:52,539 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 23 treesize of output 7 [2023-08-27 00:40:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:40:52,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:40:52,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804889648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:40:52,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:40:52,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 17 [2023-08-27 00:40:52,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518845052] [2023-08-27 00:40:52,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:40:52,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 00:40:52,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:40:52,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 00:40:52,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-08-27 00:40:52,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 612 [2023-08-27 00:40:52,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 557 transitions, 9136 flow. Second operand has 9 states, 9 states have (on average 219.66666666666666) internal successors, (1977), 9 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:40:52,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:40:52,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 612 [2023-08-27 00:40:52,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:41:01,972 INFO L124 PetriNetUnfolderBase]: 29564/45351 cut-off events. [2023-08-27 00:41:01,972 INFO L125 PetriNetUnfolderBase]: For 803618/803618 co-relation queries the response was YES. [2023-08-27 00:41:02,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302125 conditions, 45351 events. 29564/45351 cut-off events. For 803618/803618 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 330320 event pairs, 11798 based on Foata normal form. 60/32185 useless extension candidates. Maximal degree in co-relation 302014. Up to 38967 conditions per place. [2023-08-27 00:41:02,892 INFO L140 encePairwiseOnDemand]: 602/612 looper letters, 499 selfloop transitions, 120 changer transitions 0/619 dead transitions. [2023-08-27 00:41:02,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 619 transitions, 10927 flow [2023-08-27 00:41:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:41:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:41:02,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1845 transitions. [2023-08-27 00:41:02,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37683823529411764 [2023-08-27 00:41:02,894 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1845 transitions. [2023-08-27 00:41:02,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1845 transitions. [2023-08-27 00:41:02,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:41:02,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1845 transitions. [2023-08-27 00:41:02,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 230.625) internal successors, (1845), 8 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:02,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 612.0) internal successors, (5508), 9 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:02,897 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 612.0) internal successors, (5508), 9 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:02,897 INFO L175 Difference]: Start difference. First operand has 321 places, 557 transitions, 9136 flow. Second operand 8 states and 1845 transitions. [2023-08-27 00:41:02,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 619 transitions, 10927 flow [2023-08-27 00:41:08,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 619 transitions, 10810 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-27 00:41:08,739 INFO L231 Difference]: Finished difference. Result has 326 places, 562 transitions, 9470 flow [2023-08-27 00:41:08,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=9001, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9470, PETRI_PLACES=326, PETRI_TRANSITIONS=562} [2023-08-27 00:41:08,742 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 259 predicate places. [2023-08-27 00:41:08,742 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 562 transitions, 9470 flow [2023-08-27 00:41:08,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 219.66666666666666) internal successors, (1977), 9 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:08,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:41:08,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:41:08,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-27 00:41:08,952 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 00:41:08,952 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:41:08,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:41:08,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1850765774, now seen corresponding path program 2 times [2023-08-27 00:41:08,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:41:08,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928896919] [2023-08-27 00:41:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:41:08,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:41:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:41:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:41:09,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:41:09,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928896919] [2023-08-27 00:41:09,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928896919] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:41:09,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6656117] [2023-08-27 00:41:09,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:41:09,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:41:09,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:41:09,649 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:41:09,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 00:41:09,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:41:09,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:41:09,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 00:41:09,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:41:10,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:41:10,080 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 00:41:10,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:41:10,107 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 00:41:10,128 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 23 treesize of output 7 [2023-08-27 00:41:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:41:10,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:41:10,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6656117] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:41:10,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:41:10,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-08-27 00:41:10,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219736748] [2023-08-27 00:41:10,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:41:10,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 00:41:10,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:41:10,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 00:41:10,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-08-27 00:41:10,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 612 [2023-08-27 00:41:10,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 562 transitions, 9470 flow. Second operand has 9 states, 9 states have (on average 217.66666666666666) internal successors, (1959), 9 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:10,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:41:10,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 612 [2023-08-27 00:41:10,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:41:20,218 INFO L124 PetriNetUnfolderBase]: 30333/46753 cut-off events. [2023-08-27 00:41:20,219 INFO L125 PetriNetUnfolderBase]: For 569257/569257 co-relation queries the response was YES. [2023-08-27 00:41:20,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307480 conditions, 46753 events. 30333/46753 cut-off events. For 569257/569257 co-relation queries the response was YES. Maximal size of possible extension queue 2177. Compared 352404 event pairs, 4828 based on Foata normal form. 79/32994 useless extension candidates. Maximal degree in co-relation 307368. Up to 22352 conditions per place. [2023-08-27 00:41:20,980 INFO L140 encePairwiseOnDemand]: 604/612 looper letters, 483 selfloop transitions, 125 changer transitions 0/608 dead transitions. [2023-08-27 00:41:20,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 608 transitions, 10971 flow [2023-08-27 00:41:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:41:20,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:41:20,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1605 transitions. [2023-08-27 00:41:20,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746498599439776 [2023-08-27 00:41:20,982 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1605 transitions. [2023-08-27 00:41:20,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1605 transitions. [2023-08-27 00:41:20,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:41:20,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1605 transitions. [2023-08-27 00:41:20,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 229.28571428571428) internal successors, (1605), 7 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:20,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 612.0) internal successors, (4896), 8 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:20,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 612.0) internal successors, (4896), 8 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:20,985 INFO L175 Difference]: Start difference. First operand has 326 places, 562 transitions, 9470 flow. Second operand 7 states and 1605 transitions. [2023-08-27 00:41:20,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 608 transitions, 10971 flow [2023-08-27 00:41:28,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 608 transitions, 10867 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-27 00:41:28,392 INFO L231 Difference]: Finished difference. Result has 327 places, 559 transitions, 9563 flow [2023-08-27 00:41:28,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=9313, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9563, PETRI_PLACES=327, PETRI_TRANSITIONS=559} [2023-08-27 00:41:28,393 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 260 predicate places. [2023-08-27 00:41:28,393 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 559 transitions, 9563 flow [2023-08-27 00:41:28,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 217.66666666666666) internal successors, (1959), 9 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:28,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:41:28,394 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:41:28,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 00:41:28,601 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 00:41:28,601 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:41:28,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:41:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash -616689362, now seen corresponding path program 3 times [2023-08-27 00:41:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:41:28,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593020266] [2023-08-27 00:41:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:41:28,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:41:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:41:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:41:29,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:41:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593020266] [2023-08-27 00:41:29,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593020266] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:41:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999967193] [2023-08-27 00:41:29,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:41:29,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:41:29,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:41:29,441 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:41:29,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 00:41:29,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-27 00:41:29,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:41:29,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:41:29,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:41:29,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:41:29,796 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 00:41:29,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:41:29,851 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 00:41:29,878 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 23 treesize of output 7 [2023-08-27 00:41:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:41:29,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:41:29,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999967193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:41:29,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:41:29,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 19 [2023-08-27 00:41:29,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247163670] [2023-08-27 00:41:29,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:41:29,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 00:41:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:41:29,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 00:41:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-08-27 00:41:29,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 612 [2023-08-27 00:41:29,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 559 transitions, 9563 flow. Second operand has 10 states, 10 states have (on average 216.5) internal successors, (2165), 10 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:29,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:41:29,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 612 [2023-08-27 00:41:29,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:41:40,220 INFO L124 PetriNetUnfolderBase]: 31073/48193 cut-off events. [2023-08-27 00:41:40,220 INFO L125 PetriNetUnfolderBase]: For 835176/835176 co-relation queries the response was YES. [2023-08-27 00:41:40,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317036 conditions, 48193 events. 31073/48193 cut-off events. For 835176/835176 co-relation queries the response was YES. Maximal size of possible extension queue 2255. Compared 361097 event pairs, 11677 based on Foata normal form. 120/34545 useless extension candidates. Maximal degree in co-relation 316925. Up to 38652 conditions per place. [2023-08-27 00:41:41,057 INFO L140 encePairwiseOnDemand]: 604/612 looper letters, 471 selfloop transitions, 140 changer transitions 0/611 dead transitions. [2023-08-27 00:41:41,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 611 transitions, 11161 flow [2023-08-27 00:41:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 00:41:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 00:41:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1818 transitions. [2023-08-27 00:41:41,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3713235294117647 [2023-08-27 00:41:41,059 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1818 transitions. [2023-08-27 00:41:41,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1818 transitions. [2023-08-27 00:41:41,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:41:41,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1818 transitions. [2023-08-27 00:41:41,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 227.25) internal successors, (1818), 8 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:41,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 612.0) internal successors, (5508), 9 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:41,063 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 612.0) internal successors, (5508), 9 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:41,063 INFO L175 Difference]: Start difference. First operand has 327 places, 559 transitions, 9563 flow. Second operand 8 states and 1818 transitions. [2023-08-27 00:41:41,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 611 transitions, 11161 flow [2023-08-27 00:41:47,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 611 transitions, 11027 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 00:41:47,248 INFO L231 Difference]: Finished difference. Result has 330 places, 555 transitions, 9633 flow [2023-08-27 00:41:47,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=9353, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9633, PETRI_PLACES=330, PETRI_TRANSITIONS=555} [2023-08-27 00:41:47,249 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 263 predicate places. [2023-08-27 00:41:47,249 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 555 transitions, 9633 flow [2023-08-27 00:41:47,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 216.5) internal successors, (2165), 10 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:47,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:41:47,249 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:41:47,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 00:41:47,455 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 00:41:47,455 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:41:47,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:41:47,455 INFO L85 PathProgramCache]: Analyzing trace with hash -7551927, now seen corresponding path program 1 times [2023-08-27 00:41:47,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:41:47,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334012378] [2023-08-27 00:41:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:41:47,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:41:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:41:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:41:47,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:41:47,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334012378] [2023-08-27 00:41:47,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334012378] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:41:47,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107205245] [2023-08-27 00:41:47,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:41:47,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:41:47,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:41:47,557 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:41:47,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 00:41:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:41:47,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 00:41:47,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:41:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:41:47,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:41:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:41:47,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107205245] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:41:47,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:41:47,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 00:41:47,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071089401] [2023-08-27 00:41:47,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:41:47,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:41:47,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:41:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:41:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-27 00:41:47,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 612 [2023-08-27 00:41:47,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 555 transitions, 9633 flow. Second operand has 12 states, 12 states have (on average 218.33333333333334) internal successors, (2620), 12 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:41:47,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:41:47,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 612 [2023-08-27 00:41:47,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:42:03,260 INFO L124 PetriNetUnfolderBase]: 44791/70909 cut-off events. [2023-08-27 00:42:03,260 INFO L125 PetriNetUnfolderBase]: For 1638582/1638582 co-relation queries the response was YES. [2023-08-27 00:42:04,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448471 conditions, 70909 events. 44791/70909 cut-off events. For 1638582/1638582 co-relation queries the response was YES. Maximal size of possible extension queue 3160. Compared 578067 event pairs, 24229 based on Foata normal form. 5604/56225 useless extension candidates. Maximal degree in co-relation 448360. Up to 46211 conditions per place. [2023-08-27 00:42:04,632 INFO L140 encePairwiseOnDemand]: 600/612 looper letters, 736 selfloop transitions, 142 changer transitions 74/952 dead transitions. [2023-08-27 00:42:04,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 952 transitions, 18404 flow [2023-08-27 00:42:04,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 00:42:04,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 00:42:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2486 transitions. [2023-08-27 00:42:04,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.369281045751634 [2023-08-27 00:42:04,635 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2486 transitions. [2023-08-27 00:42:04,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2486 transitions. [2023-08-27 00:42:04,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:42:04,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2486 transitions. [2023-08-27 00:42:04,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 226.0) internal successors, (2486), 11 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:42:04,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 612.0) internal successors, (7344), 12 states have internal predecessors, (7344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:42:04,642 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 612.0) internal successors, (7344), 12 states have internal predecessors, (7344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:42:04,642 INFO L175 Difference]: Start difference. First operand has 330 places, 555 transitions, 9633 flow. Second operand 11 states and 2486 transitions. [2023-08-27 00:42:04,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 952 transitions, 18404 flow [2023-08-27 00:42:14,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 952 transitions, 18302 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 00:42:14,663 INFO L231 Difference]: Finished difference. Result has 342 places, 624 transitions, 11897 flow [2023-08-27 00:42:14,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=9553, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11897, PETRI_PLACES=342, PETRI_TRANSITIONS=624} [2023-08-27 00:42:14,663 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 275 predicate places. [2023-08-27 00:42:14,663 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 624 transitions, 11897 flow [2023-08-27 00:42:14,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 218.33333333333334) internal successors, (2620), 12 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:42:14,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:42:14,664 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:42:14,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 00:42:14,864 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 00:42:14,865 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:42:14,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:42:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash -754288562, now seen corresponding path program 4 times [2023-08-27 00:42:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:42:14,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007012705] [2023-08-27 00:42:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:42:14,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:42:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:42:15,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:42:15,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:42:15,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007012705] [2023-08-27 00:42:15,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007012705] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:42:15,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64681894] [2023-08-27 00:42:15,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 00:42:15,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:42:15,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:42:15,593 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 00:42:15,600 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 00:42:15,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 00:42:15,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:42:15,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 00:42:15,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:42:15,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:42:15,939 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 00:42:15,966 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 23 treesize of output 7 [2023-08-27 00:42:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 00:42:15,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:42:16,031 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1558 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1558) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) |c_thread2Thread1of1ForFork0_~s~0#1|) 2147483648)) is different from false [2023-08-27 00:42:16,038 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 00:42:16,039 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 45 treesize of output 37 [2023-08-27 00:42:16,041 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 11 treesize of output 5 [2023-08-27 00:42:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:42:16,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64681894] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 00:42:16,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 00:42:16,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 8] total 24 [2023-08-27 00:42:16,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886883265] [2023-08-27 00:42:16,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:42:16,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 00:42:16,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:42:16,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 00:42:16,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=521, Unknown=1, NotChecked=46, Total=650 [2023-08-27 00:42:16,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 612 [2023-08-27 00:42:16,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 624 transitions, 11897 flow. Second operand has 9 states, 9 states have (on average 219.66666666666666) internal successors, (1977), 9 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:42:16,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:42:16,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 612 [2023-08-27 00:42:16,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:42:34,967 INFO L124 PetriNetUnfolderBase]: 41544/64806 cut-off events. [2023-08-27 00:42:34,967 INFO L125 PetriNetUnfolderBase]: For 1221041/1221041 co-relation queries the response was YES. [2023-08-27 00:42:36,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420817 conditions, 64806 events. 41544/64806 cut-off events. For 1221041/1221041 co-relation queries the response was YES. Maximal size of possible extension queue 3162. Compared 515941 event pairs, 14411 based on Foata normal form. 103/45725 useless extension candidates. Maximal degree in co-relation 420703. Up to 39344 conditions per place. [2023-08-27 00:42:36,460 INFO L140 encePairwiseOnDemand]: 598/612 looper letters, 546 selfloop transitions, 129 changer transitions 0/675 dead transitions. [2023-08-27 00:42:36,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 675 transitions, 13665 flow [2023-08-27 00:42:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 00:42:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 00:42:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2062 transitions. [2023-08-27 00:42:36,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3743645606390704 [2023-08-27 00:42:36,462 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2062 transitions. [2023-08-27 00:42:36,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2062 transitions. [2023-08-27 00:42:36,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:42:36,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2062 transitions. [2023-08-27 00:42:36,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 229.11111111111111) internal successors, (2062), 9 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:42:36,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 612.0) internal successors, (6120), 10 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:42:36,467 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 612.0) internal successors, (6120), 10 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:42:36,467 INFO L175 Difference]: Start difference. First operand has 342 places, 624 transitions, 11897 flow. Second operand 9 states and 2062 transitions. [2023-08-27 00:42:36,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 675 transitions, 13665 flow [2023-08-27 00:42:44,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 675 transitions, 13184 flow, removed 131 selfloop flow, removed 11 redundant places. [2023-08-27 00:42:44,704 INFO L231 Difference]: Finished difference. Result has 330 places, 627 transitions, 11895 flow [2023-08-27 00:42:44,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=612, PETRI_DIFFERENCE_MINUEND_FLOW=11254, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11895, PETRI_PLACES=330, PETRI_TRANSITIONS=627} [2023-08-27 00:42:44,705 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 263 predicate places. [2023-08-27 00:42:44,705 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 627 transitions, 11895 flow [2023-08-27 00:42:44,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 219.66666666666666) internal successors, (1977), 9 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:42:44,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:42:44,705 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:42:44,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 00:42:44,906 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 00:42:44,906 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-27 00:42:44,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:42:44,906 INFO L85 PathProgramCache]: Analyzing trace with hash -175492542, now seen corresponding path program 2 times [2023-08-27 00:42:44,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:42:44,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995587925] [2023-08-27 00:42:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:42:44,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:42:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:42:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:42:45,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:42:45,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995587925] [2023-08-27 00:42:45,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995587925] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:42:45,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901511497] [2023-08-27 00:42:45,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:42:45,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:42:45,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:42:45,773 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 00:42:45,804 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 00:42:45,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:42:45,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:42:45,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 00:42:46,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:42:46,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 00:42:46,101 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 18 treesize of output 20 [2023-08-27 00:42:46,122 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 23 treesize of output 7 [2023-08-27 00:42:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 00:42:46,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:42:46,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901511497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:42:46,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:42:46,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 16 [2023-08-27 00:42:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638401679] [2023-08-27 00:42:46,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:42:46,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 00:42:46,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:42:46,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 00:42:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-08-27 00:42:46,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 612 [2023-08-27 00:42:46,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 627 transitions, 11895 flow. Second operand has 8 states, 8 states have (on average 220.875) internal successors, (1767), 8 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:42:46,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:42:46,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 612 [2023-08-27 00:42:46,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand