/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 --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -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-more-buffer-mult2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 14:20:22,976 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 14:20:23,058 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 14:20:23,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 14:20:23,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 14:20:23,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 14:20:23,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 14:20:23,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 14:20:23,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 14:20:23,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 14:20:23,097 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 14:20:23,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 14:20:23,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 14:20:23,099 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 14:20:23,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 14:20:23,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 14:20:23,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 14:20:23,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 14:20:23,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 14:20:23,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 14:20:23,100 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 14:20:23,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 14:20:23,101 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 14:20:23,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 14:20:23,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 14:20:23,102 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 14:20:23,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 14:20:23,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 14:20:23,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 14:20:23,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 14:20:23,104 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 14:20:23,104 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 14:20:23,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 14:20:23,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 14:20:23,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 14:20:23,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 14:20:23,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 14:20:23,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 14:20:23,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 14:20:23,416 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 14:20:23,416 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 14:20:23,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-08-27 14:20:24,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 14:20:24,862 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 14:20:24,863 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-08-27 14:20:24,870 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f004a472/5718252f00a04569a95fabcc7065c8cd/FLAG3d34b2a21 [2023-08-27 14:20:24,880 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f004a472/5718252f00a04569a95fabcc7065c8cd [2023-08-27 14:20:24,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 14:20:24,884 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 14:20:24,884 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 14:20:24,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 14:20:24,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 14:20:24,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:20:24" (1/1) ... [2023-08-27 14:20:24,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1778abe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:24, skipping insertion in model container [2023-08-27 14:20:24,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:20:24" (1/1) ... [2023-08-27 14:20:24,908 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 14:20:25,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 14:20:25,098 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 14:20:25,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 14:20:25,155 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 14:20:25,155 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 14:20:25,163 INFO L206 MainTranslator]: Completed translation [2023-08-27 14:20:25,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25 WrapperNode [2023-08-27 14:20:25,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 14:20:25,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 14:20:25,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 14:20:25,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 14:20:25,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (1/1) ... [2023-08-27 14:20:25,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (1/1) ... [2023-08-27 14:20:25,236 INFO L138 Inliner]: procedures = 27, calls = 77, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 361 [2023-08-27 14:20:25,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 14:20:25,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 14:20:25,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 14:20:25,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 14:20:25,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (1/1) ... [2023-08-27 14:20:25,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (1/1) ... [2023-08-27 14:20:25,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (1/1) ... [2023-08-27 14:20:25,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (1/1) ... [2023-08-27 14:20:25,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (1/1) ... [2023-08-27 14:20:25,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (1/1) ... [2023-08-27 14:20:25,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (1/1) ... [2023-08-27 14:20:25,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (1/1) ... [2023-08-27 14:20:25,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 14:20:25,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 14:20:25,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 14:20:25,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 14:20:25,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (1/1) ... [2023-08-27 14:20:25,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 14:20:25,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:20:25,310 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 14:20:25,331 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 14:20:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 14:20:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 14:20:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 14:20:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 14:20:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 14:20:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 14:20:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 14:20:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 14:20:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 14:20:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 14:20:25,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 14:20:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 14:20:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 14:20:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 14:20:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 14:20:25,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 14:20:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 14:20:25,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 14:20:25,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 14:20:25,354 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 14:20:25,483 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 14:20:25,490 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 14:20:25,996 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 14:20:26,409 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 14:20:26,409 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 14:20:26,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:20:26 BoogieIcfgContainer [2023-08-27 14:20:26,411 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 14:20:26,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 14:20:26,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 14:20:26,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 14:20:26,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:20:24" (1/3) ... [2023-08-27 14:20:26,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d8c225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:20:26, skipping insertion in model container [2023-08-27 14:20:26,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:20:25" (2/3) ... [2023-08-27 14:20:26,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d8c225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:20:26, skipping insertion in model container [2023-08-27 14:20:26,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:20:26" (3/3) ... [2023-08-27 14:20:26,418 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2023-08-27 14:20:26,434 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 14:20:26,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-08-27 14:20:26,434 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 14:20:26,594 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 14:20:26,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 257 transitions, 546 flow [2023-08-27 14:20:26,772 INFO L124 PetriNetUnfolderBase]: 18/253 cut-off events. [2023-08-27 14:20:26,772 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 14:20:26,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 253 events. 18/253 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 303 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2023-08-27 14:20:26,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 257 transitions, 546 flow [2023-08-27 14:20:26,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 240 transitions, 504 flow [2023-08-27 14:20:26,794 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 14:20:26,806 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 240 transitions, 504 flow [2023-08-27 14:20:26,810 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 240 transitions, 504 flow [2023-08-27 14:20:26,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 240 transitions, 504 flow [2023-08-27 14:20:26,884 INFO L124 PetriNetUnfolderBase]: 18/240 cut-off events. [2023-08-27 14:20:26,884 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 14:20:26,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 240 events. 18/240 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 300 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2023-08-27 14:20:26,891 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-08-27 14:20:42,048 INFO L134 LiptonReduction]: Checked pairs total: 7751 [2023-08-27 14:20:42,049 INFO L136 LiptonReduction]: Total number of compositions: 240 [2023-08-27 14:20:42,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 14:20:42,066 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;@14dbfa03, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 14:20:42,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-27 14:20:42,068 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 14:20:42,069 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 14:20:42,069 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 14:20:42,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:20:42,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 14:20:42,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:20:42,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:20:42,074 INFO L85 PathProgramCache]: Analyzing trace with hash 43775, now seen corresponding path program 1 times [2023-08-27 14:20:42,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:20:42,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922065788] [2023-08-27 14:20:42,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:20:42,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:20:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:20:42,372 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 14:20:42,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:20:42,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922065788] [2023-08-27 14:20:42,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922065788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:20:42,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:20:42,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:20:42,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174182597] [2023-08-27 14:20:42,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:20:42,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:20:42,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:20:42,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:20:42,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:20:42,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 497 [2023-08-27 14:20:42,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:42,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:20:42,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 497 [2023-08-27 14:20:42,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:20:47,447 INFO L124 PetriNetUnfolderBase]: 36524/45149 cut-off events. [2023-08-27 14:20:47,447 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2023-08-27 14:20:47,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90909 conditions, 45149 events. 36524/45149 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240304 event pairs, 23250 based on Foata normal form. 0/12191 useless extension candidates. Maximal degree in co-relation 80304. Up to 44289 conditions per place. [2023-08-27 14:20:47,783 INFO L140 encePairwiseOnDemand]: 480/497 looper letters, 50 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-08-27 14:20:47,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 256 flow [2023-08-27 14:20:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:20:47,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:20:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2023-08-27 14:20:47,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4272300469483568 [2023-08-27 14:20:47,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2023-08-27 14:20:47,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2023-08-27 14:20:47,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:20:47,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2023-08-27 14:20:47,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:47,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:47,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:47,825 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 3 states and 637 transitions. [2023-08-27 14:20:47,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 256 flow [2023-08-27 14:20:48,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 240 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 14:20:48,162 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 166 flow [2023-08-27 14:20:48,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-08-27 14:20:48,166 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2023-08-27 14:20:48,166 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 166 flow [2023-08-27 14:20:48,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:48,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:20:48,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 14:20:48,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 14:20:48,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:20:48,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:20:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1359105, now seen corresponding path program 1 times [2023-08-27 14:20:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:20:48,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506467789] [2023-08-27 14:20:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:20:48,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:20:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:20:48,261 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 14:20:48,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:20:48,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506467789] [2023-08-27 14:20:48,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506467789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:20:48,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616057779] [2023-08-27 14:20:48,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:20:48,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:20:48,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:20:48,265 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 14:20:48,301 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 14:20:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:20:48,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:20:48,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:20:48,452 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 14:20:48,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:20:48,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616057779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:20:48,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:20:48,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 14:20:48,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87365274] [2023-08-27 14:20:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:20:48,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:20:48,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:20:48,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:20:48,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 14:20:48,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 497 [2023-08-27 14:20:48,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:48,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:20:48,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 497 [2023-08-27 14:20:48,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:20:52,633 INFO L124 PetriNetUnfolderBase]: 36524/45147 cut-off events. [2023-08-27 14:20:52,633 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 14:20:52,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89895 conditions, 45147 events. 36524/45147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240260 event pairs, 23250 based on Foata normal form. 0/12193 useless extension candidates. Maximal degree in co-relation 89853. Up to 44281 conditions per place. [2023-08-27 14:20:52,880 INFO L140 encePairwiseOnDemand]: 490/497 looper letters, 47 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-08-27 14:20:52,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 264 flow [2023-08-27 14:20:52,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:20:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:20:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 815 transitions. [2023-08-27 14:20:52,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40995975855130784 [2023-08-27 14:20:52,884 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 815 transitions. [2023-08-27 14:20:52,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 815 transitions. [2023-08-27 14:20:52,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:20:52,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 815 transitions. [2023-08-27 14:20:52,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.75) internal successors, (815), 4 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:52,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:52,891 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:52,891 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 166 flow. Second operand 4 states and 815 transitions. [2023-08-27 14:20:52,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 264 flow [2023-08-27 14:20:52,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:20:52,893 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 160 flow [2023-08-27 14:20:52,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-08-27 14:20:52,894 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2023-08-27 14:20:52,895 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 160 flow [2023-08-27 14:20:52,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.75) internal successors, (763), 4 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:52,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:20:52,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 14:20:52,907 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 14:20:53,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:20:53,110 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:20:53,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:20:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1359104, now seen corresponding path program 1 times [2023-08-27 14:20:53,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:20:53,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964979421] [2023-08-27 14:20:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:20:53,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:20:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:20:53,210 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 14:20:53,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:20:53,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964979421] [2023-08-27 14:20:53,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964979421] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:20:53,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053886800] [2023-08-27 14:20:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:20:53,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:20:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:20:53,216 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 14:20:53,237 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 14:20:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:20:53,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:20:53,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:20:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:20:53,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:20:53,385 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 14:20:53,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053886800] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:20:53,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:20:53,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 14:20:53,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284548097] [2023-08-27 14:20:53,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:20:53,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 14:20:53,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:20:53,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 14:20:53,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 14:20:53,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 497 [2023-08-27 14:20:53,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 191.14285714285714) internal successors, (1338), 7 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:53,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:20:53,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 497 [2023-08-27 14:20:53,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:20:57,202 INFO L124 PetriNetUnfolderBase]: 36530/45159 cut-off events. [2023-08-27 14:20:57,203 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 14:20:57,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89938 conditions, 45159 events. 36530/45159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240686 event pairs, 23250 based on Foata normal form. 0/12206 useless extension candidates. Maximal degree in co-relation 89853. Up to 44290 conditions per place. [2023-08-27 14:20:57,429 INFO L140 encePairwiseOnDemand]: 490/497 looper letters, 48 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2023-08-27 14:20:57,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 350 flow [2023-08-27 14:20:57,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 14:20:57,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 14:20:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2023-08-27 14:20:57,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061032863849765 [2023-08-27 14:20:57,434 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2023-08-27 14:20:57,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2023-08-27 14:20:57,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:20:57,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2023-08-27 14:20:57,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:57,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:57,444 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 497.0) internal successors, (3479), 7 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:57,444 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 160 flow. Second operand 6 states and 1211 transitions. [2023-08-27 14:20:57,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 350 flow [2023-08-27 14:20:57,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:20:57,446 INFO L231 Difference]: Finished difference. Result has 65 places, 71 transitions, 276 flow [2023-08-27 14:20:57,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=65, PETRI_TRANSITIONS=71} [2023-08-27 14:20:57,447 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-27 14:20:57,447 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 71 transitions, 276 flow [2023-08-27 14:20:57,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 191.14285714285714) internal successors, (1338), 7 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:57,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:20:57,448 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 14:20:57,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 14:20:57,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-27 14:20:57,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:20:57,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:20:57,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1836456830, now seen corresponding path program 2 times [2023-08-27 14:20:57,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:20:57,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437495927] [2023-08-27 14:20:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:20:57,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:20:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:20:57,744 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 14:20:57,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:20:57,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437495927] [2023-08-27 14:20:57,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437495927] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:20:57,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227781127] [2023-08-27 14:20:57,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 14:20:57,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:20:57,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:20:57,746 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 14:20:57,768 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 14:20:57,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 14:20:57,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 14:20:57,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 14:20:57,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:20:57,889 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 14:20:57,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:20:57,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227781127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:20:57,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:20:57,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 14:20:57,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104552655] [2023-08-27 14:20:57,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:20:57,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:20:57,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:20:57,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:20:57,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 14:20:57,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 497 [2023-08-27 14:20:57,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 71 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:20:57,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:20:57,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 497 [2023-08-27 14:20:57,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:21:01,462 INFO L124 PetriNetUnfolderBase]: 36530/45158 cut-off events. [2023-08-27 14:21:01,462 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 14:21:01,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89963 conditions, 45158 events. 36530/45158 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240596 event pairs, 23250 based on Foata normal form. 1/12209 useless extension candidates. Maximal degree in co-relation 89904. Up to 44295 conditions per place. [2023-08-27 14:21:01,737 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 58 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-08-27 14:21:01,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 394 flow [2023-08-27 14:21:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:21:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:21:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2023-08-27 14:21:01,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41918175720992623 [2023-08-27 14:21:01,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2023-08-27 14:21:01,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2023-08-27 14:21:01,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:21:01,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2023-08-27 14:21:01,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:01,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:01,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:01,746 INFO L175 Difference]: Start difference. First operand has 65 places, 71 transitions, 276 flow. Second operand 3 states and 625 transitions. [2023-08-27 14:21:01,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 394 flow [2023-08-27 14:21:01,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 368 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 14:21:01,749 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 252 flow [2023-08-27 14:21:01,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-08-27 14:21:01,749 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-27 14:21:01,750 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 252 flow [2023-08-27 14:21:01,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:01,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:21:01,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 14:21:01,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 14:21:01,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:21:01,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:21:01,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:21:01,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1842801519, now seen corresponding path program 1 times [2023-08-27 14:21:01,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:21:01,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466968391] [2023-08-27 14:21:01,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:01,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:21:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:02,277 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 14:21:02,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:21:02,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466968391] [2023-08-27 14:21:02,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466968391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:21:02,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:21:02,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 14:21:02,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36326288] [2023-08-27 14:21:02,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:21:02,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:21:02,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:21:02,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:21:02,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 14:21:02,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 497 [2023-08-27 14:21:02,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:02,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:21:02,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 497 [2023-08-27 14:21:02,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:21:06,203 INFO L124 PetriNetUnfolderBase]: 39254/48860 cut-off events. [2023-08-27 14:21:06,203 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-27 14:21:06,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97342 conditions, 48860 events. 39254/48860 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4497. Compared 266189 event pairs, 25199 based on Foata normal form. 0/14055 useless extension candidates. Maximal degree in co-relation 97261. Up to 44286 conditions per place. [2023-08-27 14:21:06,682 INFO L140 encePairwiseOnDemand]: 482/497 looper letters, 102 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2023-08-27 14:21:06,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 608 flow [2023-08-27 14:21:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 14:21:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 14:21:06,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 992 transitions. [2023-08-27 14:21:06,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991951710261569 [2023-08-27 14:21:06,685 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 992 transitions. [2023-08-27 14:21:06,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 992 transitions. [2023-08-27 14:21:06,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:21:06,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 992 transitions. [2023-08-27 14:21:06,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.4) internal successors, (992), 5 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:06,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:06,695 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:06,696 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 252 flow. Second operand 5 states and 992 transitions. [2023-08-27 14:21:06,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 608 flow [2023-08-27 14:21:06,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 596 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 14:21:06,699 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 291 flow [2023-08-27 14:21:06,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2023-08-27 14:21:06,700 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-27 14:21:06,700 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 291 flow [2023-08-27 14:21:06,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:06,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:21:06,700 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 14:21:06,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 14:21:06,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:21:06,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:21:06,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1294084438, now seen corresponding path program 1 times [2023-08-27 14:21:06,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:21:06,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490513480] [2023-08-27 14:21:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:06,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:21:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:06,780 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 14:21:06,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:21:06,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490513480] [2023-08-27 14:21:06,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490513480] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:21:06,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122261854] [2023-08-27 14:21:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:06,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:21:06,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:21:06,789 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 14:21:06,792 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 14:21:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:06,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 14:21:06,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:21:06,950 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 14:21:06,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:21:07,004 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 14:21:07,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122261854] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:21:07,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:21:07,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 14:21:07,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65847941] [2023-08-27 14:21:07,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:21:07,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 14:21:07,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:21:07,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 14:21:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 14:21:07,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 497 [2023-08-27 14:21:07,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 291 flow. Second operand has 13 states, 13 states have (on average 191.15384615384616) internal successors, (2485), 13 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:07,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:21:07,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 497 [2023-08-27 14:21:07,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:21:11,223 INFO L124 PetriNetUnfolderBase]: 39278/48896 cut-off events. [2023-08-27 14:21:11,223 INFO L125 PetriNetUnfolderBase]: For 3302/3302 co-relation queries the response was YES. [2023-08-27 14:21:11,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112898 conditions, 48896 events. 39278/48896 cut-off events. For 3302/3302 co-relation queries the response was YES. Maximal size of possible extension queue 4349. Compared 267786 event pairs, 25200 based on Foata normal form. 12/17348 useless extension candidates. Maximal degree in co-relation 112679. Up to 47919 conditions per place. [2023-08-27 14:21:11,513 INFO L140 encePairwiseOnDemand]: 491/497 looper letters, 47 selfloop transitions, 43 changer transitions 0/96 dead transitions. [2023-08-27 14:21:11,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 621 flow [2023-08-27 14:21:11,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 14:21:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 14:21:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2374 transitions. [2023-08-27 14:21:11,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3980549966465459 [2023-08-27 14:21:11,519 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2374 transitions. [2023-08-27 14:21:11,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2374 transitions. [2023-08-27 14:21:11,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:21:11,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2374 transitions. [2023-08-27 14:21:11,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 197.83333333333334) internal successors, (2374), 12 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:11,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:11,534 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:11,534 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 291 flow. Second operand 12 states and 2374 transitions. [2023-08-27 14:21:11,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 621 flow [2023-08-27 14:21:11,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 96 transitions, 613 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 14:21:11,539 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 573 flow [2023-08-27 14:21:11,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=573, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2023-08-27 14:21:11,540 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2023-08-27 14:21:11,540 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 573 flow [2023-08-27 14:21:11,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 191.15384615384616) internal successors, (2485), 13 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:11,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:21:11,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:21:11,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 14:21:11,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:21:11,747 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:21:11,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:21:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1101933682, now seen corresponding path program 1 times [2023-08-27 14:21:11,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:21:11,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725624083] [2023-08-27 14:21:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:11,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:21:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:11,819 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 14:21:11,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:21:11,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725624083] [2023-08-27 14:21:11,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725624083] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:21:11,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:21:11,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:21:11,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286583277] [2023-08-27 14:21:11,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:21:11,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:21:11,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:21:11,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:21:11,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:21:11,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 497 [2023-08-27 14:21:11,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 573 flow. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:11,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:21:11,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 497 [2023-08-27 14:21:11,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:21:18,572 INFO L124 PetriNetUnfolderBase]: 62974/79377 cut-off events. [2023-08-27 14:21:18,572 INFO L125 PetriNetUnfolderBase]: For 1851/1851 co-relation queries the response was YES. [2023-08-27 14:21:18,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177013 conditions, 79377 events. 62974/79377 cut-off events. For 1851/1851 co-relation queries the response was YES. Maximal size of possible extension queue 6682. Compared 476898 event pairs, 22563 based on Foata normal form. 0/31460 useless extension candidates. Maximal degree in co-relation 176891. Up to 40348 conditions per place. [2023-08-27 14:21:19,107 INFO L140 encePairwiseOnDemand]: 493/497 looper letters, 132 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2023-08-27 14:21:19,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 137 transitions, 946 flow [2023-08-27 14:21:19,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:21:19,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:21:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2023-08-27 14:21:19,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674714956405097 [2023-08-27 14:21:19,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2023-08-27 14:21:19,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2023-08-27 14:21:19,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:21:19,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2023-08-27 14:21:19,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:19,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:19,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:19,115 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 573 flow. Second operand 3 states and 697 transitions. [2023-08-27 14:21:19,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 137 transitions, 946 flow [2023-08-27 14:21:19,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 137 transitions, 818 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-27 14:21:19,125 INFO L231 Difference]: Finished difference. Result has 83 places, 97 transitions, 461 flow [2023-08-27 14:21:19,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=83, PETRI_TRANSITIONS=97} [2023-08-27 14:21:19,126 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2023-08-27 14:21:19,126 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 97 transitions, 461 flow [2023-08-27 14:21:19,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:19,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:21:19,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:21:19,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 14:21:19,127 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:21:19,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:21:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1101933681, now seen corresponding path program 1 times [2023-08-27 14:21:19,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:21:19,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814666308] [2023-08-27 14:21:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:19,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:21:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:19,244 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 14:21:19,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:21:19,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814666308] [2023-08-27 14:21:19,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814666308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:21:19,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908568466] [2023-08-27 14:21:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:19,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:21:19,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:21:19,246 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 14:21:19,297 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 14:21:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:19,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:21:19,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:21:19,431 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 14:21:19,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:21:19,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908568466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:21:19,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:21:19,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 14:21:19,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374246991] [2023-08-27 14:21:19,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:21:19,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:21:19,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:21:19,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:21:19,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 14:21:19,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 497 [2023-08-27 14:21:19,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:19,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:21:19,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 497 [2023-08-27 14:21:19,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:21:23,416 INFO L124 PetriNetUnfolderBase]: 33860/43435 cut-off events. [2023-08-27 14:21:23,416 INFO L125 PetriNetUnfolderBase]: For 9225/9281 co-relation queries the response was YES. [2023-08-27 14:21:23,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101661 conditions, 43435 events. 33860/43435 cut-off events. For 9225/9281 co-relation queries the response was YES. Maximal size of possible extension queue 3600. Compared 257004 event pairs, 24737 based on Foata normal form. 2049/19369 useless extension candidates. Maximal degree in co-relation 101561. Up to 42622 conditions per place. [2023-08-27 14:21:23,735 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 88 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2023-08-27 14:21:23,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 95 transitions, 631 flow [2023-08-27 14:21:23,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:21:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:21:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2023-08-27 14:21:23,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44064386317907445 [2023-08-27 14:21:23,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2023-08-27 14:21:23,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2023-08-27 14:21:23,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:21:23,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2023-08-27 14:21:23,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:23,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:23,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:23,746 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 461 flow. Second operand 3 states and 657 transitions. [2023-08-27 14:21:23,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 95 transitions, 631 flow [2023-08-27 14:21:23,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 95 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:21:23,754 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 453 flow [2023-08-27 14:21:23,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2023-08-27 14:21:23,754 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2023-08-27 14:21:23,755 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 453 flow [2023-08-27 14:21:23,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:23,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:21:23,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:21:23,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-27 14:21:23,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:21:23,960 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:21:23,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:21:23,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1413687870, now seen corresponding path program 1 times [2023-08-27 14:21:23,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:21:23,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941161527] [2023-08-27 14:21:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:23,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:21:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:24,068 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 14:21:24,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:21:24,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941161527] [2023-08-27 14:21:24,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941161527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:21:24,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:21:24,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 14:21:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069305399] [2023-08-27 14:21:24,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:21:24,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 14:21:24,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:21:24,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 14:21:24,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 14:21:24,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 497 [2023-08-27 14:21:24,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:24,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:21:24,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 497 [2023-08-27 14:21:24,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:21:28,027 INFO L124 PetriNetUnfolderBase]: 35505/46009 cut-off events. [2023-08-27 14:21:28,027 INFO L125 PetriNetUnfolderBase]: For 7805/7821 co-relation queries the response was YES. [2023-08-27 14:21:28,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106973 conditions, 46009 events. 35505/46009 cut-off events. For 7805/7821 co-relation queries the response was YES. Maximal size of possible extension queue 3753. Compared 279534 event pairs, 26288 based on Foata normal form. 0/19406 useless extension candidates. Maximal degree in co-relation 106950. Up to 42602 conditions per place. [2023-08-27 14:21:28,548 INFO L140 encePairwiseOnDemand]: 482/497 looper letters, 103 selfloop transitions, 15 changer transitions 0/124 dead transitions. [2023-08-27 14:21:28,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 781 flow [2023-08-27 14:21:28,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 14:21:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 14:21:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 804 transitions. [2023-08-27 14:21:28,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4044265593561368 [2023-08-27 14:21:28,550 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 804 transitions. [2023-08-27 14:21:28,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 804 transitions. [2023-08-27 14:21:28,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:21:28,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 804 transitions. [2023-08-27 14:21:28,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:28,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:28,555 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:28,555 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 453 flow. Second operand 4 states and 804 transitions. [2023-08-27 14:21:28,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 781 flow [2023-08-27 14:21:28,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 124 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:21:28,562 INFO L231 Difference]: Finished difference. Result has 85 places, 95 transitions, 508 flow [2023-08-27 14:21:28,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=508, PETRI_PLACES=85, PETRI_TRANSITIONS=95} [2023-08-27 14:21:28,563 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2023-08-27 14:21:28,563 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 95 transitions, 508 flow [2023-08-27 14:21:28,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:28,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:21:28,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:21:28,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 14:21:28,564 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:21:28,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:21:28,564 INFO L85 PathProgramCache]: Analyzing trace with hash -199790924, now seen corresponding path program 1 times [2023-08-27 14:21:28,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:21:28,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377034001] [2023-08-27 14:21:28,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:28,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:21:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:28,632 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 14:21:28,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:21:28,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377034001] [2023-08-27 14:21:28,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377034001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:21:28,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559110709] [2023-08-27 14:21:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:28,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:21:28,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:21:28,637 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 14:21:28,656 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 14:21:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:28,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:21:28,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:21:28,796 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 14:21:28,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:21:28,814 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 14:21:28,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559110709] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:21:28,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:21:28,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 14:21:28,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927335496] [2023-08-27 14:21:28,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:21:28,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 14:21:28,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:21:28,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 14:21:28,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 14:21:28,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 497 [2023-08-27 14:21:28,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 95 transitions, 508 flow. Second operand has 7 states, 7 states have (on average 204.28571428571428) internal successors, (1430), 7 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:28,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:21:28,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 497 [2023-08-27 14:21:28,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:21:39,492 INFO L124 PetriNetUnfolderBase]: 95779/120806 cut-off events. [2023-08-27 14:21:39,492 INFO L125 PetriNetUnfolderBase]: For 12450/12450 co-relation queries the response was YES. [2023-08-27 14:21:39,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330974 conditions, 120806 events. 95779/120806 cut-off events. For 12450/12450 co-relation queries the response was YES. Maximal size of possible extension queue 6563. Compared 737401 event pairs, 17937 based on Foata normal form. 0/62598 useless extension candidates. Maximal degree in co-relation 330950. Up to 48589 conditions per place. [2023-08-27 14:21:40,391 INFO L140 encePairwiseOnDemand]: 493/497 looper letters, 270 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2023-08-27 14:21:40,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 282 transitions, 1665 flow [2023-08-27 14:21:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 14:21:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 14:21:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1647 transitions. [2023-08-27 14:21:40,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734118999712561 [2023-08-27 14:21:40,395 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1647 transitions. [2023-08-27 14:21:40,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1647 transitions. [2023-08-27 14:21:40,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:21:40,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1647 transitions. [2023-08-27 14:21:40,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 235.28571428571428) internal successors, (1647), 7 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:40,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:40,404 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:40,404 INFO L175 Difference]: Start difference. First operand has 85 places, 95 transitions, 508 flow. Second operand 7 states and 1647 transitions. [2023-08-27 14:21:40,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 282 transitions, 1665 flow [2023-08-27 14:21:40,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 282 transitions, 1634 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 14:21:40,618 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 548 flow [2023-08-27 14:21:40,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=548, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2023-08-27 14:21:40,619 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-08-27 14:21:40,619 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 548 flow [2023-08-27 14:21:40,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.28571428571428) internal successors, (1430), 7 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:40,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:21:40,620 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:21:40,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 14:21:40,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:21:40,825 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:21:40,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:21:40,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1898548078, now seen corresponding path program 1 times [2023-08-27 14:21:40,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:21:40,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533879446] [2023-08-27 14:21:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:40,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:21:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 14:21:40,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:21:40,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533879446] [2023-08-27 14:21:40,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533879446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:21:40,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:21:40,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 14:21:40,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394690809] [2023-08-27 14:21:40,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:21:40,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:21:40,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:21:40,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:21:40,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:21:40,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 497 [2023-08-27 14:21:40,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:40,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:21:40,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 497 [2023-08-27 14:21:40,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:21:50,678 INFO L124 PetriNetUnfolderBase]: 87061/110936 cut-off events. [2023-08-27 14:21:50,679 INFO L125 PetriNetUnfolderBase]: For 69515/69515 co-relation queries the response was YES. [2023-08-27 14:21:51,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311431 conditions, 110936 events. 87061/110936 cut-off events. For 69515/69515 co-relation queries the response was YES. Maximal size of possible extension queue 6191. Compared 688870 event pairs, 64683 based on Foata normal form. 2544/64212 useless extension candidates. Maximal degree in co-relation 311404. Up to 110496 conditions per place. [2023-08-27 14:21:51,514 INFO L140 encePairwiseOnDemand]: 495/497 looper letters, 93 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-27 14:21:51,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 97 transitions, 701 flow [2023-08-27 14:21:51,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:21:51,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:21:51,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2023-08-27 14:21:51,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43729040912139505 [2023-08-27 14:21:51,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2023-08-27 14:21:51,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2023-08-27 14:21:51,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:21:51,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2023-08-27 14:21:51,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:51,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:51,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:51,520 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 548 flow. Second operand 3 states and 652 transitions. [2023-08-27 14:21:51,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 97 transitions, 701 flow [2023-08-27 14:21:51,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 97 transitions, 693 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 14:21:51,588 INFO L231 Difference]: Finished difference. Result has 91 places, 97 transitions, 507 flow [2023-08-27 14:21:51,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=507, PETRI_PLACES=91, PETRI_TRANSITIONS=97} [2023-08-27 14:21:51,589 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 19 predicate places. [2023-08-27 14:21:51,589 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 97 transitions, 507 flow [2023-08-27 14:21:51,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:51,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:21:51,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:21:51,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 14:21:51,590 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:21:51,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:21:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1973528691, now seen corresponding path program 1 times [2023-08-27 14:21:51,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:21:51,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38644913] [2023-08-27 14:21:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:51,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:21:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:51,635 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 14:21:51,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:21:51,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38644913] [2023-08-27 14:21:51,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38644913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:21:51,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:21:51,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:21:51,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628792943] [2023-08-27 14:21:51,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:21:51,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:21:51,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:21:51,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:21:51,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:21:51,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 497 [2023-08-27 14:21:51,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 97 transitions, 507 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:51,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:21:51,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 497 [2023-08-27 14:21:51,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:21:58,868 INFO L124 PetriNetUnfolderBase]: 58777/76201 cut-off events. [2023-08-27 14:21:58,869 INFO L125 PetriNetUnfolderBase]: For 37243/37267 co-relation queries the response was YES. [2023-08-27 14:21:59,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214416 conditions, 76201 events. 58777/76201 cut-off events. For 37243/37267 co-relation queries the response was YES. Maximal size of possible extension queue 4820. Compared 486834 event pairs, 44876 based on Foata normal form. 0/41819 useless extension candidates. Maximal degree in co-relation 214388. Up to 75147 conditions per place. [2023-08-27 14:21:59,451 INFO L140 encePairwiseOnDemand]: 495/497 looper letters, 89 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2023-08-27 14:21:59,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 96 transitions, 683 flow [2023-08-27 14:21:59,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:21:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:21:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-08-27 14:21:59,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386317907444668 [2023-08-27 14:21:59,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-08-27 14:21:59,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-08-27 14:21:59,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:21:59,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-08-27 14:21:59,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:59,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:59,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:59,456 INFO L175 Difference]: Start difference. First operand has 91 places, 97 transitions, 507 flow. Second operand 3 states and 654 transitions. [2023-08-27 14:21:59,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 96 transitions, 683 flow [2023-08-27 14:21:59,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:21:59,499 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 504 flow [2023-08-27 14:21:59,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2023-08-27 14:21:59,500 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 19 predicate places. [2023-08-27 14:21:59,500 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 504 flow [2023-08-27 14:21:59,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:59,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:21:59,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:21:59,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 14:21:59,501 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:21:59,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:21:59,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1973528687, now seen corresponding path program 1 times [2023-08-27 14:21:59,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:21:59,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497278001] [2023-08-27 14:21:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:21:59,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:21:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:21:59,540 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 14:21:59,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:21:59,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497278001] [2023-08-27 14:21:59,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497278001] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:21:59,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:21:59,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:21:59,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3145186] [2023-08-27 14:21:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:21:59,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:21:59,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:21:59,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:21:59,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:21:59,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 497 [2023-08-27 14:21:59,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:21:59,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:21:59,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 497 [2023-08-27 14:21:59,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:22:05,681 INFO L124 PetriNetUnfolderBase]: 51799/69534 cut-off events. [2023-08-27 14:22:05,681 INFO L125 PetriNetUnfolderBase]: For 44911/44925 co-relation queries the response was YES. [2023-08-27 14:22:06,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190616 conditions, 69534 events. 51799/69534 cut-off events. For 44911/44925 co-relation queries the response was YES. Maximal size of possible extension queue 4673. Compared 475813 event pairs, 46909 based on Foata normal form. 0/45678 useless extension candidates. Maximal degree in co-relation 190587. Up to 69490 conditions per place. [2023-08-27 14:22:06,229 INFO L140 encePairwiseOnDemand]: 495/497 looper letters, 91 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2023-08-27 14:22:06,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 95 transitions, 684 flow [2023-08-27 14:22:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:22:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:22:06,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-27 14:22:06,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43594902749832326 [2023-08-27 14:22:06,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-27 14:22:06,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-27 14:22:06,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:22:06,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-27 14:22:06,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:06,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:06,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:06,235 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 504 flow. Second operand 3 states and 650 transitions. [2023-08-27 14:22:06,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 95 transitions, 684 flow [2023-08-27 14:22:06,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 95 transitions, 683 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:22:06,308 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 501 flow [2023-08-27 14:22:06,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=91, PETRI_TRANSITIONS=95} [2023-08-27 14:22:06,309 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 19 predicate places. [2023-08-27 14:22:06,309 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 501 flow [2023-08-27 14:22:06,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:06,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:22:06,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:22:06,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 14:22:06,309 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:22:06,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:22:06,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1973528688, now seen corresponding path program 1 times [2023-08-27 14:22:06,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:22:06,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465865855] [2023-08-27 14:22:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:22:06,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:22:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:22:06,395 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 14:22:06,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:22:06,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465865855] [2023-08-27 14:22:06,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465865855] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:22:06,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489908817] [2023-08-27 14:22:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:22:06,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:22:06,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:22:06,397 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 14:22:06,426 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 14:22:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:22:06,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 14:22:06,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:22:06,556 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 14:22:06,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 14:22:06,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489908817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:22:06,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 14:22:06,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 14:22:06,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990043717] [2023-08-27 14:22:06,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:22:06,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:22:06,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:22:06,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:22:06,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 14:22:06,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 497 [2023-08-27 14:22:06,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 95 transitions, 501 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:06,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:22:06,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 497 [2023-08-27 14:22:06,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:22:11,052 INFO L124 PetriNetUnfolderBase]: 37424/49298 cut-off events. [2023-08-27 14:22:11,052 INFO L125 PetriNetUnfolderBase]: For 25562/25580 co-relation queries the response was YES. [2023-08-27 14:22:11,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136726 conditions, 49298 events. 37424/49298 cut-off events. For 25562/25580 co-relation queries the response was YES. Maximal size of possible extension queue 3101. Compared 313011 event pairs, 29063 based on Foata normal form. 0/30736 useless extension candidates. Maximal degree in co-relation 136696. Up to 48504 conditions per place. [2023-08-27 14:22:11,453 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 86 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-08-27 14:22:11,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 667 flow [2023-08-27 14:22:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:22:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:22:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2023-08-27 14:22:11,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43729040912139505 [2023-08-27 14:22:11,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2023-08-27 14:22:11,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2023-08-27 14:22:11,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:22:11,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2023-08-27 14:22:11,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:11,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:11,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:11,459 INFO L175 Difference]: Start difference. First operand has 91 places, 95 transitions, 501 flow. Second operand 3 states and 652 transitions. [2023-08-27 14:22:11,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 667 flow [2023-08-27 14:22:11,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:22:11,488 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 494 flow [2023-08-27 14:22:11,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2023-08-27 14:22:11,489 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2023-08-27 14:22:11,489 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 494 flow [2023-08-27 14:22:11,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:11,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:22:11,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:22:11,495 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 14:22:11,695 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 14:22:11,695 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:22:11,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:22:11,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1973528686, now seen corresponding path program 1 times [2023-08-27 14:22:11,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:22:11,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469924100] [2023-08-27 14:22:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:22:11,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:22:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:22:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 14:22:11,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:22:11,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469924100] [2023-08-27 14:22:11,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469924100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:22:11,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:22:11,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:22:11,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422513406] [2023-08-27 14:22:11,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:22:11,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:22:11,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:22:11,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:22:11,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:22:11,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 497 [2023-08-27 14:22:11,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:11,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:22:11,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 497 [2023-08-27 14:22:11,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:22:19,062 INFO L124 PetriNetUnfolderBase]: 61317/82402 cut-off events. [2023-08-27 14:22:19,063 INFO L125 PetriNetUnfolderBase]: For 53957/53971 co-relation queries the response was YES. [2023-08-27 14:22:19,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224572 conditions, 82402 events. 61317/82402 cut-off events. For 53957/53971 co-relation queries the response was YES. Maximal size of possible extension queue 5247. Compared 590493 event pairs, 30363 based on Foata normal form. 0/56788 useless extension candidates. Maximal degree in co-relation 224541. Up to 44166 conditions per place. [2023-08-27 14:22:19,729 INFO L140 encePairwiseOnDemand]: 494/497 looper letters, 125 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-27 14:22:19,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 130 transitions, 891 flow [2023-08-27 14:22:19,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:22:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:22:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-27 14:22:19,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567404426559356 [2023-08-27 14:22:19,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-27 14:22:19,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-27 14:22:19,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:22:19,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-27 14:22:19,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:19,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:19,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:19,734 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 494 flow. Second operand 3 states and 681 transitions. [2023-08-27 14:22:19,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 130 transitions, 891 flow [2023-08-27 14:22:19,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 130 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:22:19,780 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 507 flow [2023-08-27 14:22:19,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=507, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2023-08-27 14:22:19,780 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-08-27 14:22:19,780 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 507 flow [2023-08-27 14:22:19,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:19,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:22:19,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:22:19,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 14:22:19,781 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:22:19,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:22:19,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1973528690, now seen corresponding path program 1 times [2023-08-27 14:22:19,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:22:19,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828019292] [2023-08-27 14:22:19,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:22:19,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:22:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:22:19,871 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 14:22:19,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:22:19,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828019292] [2023-08-27 14:22:19,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828019292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:22:19,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:22:19,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 14:22:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352527308] [2023-08-27 14:22:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:22:19,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:22:19,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:22:19,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:22:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:22:19,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 497 [2023-08-27 14:22:19,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 507 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:19,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:22:19,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 497 [2023-08-27 14:22:19,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:22:24,287 INFO L124 PetriNetUnfolderBase]: 32815/45242 cut-off events. [2023-08-27 14:22:24,287 INFO L125 PetriNetUnfolderBase]: For 35737/35880 co-relation queries the response was YES. [2023-08-27 14:22:24,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131388 conditions, 45242 events. 32815/45242 cut-off events. For 35737/35880 co-relation queries the response was YES. Maximal size of possible extension queue 2990. Compared 319587 event pairs, 30023 based on Foata normal form. 3674/35136 useless extension candidates. Maximal degree in co-relation 131355. Up to 44531 conditions per place. [2023-08-27 14:22:24,621 INFO L140 encePairwiseOnDemand]: 495/497 looper letters, 75 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2023-08-27 14:22:24,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 93 transitions, 677 flow [2023-08-27 14:22:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 14:22:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 14:22:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2023-08-27 14:22:24,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43594902749832326 [2023-08-27 14:22:24,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2023-08-27 14:22:24,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2023-08-27 14:22:24,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:22:24,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2023-08-27 14:22:24,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:24,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:24,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:24,626 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 507 flow. Second operand 3 states and 650 transitions. [2023-08-27 14:22:24,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 93 transitions, 677 flow [2023-08-27 14:22:24,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 675 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:22:24,653 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 525 flow [2023-08-27 14:22:24,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=525, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2023-08-27 14:22:24,654 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-08-27 14:22:24,654 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 525 flow [2023-08-27 14:22:24,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:24,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:22:24,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:22:24,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 14:22:24,655 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:22:24,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:22:24,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1049844681, now seen corresponding path program 1 times [2023-08-27 14:22:24,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:22:24,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380267913] [2023-08-27 14:22:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:22:24,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:22:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:22:24,705 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 14:22:24,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:22:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380267913] [2023-08-27 14:22:24,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380267913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 14:22:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142842383] [2023-08-27 14:22:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:22:24,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 14:22:24,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 14:22:24,709 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 14:22:24,741 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 14:22:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:22:24,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 14:22:24,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 14:22:24,910 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 14:22:24,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 14:22:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 14:22:24,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142842383] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 14:22:24,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 14:22:24,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 10 [2023-08-27 14:22:24,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785021782] [2023-08-27 14:22:24,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 14:22:24,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 14:22:24,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:22:24,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 14:22:24,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-27 14:22:24,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 497 [2023-08-27 14:22:24,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 525 flow. Second operand has 11 states, 11 states have (on average 174.27272727272728) internal successors, (1917), 11 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:24,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:22:24,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 497 [2023-08-27 14:22:24,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 14:22:37,828 INFO L124 PetriNetUnfolderBase]: 101537/136744 cut-off events. [2023-08-27 14:22:37,828 INFO L125 PetriNetUnfolderBase]: For 97948/97955 co-relation queries the response was YES. [2023-08-27 14:22:38,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376653 conditions, 136744 events. 101537/136744 cut-off events. For 97948/97955 co-relation queries the response was YES. Maximal size of possible extension queue 7626. Compared 1026596 event pairs, 32700 based on Foata normal form. 3728/102741 useless extension candidates. Maximal degree in co-relation 376620. Up to 34619 conditions per place. [2023-08-27 14:22:39,005 INFO L140 encePairwiseOnDemand]: 485/497 looper letters, 272 selfloop transitions, 27 changer transitions 0/302 dead transitions. [2023-08-27 14:22:39,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 302 transitions, 1931 flow [2023-08-27 14:22:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 14:22:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 14:22:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2129 transitions. [2023-08-27 14:22:39,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894274739345162 [2023-08-27 14:22:39,009 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2129 transitions. [2023-08-27 14:22:39,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2129 transitions. [2023-08-27 14:22:39,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 14:22:39,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2129 transitions. [2023-08-27 14:22:39,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.54545454545453) internal successors, (2129), 11 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:39,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 497.0) internal successors, (5964), 12 states have internal predecessors, (5964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:39,016 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 497.0) internal successors, (5964), 12 states have internal predecessors, (5964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:39,016 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 525 flow. Second operand 11 states and 2129 transitions. [2023-08-27 14:22:39,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 302 transitions, 1931 flow [2023-08-27 14:22:39,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 302 transitions, 1919 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 14:22:39,080 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 627 flow [2023-08-27 14:22:39,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=627, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2023-08-27 14:22:39,081 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 32 predicate places. [2023-08-27 14:22:39,081 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 627 flow [2023-08-27 14:22:39,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 174.27272727272728) internal successors, (1917), 11 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:39,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 14:22:39,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 14:22:39,089 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 14:22:39,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 14:22:39,287 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 14:22:39,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 14:22:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash -184593178, now seen corresponding path program 1 times [2023-08-27 14:22:39,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 14:22:39,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183666794] [2023-08-27 14:22:39,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 14:22:39,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 14:22:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 14:22:39,355 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 14:22:39,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 14:22:39,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183666794] [2023-08-27 14:22:39,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183666794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 14:22:39,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 14:22:39,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 14:22:39,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714964199] [2023-08-27 14:22:39,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 14:22:39,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 14:22:39,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 14:22:39,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 14:22:39,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 14:22:39,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 497 [2023-08-27 14:22:39,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 627 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 14:22:39,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 14:22:39,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 497 [2023-08-27 14:22:39,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand