/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 01:03:52,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 01:03:52,788 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 01:03:52,793 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 01:03:52,793 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 01:03:52,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 01:03:52,820 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 01:03:52,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 01:03:52,824 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 01:03:52,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 01:03:52,828 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 01:03:52,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 01:03:52,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 01:03:52,829 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 01:03:52,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 01:03:52,829 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 01:03:52,829 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 01:03:52,829 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 01:03:52,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 01:03:52,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 01:03:52,830 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 01:03:52,831 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 01:03:52,831 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 01:03:52,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 01:03:52,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 01:03:52,831 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 01:03:52,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 01:03:52,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:03:52,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 01:03:52,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 01:03:52,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 01:03:52,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 01:03:52,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 01:03:52,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 01:03:52,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 01:03:52,833 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 01:03:53,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 01:03:53,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 01:03:53,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 01:03:53,089 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 01:03:53,090 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 01:03:53,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2023-08-27 01:03:54,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 01:03:54,264 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 01:03:54,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2023-08-27 01:03:54,273 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a705b51de/f966d517d5dc4bca8a3ad8e4e97ce2fd/FLAG32d546cb7 [2023-08-27 01:03:54,293 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a705b51de/f966d517d5dc4bca8a3ad8e4e97ce2fd [2023-08-27 01:03:54,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 01:03:54,300 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 01:03:54,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 01:03:54,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 01:03:54,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 01:03:54,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638de40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54, skipping insertion in model container [2023-08-27 01:03:54,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,324 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 01:03:54,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:03:54,482 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 01:03:54,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:03:54,525 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:03:54,526 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:03:54,530 INFO L206 MainTranslator]: Completed translation [2023-08-27 01:03:54,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54 WrapperNode [2023-08-27 01:03:54,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 01:03:54,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 01:03:54,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 01:03:54,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 01:03:54,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,572 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 149 [2023-08-27 01:03:54,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 01:03:54,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 01:03:54,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 01:03:54,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 01:03:54,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,605 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,608 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,610 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,629 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 01:03:54,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 01:03:54,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 01:03:54,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 01:03:54,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (1/1) ... [2023-08-27 01:03:54,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:03:54,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:03:54,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 01:03:54,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 01:03:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 01:03:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 01:03:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 01:03:54,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 01:03:54,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 01:03:54,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 01:03:54,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 01:03:54,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 01:03:54,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 01:03:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 01:03:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 01:03:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 01:03:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 01:03:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 01:03:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 01:03:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 01:03:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 01:03:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 01:03:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 01:03:54,740 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 01:03:54,841 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 01:03:54,844 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 01:03:55,107 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 01:03:55,203 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 01:03:55,203 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 01:03:55,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:03:55 BoogieIcfgContainer [2023-08-27 01:03:55,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 01:03:55,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 01:03:55,206 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 01:03:55,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 01:03:55,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:03:54" (1/3) ... [2023-08-27 01:03:55,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2a228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:03:55, skipping insertion in model container [2023-08-27 01:03:55,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:03:54" (2/3) ... [2023-08-27 01:03:55,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2a228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:03:55, skipping insertion in model container [2023-08-27 01:03:55,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:03:55" (3/3) ... [2023-08-27 01:03:55,210 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2023-08-27 01:03:55,246 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 01:03:55,246 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-27 01:03:55,246 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 01:03:55,338 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 01:03:55,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 187 transitions, 406 flow [2023-08-27 01:03:55,449 INFO L124 PetriNetUnfolderBase]: 12/183 cut-off events. [2023-08-27 01:03:55,449 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 01:03:55,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 183 events. 12/183 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 217 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 148. Up to 2 conditions per place. [2023-08-27 01:03:55,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 187 transitions, 406 flow [2023-08-27 01:03:55,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 170 transitions, 364 flow [2023-08-27 01:03:55,460 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 01:03:55,466 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 170 transitions, 364 flow [2023-08-27 01:03:55,468 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 170 transitions, 364 flow [2023-08-27 01:03:55,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 170 transitions, 364 flow [2023-08-27 01:03:55,491 INFO L124 PetriNetUnfolderBase]: 12/170 cut-off events. [2023-08-27 01:03:55,491 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 01:03:55,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 170 events. 12/170 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 148. Up to 2 conditions per place. [2023-08-27 01:03:55,494 INFO L119 LiptonReduction]: Number of co-enabled transitions 4200 [2023-08-27 01:04:00,587 INFO L134 LiptonReduction]: Checked pairs total: 5985 [2023-08-27 01:04:00,588 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-08-27 01:04:00,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 01:04:00,610 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;@60225957, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 01:04:00,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-27 01:04:00,612 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 01:04:00,612 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 01:04:00,612 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:04:00,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:00,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 01:04:00,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:00,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:00,617 INFO L85 PathProgramCache]: Analyzing trace with hash 25351, now seen corresponding path program 1 times [2023-08-27 01:04:00,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:00,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827572550] [2023-08-27 01:04:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:00,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:00,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827572550] [2023-08-27 01:04:00,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827572550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:00,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:04:00,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:04:00,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198590625] [2023-08-27 01:04:00,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:00,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:00,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:00,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:04:00,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 352 [2023-08-27 01:04:00,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:00,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:00,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 352 [2023-08-27 01:04:00,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:01,657 INFO L124 PetriNetUnfolderBase]: 7435/9512 cut-off events. [2023-08-27 01:04:01,658 INFO L125 PetriNetUnfolderBase]: For 290/290 co-relation queries the response was YES. [2023-08-27 01:04:01,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19666 conditions, 9512 events. 7435/9512 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 43807 event pairs, 5195 based on Foata normal form. 0/4484 useless extension candidates. Maximal degree in co-relation 17376. Up to 9500 conditions per place. [2023-08-27 01:04:01,714 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 39 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-27 01:04:01,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 194 flow [2023-08-27 01:04:01,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-27 01:04:01,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753787878787879 [2023-08-27 01:04:01,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-27 01:04:01,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-27 01:04:01,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:01,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-27 01:04:01,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:01,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:01,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:01,745 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 110 flow. Second operand 3 states and 502 transitions. [2023-08-27 01:04:01,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 194 flow [2023-08-27 01:04:01,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 01:04:01,773 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 111 flow [2023-08-27 01:04:01,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-08-27 01:04:01,777 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2023-08-27 01:04:01,777 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 111 flow [2023-08-27 01:04:01,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:01,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:01,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:04:01,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 01:04:01,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:01,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:01,780 INFO L85 PathProgramCache]: Analyzing trace with hash 786990, now seen corresponding path program 1 times [2023-08-27 01:04:01,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:01,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617545863] [2023-08-27 01:04:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:01,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:01,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:01,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617545863] [2023-08-27 01:04:01,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617545863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:01,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:04:01,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:04:01,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530832016] [2023-08-27 01:04:01,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:01,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:01,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:01,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:04:01,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 352 [2023-08-27 01:04:01,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:01,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:01,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 352 [2023-08-27 01:04:01,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:02,456 INFO L124 PetriNetUnfolderBase]: 7435/9511 cut-off events. [2023-08-27 01:04:02,457 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:04:02,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19281 conditions, 9511 events. 7435/9511 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 43894 event pairs, 5195 based on Foata normal form. 0/4484 useless extension candidates. Maximal degree in co-relation 19257. Up to 9496 conditions per place. [2023-08-27 01:04:02,503 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 38 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-27 01:04:02,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 189 flow [2023-08-27 01:04:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:02,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-27 01:04:02,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-08-27 01:04:02,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-27 01:04:02,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-27 01:04:02,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:02,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-27 01:04:02,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:02,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:02,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:02,509 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 111 flow. Second operand 3 states and 496 transitions. [2023-08-27 01:04:02,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 189 flow [2023-08-27 01:04:02,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 184 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 01:04:02,510 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 108 flow [2023-08-27 01:04:02,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-08-27 01:04:02,511 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2023-08-27 01:04:02,511 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 108 flow [2023-08-27 01:04:02,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:02,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:02,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:04:02,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 01:04:02,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:02,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:02,512 INFO L85 PathProgramCache]: Analyzing trace with hash 787003, now seen corresponding path program 1 times [2023-08-27 01:04:02,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:02,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745918179] [2023-08-27 01:04:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:02,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:02,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:02,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745918179] [2023-08-27 01:04:02,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745918179] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:02,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878305025] [2023-08-27 01:04:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:02,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:02,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:02,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:02,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 01:04:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:02,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:04:02,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:02,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:02,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878305025] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:02,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:02,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:04:02,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913157] [2023-08-27 01:04:02,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:02,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:04:02,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:02,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:04:02,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:04:02,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 352 [2023-08-27 01:04:02,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:02,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:02,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 352 [2023-08-27 01:04:02,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:03,227 INFO L124 PetriNetUnfolderBase]: 7438/9517 cut-off events. [2023-08-27 01:04:03,227 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 01:04:03,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19302 conditions, 9517 events. 7438/9517 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 43996 event pairs, 5195 based on Foata normal form. 0/4492 useless extension candidates. Maximal degree in co-relation 19257. Up to 9502 conditions per place. [2023-08-27 01:04:03,254 INFO L140 encePairwiseOnDemand]: 348/352 looper letters, 38 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2023-08-27 01:04:03,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 232 flow [2023-08-27 01:04:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:04:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:04:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 962 transitions. [2023-08-27 01:04:03,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45549242424242425 [2023-08-27 01:04:03,257 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 962 transitions. [2023-08-27 01:04:03,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 962 transitions. [2023-08-27 01:04:03,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:03,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 962 transitions. [2023-08-27 01:04:03,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:03,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:03,263 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:03,263 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 108 flow. Second operand 6 states and 962 transitions. [2023-08-27 01:04:03,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 232 flow [2023-08-27 01:04:03,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:04:03,264 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 163 flow [2023-08-27 01:04:03,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-27 01:04:03,266 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2023-08-27 01:04:03,266 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 163 flow [2023-08-27 01:04:03,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.14285714285714) internal successors, (1072), 7 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:03,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:03,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:04:03,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 01:04:03,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:03,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:03,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:03,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1972193309, now seen corresponding path program 1 times [2023-08-27 01:04:03,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:03,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614497905] [2023-08-27 01:04:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:03,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:03,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:03,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614497905] [2023-08-27 01:04:03,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614497905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:03,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:04:03,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:04:03,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409260038] [2023-08-27 01:04:03,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:03,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:03,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:03,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:04:03,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-08-27 01:04:03,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:03,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:03,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-08-27 01:04:03,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:04,139 INFO L124 PetriNetUnfolderBase]: 8858/11239 cut-off events. [2023-08-27 01:04:04,139 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 01:04:04,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22806 conditions, 11239 events. 8858/11239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 52830 event pairs, 5195 based on Foata normal form. 0/5305 useless extension candidates. Maximal degree in co-relation 22770. Up to 9810 conditions per place. [2023-08-27 01:04:04,175 INFO L140 encePairwiseOnDemand]: 347/352 looper letters, 66 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-27 01:04:04,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 348 flow [2023-08-27 01:04:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:04,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:04,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-27 01:04:04,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4971590909090909 [2023-08-27 01:04:04,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-27 01:04:04,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-27 01:04:04,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:04,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-27 01:04:04,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:04,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:04,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:04,181 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 163 flow. Second operand 3 states and 525 transitions. [2023-08-27 01:04:04,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 348 flow [2023-08-27 01:04:04,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 327 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 01:04:04,183 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 163 flow [2023-08-27 01:04:04,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-08-27 01:04:04,185 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-08-27 01:04:04,185 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 163 flow [2023-08-27 01:04:04,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:04,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:04,185 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 01:04:04,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 01:04:04,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:04,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:04,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1971483860, now seen corresponding path program 2 times [2023-08-27 01:04:04,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:04,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077440692] [2023-08-27 01:04:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:04,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:04,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:04,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077440692] [2023-08-27 01:04:04,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077440692] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:04,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250851488] [2023-08-27 01:04:04,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:04:04,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:04,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:04,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:04,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 01:04:04,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:04:04,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:04:04,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 01:04:04,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 01:04:04,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:04:04,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250851488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:04,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:04:04,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 01:04:04,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705497744] [2023-08-27 01:04:04,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:04,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:04,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:04,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:04:04,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 352 [2023-08-27 01:04:04,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:04,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:04,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 352 [2023-08-27 01:04:04,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:04,970 INFO L124 PetriNetUnfolderBase]: 8842/11222 cut-off events. [2023-08-27 01:04:04,970 INFO L125 PetriNetUnfolderBase]: For 1500/1500 co-relation queries the response was YES. [2023-08-27 01:04:04,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25458 conditions, 11222 events. 8842/11222 cut-off events. For 1500/1500 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 51697 event pairs, 6017 based on Foata normal form. 1/5299 useless extension candidates. Maximal degree in co-relation 25431. Up to 11208 conditions per place. [2023-08-27 01:04:05,001 INFO L140 encePairwiseOnDemand]: 350/352 looper letters, 47 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-08-27 01:04:05,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 249 flow [2023-08-27 01:04:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-27 01:04:05,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2023-08-27 01:04:05,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-27 01:04:05,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-27 01:04:05,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:05,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-27 01:04:05,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:05,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:05,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:05,006 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 163 flow. Second operand 3 states and 498 transitions. [2023-08-27 01:04:05,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 249 flow [2023-08-27 01:04:05,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 228 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 01:04:05,008 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 134 flow [2023-08-27 01:04:05,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-08-27 01:04:05,008 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2023-08-27 01:04:05,009 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 134 flow [2023-08-27 01:04:05,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:05,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:05,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:05,015 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 01:04:05,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:05,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:05,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:05,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1008451137, now seen corresponding path program 1 times [2023-08-27 01:04:05,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:05,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008324656] [2023-08-27 01:04:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:05,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:05,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:05,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008324656] [2023-08-27 01:04:05,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008324656] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:05,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388506831] [2023-08-27 01:04:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:05,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:05,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:05,246 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:05,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 01:04:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:05,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 01:04:05,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:04:05,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:04:05,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388506831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:05,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:04:05,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-27 01:04:05,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585689886] [2023-08-27 01:04:05,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:05,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:05,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:05,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:05,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:04:05,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 352 [2023-08-27 01:04:05,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:05,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:05,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 352 [2023-08-27 01:04:05,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:05,948 INFO L124 PetriNetUnfolderBase]: 8841/11221 cut-off events. [2023-08-27 01:04:05,948 INFO L125 PetriNetUnfolderBase]: For 894/894 co-relation queries the response was YES. [2023-08-27 01:04:05,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24542 conditions, 11221 events. 8841/11221 cut-off events. For 894/894 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 51659 event pairs, 6017 based on Foata normal form. 1/5598 useless extension candidates. Maximal degree in co-relation 24533. Up to 11207 conditions per place. [2023-08-27 01:04:05,980 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 45 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-27 01:04:05,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 224 flow [2023-08-27 01:04:05,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:05,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:05,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-08-27 01:04:05,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-27 01:04:05,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-08-27 01:04:05,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-08-27 01:04:05,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:05,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-08-27 01:04:05,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:05,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:05,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:05,985 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 134 flow. Second operand 3 states and 484 transitions. [2023-08-27 01:04:05,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 224 flow [2023-08-27 01:04:05,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:04:05,987 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 133 flow [2023-08-27 01:04:05,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-08-27 01:04:05,987 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2023-08-27 01:04:05,987 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 133 flow [2023-08-27 01:04:05,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:05,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:05,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:05,993 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 01:04:06,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:06,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:06,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash 537427834, now seen corresponding path program 1 times [2023-08-27 01:04:06,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:06,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760586560] [2023-08-27 01:04:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:06,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:04:06,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760586560] [2023-08-27 01:04:06,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760586560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:06,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354596080] [2023-08-27 01:04:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:06,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:06,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:06,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:06,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 01:04:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:06,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:04:06,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:06,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:06,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354596080] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:06,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:06,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-27 01:04:06,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568089158] [2023-08-27 01:04:06,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:06,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:04:06,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:06,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:04:06,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:04:06,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:04:06,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 133 flow. Second operand has 13 states, 13 states have (on average 135.69230769230768) internal successors, (1764), 13 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:06,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:06,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:04:06,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:07,592 INFO L124 PetriNetUnfolderBase]: 15215/19308 cut-off events. [2023-08-27 01:04:07,592 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2023-08-27 01:04:07,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42472 conditions, 19308 events. 15215/19308 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 95800 event pairs, 6410 based on Foata normal form. 0/10101 useless extension candidates. Maximal degree in co-relation 42462. Up to 8127 conditions per place. [2023-08-27 01:04:07,661 INFO L140 encePairwiseOnDemand]: 342/352 looper letters, 144 selfloop transitions, 14 changer transitions 0/159 dead transitions. [2023-08-27 01:04:07,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 159 transitions, 703 flow [2023-08-27 01:04:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:04:07,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:04:07,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1370 transitions. [2023-08-27 01:04:07,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432449494949495 [2023-08-27 01:04:07,668 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1370 transitions. [2023-08-27 01:04:07,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1370 transitions. [2023-08-27 01:04:07,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:07,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1370 transitions. [2023-08-27 01:04:07,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.22222222222223) internal successors, (1370), 9 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:07,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:07,679 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:07,679 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 133 flow. Second operand 9 states and 1370 transitions. [2023-08-27 01:04:07,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 159 transitions, 703 flow [2023-08-27 01:04:07,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 159 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:04:07,684 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 229 flow [2023-08-27 01:04:07,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=229, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-08-27 01:04:07,685 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2023-08-27 01:04:07,685 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 229 flow [2023-08-27 01:04:07,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 135.69230769230768) internal successors, (1764), 13 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:07,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:07,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:07,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 01:04:07,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:07,895 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:07,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:07,895 INFO L85 PathProgramCache]: Analyzing trace with hash -342827932, now seen corresponding path program 1 times [2023-08-27 01:04:07,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:07,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631607052] [2023-08-27 01:04:07,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:07,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:04:07,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:07,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631607052] [2023-08-27 01:04:07,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631607052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:07,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:04:07,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:04:07,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337803201] [2023-08-27 01:04:07,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:07,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:07,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:07,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:07,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:04:07,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-08-27 01:04:07,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:07,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:07,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-08-27 01:04:07,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:09,313 INFO L124 PetriNetUnfolderBase]: 18527/23310 cut-off events. [2023-08-27 01:04:09,313 INFO L125 PetriNetUnfolderBase]: For 27998/27998 co-relation queries the response was YES. [2023-08-27 01:04:09,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63403 conditions, 23310 events. 18527/23310 cut-off events. For 27998/27998 co-relation queries the response was YES. Maximal size of possible extension queue 1088. Compared 112907 event pairs, 10094 based on Foata normal form. 436/15423 useless extension candidates. Maximal degree in co-relation 63388. Up to 19973 conditions per place. [2023-08-27 01:04:09,403 INFO L140 encePairwiseOnDemand]: 347/352 looper letters, 82 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2023-08-27 01:04:09,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 545 flow [2023-08-27 01:04:09,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-08-27 01:04:09,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2023-08-27 01:04:09,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-08-27 01:04:09,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-08-27 01:04:09,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:09,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-08-27 01:04:09,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:09,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:09,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:09,409 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 229 flow. Second operand 3 states and 524 transitions. [2023-08-27 01:04:09,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 545 flow [2023-08-27 01:04:09,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 524 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 01:04:09,427 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 237 flow [2023-08-27 01:04:09,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-27 01:04:09,427 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2023-08-27 01:04:09,427 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 237 flow [2023-08-27 01:04:09,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:09,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:09,428 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:09,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 01:04:09,428 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:09,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:09,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2093533535, now seen corresponding path program 1 times [2023-08-27 01:04:09,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:09,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752561186] [2023-08-27 01:04:09,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:09,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 01:04:09,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:09,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752561186] [2023-08-27 01:04:09,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752561186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:09,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:04:09,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:04:09,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057051781] [2023-08-27 01:04:09,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:09,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:09,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:09,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:09,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:04:09,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-08-27 01:04:09,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:09,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:09,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-08-27 01:04:09,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:10,595 INFO L124 PetriNetUnfolderBase]: 16851/21282 cut-off events. [2023-08-27 01:04:10,595 INFO L125 PetriNetUnfolderBase]: For 15819/15824 co-relation queries the response was YES. [2023-08-27 01:04:10,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61369 conditions, 21282 events. 16851/21282 cut-off events. For 15819/15824 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 106921 event pairs, 5754 based on Foata normal form. 708/14220 useless extension candidates. Maximal degree in co-relation 61353. Up to 11667 conditions per place. [2023-08-27 01:04:10,687 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 69 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2023-08-27 01:04:10,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 77 transitions, 449 flow [2023-08-27 01:04:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:10,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-27 01:04:10,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2023-08-27 01:04:10,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-27 01:04:10,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-27 01:04:10,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:10,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-27 01:04:10,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:10,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:10,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:10,705 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 237 flow. Second operand 3 states and 520 transitions. [2023-08-27 01:04:10,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 77 transitions, 449 flow [2023-08-27 01:04:10,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 429 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 01:04:10,816 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 220 flow [2023-08-27 01:04:10,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-27 01:04:10,817 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2023-08-27 01:04:10,817 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 220 flow [2023-08-27 01:04:10,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:10,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:10,817 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:10,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 01:04:10,818 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:10,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:10,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2093533565, now seen corresponding path program 2 times [2023-08-27 01:04:10,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:10,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481417877] [2023-08-27 01:04:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:10,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:04:10,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481417877] [2023-08-27 01:04:10,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481417877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301709108] [2023-08-27 01:04:10,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:04:10,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:10,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:10,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:10,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 01:04:10,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:04:10,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:04:10,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:04:10,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 01:04:11,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:04:11,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301709108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:11,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:04:11,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 01:04:11,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293812398] [2023-08-27 01:04:11,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:11,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:11,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:11,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:11,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 01:04:11,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 352 [2023-08-27 01:04:11,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:11,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:11,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 352 [2023-08-27 01:04:11,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:11,742 INFO L124 PetriNetUnfolderBase]: 12377/15614 cut-off events. [2023-08-27 01:04:11,742 INFO L125 PetriNetUnfolderBase]: For 21059/21059 co-relation queries the response was YES. [2023-08-27 01:04:11,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41319 conditions, 15614 events. 12377/15614 cut-off events. For 21059/21059 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 71097 event pairs, 7918 based on Foata normal form. 931/11062 useless extension candidates. Maximal degree in co-relation 41304. Up to 15598 conditions per place. [2023-08-27 01:04:11,795 INFO L140 encePairwiseOnDemand]: 348/352 looper letters, 50 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-27 01:04:11,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 296 flow [2023-08-27 01:04:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:11,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:11,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-27 01:04:11,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46117424242424243 [2023-08-27 01:04:11,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-27 01:04:11,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-27 01:04:11,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:11,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-27 01:04:11,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:11,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:11,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:11,800 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 220 flow. Second operand 3 states and 487 transitions. [2023-08-27 01:04:11,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 296 flow [2023-08-27 01:04:11,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 273 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 01:04:11,813 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 173 flow [2023-08-27 01:04:11,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-08-27 01:04:11,814 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-08-27 01:04:11,814 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 173 flow [2023-08-27 01:04:11,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:11,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:11,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:11,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 01:04:12,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 01:04:12,019 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:12,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:12,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2031996057, now seen corresponding path program 1 times [2023-08-27 01:04:12,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:12,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137598914] [2023-08-27 01:04:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:12,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:04:12,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:12,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137598914] [2023-08-27 01:04:12,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137598914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:12,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:04:12,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:04:12,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342403858] [2023-08-27 01:04:12,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:12,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:12,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:12,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:04:12,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-08-27 01:04:12,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:12,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:12,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-08-27 01:04:12,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:12,935 INFO L124 PetriNetUnfolderBase]: 15367/19828 cut-off events. [2023-08-27 01:04:12,935 INFO L125 PetriNetUnfolderBase]: For 9246/9246 co-relation queries the response was YES. [2023-08-27 01:04:12,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50126 conditions, 19828 events. 15367/19828 cut-off events. For 9246/9246 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 87544 event pairs, 7964 based on Foata normal form. 0/14199 useless extension candidates. Maximal degree in co-relation 50112. Up to 14489 conditions per place. [2023-08-27 01:04:13,010 INFO L140 encePairwiseOnDemand]: 348/352 looper letters, 80 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-27 01:04:13,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 447 flow [2023-08-27 01:04:13,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-08-27 01:04:13,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914772727272727 [2023-08-27 01:04:13,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-08-27 01:04:13,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-08-27 01:04:13,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:13,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-08-27 01:04:13,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:13,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:13,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:13,021 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 173 flow. Second operand 3 states and 519 transitions. [2023-08-27 01:04:13,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 447 flow [2023-08-27 01:04:13,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:04:13,032 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 191 flow [2023-08-27 01:04:13,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-08-27 01:04:13,032 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2023-08-27 01:04:13,033 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 191 flow [2023-08-27 01:04:13,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:13,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:13,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:13,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 01:04:13,033 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:13,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:13,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2031996117, now seen corresponding path program 1 times [2023-08-27 01:04:13,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:13,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131667036] [2023-08-27 01:04:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:13,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:13,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:13,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131667036] [2023-08-27 01:04:13,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131667036] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:13,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726667758] [2023-08-27 01:04:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:13,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:13,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:13,285 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:13,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 01:04:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:13,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 01:04:13,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:13,447 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:04:13,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:13,493 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:13,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:13,526 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:13,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:13,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:13,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:13,610 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_463 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_463) c_~A~0.base) c_~A~0.offset) 2147483650))) is different from false [2023-08-27 01:04:13,714 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:13,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 01:04:13,731 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:13,733 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1075 [2023-08-27 01:04:13,754 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2023-08-27 01:04:13,767 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-08-27 01:04:13,771 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-27 01:04:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:13,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726667758] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:13,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:13,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-27 01:04:13,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160291160] [2023-08-27 01:04:13,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:13,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:04:13,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:04:13,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=239, Unknown=8, NotChecked=32, Total=342 [2023-08-27 01:04:13,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:04:13,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 191 flow. Second operand has 19 states, 19 states have (on average 123.52631578947368) internal successors, (2347), 19 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:13,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:13,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:04:13,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:15,383 INFO L124 PetriNetUnfolderBase]: 16437/21378 cut-off events. [2023-08-27 01:04:15,383 INFO L125 PetriNetUnfolderBase]: For 13231/13231 co-relation queries the response was YES. [2023-08-27 01:04:15,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59227 conditions, 21378 events. 16437/21378 cut-off events. For 13231/13231 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 96183 event pairs, 2412 based on Foata normal form. 66/16723 useless extension candidates. Maximal degree in co-relation 59212. Up to 17102 conditions per place. [2023-08-27 01:04:15,475 INFO L140 encePairwiseOnDemand]: 343/352 looper letters, 133 selfloop transitions, 14 changer transitions 0/147 dead transitions. [2023-08-27 01:04:15,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 147 transitions, 861 flow [2023-08-27 01:04:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:04:15,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:04:15,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1066 transitions. [2023-08-27 01:04:15,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37855113636363635 [2023-08-27 01:04:15,478 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1066 transitions. [2023-08-27 01:04:15,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1066 transitions. [2023-08-27 01:04:15,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:15,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1066 transitions. [2023-08-27 01:04:15,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.25) internal successors, (1066), 8 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:15,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:15,482 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:15,482 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 191 flow. Second operand 8 states and 1066 transitions. [2023-08-27 01:04:15,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 147 transitions, 861 flow [2023-08-27 01:04:15,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 147 transitions, 855 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:04:15,499 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 257 flow [2023-08-27 01:04:15,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=257, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2023-08-27 01:04:15,499 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2023-08-27 01:04:15,499 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 257 flow [2023-08-27 01:04:15,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 123.52631578947368) internal successors, (2347), 19 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:15,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:15,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:15,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 01:04:15,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:15,705 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:15,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2037729565, now seen corresponding path program 1 times [2023-08-27 01:04:15,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:15,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87261882] [2023-08-27 01:04:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:15,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:04:15,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:15,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87261882] [2023-08-27 01:04:15,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87261882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:15,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:04:15,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:04:15,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730972608] [2023-08-27 01:04:15,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:15,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:15,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:15,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:15,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:04:15,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-08-27 01:04:15,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:15,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:15,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-08-27 01:04:15,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:16,716 INFO L124 PetriNetUnfolderBase]: 13303/17405 cut-off events. [2023-08-27 01:04:16,717 INFO L125 PetriNetUnfolderBase]: For 12101/12217 co-relation queries the response was YES. [2023-08-27 01:04:16,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50102 conditions, 17405 events. 13303/17405 cut-off events. For 12101/12217 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 80257 event pairs, 4829 based on Foata normal form. 116/14628 useless extension candidates. Maximal degree in co-relation 50084. Up to 10076 conditions per place. [2023-08-27 01:04:16,790 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 86 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-08-27 01:04:16,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 574 flow [2023-08-27 01:04:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-08-27 01:04:16,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48579545454545453 [2023-08-27 01:04:16,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-08-27 01:04:16,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-08-27 01:04:16,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:16,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-08-27 01:04:16,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:16,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:16,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:16,794 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 257 flow. Second operand 3 states and 513 transitions. [2023-08-27 01:04:16,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 574 flow [2023-08-27 01:04:16,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 568 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 01:04:16,811 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 255 flow [2023-08-27 01:04:16,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=255, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-08-27 01:04:16,812 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2023-08-27 01:04:16,812 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 255 flow [2023-08-27 01:04:16,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:16,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:16,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:16,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 01:04:16,813 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:16,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:16,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1432633034, now seen corresponding path program 1 times [2023-08-27 01:04:16,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:16,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382391676] [2023-08-27 01:04:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:16,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:17,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:17,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382391676] [2023-08-27 01:04:17,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382391676] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:17,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506271575] [2023-08-27 01:04:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:17,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:17,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:17,153 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:17,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 01:04:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:17,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-27 01:04:17,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:17,300 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:04:17,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:17,338 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:17,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:17,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:17,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:17,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:17,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:17,446 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:17,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:17,542 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_553 (Array Int Int)) (v_ArrVal_555 (Array Int Int)) (v_ArrVal_554 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_553) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_554) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_555) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-27 01:04:19,885 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:19,886 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-27 01:04:19,896 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:19,897 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 2195 treesize of output 2163 [2023-08-27 01:04:19,911 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 125 [2023-08-27 01:04:19,919 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 256 treesize of output 240 [2023-08-27 01:04:19,927 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 117 treesize of output 115 [2023-08-27 01:04:19,952 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-08-27 01:04:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:20,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506271575] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:20,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:20,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-08-27 01:04:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284820416] [2023-08-27 01:04:20,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:20,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 01:04:20,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:20,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 01:04:20,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=360, Unknown=17, NotChecked=40, Total=506 [2023-08-27 01:04:20,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:04:20,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 255 flow. Second operand has 23 states, 23 states have (on average 120.43478260869566) internal successors, (2770), 23 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:20,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:20,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:04:20,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:21,240 INFO L124 PetriNetUnfolderBase]: 12315/15999 cut-off events. [2023-08-27 01:04:21,240 INFO L125 PetriNetUnfolderBase]: For 18406/18406 co-relation queries the response was YES. [2023-08-27 01:04:21,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49024 conditions, 15999 events. 12315/15999 cut-off events. For 18406/18406 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 68186 event pairs, 4596 based on Foata normal form. 457/14545 useless extension candidates. Maximal degree in co-relation 49006. Up to 9950 conditions per place. [2023-08-27 01:04:21,320 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 97 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2023-08-27 01:04:21,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 111 transitions, 681 flow [2023-08-27 01:04:21,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:04:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:04:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 905 transitions. [2023-08-27 01:04:21,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367288961038961 [2023-08-27 01:04:21,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 905 transitions. [2023-08-27 01:04:21,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 905 transitions. [2023-08-27 01:04:21,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:21,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 905 transitions. [2023-08-27 01:04:21,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.28571428571428) internal successors, (905), 7 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:21,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:21,335 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:21,335 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 255 flow. Second operand 7 states and 905 transitions. [2023-08-27 01:04:21,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 111 transitions, 681 flow [2023-08-27 01:04:21,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 111 transitions, 661 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 01:04:21,357 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 283 flow [2023-08-27 01:04:21,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=283, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-08-27 01:04:21,357 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2023-08-27 01:04:21,357 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 283 flow [2023-08-27 01:04:21,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 120.43478260869566) internal successors, (2770), 23 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:21,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:21,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:21,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 01:04:21,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:21,563 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:21,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:21,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1432633437, now seen corresponding path program 1 times [2023-08-27 01:04:21,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:21,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850315210] [2023-08-27 01:04:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:21,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:21,667 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 01:04:21,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:21,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850315210] [2023-08-27 01:04:21,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850315210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:21,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102884461] [2023-08-27 01:04:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:21,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:21,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:21,669 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:21,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 01:04:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:21,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 01:04:21,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:21,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:21,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102884461] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:21,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:21,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 01:04:21,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822276537] [2023-08-27 01:04:21,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:21,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 01:04:21,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:21,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 01:04:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-27 01:04:21,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:04:21,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 283 flow. Second operand has 14 states, 14 states have (on average 135.57142857142858) internal successors, (1898), 14 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:21,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:21,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:04:21,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:22,800 INFO L124 PetriNetUnfolderBase]: 11420/14968 cut-off events. [2023-08-27 01:04:22,800 INFO L125 PetriNetUnfolderBase]: For 21244/21244 co-relation queries the response was YES. [2023-08-27 01:04:22,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46954 conditions, 14968 events. 11420/14968 cut-off events. For 21244/21244 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 64614 event pairs, 6031 based on Foata normal form. 472/13499 useless extension candidates. Maximal degree in co-relation 46934. Up to 10785 conditions per place. [2023-08-27 01:04:22,863 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 120 selfloop transitions, 11 changer transitions 0/131 dead transitions. [2023-08-27 01:04:22,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 131 transitions, 804 flow [2023-08-27 01:04:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 01:04:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 01:04:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1042 transitions. [2023-08-27 01:04:22,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42288961038961037 [2023-08-27 01:04:22,866 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1042 transitions. [2023-08-27 01:04:22,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1042 transitions. [2023-08-27 01:04:22,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:22,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1042 transitions. [2023-08-27 01:04:22,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.85714285714286) internal successors, (1042), 7 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:22,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:22,870 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:22,870 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 283 flow. Second operand 7 states and 1042 transitions. [2023-08-27 01:04:22,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 131 transitions, 804 flow [2023-08-27 01:04:22,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 131 transitions, 782 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 01:04:22,896 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 380 flow [2023-08-27 01:04:22,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=380, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-08-27 01:04:22,896 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2023-08-27 01:04:22,896 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 380 flow [2023-08-27 01:04:22,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 135.57142857142858) internal successors, (1898), 14 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:22,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:22,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:22,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 01:04:23,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 01:04:23,101 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:23,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:23,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1432788061, now seen corresponding path program 1 times [2023-08-27 01:04:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:23,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296239749] [2023-08-27 01:04:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:23,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:23,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:04:23,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:23,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296239749] [2023-08-27 01:04:23,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296239749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:23,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:04:23,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:04:23,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94903696] [2023-08-27 01:04:23,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:23,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:23,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:23,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:23,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:04:23,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 352 [2023-08-27 01:04:23,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:23,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:23,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 352 [2023-08-27 01:04:23,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:23,924 INFO L124 PetriNetUnfolderBase]: 10664/13962 cut-off events. [2023-08-27 01:04:23,924 INFO L125 PetriNetUnfolderBase]: For 23204/24323 co-relation queries the response was YES. [2023-08-27 01:04:23,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47879 conditions, 13962 events. 10664/13962 cut-off events. For 23204/24323 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 66248 event pairs, 1223 based on Foata normal form. 1119/13326 useless extension candidates. Maximal degree in co-relation 47856. Up to 12514 conditions per place. [2023-08-27 01:04:24,008 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 96 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-27 01:04:24,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 799 flow [2023-08-27 01:04:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:24,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-08-27 01:04:24,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990530303030303 [2023-08-27 01:04:24,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-08-27 01:04:24,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-08-27 01:04:24,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:24,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-08-27 01:04:24,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:24,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:24,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:24,013 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 380 flow. Second operand 3 states and 527 transitions. [2023-08-27 01:04:24,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 799 flow [2023-08-27 01:04:24,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 102 transitions, 788 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 01:04:24,094 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 379 flow [2023-08-27 01:04:24,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-08-27 01:04:24,094 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2023-08-27 01:04:24,094 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 379 flow [2023-08-27 01:04:24,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:24,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:24,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:24,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 01:04:24,095 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:24,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:24,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1466756459, now seen corresponding path program 1 times [2023-08-27 01:04:24,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:24,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765283354] [2023-08-27 01:04:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:24,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:04:24,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:24,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765283354] [2023-08-27 01:04:24,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765283354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:24,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:04:24,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:04:24,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125214663] [2023-08-27 01:04:24,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:24,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:24,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:24,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:24,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:04:24,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 352 [2023-08-27 01:04:24,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:24,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:24,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 352 [2023-08-27 01:04:24,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:24,902 INFO L124 PetriNetUnfolderBase]: 9994/13116 cut-off events. [2023-08-27 01:04:24,902 INFO L125 PetriNetUnfolderBase]: For 21671/22751 co-relation queries the response was YES. [2023-08-27 01:04:24,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46560 conditions, 13116 events. 9994/13116 cut-off events. For 21671/22751 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 60930 event pairs, 1567 based on Foata normal form. 1248/13393 useless extension candidates. Maximal degree in co-relation 46536. Up to 10749 conditions per place. [2023-08-27 01:04:24,977 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 89 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2023-08-27 01:04:24,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 750 flow [2023-08-27 01:04:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:24,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-08-27 01:04:24,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2023-08-27 01:04:24,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-08-27 01:04:24,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-08-27 01:04:24,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:24,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-08-27 01:04:24,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:24,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:24,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:24,981 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 379 flow. Second operand 3 states and 524 transitions. [2023-08-27 01:04:24,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 750 flow [2023-08-27 01:04:25,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 744 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:04:25,026 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 386 flow [2023-08-27 01:04:25,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-08-27 01:04:25,027 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2023-08-27 01:04:25,027 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 386 flow [2023-08-27 01:04:25,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:25,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:25,027 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:25,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 01:04:25,027 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:25,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:25,028 INFO L85 PathProgramCache]: Analyzing trace with hash 103529810, now seen corresponding path program 1 times [2023-08-27 01:04:25,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:25,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536874580] [2023-08-27 01:04:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:25,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:04:25,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:25,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536874580] [2023-08-27 01:04:25,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536874580] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:25,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100352672] [2023-08-27 01:04:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:25,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:25,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:25,072 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:25,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 01:04:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:25,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:04:25,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 01:04:25,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:04:25,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100352672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:25,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:04:25,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 01:04:25,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528365902] [2023-08-27 01:04:25,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:25,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:04:25,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:25,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:04:25,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:04:25,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-08-27 01:04:25,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:25,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:25,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-08-27 01:04:25,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:25,858 INFO L124 PetriNetUnfolderBase]: 8475/11072 cut-off events. [2023-08-27 01:04:25,858 INFO L125 PetriNetUnfolderBase]: For 21711/21711 co-relation queries the response was YES. [2023-08-27 01:04:25,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39789 conditions, 11072 events. 8475/11072 cut-off events. For 21711/21711 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 45413 event pairs, 2045 based on Foata normal form. 318/10560 useless extension candidates. Maximal degree in co-relation 39764. Up to 4945 conditions per place. [2023-08-27 01:04:25,894 INFO L140 encePairwiseOnDemand]: 348/352 looper letters, 102 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2023-08-27 01:04:25,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 116 transitions, 812 flow [2023-08-27 01:04:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:04:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:04:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 686 transitions. [2023-08-27 01:04:25,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4872159090909091 [2023-08-27 01:04:25,896 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 686 transitions. [2023-08-27 01:04:25,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 686 transitions. [2023-08-27 01:04:25,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:25,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 686 transitions. [2023-08-27 01:04:25,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:25,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:25,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:25,899 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 386 flow. Second operand 4 states and 686 transitions. [2023-08-27 01:04:25,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 116 transitions, 812 flow [2023-08-27 01:04:25,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 116 transitions, 778 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 01:04:25,935 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 364 flow [2023-08-27 01:04:25,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2023-08-27 01:04:25,935 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2023-08-27 01:04:25,936 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 364 flow [2023-08-27 01:04:25,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:25,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:25,936 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:25,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-27 01:04:26,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 01:04:26,140 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:26,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash 103529750, now seen corresponding path program 2 times [2023-08-27 01:04:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:26,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117498837] [2023-08-27 01:04:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:26,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:26,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117498837] [2023-08-27 01:04:26,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117498837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709799997] [2023-08-27 01:04:26,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:04:26,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:26,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:26,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:26,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 01:04:26,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:04:26,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:04:26,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 01:04:26,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:26,646 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 01:04:26,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:26,680 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:04:26,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:26,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:04:26,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:26,744 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:04:26,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-27 01:04:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:26,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:31,145 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:31,145 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 32 treesize of output 33 [2023-08-27 01:04:31,163 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:31,164 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 311 treesize of output 299 [2023-08-27 01:04:31,169 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 67 treesize of output 63 [2023-08-27 01:04:31,173 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 134 treesize of output 118 [2023-08-27 01:04:31,177 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 62 treesize of output 54 [2023-08-27 01:04:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:31,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709799997] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:31,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:31,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-08-27 01:04:31,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910444399] [2023-08-27 01:04:31,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:31,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 01:04:31,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:31,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 01:04:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=548, Unknown=14, NotChecked=0, Total=650 [2023-08-27 01:04:31,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:04:31,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 364 flow. Second operand has 26 states, 26 states have (on average 123.38461538461539) internal successors, (3208), 26 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:31,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:31,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:04:31,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:32,519 INFO L124 PetriNetUnfolderBase]: 8627/11259 cut-off events. [2023-08-27 01:04:32,520 INFO L125 PetriNetUnfolderBase]: For 27491/27491 co-relation queries the response was YES. [2023-08-27 01:04:32,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40950 conditions, 11259 events. 8627/11259 cut-off events. For 27491/27491 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 45241 event pairs, 4973 based on Foata normal form. 35/10775 useless extension candidates. Maximal degree in co-relation 40927. Up to 10214 conditions per place. [2023-08-27 01:04:32,578 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 103 selfloop transitions, 15 changer transitions 0/118 dead transitions. [2023-08-27 01:04:32,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 839 flow [2023-08-27 01:04:32,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:04:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:04:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1053 transitions. [2023-08-27 01:04:32,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3739346590909091 [2023-08-27 01:04:32,582 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1053 transitions. [2023-08-27 01:04:32,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1053 transitions. [2023-08-27 01:04:32,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:32,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1053 transitions. [2023-08-27 01:04:32,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.625) internal successors, (1053), 8 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:32,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:32,588 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:32,588 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 364 flow. Second operand 8 states and 1053 transitions. [2023-08-27 01:04:32,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 839 flow [2023-08-27 01:04:32,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 118 transitions, 815 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:04:32,633 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 415 flow [2023-08-27 01:04:32,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=415, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2023-08-27 01:04:32,634 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2023-08-27 01:04:32,634 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 415 flow [2023-08-27 01:04:32,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 123.38461538461539) internal successors, (3208), 26 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:32,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:32,634 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:32,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 01:04:32,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:32,838 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:32,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:32,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1080768135, now seen corresponding path program 1 times [2023-08-27 01:04:32,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:32,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891492286] [2023-08-27 01:04:32,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:32,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:33,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:33,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891492286] [2023-08-27 01:04:33,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891492286] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:33,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424283386] [2023-08-27 01:04:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:33,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:33,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:33,233 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:33,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 01:04:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:33,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-27 01:04:33,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:33,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:04:33,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:33,435 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:33,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:33,466 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:33,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:33,498 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:33,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:33,521 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:33,532 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:04:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:33,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:33,613 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_887 (Array Int Int)) (v_ArrVal_888 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_888) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483650))) is different from false [2023-08-27 01:04:36,101 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:36,102 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 35 treesize of output 36 [2023-08-27 01:04:36,120 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:36,120 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 39171 treesize of output 38403 [2023-08-27 01:04:36,144 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 143 treesize of output 139 [2023-08-27 01:04:36,151 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 139 treesize of output 131 [2023-08-27 01:04:36,155 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 278 treesize of output 246 [2023-08-27 01:04:36,167 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 130 treesize of output 114 [2023-08-27 01:04:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424283386] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:36,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:36,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-27 01:04:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485814468] [2023-08-27 01:04:36,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:36,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 01:04:36,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:36,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 01:04:36,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=539, Unknown=13, NotChecked=48, Total=702 [2023-08-27 01:04:36,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:04:36,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 415 flow. Second operand has 27 states, 27 states have (on average 120.4074074074074) internal successors, (3251), 27 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:36,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:36,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:04:36,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:37,562 INFO L124 PetriNetUnfolderBase]: 9833/12748 cut-off events. [2023-08-27 01:04:37,562 INFO L125 PetriNetUnfolderBase]: For 28430/28430 co-relation queries the response was YES. [2023-08-27 01:04:37,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46510 conditions, 12748 events. 9833/12748 cut-off events. For 28430/28430 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 52109 event pairs, 4085 based on Foata normal form. 283/12455 useless extension candidates. Maximal degree in co-relation 46484. Up to 6360 conditions per place. [2023-08-27 01:04:37,608 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 121 selfloop transitions, 17 changer transitions 0/138 dead transitions. [2023-08-27 01:04:37,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 138 transitions, 943 flow [2023-08-27 01:04:37,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 01:04:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 01:04:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1056 transitions. [2023-08-27 01:04:37,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-08-27 01:04:37,611 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1056 transitions. [2023-08-27 01:04:37,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1056 transitions. [2023-08-27 01:04:37,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:37,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1056 transitions. [2023-08-27 01:04:37,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:37,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:37,615 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 352.0) internal successors, (3168), 9 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:37,615 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 415 flow. Second operand 8 states and 1056 transitions. [2023-08-27 01:04:37,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 138 transitions, 943 flow [2023-08-27 01:04:37,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 138 transitions, 917 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 01:04:37,672 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 452 flow [2023-08-27 01:04:37,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=452, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2023-08-27 01:04:37,672 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2023-08-27 01:04:37,672 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 452 flow [2023-08-27 01:04:37,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 120.4074074074074) internal successors, (3251), 27 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:37,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:37,673 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:37,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 01:04:37,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:37,877 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:37,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:37,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1085541422, now seen corresponding path program 3 times [2023-08-27 01:04:37,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:37,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732968618] [2023-08-27 01:04:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:37,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:37,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:37,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732968618] [2023-08-27 01:04:37,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732968618] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:37,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604507758] [2023-08-27 01:04:37,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:04:37,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:37,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:37,983 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:37,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 01:04:38,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 01:04:38,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:04:38,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 01:04:38,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:38,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:38,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604507758] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:38,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:38,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 01:04:38,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827393980] [2023-08-27 01:04:38,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:38,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:04:38,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:04:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-08-27 01:04:38,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:04:38,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 452 flow. Second operand has 19 states, 19 states have (on average 135.42105263157896) internal successors, (2573), 19 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:38,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:38,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:04:38,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:39,673 INFO L124 PetriNetUnfolderBase]: 15539/20145 cut-off events. [2023-08-27 01:04:39,673 INFO L125 PetriNetUnfolderBase]: For 51177/51177 co-relation queries the response was YES. [2023-08-27 01:04:39,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78576 conditions, 20145 events. 15539/20145 cut-off events. For 51177/51177 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 87968 event pairs, 6244 based on Foata normal form. 636/19871 useless extension candidates. Maximal degree in co-relation 78548. Up to 9079 conditions per place. [2023-08-27 01:04:39,779 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 167 selfloop transitions, 24 changer transitions 0/191 dead transitions. [2023-08-27 01:04:39,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 191 transitions, 1386 flow [2023-08-27 01:04:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 01:04:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 01:04:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1329 transitions. [2023-08-27 01:04:39,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41950757575757575 [2023-08-27 01:04:39,782 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1329 transitions. [2023-08-27 01:04:39,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1329 transitions. [2023-08-27 01:04:39,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:39,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1329 transitions. [2023-08-27 01:04:39,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.66666666666666) internal successors, (1329), 9 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:39,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:39,787 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:39,787 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 452 flow. Second operand 9 states and 1329 transitions. [2023-08-27 01:04:39,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 191 transitions, 1386 flow [2023-08-27 01:04:40,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 191 transitions, 1305 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-27 01:04:40,345 INFO L231 Difference]: Finished difference. Result has 88 places, 81 transitions, 608 flow [2023-08-27 01:04:40,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=608, PETRI_PLACES=88, PETRI_TRANSITIONS=81} [2023-08-27 01:04:40,346 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2023-08-27 01:04:40,346 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 81 transitions, 608 flow [2023-08-27 01:04:40,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 135.42105263157896) internal successors, (2573), 19 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:40,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:40,347 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:40,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 01:04:40,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-27 01:04:40,551 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:40,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:40,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1546069579, now seen corresponding path program 4 times [2023-08-27 01:04:40,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:40,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622772325] [2023-08-27 01:04:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:40,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:40,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622772325] [2023-08-27 01:04:40,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622772325] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:40,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753428708] [2023-08-27 01:04:40,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:04:40,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:40,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:40,996 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:40,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 01:04:41,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:04:41,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:04:41,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 01:04:41,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:41,246 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 01:04:41,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:41,278 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:04:41,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:41,310 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:04:41,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:41,350 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:04:41,407 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-27 01:04:41,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-27 01:04:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:41,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:43,629 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1035 (Array Int Int)) (v_ArrVal_1034 (Array Int Int)) (v_ArrVal_1033 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1033) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1034) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1035) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2023-08-27 01:04:43,642 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:43,642 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-08-27 01:04:43,648 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:43,648 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 311 treesize of output 299 [2023-08-27 01:04:43,658 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 138 treesize of output 130 [2023-08-27 01:04:43,662 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 130 treesize of output 114 [2023-08-27 01:04:43,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2023-08-27 01:04:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-08-27 01:04:43,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753428708] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:43,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:43,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2023-08-27 01:04:43,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940136012] [2023-08-27 01:04:43,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:43,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 01:04:43,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 01:04:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=818, Unknown=11, NotChecked=58, Total=992 [2023-08-27 01:04:43,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:04:43,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 81 transitions, 608 flow. Second operand has 32 states, 32 states have (on average 123.3125) internal successors, (3946), 32 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:43,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:43,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:04:43,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:45,979 INFO L124 PetriNetUnfolderBase]: 15691/20332 cut-off events. [2023-08-27 01:04:45,979 INFO L125 PetriNetUnfolderBase]: For 63652/63652 co-relation queries the response was YES. [2023-08-27 01:04:46,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80160 conditions, 20332 events. 15691/20332 cut-off events. For 63652/63652 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 87915 event pairs, 8797 based on Foata normal form. 35/19450 useless extension candidates. Maximal degree in co-relation 80130. Up to 19136 conditions per place. [2023-08-27 01:04:46,093 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 132 selfloop transitions, 19 changer transitions 0/151 dead transitions. [2023-08-27 01:04:46,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 151 transitions, 1241 flow [2023-08-27 01:04:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:04:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:04:46,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1310 transitions. [2023-08-27 01:04:46,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2023-08-27 01:04:46,095 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1310 transitions. [2023-08-27 01:04:46,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1310 transitions. [2023-08-27 01:04:46,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:46,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1310 transitions. [2023-08-27 01:04:46,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:46,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 352.0) internal successors, (3872), 11 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:46,099 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 352.0) internal successors, (3872), 11 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:46,099 INFO L175 Difference]: Start difference. First operand has 88 places, 81 transitions, 608 flow. Second operand 10 states and 1310 transitions. [2023-08-27 01:04:46,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 151 transitions, 1241 flow [2023-08-27 01:04:46,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 151 transitions, 1225 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-27 01:04:46,411 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 701 flow [2023-08-27 01:04:46,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=701, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2023-08-27 01:04:46,412 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2023-08-27 01:04:46,412 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 701 flow [2023-08-27 01:04:46,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 123.3125) internal successors, (3946), 32 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:46,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:46,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:46,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 01:04:46,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 01:04:46,616 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:46,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1044611722, now seen corresponding path program 1 times [2023-08-27 01:04:46,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:46,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239013837] [2023-08-27 01:04:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:46,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:04:46,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:46,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239013837] [2023-08-27 01:04:46,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239013837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:04:46,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:04:46,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:04:46,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472452952] [2023-08-27 01:04:46,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:04:46,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:04:46,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:46,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:04:46,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:04:46,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 352 [2023-08-27 01:04:46,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 701 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:46,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:46,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 352 [2023-08-27 01:04:46,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:47,889 INFO L124 PetriNetUnfolderBase]: 14286/18604 cut-off events. [2023-08-27 01:04:47,889 INFO L125 PetriNetUnfolderBase]: For 64519/65729 co-relation queries the response was YES. [2023-08-27 01:04:47,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74641 conditions, 18604 events. 14286/18604 cut-off events. For 64519/65729 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 87050 event pairs, 2710 based on Foata normal form. 1382/19048 useless extension candidates. Maximal degree in co-relation 74608. Up to 13597 conditions per place. [2023-08-27 01:04:48,013 INFO L140 encePairwiseOnDemand]: 349/352 looper letters, 134 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2023-08-27 01:04:48,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 142 transitions, 1461 flow [2023-08-27 01:04:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:04:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:04:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-08-27 01:04:48,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943181818181818 [2023-08-27 01:04:48,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-08-27 01:04:48,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-08-27 01:04:48,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:48,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-08-27 01:04:48,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:48,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:48,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:48,016 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 701 flow. Second operand 3 states and 522 transitions. [2023-08-27 01:04:48,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 142 transitions, 1461 flow [2023-08-27 01:04:48,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 142 transitions, 1395 flow, removed 27 selfloop flow, removed 4 redundant places. [2023-08-27 01:04:48,145 INFO L231 Difference]: Finished difference. Result has 95 places, 87 transitions, 669 flow [2023-08-27 01:04:48,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=669, PETRI_PLACES=95, PETRI_TRANSITIONS=87} [2023-08-27 01:04:48,145 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2023-08-27 01:04:48,145 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 87 transitions, 669 flow [2023-08-27 01:04:48,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:48,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:48,146 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:48,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 01:04:48,146 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:48,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash 683507824, now seen corresponding path program 2 times [2023-08-27 01:04:48,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:48,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514159641] [2023-08-27 01:04:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:48,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:48,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:48,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:48,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514159641] [2023-08-27 01:04:48,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514159641] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:48,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372487401] [2023-08-27 01:04:48,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:04:48,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:48,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:48,634 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:48,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 01:04:48,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:04:48,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:04:48,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 01:04:48,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:48,879 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:04:48,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:48,927 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:48,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:48,959 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:48,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:48,994 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:49,040 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:04:49,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:49,063 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:49,086 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:04:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:49,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:49,136 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1153 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1153) c_~A~0.base) (+ c_~A~0.offset (* 4 |c_thread3Thread1of1ForFork2_~i~2#1|) 4))))) is different from false [2023-08-27 01:04:49,141 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1151 Int) (v_ArrVal_1153 (Array Int Int))) (< 0 (+ (let ((.cse0 (* 4 |c_thread3Thread1of1ForFork2_~i~2#1|))) (select (select (store (store |c_#memory_int| c_~A~0.base (store (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset .cse0) v_ArrVal_1151)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1153) c_~A~0.base) (+ c_~A~0.offset .cse0 8))) 2147483650))) is different from false [2023-08-27 01:04:49,144 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1151 Int) (v_ArrVal_1153 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| c_~A~0.base (store (select |c_#memory_int| c_~A~0.base) c_~A~0.offset v_ArrVal_1151)) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1153) c_~A~0.base) (+ c_~A~0.offset 8))))) is different from false [2023-08-27 01:04:49,163 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1151 Int) (v_ArrVal_1153 (Array Int Int)) (v_ArrVal_1150 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1150))) (store .cse0 c_~A~0.base (store (select .cse0 c_~A~0.base) c_~A~0.offset v_ArrVal_1151))) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1153) c_~A~0.base) (+ c_~A~0.offset 8))))) is different from false [2023-08-27 01:04:49,275 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:49,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 53 [2023-08-27 01:04:49,284 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:49,285 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 309 treesize of output 303 [2023-08-27 01:04:49,289 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 290 treesize of output 274 [2023-08-27 01:04:49,295 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 274 treesize of output 242 [2023-08-27 01:04:49,299 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 234 [2023-08-27 01:04:49,306 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 114 [2023-08-27 01:04:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-27 01:04:49,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372487401] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:49,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:49,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2023-08-27 01:04:49,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700655131] [2023-08-27 01:04:49,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:49,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 01:04:49,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:49,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 01:04:49,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=16, NotChecked=244, Total=1190 [2023-08-27 01:04:49,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:04:49,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 87 transitions, 669 flow. Second operand has 35 states, 35 states have (on average 120.28571428571429) internal successors, (4210), 35 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:49,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:49,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:04:49,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:04:51,732 INFO L124 PetriNetUnfolderBase]: 16145/20869 cut-off events. [2023-08-27 01:04:51,733 INFO L125 PetriNetUnfolderBase]: For 74112/74112 co-relation queries the response was YES. [2023-08-27 01:04:51,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85541 conditions, 20869 events. 16145/20869 cut-off events. For 74112/74112 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 89462 event pairs, 7149 based on Foata normal form. 269/20164 useless extension candidates. Maximal degree in co-relation 85506. Up to 10596 conditions per place. [2023-08-27 01:04:51,830 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 164 selfloop transitions, 22 changer transitions 0/186 dead transitions. [2023-08-27 01:04:51,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 186 transitions, 1441 flow [2023-08-27 01:04:51,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 01:04:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 01:04:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1315 transitions. [2023-08-27 01:04:51,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37357954545454547 [2023-08-27 01:04:51,832 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1315 transitions. [2023-08-27 01:04:51,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1315 transitions. [2023-08-27 01:04:51,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:04:51,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1315 transitions. [2023-08-27 01:04:51,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 131.5) internal successors, (1315), 10 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:51,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 352.0) internal successors, (3872), 11 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:51,835 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 352.0) internal successors, (3872), 11 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:51,835 INFO L175 Difference]: Start difference. First operand has 95 places, 87 transitions, 669 flow. Second operand 10 states and 1315 transitions. [2023-08-27 01:04:51,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 186 transitions, 1441 flow [2023-08-27 01:04:52,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 186 transitions, 1413 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-27 01:04:52,179 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 742 flow [2023-08-27 01:04:52,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=742, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2023-08-27 01:04:52,180 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2023-08-27 01:04:52,180 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 742 flow [2023-08-27 01:04:52,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 120.28571428571429) internal successors, (4210), 35 states have internal predecessors, (4210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:52,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:04:52,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:04:52,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-27 01:04:52,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:52,385 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:04:52,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:04:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1980450043, now seen corresponding path program 1 times [2023-08-27 01:04:52,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:04:52,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751641122] [2023-08-27 01:04:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:52,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:04:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:52,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:04:52,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751641122] [2023-08-27 01:04:52,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751641122] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:04:52,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026461368] [2023-08-27 01:04:52,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:04:52,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:04:52,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:04:52,564 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:04:52,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 01:04:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:04:52,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-27 01:04:52,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:04:52,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:04:52,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:52,742 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:52,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:52,778 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:52,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:04:52,804 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:04:52,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-08-27 01:04:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:52,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:04:58,954 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:58,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-27 01:04:58,960 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:04:58,961 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 555 treesize of output 539 [2023-08-27 01:04:58,966 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2023-08-27 01:04:58,974 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-08-27 01:04:58,977 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-27 01:04:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:04:59,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026461368] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:04:59,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:04:59,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-27 01:04:59,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750118024] [2023-08-27 01:04:59,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:04:59,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 01:04:59,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:04:59,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 01:04:59,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=269, Unknown=6, NotChecked=0, Total=342 [2023-08-27 01:04:59,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-08-27 01:04:59,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 742 flow. Second operand has 19 states, 19 states have (on average 129.10526315789474) internal successors, (2453), 19 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:04:59,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:04:59,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-08-27 01:04:59,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:05:01,080 INFO L124 PetriNetUnfolderBase]: 21888/28381 cut-off events. [2023-08-27 01:05:01,080 INFO L125 PetriNetUnfolderBase]: For 139393/141163 co-relation queries the response was YES. [2023-08-27 01:05:01,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119034 conditions, 28381 events. 21888/28381 cut-off events. For 139393/141163 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 139811 event pairs, 2666 based on Foata normal form. 2344/29141 useless extension candidates. Maximal degree in co-relation 118999. Up to 13521 conditions per place. [2023-08-27 01:05:01,243 INFO L140 encePairwiseOnDemand]: 346/352 looper letters, 135 selfloop transitions, 16 changer transitions 0/157 dead transitions. [2023-08-27 01:05:01,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 157 transitions, 1495 flow [2023-08-27 01:05:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:05:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:05:01,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 828 transitions. [2023-08-27 01:05:01,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2023-08-27 01:05:01,244 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 828 transitions. [2023-08-27 01:05:01,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 828 transitions. [2023-08-27 01:05:01,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:05:01,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 828 transitions. [2023-08-27 01:05:01,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:01,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:01,247 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:01,247 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 742 flow. Second operand 6 states and 828 transitions. [2023-08-27 01:05:01,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 157 transitions, 1495 flow [2023-08-27 01:05:01,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 157 transitions, 1357 flow, removed 36 selfloop flow, removed 8 redundant places. [2023-08-27 01:05:01,786 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 707 flow [2023-08-27 01:05:01,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=707, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2023-08-27 01:05:01,786 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2023-08-27 01:05:01,786 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 707 flow [2023-08-27 01:05:01,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 129.10526315789474) internal successors, (2453), 19 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:01,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:05:01,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:05:01,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-27 01:05:01,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:05:01,991 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:05:01,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:05:01,991 INFO L85 PathProgramCache]: Analyzing trace with hash -593020243, now seen corresponding path program 2 times [2023-08-27 01:05:01,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:05:01,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727430068] [2023-08-27 01:05:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:05:01,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:05:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:05:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:02,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:05:02,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727430068] [2023-08-27 01:05:02,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727430068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:05:02,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470863940] [2023-08-27 01:05:02,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:05:02,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:05:02,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:05:02,201 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:05:02,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 01:05:02,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:05:02,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:05:02,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-27 01:05:02,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:05:02,361 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:05:02,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:02,392 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:02,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:02,431 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:02,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:02,462 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:02,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:02,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:02,499 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-08-27 01:05:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:02,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:05:02,546 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1286 (Array Int Int)) (v_ArrVal_1285 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1286) c_~A~0.base) c_~A~0.offset) 2147483650))) is different from false [2023-08-27 01:05:02,554 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1286 (Array Int Int)) (v_ArrVal_1285 (Array Int Int)) (v_ArrVal_1284 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1284) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1286) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-08-27 01:05:02,587 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:05:02,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-27 01:05:02,596 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:05:02,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4387 treesize of output 4323 [2023-08-27 01:05:02,608 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 125 [2023-08-27 01:05:02,613 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 125 treesize of output 123 [2023-08-27 01:05:02,617 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 254 treesize of output 238 [2023-08-27 01:05:02,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-08-27 01:05:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:02,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470863940] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:05:02,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:05:02,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 01:05:02,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332060483] [2023-08-27 01:05:02,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:05:02,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 01:05:02,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:05:02,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 01:05:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=295, Unknown=9, NotChecked=74, Total=462 [2023-08-27 01:05:02,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 352 [2023-08-27 01:05:02,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 707 flow. Second operand has 22 states, 22 states have (on average 125.95454545454545) internal successors, (2771), 22 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:02,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:05:02,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 352 [2023-08-27 01:05:02,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:05:04,675 INFO L124 PetriNetUnfolderBase]: 20570/26868 cut-off events. [2023-08-27 01:05:04,675 INFO L125 PetriNetUnfolderBase]: For 86062/86868 co-relation queries the response was YES. [2023-08-27 01:05:04,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103293 conditions, 26868 events. 20570/26868 cut-off events. For 86062/86868 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 129900 event pairs, 10981 based on Foata normal form. 1426/26807 useless extension candidates. Maximal degree in co-relation 103260. Up to 26734 conditions per place. [2023-08-27 01:05:05,025 INFO L140 encePairwiseOnDemand]: 348/352 looper letters, 77 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-08-27 01:05:05,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 89 transitions, 865 flow [2023-08-27 01:05:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 01:05:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 01:05:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 653 transitions. [2023-08-27 01:05:05,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3710227272727273 [2023-08-27 01:05:05,026 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 653 transitions. [2023-08-27 01:05:05,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 653 transitions. [2023-08-27 01:05:05,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:05:05,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 653 transitions. [2023-08-27 01:05:05,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:05,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:05,028 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:05,028 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 707 flow. Second operand 5 states and 653 transitions. [2023-08-27 01:05:05,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 89 transitions, 865 flow [2023-08-27 01:05:05,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 89 transitions, 838 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 01:05:05,177 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 684 flow [2023-08-27 01:05:05,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=684, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2023-08-27 01:05:05,178 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 45 predicate places. [2023-08-27 01:05:05,178 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 684 flow [2023-08-27 01:05:05,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 125.95454545454545) internal successors, (2771), 22 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:05,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:05:05,178 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:05:05,185 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 01:05:05,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 01:05:05,383 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:05:05,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:05:05,383 INFO L85 PathProgramCache]: Analyzing trace with hash 683520317, now seen corresponding path program 5 times [2023-08-27 01:05:05,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:05:05,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269041959] [2023-08-27 01:05:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:05:05,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:05:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:05:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:05,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:05:05,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269041959] [2023-08-27 01:05:05,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269041959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:05:05,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784564049] [2023-08-27 01:05:05,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:05:05,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:05:05,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:05:05,560 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:05:05,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 01:05:05,691 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 01:05:05,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:05:05,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 01:05:05,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:05:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:05,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:05:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:05,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784564049] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:05:05,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:05:05,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-27 01:05:05,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306501799] [2023-08-27 01:05:05,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:05:05,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 01:05:05,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:05:05,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 01:05:05,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-08-27 01:05:05,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:05:05,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 684 flow. Second operand has 24 states, 24 states have (on average 135.33333333333334) internal successors, (3248), 24 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:05,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:05:05,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:05:05,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:05:09,065 INFO L124 PetriNetUnfolderBase]: 32127/41592 cut-off events. [2023-08-27 01:05:09,065 INFO L125 PetriNetUnfolderBase]: For 101532/101532 co-relation queries the response was YES. [2023-08-27 01:05:09,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156359 conditions, 41592 events. 32127/41592 cut-off events. For 101532/101532 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 199271 event pairs, 10609 based on Foata normal form. 876/40490 useless extension candidates. Maximal degree in co-relation 156328. Up to 14460 conditions per place. [2023-08-27 01:05:09,283 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 197 selfloop transitions, 41 changer transitions 0/238 dead transitions. [2023-08-27 01:05:09,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 238 transitions, 1871 flow [2023-08-27 01:05:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 01:05:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 01:05:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1612 transitions. [2023-08-27 01:05:09,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41632231404958675 [2023-08-27 01:05:09,285 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1612 transitions. [2023-08-27 01:05:09,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1612 transitions. [2023-08-27 01:05:09,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:05:09,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1612 transitions. [2023-08-27 01:05:09,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.54545454545453) internal successors, (1612), 11 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:09,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 352.0) internal successors, (4224), 12 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:09,289 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 352.0) internal successors, (4224), 12 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:09,289 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 684 flow. Second operand 11 states and 1612 transitions. [2023-08-27 01:05:09,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 238 transitions, 1871 flow [2023-08-27 01:05:10,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 238 transitions, 1863 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 01:05:10,433 INFO L231 Difference]: Finished difference. Result has 109 places, 104 transitions, 1033 flow [2023-08-27 01:05:10,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1033, PETRI_PLACES=109, PETRI_TRANSITIONS=104} [2023-08-27 01:05:10,433 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2023-08-27 01:05:10,433 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 104 transitions, 1033 flow [2023-08-27 01:05:10,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 135.33333333333334) internal successors, (3248), 24 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:10,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:05:10,434 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:05:10,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-27 01:05:10,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 01:05:10,638 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:05:10,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:05:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash -74045066, now seen corresponding path program 6 times [2023-08-27 01:05:10,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:05:10,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622862591] [2023-08-27 01:05:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:05:10,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:05:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:05:11,054 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:11,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:05:11,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622862591] [2023-08-27 01:05:11,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622862591] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:05:11,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723753259] [2023-08-27 01:05:11,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:05:11,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:05:11,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:05:11,055 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:05:11,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 01:05:11,232 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 01:05:11,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:05:11,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-27 01:05:11,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:05:11,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:05:11,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:11,375 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:11,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:11,407 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:11,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:11,434 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:11,447 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:05:11,470 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:05:11,495 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:05:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:11,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:05:15,810 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:05:15,811 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 32 treesize of output 33 [2023-08-27 01:05:15,816 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:05:15,816 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 157 treesize of output 151 [2023-08-27 01:05:15,819 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 138 treesize of output 122 [2023-08-27 01:05:15,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2023-08-27 01:05:15,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2023-08-27 01:05:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:15,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723753259] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:05:15,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:05:15,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-08-27 01:05:15,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25710938] [2023-08-27 01:05:15,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:05:15,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-27 01:05:15,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:05:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-27 01:05:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1122, Unknown=15, NotChecked=0, Total=1260 [2023-08-27 01:05:15,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:05:15,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 104 transitions, 1033 flow. Second operand has 36 states, 36 states have (on average 123.27777777777777) internal successors, (4438), 36 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:15,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:05:15,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:05:15,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:05:20,195 INFO L124 PetriNetUnfolderBase]: 32279/41779 cut-off events. [2023-08-27 01:05:20,195 INFO L125 PetriNetUnfolderBase]: For 162890/162890 co-relation queries the response was YES. [2023-08-27 01:05:20,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176395 conditions, 41779 events. 32279/41779 cut-off events. For 162890/162890 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 200557 event pairs, 18314 based on Foata normal form. 35/39829 useless extension candidates. Maximal degree in co-relation 176359. Up to 40432 conditions per place. [2023-08-27 01:05:20,489 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 166 selfloop transitions, 23 changer transitions 0/189 dead transitions. [2023-08-27 01:05:20,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 189 transitions, 1851 flow [2023-08-27 01:05:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 01:05:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 01:05:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1566 transitions. [2023-08-27 01:05:20,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37073863636363635 [2023-08-27 01:05:20,594 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1566 transitions. [2023-08-27 01:05:20,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1566 transitions. [2023-08-27 01:05:20,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:05:20,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1566 transitions. [2023-08-27 01:05:20,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 130.5) internal successors, (1566), 12 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:20,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:20,598 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:20,598 INFO L175 Difference]: Start difference. First operand has 109 places, 104 transitions, 1033 flow. Second operand 12 states and 1566 transitions. [2023-08-27 01:05:20,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 189 transitions, 1851 flow [2023-08-27 01:05:22,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 189 transitions, 1828 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-27 01:05:22,902 INFO L231 Difference]: Finished difference. Result has 119 places, 111 transitions, 1170 flow [2023-08-27 01:05:22,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1170, PETRI_PLACES=119, PETRI_TRANSITIONS=111} [2023-08-27 01:05:22,906 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 67 predicate places. [2023-08-27 01:05:22,906 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 111 transitions, 1170 flow [2023-08-27 01:05:22,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 123.27777777777777) internal successors, (4438), 36 states have internal predecessors, (4438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:22,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:05:22,908 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:05:22,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 01:05:23,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 01:05:23,113 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:05:23,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:05:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2003231911, now seen corresponding path program 3 times [2023-08-27 01:05:23,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:05:23,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481016181] [2023-08-27 01:05:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:05:23,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:05:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:05:23,619 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:23,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:05:23,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481016181] [2023-08-27 01:05:23,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481016181] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:05:23,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959159653] [2023-08-27 01:05:23,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:05:23,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:05:23,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:05:23,629 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:05:23,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 01:05:23,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 01:05:23,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:05:23,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-27 01:05:23,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:05:24,057 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:05:24,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:24,111 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:24,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:24,156 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:24,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:24,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:24,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:24,225 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:24,237 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:05:24,265 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:05:24,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:05:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:24,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:05:24,452 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1543 (Array Int Int)) (v_ArrVal_1542 (Array Int Int)) (v_ArrVal_1541 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1541) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1542) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1543) c_~A~0.base) (+ c_~A~0.offset 12))))) is different from false [2023-08-27 01:05:24,614 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:05:24,614 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 35 treesize of output 36 [2023-08-27 01:05:24,629 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:05:24,630 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 19587 treesize of output 19203 [2023-08-27 01:05:24,651 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 143 treesize of output 135 [2023-08-27 01:05:24,658 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 135 treesize of output 131 [2023-08-27 01:05:24,664 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 278 treesize of output 246 [2023-08-27 01:05:24,673 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 130 treesize of output 114 [2023-08-27 01:05:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:24,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959159653] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:05:24,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:05:24,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-27 01:05:24,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107447586] [2023-08-27 01:05:24,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:05:24,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-27 01:05:24,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:05:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-27 01:05:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1254, Unknown=12, NotChecked=72, Total=1482 [2023-08-27 01:05:24,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:05:24,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 111 transitions, 1170 flow. Second operand has 39 states, 39 states have (on average 120.28205128205128) internal successors, (4691), 39 states have internal predecessors, (4691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:24,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:05:24,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:05:24,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:05:29,774 INFO L124 PetriNetUnfolderBase]: 33962/43865 cut-off events. [2023-08-27 01:05:29,774 INFO L125 PetriNetUnfolderBase]: For 193443/193443 co-relation queries the response was YES. [2023-08-27 01:05:29,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187556 conditions, 43865 events. 33962/43865 cut-off events. For 193443/193443 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 210237 event pairs, 14993 based on Foata normal form. 403/42197 useless extension candidates. Maximal degree in co-relation 187516. Up to 27130 conditions per place. [2023-08-27 01:05:30,030 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 205 selfloop transitions, 27 changer transitions 0/232 dead transitions. [2023-08-27 01:05:30,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 232 transitions, 2095 flow [2023-08-27 01:05:30,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 01:05:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 01:05:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1568 transitions. [2023-08-27 01:05:30,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2023-08-27 01:05:30,032 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1568 transitions. [2023-08-27 01:05:30,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1568 transitions. [2023-08-27 01:05:30,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:05:30,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1568 transitions. [2023-08-27 01:05:30,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 130.66666666666666) internal successors, (1568), 12 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:30,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:30,036 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:30,036 INFO L175 Difference]: Start difference. First operand has 119 places, 111 transitions, 1170 flow. Second operand 12 states and 1568 transitions. [2023-08-27 01:05:30,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 232 transitions, 2095 flow [2023-08-27 01:05:32,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 232 transitions, 2041 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-08-27 01:05:32,504 INFO L231 Difference]: Finished difference. Result has 126 places, 113 transitions, 1215 flow [2023-08-27 01:05:32,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1215, PETRI_PLACES=126, PETRI_TRANSITIONS=113} [2023-08-27 01:05:32,506 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 74 predicate places. [2023-08-27 01:05:32,506 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 113 transitions, 1215 flow [2023-08-27 01:05:32,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 120.28205128205128) internal successors, (4691), 39 states have internal predecessors, (4691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:32,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:05:32,507 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:05:32,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 01:05:32,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 01:05:32,711 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:05:32,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:05:32,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1999573874, now seen corresponding path program 7 times [2023-08-27 01:05:32,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:05:32,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114544736] [2023-08-27 01:05:32,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:05:32,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:05:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:05:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:32,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:05:32,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114544736] [2023-08-27 01:05:32,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114544736] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:05:32,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308560768] [2023-08-27 01:05:32,921 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:05:32,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:05:32,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:05:32,941 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:05:32,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 01:05:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:05:33,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 01:05:33,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:05:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:33,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:05:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:33,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308560768] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:05:33,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:05:33,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-08-27 01:05:33,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702567528] [2023-08-27 01:05:33,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:05:33,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 01:05:33,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:05:33,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 01:05:33,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2023-08-27 01:05:33,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:05:33,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 113 transitions, 1215 flow. Second operand has 29 states, 29 states have (on average 135.27586206896552) internal successors, (3923), 29 states have internal predecessors, (3923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:33,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:05:33,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:05:33,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:05:38,623 INFO L124 PetriNetUnfolderBase]: 45244/58323 cut-off events. [2023-08-27 01:05:38,623 INFO L125 PetriNetUnfolderBase]: For 241978/241978 co-relation queries the response was YES. [2023-08-27 01:05:38,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260342 conditions, 58323 events. 45244/58323 cut-off events. For 241978/241978 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 287331 event pairs, 13309 based on Foata normal form. 876/56463 useless extension candidates. Maximal degree in co-relation 260300. Up to 17148 conditions per place. [2023-08-27 01:05:39,048 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 230 selfloop transitions, 62 changer transitions 0/292 dead transitions. [2023-08-27 01:05:39,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 292 transitions, 2776 flow [2023-08-27 01:05:39,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 01:05:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 01:05:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1900 transitions. [2023-08-27 01:05:39,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152097902097902 [2023-08-27 01:05:39,050 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1900 transitions. [2023-08-27 01:05:39,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1900 transitions. [2023-08-27 01:05:39,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:05:39,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1900 transitions. [2023-08-27 01:05:39,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 146.15384615384616) internal successors, (1900), 13 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:39,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:39,054 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:39,054 INFO L175 Difference]: Start difference. First operand has 126 places, 113 transitions, 1215 flow. Second operand 13 states and 1900 transitions. [2023-08-27 01:05:39,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 292 transitions, 2776 flow [2023-08-27 01:05:48,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 292 transitions, 2604 flow, removed 44 selfloop flow, removed 10 redundant places. [2023-08-27 01:05:48,183 INFO L231 Difference]: Finished difference. Result has 135 places, 134 transitions, 1643 flow [2023-08-27 01:05:48,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1643, PETRI_PLACES=135, PETRI_TRANSITIONS=134} [2023-08-27 01:05:48,184 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 83 predicate places. [2023-08-27 01:05:48,184 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 134 transitions, 1643 flow [2023-08-27 01:05:48,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 135.27586206896552) internal successors, (3923), 29 states have internal predecessors, (3923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:48,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:05:48,185 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:05:48,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-27 01:05:48,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:05:48,389 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:05:48,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:05:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash -171286165, now seen corresponding path program 8 times [2023-08-27 01:05:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:05:48,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120173531] [2023-08-27 01:05:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:05:48,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:05:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:05:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:48,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:05:48,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120173531] [2023-08-27 01:05:48,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120173531] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:05:48,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372804212] [2023-08-27 01:05:48,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:05:48,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:05:48,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:05:48,915 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:05:48,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 01:05:49,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:05:49,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:05:49,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-27 01:05:49,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:05:49,237 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:05:49,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:49,271 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:49,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:49,309 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:49,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:05:49,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:05:49,355 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:05:49,399 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:05:49,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:05:49,452 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:05:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:49,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:05:49,601 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1726 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1726) c_~A~0.base) (+ c_~A~0.offset 16)) 2147483650))) is different from false [2023-08-27 01:05:53,706 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:05:53,706 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 32 treesize of output 33 [2023-08-27 01:05:53,712 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:05:53,712 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 157 treesize of output 151 [2023-08-27 01:05:53,723 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 138 treesize of output 130 [2023-08-27 01:05:53,726 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 130 treesize of output 114 [2023-08-27 01:05:53,730 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2023-08-27 01:05:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:05:53,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372804212] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:05:53,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:05:53,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2023-08-27 01:05:53,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919123526] [2023-08-27 01:05:53,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:05:53,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-27 01:05:53,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:05:53,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-27 01:05:53,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1491, Unknown=15, NotChecked=78, Total=1722 [2023-08-27 01:05:53,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:05:53,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 134 transitions, 1643 flow. Second operand has 42 states, 42 states have (on average 123.23809523809524) internal successors, (5176), 42 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:05:53,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:05:53,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:05:53,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:00,272 INFO L124 PetriNetUnfolderBase]: 45396/58510 cut-off events. [2023-08-27 01:06:00,272 INFO L125 PetriNetUnfolderBase]: For 281762/281762 co-relation queries the response was YES. [2023-08-27 01:06:00,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265445 conditions, 58510 events. 45396/58510 cut-off events. For 281762/281762 co-relation queries the response was YES. Maximal size of possible extension queue 1319. Compared 287562 event pairs, 25862 based on Foata normal form. 35/55802 useless extension candidates. Maximal degree in co-relation 265400. Up to 57010 conditions per place. [2023-08-27 01:06:00,731 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 206 selfloop transitions, 28 changer transitions 0/234 dead transitions. [2023-08-27 01:06:00,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 234 transitions, 2657 flow [2023-08-27 01:06:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 01:06:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 01:06:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1823 transitions. [2023-08-27 01:06:00,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36992694805194803 [2023-08-27 01:06:00,733 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1823 transitions. [2023-08-27 01:06:00,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1823 transitions. [2023-08-27 01:06:00,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:00,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1823 transitions. [2023-08-27 01:06:00,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 130.21428571428572) internal successors, (1823), 14 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:00,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:00,738 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:00,738 INFO L175 Difference]: Start difference. First operand has 135 places, 134 transitions, 1643 flow. Second operand 14 states and 1823 transitions. [2023-08-27 01:06:00,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 234 transitions, 2657 flow [2023-08-27 01:06:08,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 234 transitions, 2624 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-27 01:06:08,402 INFO L231 Difference]: Finished difference. Result has 148 places, 142 transitions, 1820 flow [2023-08-27 01:06:08,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1820, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2023-08-27 01:06:08,402 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 96 predicate places. [2023-08-27 01:06:08,403 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 1820 flow [2023-08-27 01:06:08,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 123.23809523809524) internal successors, (5176), 42 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:08,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:08,404 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:06:08,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-27 01:06:08,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:08,608 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:06:08,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash -547827946, now seen corresponding path program 4 times [2023-08-27 01:06:08,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:08,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692451350] [2023-08-27 01:06:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:08,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:06:09,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:09,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692451350] [2023-08-27 01:06:09,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692451350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:06:09,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842615481] [2023-08-27 01:06:09,234 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:06:09,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:09,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:06:09,245 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:06:09,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 01:06:09,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:06:09,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:06:09,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-27 01:06:09,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:06:09,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:06:09,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:09,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:06:09,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:09,669 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:06:09,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:09,706 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:06:09,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:06:09,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:06:09,750 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:06:09,778 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:06:09,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:06:09,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:06:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:06:09,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:06:22,301 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:22,301 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 35 treesize of output 36 [2023-08-27 01:06:22,309 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:06:22,309 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 1227 treesize of output 1203 [2023-08-27 01:06:22,318 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 143 treesize of output 135 [2023-08-27 01:06:22,322 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 135 treesize of output 119 [2023-08-27 01:06:22,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 115 [2023-08-27 01:06:22,388 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 142 treesize of output 110 [2023-08-27 01:06:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:06:22,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842615481] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:06:22,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:06:22,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 43 [2023-08-27 01:06:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928214461] [2023-08-27 01:06:22,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:06:22,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-08-27 01:06:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-08-27 01:06:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1786, Unknown=29, NotChecked=0, Total=1980 [2023-08-27 01:06:22,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:06:22,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 142 transitions, 1820 flow. Second operand has 45 states, 45 states have (on average 120.24444444444444) internal successors, (5411), 45 states have internal predecessors, (5411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:22,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:22,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:06:22,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:29,713 INFO L124 PetriNetUnfolderBase]: 47079/60596 cut-off events. [2023-08-27 01:06:29,713 INFO L125 PetriNetUnfolderBase]: For 337423/337423 co-relation queries the response was YES. [2023-08-27 01:06:30,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277587 conditions, 60596 events. 47079/60596 cut-off events. For 337423/337423 co-relation queries the response was YES. Maximal size of possible extension queue 1353. Compared 298914 event pairs, 21155 based on Foata normal form. 403/58170 useless extension candidates. Maximal degree in co-relation 277537. Up to 41587 conditions per place. [2023-08-27 01:06:30,381 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 252 selfloop transitions, 33 changer transitions 0/285 dead transitions. [2023-08-27 01:06:30,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 285 transitions, 2940 flow [2023-08-27 01:06:30,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 01:06:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 01:06:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1826 transitions. [2023-08-27 01:06:30,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2023-08-27 01:06:30,384 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1826 transitions. [2023-08-27 01:06:30,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1826 transitions. [2023-08-27 01:06:30,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:30,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1826 transitions. [2023-08-27 01:06:30,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 130.42857142857142) internal successors, (1826), 14 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:30,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:30,389 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:30,389 INFO L175 Difference]: Start difference. First operand has 148 places, 142 transitions, 1820 flow. Second operand 14 states and 1826 transitions. [2023-08-27 01:06:30,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 285 transitions, 2940 flow [2023-08-27 01:06:37,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 285 transitions, 2871 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-08-27 01:06:37,718 INFO L231 Difference]: Finished difference. Result has 156 places, 144 transitions, 1870 flow [2023-08-27 01:06:37,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1870, PETRI_PLACES=156, PETRI_TRANSITIONS=144} [2023-08-27 01:06:37,719 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 104 predicate places. [2023-08-27 01:06:37,719 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 144 transitions, 1870 flow [2023-08-27 01:06:37,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 120.24444444444444) internal successors, (5411), 45 states have internal predecessors, (5411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:37,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:06:37,720 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:06:37,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-27 01:06:37,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:37,924 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:06:37,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:06:37,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1014900195, now seen corresponding path program 9 times [2023-08-27 01:06:37,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:06:37,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939269835] [2023-08-27 01:06:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:06:37,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:06:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:06:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:06:38,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:06:38,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939269835] [2023-08-27 01:06:38,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939269835] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:06:38,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059722950] [2023-08-27 01:06:38,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 01:06:38,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:06:38,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:06:38,117 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:06:38,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 01:06:38,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 01:06:38,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:06:38,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 01:06:38,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:06:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:06:38,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:06:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:06:38,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059722950] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:06:38,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:06:38,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2023-08-27 01:06:38,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529146873] [2023-08-27 01:06:38,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:06:38,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 01:06:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:06:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 01:06:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2023-08-27 01:06:38,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:06:38,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 144 transitions, 1870 flow. Second operand has 34 states, 34 states have (on average 135.23529411764707) internal successors, (4598), 34 states have internal predecessors, (4598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:38,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:06:38,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:06:38,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:06:46,307 INFO L124 PetriNetUnfolderBase]: 60196/77327 cut-off events. [2023-08-27 01:06:46,307 INFO L125 PetriNetUnfolderBase]: For 391824/391824 co-relation queries the response was YES. [2023-08-27 01:06:46,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367396 conditions, 77327 events. 60196/77327 cut-off events. For 391824/391824 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 387211 event pairs, 15535 based on Foata normal form. 876/74616 useless extension candidates. Maximal degree in co-relation 367344. Up to 22868 conditions per place. [2023-08-27 01:06:46,987 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 264 selfloop transitions, 87 changer transitions 0/351 dead transitions. [2023-08-27 01:06:46,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 351 transitions, 3794 flow [2023-08-27 01:06:46,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 01:06:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 01:06:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2188 transitions. [2023-08-27 01:06:46,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41439393939393937 [2023-08-27 01:06:46,990 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2188 transitions. [2023-08-27 01:06:46,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2188 transitions. [2023-08-27 01:06:46,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:06:46,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2188 transitions. [2023-08-27 01:06:46,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.86666666666667) internal successors, (2188), 15 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:46,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:46,995 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:06:46,995 INFO L175 Difference]: Start difference. First operand has 156 places, 144 transitions, 1870 flow. Second operand 15 states and 2188 transitions. [2023-08-27 01:06:46,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 351 transitions, 3794 flow [2023-08-27 01:07:07,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 351 transitions, 3555 flow, removed 56 selfloop flow, removed 12 redundant places. [2023-08-27 01:07:07,326 INFO L231 Difference]: Finished difference. Result has 166 places, 169 transitions, 2455 flow [2023-08-27 01:07:07,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2455, PETRI_PLACES=166, PETRI_TRANSITIONS=169} [2023-08-27 01:07:07,326 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 114 predicate places. [2023-08-27 01:07:07,326 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 169 transitions, 2455 flow [2023-08-27 01:07:07,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 135.23529411764707) internal successors, (4598), 34 states have internal predecessors, (4598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:07,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:07,327 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:07:07,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-08-27 01:07:07,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:07,533 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:07:07,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash 142708182, now seen corresponding path program 10 times [2023-08-27 01:07:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:07,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969317927] [2023-08-27 01:07:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:08,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:08,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969317927] [2023-08-27 01:07:08,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969317927] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:07:08,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109847080] [2023-08-27 01:07:08,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 01:07:08,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:08,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:08,119 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:07:08,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 01:07:08,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 01:07:08,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:07:08,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-27 01:07:08,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:07:08,485 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 01:07:08,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:08,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:07:08,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:08,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:07:08,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:08,591 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 01:07:08,647 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-27 01:07:08,678 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-27 01:07:08,709 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-27 01:07:08,742 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-27 01:07:08,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-08-27 01:07:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:08,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:07:09,010 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2033 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2033) c_~A~0.base) (+ c_~A~0.offset 20))))) is different from false [2023-08-27 01:07:11,152 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:11,153 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 32 treesize of output 33 [2023-08-27 01:07:11,159 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:11,159 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 311 treesize of output 299 [2023-08-27 01:07:11,163 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 138 treesize of output 122 [2023-08-27 01:07:11,170 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-27 01:07:11,174 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 62 treesize of output 54 [2023-08-27 01:07:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:11,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109847080] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:07:11,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:07:11,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2023-08-27 01:07:11,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816989617] [2023-08-27 01:07:11,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:07:11,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-27 01:07:11,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:07:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-27 01:07:11,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2184, Unknown=16, NotChecked=94, Total=2450 [2023-08-27 01:07:11,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 352 [2023-08-27 01:07:11,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 169 transitions, 2455 flow. Second operand has 50 states, 50 states have (on average 123.2) internal successors, (6160), 50 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:11,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:07:11,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 352 [2023-08-27 01:07:11,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:07:21,845 INFO L124 PetriNetUnfolderBase]: 60348/77514 cut-off events. [2023-08-27 01:07:21,846 INFO L125 PetriNetUnfolderBase]: For 470612/470612 co-relation queries the response was YES. [2023-08-27 01:07:22,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374846 conditions, 77514 events. 60348/77514 cut-off events. For 470612/470612 co-relation queries the response was YES. Maximal size of possible extension queue 1577. Compared 391056 event pairs, 33349 based on Foata normal form. 35/73955 useless extension candidates. Maximal degree in co-relation 374791. Up to 75861 conditions per place. [2023-08-27 01:07:22,719 INFO L140 encePairwiseOnDemand]: 344/352 looper letters, 251 selfloop transitions, 33 changer transitions 0/284 dead transitions. [2023-08-27 01:07:22,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 284 transitions, 3680 flow [2023-08-27 01:07:22,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 01:07:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 01:07:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2080 transitions. [2023-08-27 01:07:22,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2023-08-27 01:07:22,722 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2080 transitions. [2023-08-27 01:07:22,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2080 transitions. [2023-08-27 01:07:22,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:07:22,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2080 transitions. [2023-08-27 01:07:22,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 130.0) internal successors, (2080), 16 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:22,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 352.0) internal successors, (5984), 17 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:22,727 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 352.0) internal successors, (5984), 17 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:22,727 INFO L175 Difference]: Start difference. First operand has 166 places, 169 transitions, 2455 flow. Second operand 16 states and 2080 transitions. [2023-08-27 01:07:22,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 284 transitions, 3680 flow [2023-08-27 01:07:35,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 284 transitions, 3636 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-08-27 01:07:35,926 INFO L231 Difference]: Finished difference. Result has 181 places, 178 transitions, 2676 flow [2023-08-27 01:07:35,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2676, PETRI_PLACES=181, PETRI_TRANSITIONS=178} [2023-08-27 01:07:35,927 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 129 predicate places. [2023-08-27 01:07:35,927 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 178 transitions, 2676 flow [2023-08-27 01:07:35,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 123.2) internal successors, (6160), 50 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:35,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:35,928 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:07:35,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-08-27 01:07:36,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:36,134 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:07:36,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1476344005, now seen corresponding path program 5 times [2023-08-27 01:07:36,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:36,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401064762] [2023-08-27 01:07:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:36,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:36,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:36,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401064762] [2023-08-27 01:07:36,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401064762] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:07:36,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953987499] [2023-08-27 01:07:36,834 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:07:36,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:36,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:36,835 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:07:36,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 01:07:37,029 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 01:07:37,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:07:37,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-27 01:07:37,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:07:37,219 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:07:37,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:37,263 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:07:37,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:37,312 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:07:37,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:37,348 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:07:37,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:07:37,408 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:07:37,414 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:07:37,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:07:37,474 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:07:37,507 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:07:37,538 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:07:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:37,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:07:37,986 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:37,986 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 35 treesize of output 36 [2023-08-27 01:07:37,995 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:07:37,996 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 4899 treesize of output 4803 [2023-08-27 01:07:38,005 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 143 treesize of output 139 [2023-08-27 01:07:38,008 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 139 treesize of output 123 [2023-08-27 01:07:38,011 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 115 [2023-08-27 01:07:38,076 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 142 treesize of output 110 [2023-08-27 01:07:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:38,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953987499] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:07:38,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:07:38,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 50 [2023-08-27 01:07:38,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796029161] [2023-08-27 01:07:38,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:07:38,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-08-27 01:07:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:07:38,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-08-27 01:07:38,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2443, Unknown=34, NotChecked=0, Total=2652 [2023-08-27 01:07:38,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 352 [2023-08-27 01:07:38,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 178 transitions, 2676 flow. Second operand has 52 states, 52 states have (on average 120.21153846153847) internal successors, (6251), 52 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:38,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:07:38,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 352 [2023-08-27 01:07:38,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:07:48,555 INFO L124 PetriNetUnfolderBase]: 62031/79600 cut-off events. [2023-08-27 01:07:48,555 INFO L125 PetriNetUnfolderBase]: For 597681/597681 co-relation queries the response was YES. [2023-08-27 01:07:49,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387969 conditions, 79600 events. 62031/79600 cut-off events. For 597681/597681 co-relation queries the response was YES. Maximal size of possible extension queue 1588. Compared 400823 event pairs, 28293 based on Foata normal form. 403/76323 useless extension candidates. Maximal degree in co-relation 387908. Up to 58317 conditions per place. [2023-08-27 01:07:49,588 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 304 selfloop transitions, 39 changer transitions 0/343 dead transitions. [2023-08-27 01:07:49,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 343 transitions, 4001 flow [2023-08-27 01:07:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 01:07:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 01:07:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2084 transitions. [2023-08-27 01:07:49,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3700284090909091 [2023-08-27 01:07:49,625 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2084 transitions. [2023-08-27 01:07:49,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2084 transitions. [2023-08-27 01:07:49,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:07:49,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2084 transitions. [2023-08-27 01:07:49,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 130.25) internal successors, (2084), 16 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:49,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 352.0) internal successors, (5984), 17 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:49,635 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 352.0) internal successors, (5984), 17 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:49,635 INFO L175 Difference]: Start difference. First operand has 181 places, 178 transitions, 2676 flow. Second operand 16 states and 2084 transitions. [2023-08-27 01:07:49,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 343 transitions, 4001 flow [2023-08-27 01:07:59,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 343 transitions, 3917 flow, removed 32 selfloop flow, removed 7 redundant places. [2023-08-27 01:07:59,230 INFO L231 Difference]: Finished difference. Result has 190 places, 180 transitions, 2731 flow [2023-08-27 01:07:59,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2731, PETRI_PLACES=190, PETRI_TRANSITIONS=180} [2023-08-27 01:07:59,231 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 138 predicate places. [2023-08-27 01:07:59,231 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 180 transitions, 2731 flow [2023-08-27 01:07:59,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 120.21153846153847) internal successors, (6251), 52 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:07:59,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:07:59,231 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:07:59,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-27 01:07:59,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-27 01:07:59,436 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:07:59,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:07:59,437 INFO L85 PathProgramCache]: Analyzing trace with hash 128989970, now seen corresponding path program 11 times [2023-08-27 01:07:59,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:07:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952527228] [2023-08-27 01:07:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:07:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:07:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:07:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:07:59,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:07:59,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952527228] [2023-08-27 01:07:59,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952527228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:07:59,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873607817] [2023-08-27 01:07:59,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 01:07:59,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:07:59,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:07:59,653 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:07:59,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 01:07:59,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 01:07:59,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:07:59,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 01:07:59,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:00,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:00,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873607817] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:00,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:00,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2023-08-27 01:08:00,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014430408] [2023-08-27 01:08:00,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:00,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-27 01:08:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-27 01:08:00,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1111, Unknown=0, NotChecked=0, Total=1482 [2023-08-27 01:08:00,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:08:00,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 180 transitions, 2731 flow. Second operand has 39 states, 39 states have (on average 135.2051282051282) internal successors, (5273), 39 states have internal predecessors, (5273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:00,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:00,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:08:00,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:08:11,170 INFO L124 PetriNetUnfolderBase]: 76983/98604 cut-off events. [2023-08-27 01:08:11,170 INFO L125 PetriNetUnfolderBase]: For 550427/550427 co-relation queries the response was YES. [2023-08-27 01:08:11,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495922 conditions, 98604 events. 76983/98604 cut-off events. For 550427/550427 co-relation queries the response was YES. Maximal size of possible extension queue 1892. Compared 500879 event pairs, 18497 based on Foata normal form. 876/94949 useless extension candidates. Maximal degree in co-relation 495859. Up to 29026 conditions per place. [2023-08-27 01:08:12,331 INFO L140 encePairwiseOnDemand]: 345/352 looper letters, 299 selfloop transitions, 116 changer transitions 0/415 dead transitions. [2023-08-27 01:08:12,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 415 transitions, 5050 flow [2023-08-27 01:08:12,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 01:08:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 01:08:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2476 transitions. [2023-08-27 01:08:12,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137700534759358 [2023-08-27 01:08:12,333 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2476 transitions. [2023-08-27 01:08:12,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2476 transitions. [2023-08-27 01:08:12,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:08:12,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2476 transitions. [2023-08-27 01:08:12,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 145.64705882352942) internal successors, (2476), 17 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:12,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 352.0) internal successors, (6336), 18 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:12,339 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 352.0) internal successors, (6336), 18 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:12,339 INFO L175 Difference]: Start difference. First operand has 190 places, 180 transitions, 2731 flow. Second operand 17 states and 2476 transitions. [2023-08-27 01:08:12,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 415 transitions, 5050 flow [2023-08-27 01:08:47,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 415 transitions, 4736 flow, removed 68 selfloop flow, removed 14 redundant places. [2023-08-27 01:08:47,893 INFO L231 Difference]: Finished difference. Result has 201 places, 209 transitions, 3496 flow [2023-08-27 01:08:47,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3496, PETRI_PLACES=201, PETRI_TRANSITIONS=209} [2023-08-27 01:08:47,893 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 149 predicate places. [2023-08-27 01:08:47,893 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 209 transitions, 3496 flow [2023-08-27 01:08:47,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 135.2051282051282) internal successors, (5273), 39 states have internal predecessors, (5273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:47,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:08:47,894 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:08:47,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 01:08:48,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-27 01:08:48,099 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:08:48,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:08:48,099 INFO L85 PathProgramCache]: Analyzing trace with hash 194110603, now seen corresponding path program 12 times [2023-08-27 01:08:48,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:08:48,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371723360] [2023-08-27 01:08:48,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:08:48,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:08:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:08:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:48,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:08:48,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371723360] [2023-08-27 01:08:48,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371723360] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:08:48,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725526419] [2023-08-27 01:08:48,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:08:48,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:08:48,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:08:48,868 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:08:48,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 01:08:49,341 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-27 01:08:49,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:08:49,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-27 01:08:49,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:08:49,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:08:49,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:49,647 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:08:49,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:49,703 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:08:49,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:08:49,754 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:08:49,814 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:08:49,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:08:49,874 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:08:49,906 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:08:49,935 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:08:49,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:08:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:50,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:08:52,561 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:52,561 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 32 treesize of output 33 [2023-08-27 01:08:52,567 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:08:52,567 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 311 treesize of output 299 [2023-08-27 01:08:52,572 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 138 treesize of output 130 [2023-08-27 01:08:52,577 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 130 treesize of output 114 [2023-08-27 01:08:52,581 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2023-08-27 01:08:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:08:52,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725526419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:08:52,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:08:52,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 54 [2023-08-27 01:08:52,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310184088] [2023-08-27 01:08:52,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:08:52,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-08-27 01:08:52,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:08:52,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-08-27 01:08:52,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2853, Unknown=18, NotChecked=0, Total=3080 [2023-08-27 01:08:52,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 352 [2023-08-27 01:08:52,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 209 transitions, 3496 flow. Second operand has 56 states, 56 states have (on average 111.17857142857143) internal successors, (6226), 56 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:08:52,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:08:52,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 352 [2023-08-27 01:08:52,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:09:19,164 INFO L124 PetriNetUnfolderBase]: 126966/162030 cut-off events. [2023-08-27 01:09:19,164 INFO L125 PetriNetUnfolderBase]: For 1085255/1085255 co-relation queries the response was YES. [2023-08-27 01:09:20,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899711 conditions, 162030 events. 126966/162030 cut-off events. For 1085255/1085255 co-relation queries the response was YES. Maximal size of possible extension queue 2071. Compared 837226 event pairs, 39390 based on Foata normal form. 1419/156070 useless extension candidates. Maximal degree in co-relation 899645. Up to 78143 conditions per place. [2023-08-27 01:09:21,084 INFO L140 encePairwiseOnDemand]: 342/352 looper letters, 1056 selfloop transitions, 154 changer transitions 0/1210 dead transitions. [2023-08-27 01:09:21,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 1210 transitions, 12168 flow [2023-08-27 01:09:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-08-27 01:09:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-08-27 01:09:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7574 transitions. [2023-08-27 01:09:21,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3470491202346041 [2023-08-27 01:09:21,091 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7574 transitions. [2023-08-27 01:09:21,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7574 transitions. [2023-08-27 01:09:21,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:09:21,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7574 transitions. [2023-08-27 01:09:21,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 122.16129032258064) internal successors, (7574), 62 states have internal predecessors, (7574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:21,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 352.0) internal successors, (22176), 63 states have internal predecessors, (22176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:21,112 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 352.0) internal successors, (22176), 63 states have internal predecessors, (22176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:21,112 INFO L175 Difference]: Start difference. First operand has 201 places, 209 transitions, 3496 flow. Second operand 62 states and 7574 transitions. [2023-08-27 01:09:21,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 1210 transitions, 12168 flow [2023-08-27 01:09:51,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1210 transitions, 12113 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-08-27 01:09:51,702 INFO L231 Difference]: Finished difference. Result has 271 places, 315 transitions, 6190 flow [2023-08-27 01:09:51,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=3441, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=6190, PETRI_PLACES=271, PETRI_TRANSITIONS=315} [2023-08-27 01:09:51,702 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 219 predicate places. [2023-08-27 01:09:51,702 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 315 transitions, 6190 flow [2023-08-27 01:09:51,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 111.17857142857143) internal successors, (6226), 56 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:51,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:09:51,703 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:09:51,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-27 01:09:51,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 01:09:51,908 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:09:51,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:09:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash 540767146, now seen corresponding path program 6 times [2023-08-27 01:09:51,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:09:51,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310009290] [2023-08-27 01:09:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:09:51,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:09:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:09:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:52,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:09:52,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310009290] [2023-08-27 01:09:52,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310009290] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:09:52,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126635943] [2023-08-27 01:09:52,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 01:09:52,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:09:52,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:09:52,653 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:09:52,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 01:09:53,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-27 01:09:53,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:09:53,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 71 conjunts are in the unsatisfiable core [2023-08-27 01:09:53,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:09:53,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 01:09:53,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:53,813 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:09:53,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:53,864 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:09:53,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:53,904 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:09:53,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 01:09:53,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 01:09:54,008 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:09:54,038 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:09:54,071 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:09:54,104 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:09:54,133 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:09:54,164 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-27 01:09:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:54,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:09:54,675 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:54,675 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 35 treesize of output 36 [2023-08-27 01:09:54,681 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 01:09:54,682 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 615 treesize of output 603 [2023-08-27 01:09:54,696 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 290 treesize of output 274 [2023-08-27 01:09:54,709 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 274 treesize of output 266 [2023-08-27 01:09:54,717 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 134 treesize of output 130 [2023-08-27 01:09:54,722 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 262 treesize of output 230 [2023-08-27 01:09:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:09:55,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126635943] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:09:55,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:09:55,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2023-08-27 01:09:55,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555346959] [2023-08-27 01:09:55,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:09:55,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-08-27 01:09:55,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:09:55,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-08-27 01:09:55,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=3186, Unknown=28, NotChecked=0, Total=3422 [2023-08-27 01:09:55,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 352 [2023-08-27 01:09:55,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 315 transitions, 6190 flow. Second operand has 59 states, 59 states have (on average 108.16949152542372) internal successors, (6382), 59 states have internal predecessors, (6382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:09:55,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:09:55,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 352 [2023-08-27 01:09:55,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:09:57,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 01:10:39,774 INFO L124 PetriNetUnfolderBase]: 180516/230340 cut-off events. [2023-08-27 01:10:39,775 INFO L125 PetriNetUnfolderBase]: For 2278468/2278468 co-relation queries the response was YES. [2023-08-27 01:10:42,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374097 conditions, 230340 events. 180516/230340 cut-off events. For 2278468/2278468 co-relation queries the response was YES. Maximal size of possible extension queue 2681. Compared 1234486 event pairs, 36633 based on Foata normal form. 3627/223471 useless extension candidates. Maximal degree in co-relation 1374015. Up to 50191 conditions per place. [2023-08-27 01:10:43,082 INFO L140 encePairwiseOnDemand]: 342/352 looper letters, 977 selfloop transitions, 194 changer transitions 0/1171 dead transitions. [2023-08-27 01:10:43,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1171 transitions, 12924 flow [2023-08-27 01:10:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-27 01:10:43,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-27 01:10:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 5605 transitions. [2023-08-27 01:10:43,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34615859683794464 [2023-08-27 01:10:43,087 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 5605 transitions. [2023-08-27 01:10:43,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 5605 transitions. [2023-08-27 01:10:43,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:10:43,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 5605 transitions. [2023-08-27 01:10:43,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 121.84782608695652) internal successors, (5605), 46 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:43,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 352.0) internal successors, (16544), 47 states have internal predecessors, (16544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:43,100 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 352.0) internal successors, (16544), 47 states have internal predecessors, (16544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:10:43,100 INFO L175 Difference]: Start difference. First operand has 271 places, 315 transitions, 6190 flow. Second operand 46 states and 5605 transitions. [2023-08-27 01:10:43,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1171 transitions, 12924 flow [2023-08-27 01:12:20,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 1171 transitions, 11767 flow, removed 456 selfloop flow, removed 14 redundant places. [2023-08-27 01:12:20,709 INFO L231 Difference]: Finished difference. Result has 313 places, 372 transitions, 6851 flow [2023-08-27 01:12:20,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=5188, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6851, PETRI_PLACES=313, PETRI_TRANSITIONS=372} [2023-08-27 01:12:20,710 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 261 predicate places. [2023-08-27 01:12:20,710 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 372 transitions, 6851 flow [2023-08-27 01:12:20,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 108.16949152542372) internal successors, (6382), 59 states have internal predecessors, (6382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:20,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:12:20,710 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:12:20,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-27 01:12:20,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:20,916 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 01:12:20,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:12:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1722465021, now seen corresponding path program 13 times [2023-08-27 01:12:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:12:20,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533784379] [2023-08-27 01:12:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:12:20,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:12:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 21 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:21,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:12:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533784379] [2023-08-27 01:12:21,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533784379] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:12:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763639411] [2023-08-27 01:12:21,126 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 01:12:21,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:12:21,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:12:21,127 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:12:21,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 01:12:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:12:21,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 01:12:21,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:12:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:21,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:12:21,714 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:12:21,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763639411] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:12:21,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:12:21,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 42 [2023-08-27 01:12:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444871618] [2023-08-27 01:12:21,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:12:21,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-27 01:12:21,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:12:21,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-27 01:12:21,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2023-08-27 01:12:21,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 352 [2023-08-27 01:12:21,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 372 transitions, 6851 flow. Second operand has 44 states, 44 states have (on average 135.1818181818182) internal successors, (5948), 44 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:12:21,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:12:21,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 352 [2023-08-27 01:12:21,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand