/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-bad-buffer-mult-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 13:44:16,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 13:44:16,386 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 13:44:16,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 13:44:16,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 13:44:16,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 13:44:16,426 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 13:44:16,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 13:44:16,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 13:44:16,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 13:44:16,437 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 13:44:16,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 13:44:16,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 13:44:16,437 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 13:44:16,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 13:44:16,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 13:44:16,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 13:44:16,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 13:44:16,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 13:44:16,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 13:44:16,439 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 13:44:16,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 13:44:16,441 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 13:44:16,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 13:44:16,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 13:44:16,442 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 13:44:16,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 13:44:16,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:44:16,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 13:44:16,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 13:44:16,444 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 13:44:16,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 13:44:16,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 13:44:16,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 13:44:16,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 13:44:16,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 13:44:16,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 13:44:16,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 13:44:16,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 13:44:16,769 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 13:44:16,772 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 13:44:16,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-08-27 13:44:17,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 13:44:18,254 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 13:44:18,255 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-08-27 13:44:18,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4053270e9/6e7873c359e145b9aa404dbf2f1f02d0/FLAGc8cf926f4 [2023-08-27 13:44:18,283 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4053270e9/6e7873c359e145b9aa404dbf2f1f02d0 [2023-08-27 13:44:18,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 13:44:18,290 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 13:44:18,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 13:44:18,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 13:44:18,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 13:44:18,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb97ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18, skipping insertion in model container [2023-08-27 13:44:18,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,328 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 13:44:18,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:44:18,542 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 13:44:18,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:44:18,600 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:44:18,600 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:44:18,606 INFO L206 MainTranslator]: Completed translation [2023-08-27 13:44:18,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18 WrapperNode [2023-08-27 13:44:18,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 13:44:18,608 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 13:44:18,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 13:44:18,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 13:44:18,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,681 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 376 [2023-08-27 13:44:18,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 13:44:18,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 13:44:18,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 13:44:18,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 13:44:18,691 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 13:44:18,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 13:44:18,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 13:44:18,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 13:44:18,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (1/1) ... [2023-08-27 13:44:18,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:44:18,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:18,760 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 13:44:18,774 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 13:44:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 13:44:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 13:44:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 13:44:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 13:44:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 13:44:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 13:44:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 13:44:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 13:44:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 13:44:18,789 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 13:44:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 13:44:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 13:44:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 13:44:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 13:44:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 13:44:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 13:44:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 13:44:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 13:44:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 13:44:18,792 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 13:44:18,892 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 13:44:18,893 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 13:44:19,421 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 13:44:19,866 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 13:44:19,866 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-27 13:44:19,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:44:19 BoogieIcfgContainer [2023-08-27 13:44:19,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 13:44:19,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 13:44:19,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 13:44:19,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 13:44:19,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:44:18" (1/3) ... [2023-08-27 13:44:19,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbdba3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:44:19, skipping insertion in model container [2023-08-27 13:44:19,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:44:18" (2/3) ... [2023-08-27 13:44:19,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbdba3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:44:19, skipping insertion in model container [2023-08-27 13:44:19,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:44:19" (3/3) ... [2023-08-27 13:44:19,876 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2023-08-27 13:44:19,892 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 13:44:19,892 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-08-27 13:44:19,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 13:44:20,068 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 13:44:20,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 274 transitions, 580 flow [2023-08-27 13:44:20,217 INFO L124 PetriNetUnfolderBase]: 19/270 cut-off events. [2023-08-27 13:44:20,217 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 13:44:20,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 270 events. 19/270 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 297 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-27 13:44:20,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 274 transitions, 580 flow [2023-08-27 13:44:20,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 257 transitions, 538 flow [2023-08-27 13:44:20,244 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 13:44:20,255 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 257 transitions, 538 flow [2023-08-27 13:44:20,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 257 transitions, 538 flow [2023-08-27 13:44:20,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 257 transitions, 538 flow [2023-08-27 13:44:20,332 INFO L124 PetriNetUnfolderBase]: 19/257 cut-off events. [2023-08-27 13:44:20,332 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 13:44:20,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 257 events. 19/257 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 294 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-27 13:44:20,336 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-08-27 13:44:36,106 INFO L134 LiptonReduction]: Checked pairs total: 7577 [2023-08-27 13:44:36,106 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-08-27 13:44:36,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 13:44:36,124 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;@2b9856a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 13:44:36,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-27 13:44:36,127 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 13:44:36,127 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 13:44:36,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 13:44:36,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:36,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 13:44:36,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:44:36,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:36,132 INFO L85 PathProgramCache]: Analyzing trace with hash 46250, now seen corresponding path program 1 times [2023-08-27 13:44:36,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:36,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915779572] [2023-08-27 13:44:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:36,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:36,453 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 13:44:36,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:36,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915779572] [2023-08-27 13:44:36,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915779572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:36,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:36,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:44:36,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536674206] [2023-08-27 13:44:36,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:36,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:36,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:36,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:44:36,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 540 [2023-08-27 13:44:36,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:36,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:36,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 540 [2023-08-27 13:44:36,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:41,270 INFO L124 PetriNetUnfolderBase]: 36524/45149 cut-off events. [2023-08-27 13:44:41,271 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2023-08-27 13:44:41,378 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 240874 event pairs, 23250 based on Foata normal form. 0/11807 useless extension candidates. Maximal degree in co-relation 80304. Up to 44289 conditions per place. [2023-08-27 13:44:41,643 INFO L140 encePairwiseOnDemand]: 523/540 looper letters, 50 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-08-27 13:44:41,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 256 flow [2023-08-27 13:44:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2023-08-27 13:44:41,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228395061728395 [2023-08-27 13:44:41,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2023-08-27 13:44:41,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2023-08-27 13:44:41,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:41,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2023-08-27 13:44:41,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,688 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 154 flow. Second operand 3 states and 685 transitions. [2023-08-27 13:44:41,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 256 flow [2023-08-27 13:44:41,780 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 13:44:41,782 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 166 flow [2023-08-27 13:44:41,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, 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 13:44:41,787 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2023-08-27 13:44:41,787 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 166 flow [2023-08-27 13:44:41,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:41,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:41,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 13:44:41,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 13:44:41,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:44:41,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:41,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1436042, now seen corresponding path program 1 times [2023-08-27 13:44:41,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:41,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486348239] [2023-08-27 13:44:41,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:41,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:41,939 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 13:44:41,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486348239] [2023-08-27 13:44:41,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486348239] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:44:41,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441237722] [2023-08-27 13:44:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:41,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:44:41,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:44:41,947 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 13:44:41,951 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 13:44:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:42,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 13:44:42,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:44:42,176 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 13:44:42,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:44:42,191 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 13:44:42,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441237722] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:44:42,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:44:42,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 13:44:42,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447855120] [2023-08-27 13:44:42,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:44:42,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:44:42,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:44:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:44:42,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 540 [2023-08-27 13:44:42,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:42,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:42,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 540 [2023-08-27 13:44:42,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:46,217 INFO L124 PetriNetUnfolderBase]: 36536/45167 cut-off events. [2023-08-27 13:44:46,218 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 13:44:46,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89958 conditions, 45167 events. 36536/45167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 241340 event pairs, 23250 based on Foata normal form. 0/11818 useless extension candidates. Maximal degree in co-relation 89853. Up to 44290 conditions per place. [2023-08-27 13:44:46,501 INFO L140 encePairwiseOnDemand]: 531/540 looper letters, 48 selfloop transitions, 25 changer transitions 0/79 dead transitions. [2023-08-27 13:44:46,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 390 flow [2023-08-27 13:44:46,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:44:46,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:44:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1521 transitions. [2023-08-27 13:44:46,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2023-08-27 13:44:46,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1521 transitions. [2023-08-27 13:44:46,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1521 transitions. [2023-08-27 13:44:46,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:46,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1521 transitions. [2023-08-27 13:44:46,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 217.28571428571428) internal successors, (1521), 7 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 540.0) internal successors, (4320), 8 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,523 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 540.0) internal successors, (4320), 8 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,523 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 166 flow. Second operand 7 states and 1521 transitions. [2023-08-27 13:44:46,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 390 flow [2023-08-27 13:44:46,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:44:46,526 INFO L231 Difference]: Finished difference. Result has 67 places, 79 transitions, 320 flow [2023-08-27 13:44:46,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=67, PETRI_TRANSITIONS=79} [2023-08-27 13:44:46,528 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-08-27 13:44:46,528 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 79 transitions, 320 flow [2023-08-27 13:44:46,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 207.14285714285714) internal successors, (1450), 7 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:46,530 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 13:44:46,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 13:44:46,736 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 13:44:46,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:44:46,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:46,737 INFO L85 PathProgramCache]: Analyzing trace with hash 44519595, now seen corresponding path program 1 times [2023-08-27 13:44:46,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:46,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173164541] [2023-08-27 13:44:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:46,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 13:44:46,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:46,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173164541] [2023-08-27 13:44:46,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173164541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:46,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:46,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:44:46,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724535455] [2023-08-27 13:44:46,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:46,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:46,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:46,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:46,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:44:46,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 540 [2023-08-27 13:44:46,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 79 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:46,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:46,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 540 [2023-08-27 13:44:46,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:50,725 INFO L124 PetriNetUnfolderBase]: 36530/45159 cut-off events. [2023-08-27 13:44:50,725 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 13:44:50,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89967 conditions, 45159 events. 36530/45159 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 240687 event pairs, 23250 based on Foata normal form. 0/11821 useless extension candidates. Maximal degree in co-relation 89902. Up to 44284 conditions per place. [2023-08-27 13:44:51,036 INFO L140 encePairwiseOnDemand]: 536/540 looper letters, 59 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-08-27 13:44:51,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 396 flow [2023-08-27 13:44:51,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-08-27 13:44:51,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.412962962962963 [2023-08-27 13:44:51,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-08-27 13:44:51,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-08-27 13:44:51,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:51,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-08-27 13:44:51,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:51,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:51,046 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:51,046 INFO L175 Difference]: Start difference. First operand has 67 places, 79 transitions, 320 flow. Second operand 3 states and 669 transitions. [2023-08-27 13:44:51,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 396 flow [2023-08-27 13:44:51,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 71 transitions, 370 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 13:44:51,049 INFO L231 Difference]: Finished difference. Result has 65 places, 71 transitions, 252 flow [2023-08-27 13:44:51,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=65, PETRI_TRANSITIONS=71} [2023-08-27 13:44:51,051 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-08-27 13:44:51,051 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 71 transitions, 252 flow [2023-08-27 13:44:51,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:51,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:51,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 13:44:51,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 13:44:51,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:44:51,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash -144920331, now seen corresponding path program 1 times [2023-08-27 13:44:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:51,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973223072] [2023-08-27 13:44:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:51,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:51,133 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 13:44:51,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:51,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973223072] [2023-08-27 13:44:51,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973223072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:51,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:51,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:44:51,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407165653] [2023-08-27 13:44:51,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:51,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:44:51,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:51,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:44:51,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:44:51,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 540 [2023-08-27 13:44:51,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 71 transitions, 252 flow. Second operand has 3 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 13:44:51,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:51,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 540 [2023-08-27 13:44:51,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:44:57,203 INFO L124 PetriNetUnfolderBase]: 58348/72895 cut-off events. [2023-08-27 13:44:57,203 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 13:44:57,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146419 conditions, 72895 events. 58348/72895 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6463. Compared 427753 event pairs, 22222 based on Foata normal form. 0/22930 useless extension candidates. Maximal degree in co-relation 146358. Up to 39038 conditions per place. [2023-08-27 13:44:57,557 INFO L140 encePairwiseOnDemand]: 536/540 looper letters, 107 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2023-08-27 13:44:57,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 113 transitions, 563 flow [2023-08-27 13:44:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:44:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:44:57,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-08-27 13:44:57,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604938271604938 [2023-08-27 13:44:57,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-08-27 13:44:57,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-08-27 13:44:57,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:44:57,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-08-27 13:44:57,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:57,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:57,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:57,566 INFO L175 Difference]: Start difference. First operand has 65 places, 71 transitions, 252 flow. Second operand 3 states and 746 transitions. [2023-08-27 13:44:57,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 113 transitions, 563 flow [2023-08-27 13:44:57,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 113 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:44:57,569 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 262 flow [2023-08-27 13:44:57,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2023-08-27 13:44:57,570 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-08-27 13:44:57,570 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 262 flow [2023-08-27 13:44:57,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 13:44:57,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:44:57,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 13:44:57,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 13:44:57,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:44:57,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:44:57,571 INFO L85 PathProgramCache]: Analyzing trace with hash -144920333, now seen corresponding path program 1 times [2023-08-27 13:44:57,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:44:57,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347102001] [2023-08-27 13:44:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:44:57,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:44:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:44:57,650 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 13:44:57,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:44:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347102001] [2023-08-27 13:44:57,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347102001] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:44:57,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:44:57,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:44:57,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437911843] [2023-08-27 13:44:57,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:44:57,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:44:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:44:57,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:44:57,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:44:57,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 540 [2023-08-27 13:44:57,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:44:57,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:44:57,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 540 [2023-08-27 13:44:57,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:45:02,933 INFO L124 PetriNetUnfolderBase]: 48921/62183 cut-off events. [2023-08-27 13:45:02,933 INFO L125 PetriNetUnfolderBase]: For 10577/10577 co-relation queries the response was YES. [2023-08-27 13:45:03,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132026 conditions, 62183 events. 48921/62183 cut-off events. For 10577/10577 co-relation queries the response was YES. Maximal size of possible extension queue 5659. Compared 371087 event pairs, 35291 based on Foata normal form. 608/23752 useless extension candidates. Maximal degree in co-relation 131940. Up to 57320 conditions per place. [2023-08-27 13:45:03,302 INFO L140 encePairwiseOnDemand]: 528/540 looper letters, 107 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-27 13:45:03,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 116 transitions, 619 flow [2023-08-27 13:45:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 13:45:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 13:45:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 875 transitions. [2023-08-27 13:45:03,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050925925925926 [2023-08-27 13:45:03,305 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 875 transitions. [2023-08-27 13:45:03,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 875 transitions. [2023-08-27 13:45:03,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:45:03,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 875 transitions. [2023-08-27 13:45:03,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:03,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 540.0) internal successors, (2700), 5 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:03,311 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 540.0) internal successors, (2700), 5 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:03,312 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 262 flow. Second operand 4 states and 875 transitions. [2023-08-27 13:45:03,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 116 transitions, 619 flow [2023-08-27 13:45:03,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 613 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:45:03,324 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 281 flow [2023-08-27 13:45:03,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2023-08-27 13:45:03,325 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-27 13:45:03,326 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 281 flow [2023-08-27 13:45:03,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:03,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:45:03,326 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 13:45:03,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 13:45:03,326 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:45:03,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:45:03,327 INFO L85 PathProgramCache]: Analyzing trace with hash -166269782, now seen corresponding path program 2 times [2023-08-27 13:45:03,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:45:03,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726277851] [2023-08-27 13:45:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:03,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:45:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:03,403 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 13:45:03,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:45:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726277851] [2023-08-27 13:45:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726277851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:45:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458000856] [2023-08-27 13:45:03,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 13:45:03,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:45:03,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:45:03,406 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 13:45:03,571 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 13:45:03,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 13:45:03,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:45:03,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 13:45:03,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:45:03,722 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 13:45:03,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:45:03,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458000856] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:45:03,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:45:03,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 13:45:03,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867924852] [2023-08-27 13:45:03,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:45:03,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:45:03,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:45:03,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:45:03,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 13:45:03,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 540 [2023-08-27 13:45:03,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:03,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:45:03,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 540 [2023-08-27 13:45:03,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:45:09,358 INFO L124 PetriNetUnfolderBase]: 48920/62166 cut-off events. [2023-08-27 13:45:09,358 INFO L125 PetriNetUnfolderBase]: For 8293/8293 co-relation queries the response was YES. [2023-08-27 13:45:09,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143001 conditions, 62166 events. 48920/62166 cut-off events. For 8293/8293 co-relation queries the response was YES. Maximal size of possible extension queue 5589. Compared 373367 event pairs, 35293 based on Foata normal form. 1/23923 useless extension candidates. Maximal degree in co-relation 142920. Up to 60952 conditions per place. [2023-08-27 13:45:09,716 INFO L140 encePairwiseOnDemand]: 537/540 looper letters, 60 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-08-27 13:45:09,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 403 flow [2023-08-27 13:45:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:45:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:45:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-27 13:45:09,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154320987654321 [2023-08-27 13:45:09,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-27 13:45:09,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-27 13:45:09,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:45:09,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-27 13:45:09,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:09,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:09,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:09,723 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 281 flow. Second operand 3 states and 673 transitions. [2023-08-27 13:45:09,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 403 flow [2023-08-27 13:45:09,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 397 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 13:45:09,730 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 277 flow [2023-08-27 13:45:09,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2023-08-27 13:45:09,731 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-27 13:45:09,732 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 277 flow [2023-08-27 13:45:09,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:09,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:45:09,732 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 13:45:09,745 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 13:45:09,937 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,SelfDestructingSolverStorable5 [2023-08-27 13:45:09,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:45:09,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:45:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash -205694691, now seen corresponding path program 1 times [2023-08-27 13:45:09,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:45:09,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957600806] [2023-08-27 13:45:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:09,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:45:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:10,029 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 13:45:10,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:45:10,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957600806] [2023-08-27 13:45:10,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957600806] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:45:10,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536093536] [2023-08-27 13:45:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:10,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:45:10,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:45:10,031 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 13:45:10,054 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 13:45:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:10,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 13:45:10,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:45:10,208 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 13:45:10,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:45:10,253 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 13:45:10,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536093536] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:45:10,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:45:10,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 13:45:10,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555355014] [2023-08-27 13:45:10,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:45:10,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 13:45:10,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:45:10,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 13:45:10,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 13:45:10,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 540 [2023-08-27 13:45:10,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 277 flow. Second operand has 13 states, 13 states have (on average 207.15384615384616) internal successors, (2693), 13 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:10,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:45:10,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 540 [2023-08-27 13:45:10,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:45:15,584 INFO L124 PetriNetUnfolderBase]: 48945/62216 cut-off events. [2023-08-27 13:45:15,584 INFO L125 PetriNetUnfolderBase]: For 8332/8332 co-relation queries the response was YES. [2023-08-27 13:45:15,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143162 conditions, 62216 events. 48945/62216 cut-off events. For 8332/8332 co-relation queries the response was YES. Maximal size of possible extension queue 5497. Compared 373818 event pairs, 35293 based on Foata normal form. 12/23972 useless extension candidates. Maximal degree in co-relation 142935. Up to 60955 conditions per place. [2023-08-27 13:45:15,924 INFO L140 encePairwiseOnDemand]: 534/540 looper letters, 49 selfloop transitions, 41 changer transitions 0/96 dead transitions. [2023-08-27 13:45:15,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 607 flow [2023-08-27 13:45:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 13:45:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 13:45:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2566 transitions. [2023-08-27 13:45:15,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39598765432098765 [2023-08-27 13:45:15,930 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2566 transitions. [2023-08-27 13:45:15,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2566 transitions. [2023-08-27 13:45:15,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:45:15,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2566 transitions. [2023-08-27 13:45:15,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 213.83333333333334) internal successors, (2566), 12 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:15,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 540.0) internal successors, (7020), 13 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:15,946 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 540.0) internal successors, (7020), 13 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:15,946 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 277 flow. Second operand 12 states and 2566 transitions. [2023-08-27 13:45:15,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 607 flow [2023-08-27 13:45:15,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 96 transitions, 583 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:45:15,957 INFO L231 Difference]: Finished difference. Result has 84 places, 96 transitions, 539 flow [2023-08-27 13:45:15,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=539, PETRI_PLACES=84, PETRI_TRANSITIONS=96} [2023-08-27 13:45:15,958 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2023-08-27 13:45:15,958 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 96 transitions, 539 flow [2023-08-27 13:45:15,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 207.15384615384616) internal successors, (2693), 13 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:15,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:45:15,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:45:15,967 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 13:45:16,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:45:16,168 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:45:16,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:45:16,168 INFO L85 PathProgramCache]: Analyzing trace with hash -838044205, now seen corresponding path program 1 times [2023-08-27 13:45:16,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:45:16,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80122977] [2023-08-27 13:45:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:16,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:45:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:16,256 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 13:45:16,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:45:16,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80122977] [2023-08-27 13:45:16,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80122977] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:45:16,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940358238] [2023-08-27 13:45:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:16,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:45:16,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:45:16,259 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 13:45:16,262 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 13:45:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:16,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 13:45:16,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:45:16,447 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 13:45:16,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:45:16,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940358238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:45:16,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:45:16,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 13:45:16,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696578181] [2023-08-27 13:45:16,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:45:16,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:45:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:45:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:45:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:45:16,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 540 [2023-08-27 13:45:16,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 96 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:16,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:45:16,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 540 [2023-08-27 13:45:16,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:45:20,427 INFO L124 PetriNetUnfolderBase]: 34885/44467 cut-off events. [2023-08-27 13:45:20,428 INFO L125 PetriNetUnfolderBase]: For 7224/7224 co-relation queries the response was YES. [2023-08-27 13:45:20,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101747 conditions, 44467 events. 34885/44467 cut-off events. For 7224/7224 co-relation queries the response was YES. Maximal size of possible extension queue 3719. Compared 258929 event pairs, 24736 based on Foata normal form. 2049/19007 useless extension candidates. Maximal degree in co-relation 101625. Up to 43639 conditions per place. [2023-08-27 13:45:20,747 INFO L140 encePairwiseOnDemand]: 537/540 looper letters, 87 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-27 13:45:20,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 94 transitions, 707 flow [2023-08-27 13:45:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:45:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:45:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-27 13:45:20,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2023-08-27 13:45:20,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-27 13:45:20,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-27 13:45:20,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:45:20,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-27 13:45:20,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:20,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:20,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:20,753 INFO L175 Difference]: Start difference. First operand has 84 places, 96 transitions, 539 flow. Second operand 3 states and 705 transitions. [2023-08-27 13:45:20,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 94 transitions, 707 flow [2023-08-27 13:45:20,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 94 transitions, 583 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-27 13:45:20,761 INFO L231 Difference]: Finished difference. Result has 79 places, 94 transitions, 409 flow [2023-08-27 13:45:20,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=409, PETRI_PLACES=79, PETRI_TRANSITIONS=94} [2023-08-27 13:45:20,761 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-08-27 13:45:20,762 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 94 transitions, 409 flow [2023-08-27 13:45:20,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:20,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:45:20,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:45:20,772 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 13:45:20,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:45:20,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:45:20,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:45:20,970 INFO L85 PathProgramCache]: Analyzing trace with hash -838044204, now seen corresponding path program 1 times [2023-08-27 13:45:20,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:45:20,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278042832] [2023-08-27 13:45:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:20,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:45:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:21,019 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 13:45:21,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:45:21,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278042832] [2023-08-27 13:45:21,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278042832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:45:21,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:45:21,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:45:21,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711082807] [2023-08-27 13:45:21,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:45:21,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:45:21,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:45:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:45:21,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:45:21,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 540 [2023-08-27 13:45:21,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 94 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:21,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:45:21,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 540 [2023-08-27 13:45:21,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:45:25,523 INFO L124 PetriNetUnfolderBase]: 42477/53818 cut-off events. [2023-08-27 13:45:25,524 INFO L125 PetriNetUnfolderBase]: For 4994/4994 co-relation queries the response was YES. [2023-08-27 13:45:25,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118490 conditions, 53818 events. 42477/53818 cut-off events. For 4994/4994 co-relation queries the response was YES. Maximal size of possible extension queue 4257. Compared 312106 event pairs, 30567 based on Foata normal form. 0/23860 useless extension candidates. Maximal degree in co-relation 118468. Up to 53526 conditions per place. [2023-08-27 13:45:25,876 INFO L140 encePairwiseOnDemand]: 538/540 looper letters, 88 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2023-08-27 13:45:25,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 92 transitions, 577 flow [2023-08-27 13:45:25,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:45:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:45:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 700 transitions. [2023-08-27 13:45:25,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2023-08-27 13:45:25,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 700 transitions. [2023-08-27 13:45:25,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 700 transitions. [2023-08-27 13:45:25,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:45:25,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 700 transitions. [2023-08-27 13:45:25,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:25,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:25,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:25,883 INFO L175 Difference]: Start difference. First operand has 79 places, 94 transitions, 409 flow. Second operand 3 states and 700 transitions. [2023-08-27 13:45:25,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 92 transitions, 577 flow [2023-08-27 13:45:25,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:45:25,896 INFO L231 Difference]: Finished difference. Result has 79 places, 92 transitions, 400 flow [2023-08-27 13:45:25,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=79, PETRI_TRANSITIONS=92} [2023-08-27 13:45:25,897 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-08-27 13:45:25,897 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 92 transitions, 400 flow [2023-08-27 13:45:25,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:25,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:45:25,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:45:25,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 13:45:25,898 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:45:25,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:45:25,898 INFO L85 PathProgramCache]: Analyzing trace with hash -209563451, now seen corresponding path program 1 times [2023-08-27 13:45:25,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:45:25,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733452549] [2023-08-27 13:45:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:25,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:45:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:25,976 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 13:45:25,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:45:25,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733452549] [2023-08-27 13:45:25,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733452549] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:45:25,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888103948] [2023-08-27 13:45:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:25,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:45:25,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:45:25,981 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 13:45:25,984 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 13:45:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:26,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 13:45:26,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:45:26,208 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 13:45:26,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:45:26,259 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 13:45:26,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888103948] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:45:26,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:45:26,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 9 [2023-08-27 13:45:26,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676886643] [2023-08-27 13:45:26,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:45:26,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 13:45:26,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:45:26,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 13:45:26,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-27 13:45:26,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 540 [2023-08-27 13:45:26,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 92 transitions, 400 flow. Second operand has 11 states, 11 states have (on average 188.9090909090909) internal successors, (2078), 11 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:26,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:45:26,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 540 [2023-08-27 13:45:26,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:45:36,471 INFO L124 PetriNetUnfolderBase]: 92275/116499 cut-off events. [2023-08-27 13:45:36,471 INFO L125 PetriNetUnfolderBase]: For 9494/9494 co-relation queries the response was YES. [2023-08-27 13:45:36,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256613 conditions, 116499 events. 92275/116499 cut-off events. For 9494/9494 co-relation queries the response was YES. Maximal size of possible extension queue 7634. Compared 726114 event pairs, 22717 based on Foata normal form. 2178/53522 useless extension candidates. Maximal degree in co-relation 256590. Up to 24067 conditions per place. [2023-08-27 13:45:37,263 INFO L140 encePairwiseOnDemand]: 527/540 looper letters, 287 selfloop transitions, 18 changer transitions 0/308 dead transitions. [2023-08-27 13:45:37,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 308 transitions, 1643 flow [2023-08-27 13:45:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 13:45:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 13:45:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2497 transitions. [2023-08-27 13:45:37,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3853395061728395 [2023-08-27 13:45:37,269 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2497 transitions. [2023-08-27 13:45:37,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2497 transitions. [2023-08-27 13:45:37,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:45:37,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2497 transitions. [2023-08-27 13:45:37,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 208.08333333333334) internal successors, (2497), 12 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:37,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 540.0) internal successors, (7020), 13 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:37,284 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 540.0) internal successors, (7020), 13 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:37,284 INFO L175 Difference]: Start difference. First operand has 79 places, 92 transitions, 400 flow. Second operand 12 states and 2497 transitions. [2023-08-27 13:45:37,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 308 transitions, 1643 flow [2023-08-27 13:45:37,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 308 transitions, 1642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:45:37,302 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 559 flow [2023-08-27 13:45:37,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=559, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2023-08-27 13:45:37,303 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 23 predicate places. [2023-08-27 13:45:37,303 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 559 flow [2023-08-27 13:45:37,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 188.9090909090909) internal successors, (2078), 11 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:37,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:45:37,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:45:37,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 13:45:37,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 13:45:37,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:45:37,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:45:37,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1821581731, now seen corresponding path program 1 times [2023-08-27 13:45:37,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:45:37,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521223591] [2023-08-27 13:45:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:37,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:45:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:37,568 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 13:45:37,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:45:37,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521223591] [2023-08-27 13:45:37,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521223591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:45:37,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:45:37,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:45:37,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760311650] [2023-08-27 13:45:37,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:45:37,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:45:37,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:45:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:45:37,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:45:37,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 540 [2023-08-27 13:45:37,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 559 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:37,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:45:37,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 540 [2023-08-27 13:45:37,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:45:44,583 INFO L124 PetriNetUnfolderBase]: 57493/73806 cut-off events. [2023-08-27 13:45:44,584 INFO L125 PetriNetUnfolderBase]: For 26284/26284 co-relation queries the response was YES. [2023-08-27 13:45:44,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186067 conditions, 73806 events. 57493/73806 cut-off events. For 26284/26284 co-relation queries the response was YES. Maximal size of possible extension queue 5066. Compared 459207 event pairs, 41357 based on Foata normal form. 0/30605 useless extension candidates. Maximal degree in co-relation 186037. Up to 72623 conditions per place. [2023-08-27 13:45:45,226 INFO L140 encePairwiseOnDemand]: 538/540 looper letters, 96 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2023-08-27 13:45:45,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 103 transitions, 751 flow [2023-08-27 13:45:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:45:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:45:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2023-08-27 13:45:45,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43148148148148147 [2023-08-27 13:45:45,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2023-08-27 13:45:45,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2023-08-27 13:45:45,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:45:45,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2023-08-27 13:45:45,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:45,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:45,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:45,232 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 559 flow. Second operand 3 states and 699 transitions. [2023-08-27 13:45:45,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 103 transitions, 751 flow [2023-08-27 13:45:45,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 103 transitions, 735 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 13:45:45,250 INFO L231 Difference]: Finished difference. Result has 93 places, 103 transitions, 543 flow [2023-08-27 13:45:45,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=543, PETRI_PLACES=93, PETRI_TRANSITIONS=103} [2023-08-27 13:45:45,251 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 21 predicate places. [2023-08-27 13:45:45,251 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 103 transitions, 543 flow [2023-08-27 13:45:45,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:45,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:45:45,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:45:45,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 13:45:45,251 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:45:45,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:45:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1821581727, now seen corresponding path program 1 times [2023-08-27 13:45:45,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:45:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293758247] [2023-08-27 13:45:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:45,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:45:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:45,331 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 13:45:45,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:45:45,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293758247] [2023-08-27 13:45:45,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293758247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:45:45,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:45:45,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:45:45,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169748925] [2023-08-27 13:45:45,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:45:45,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:45:45,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:45:45,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:45:45,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:45:45,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 540 [2023-08-27 13:45:45,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 103 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:45,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:45:45,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 540 [2023-08-27 13:45:45,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:45:55,952 INFO L124 PetriNetUnfolderBase]: 84970/112791 cut-off events. [2023-08-27 13:45:55,953 INFO L125 PetriNetUnfolderBase]: For 39189/39189 co-relation queries the response was YES. [2023-08-27 13:45:56,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291936 conditions, 112791 events. 84970/112791 cut-off events. For 39189/39189 co-relation queries the response was YES. Maximal size of possible extension queue 7781. Compared 818149 event pairs, 32824 based on Foata normal form. 0/58037 useless extension candidates. Maximal degree in co-relation 291907. Up to 63585 conditions per place. [2023-08-27 13:45:56,874 INFO L140 encePairwiseOnDemand]: 536/540 looper letters, 141 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2023-08-27 13:45:56,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 146 transitions, 994 flow [2023-08-27 13:45:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:45:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:45:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2023-08-27 13:45:56,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2023-08-27 13:45:56,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2023-08-27 13:45:56,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2023-08-27 13:45:56,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:45:56,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2023-08-27 13:45:56,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:56,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:56,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:56,880 INFO L175 Difference]: Start difference. First operand has 93 places, 103 transitions, 543 flow. Second operand 3 states and 735 transitions. [2023-08-27 13:45:56,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 146 transitions, 994 flow [2023-08-27 13:45:56,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 146 transitions, 993 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:45:56,915 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 556 flow [2023-08-27 13:45:56,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=556, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2023-08-27 13:45:56,915 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 23 predicate places. [2023-08-27 13:45:56,916 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 556 flow [2023-08-27 13:45:56,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:56,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:45:56,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:45:56,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 13:45:56,916 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:45:56,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:45:56,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1821581730, now seen corresponding path program 1 times [2023-08-27 13:45:56,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:45:56,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905996631] [2023-08-27 13:45:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:45:56,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:45:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:45:56,998 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 13:45:56,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:45:56,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905996631] [2023-08-27 13:45:56,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905996631] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:45:56,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:45:56,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 13:45:56,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129427282] [2023-08-27 13:45:56,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:45:56,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:45:57,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:45:57,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:45:57,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:45:57,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 540 [2023-08-27 13:45:57,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 556 flow. Second operand has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:45:57,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:45:57,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 540 [2023-08-27 13:45:57,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:46:06,480 INFO L124 PetriNetUnfolderBase]: 70895/96350 cut-off events. [2023-08-27 13:46:06,481 INFO L125 PetriNetUnfolderBase]: For 35408/35408 co-relation queries the response was YES. [2023-08-27 13:46:06,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259781 conditions, 96350 events. 70895/96350 cut-off events. For 35408/35408 co-relation queries the response was YES. Maximal size of possible extension queue 6890. Compared 715962 event pairs, 63596 based on Foata normal form. 666/52124 useless extension candidates. Maximal degree in co-relation 259750. Up to 89682 conditions per place. [2023-08-27 13:46:07,328 INFO L140 encePairwiseOnDemand]: 528/540 looper letters, 118 selfloop transitions, 15 changer transitions 0/139 dead transitions. [2023-08-27 13:46:07,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 139 transitions, 973 flow [2023-08-27 13:46:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 13:46:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 13:46:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 862 transitions. [2023-08-27 13:46:07,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3990740740740741 [2023-08-27 13:46:07,331 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 862 transitions. [2023-08-27 13:46:07,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 862 transitions. [2023-08-27 13:46:07,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:46:07,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 862 transitions. [2023-08-27 13:46:07,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:07,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 540.0) internal successors, (2700), 5 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:07,334 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 540.0) internal successors, (2700), 5 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:07,334 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 556 flow. Second operand 4 states and 862 transitions. [2023-08-27 13:46:07,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 139 transitions, 973 flow [2023-08-27 13:46:07,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 139 transitions, 971 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:46:07,368 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 604 flow [2023-08-27 13:46:07,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=604, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2023-08-27 13:46:07,369 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 26 predicate places. [2023-08-27 13:46:07,369 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 604 flow [2023-08-27 13:46:07,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:07,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:46:07,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:46:07,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 13:46:07,369 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:46:07,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:46:07,370 INFO L85 PathProgramCache]: Analyzing trace with hash 155940907, now seen corresponding path program 1 times [2023-08-27 13:46:07,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:46:07,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169393206] [2023-08-27 13:46:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:07,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:46:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:07,471 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 13:46:07,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:46:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169393206] [2023-08-27 13:46:07,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169393206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:46:07,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:46:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:46:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414260456] [2023-08-27 13:46:07,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:46:07,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:46:07,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:46:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:46:07,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:46:07,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 540 [2023-08-27 13:46:07,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 604 flow. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:07,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:46:07,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 540 [2023-08-27 13:46:07,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:46:15,719 INFO L124 PetriNetUnfolderBase]: 57737/78638 cut-off events. [2023-08-27 13:46:15,720 INFO L125 PetriNetUnfolderBase]: For 38321/38321 co-relation queries the response was YES. [2023-08-27 13:46:16,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231479 conditions, 78638 events. 57737/78638 cut-off events. For 38321/38321 co-relation queries the response was YES. Maximal size of possible extension queue 5593. Compared 575664 event pairs, 51500 based on Foata normal form. 0/48718 useless extension candidates. Maximal degree in co-relation 231447. Up to 77287 conditions per place. [2023-08-27 13:46:16,430 INFO L140 encePairwiseOnDemand]: 538/540 looper letters, 84 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2023-08-27 13:46:16,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 103 transitions, 794 flow [2023-08-27 13:46:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:46:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:46:16,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-08-27 13:46:16,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308641975308642 [2023-08-27 13:46:16,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-08-27 13:46:16,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-08-27 13:46:16,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:46:16,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-08-27 13:46:16,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:16,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:16,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:16,435 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 604 flow. Second operand 3 states and 698 transitions. [2023-08-27 13:46:16,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 103 transitions, 794 flow [2023-08-27 13:46:16,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 103 transitions, 763 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 13:46:16,468 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 595 flow [2023-08-27 13:46:16,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=595, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2023-08-27 13:46:16,468 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 25 predicate places. [2023-08-27 13:46:16,469 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 595 flow [2023-08-27 13:46:16,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:16,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:46:16,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:46:16,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 13:46:16,469 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:46:16,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:46:16,470 INFO L85 PathProgramCache]: Analyzing trace with hash 155940909, now seen corresponding path program 1 times [2023-08-27 13:46:16,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:46:16,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935029110] [2023-08-27 13:46:16,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:16,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:46:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:16,547 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 13:46:16,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:46:16,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935029110] [2023-08-27 13:46:16,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935029110] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:46:16,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392873082] [2023-08-27 13:46:16,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:16,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:46:16,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:46:16,549 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 13:46:16,556 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 13:46:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:16,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 13:46:16,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:46:16,731 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 13:46:16,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 13:46:16,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392873082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:46:16,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 13:46:16,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-27 13:46:16,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509416135] [2023-08-27 13:46:16,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:46:16,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:46:16,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:46:16,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:46:16,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:46:16,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 540 [2023-08-27 13:46:16,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 595 flow. Second operand has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:16,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:46:16,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 540 [2023-08-27 13:46:16,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:46:22,134 INFO L124 PetriNetUnfolderBase]: 39711/54504 cut-off events. [2023-08-27 13:46:22,134 INFO L125 PetriNetUnfolderBase]: For 28955/28955 co-relation queries the response was YES. [2023-08-27 13:46:22,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159474 conditions, 54504 events. 39711/54504 cut-off events. For 28955/28955 co-relation queries the response was YES. Maximal size of possible extension queue 3695. Compared 387928 event pairs, 34976 based on Foata normal form. 3762/37283 useless extension candidates. Maximal degree in co-relation 159443. Up to 53632 conditions per place. [2023-08-27 13:46:22,656 INFO L140 encePairwiseOnDemand]: 537/540 looper letters, 94 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2023-08-27 13:46:22,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 101 transitions, 777 flow [2023-08-27 13:46:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:46:22,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:46:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 700 transitions. [2023-08-27 13:46:22,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2023-08-27 13:46:22,658 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 700 transitions. [2023-08-27 13:46:22,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 700 transitions. [2023-08-27 13:46:22,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:46:22,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 700 transitions. [2023-08-27 13:46:22,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:22,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:22,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:22,661 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 595 flow. Second operand 3 states and 700 transitions. [2023-08-27 13:46:22,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 101 transitions, 777 flow [2023-08-27 13:46:22,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 101 transitions, 764 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:46:22,689 INFO L231 Difference]: Finished difference. Result has 96 places, 101 transitions, 576 flow [2023-08-27 13:46:22,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=96, PETRI_TRANSITIONS=101} [2023-08-27 13:46:22,690 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 24 predicate places. [2023-08-27 13:46:22,690 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 101 transitions, 576 flow [2023-08-27 13:46:22,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:22,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:46:22,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:46:22,697 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 13:46:22,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 13:46:22,897 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:46:22,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:46:22,897 INFO L85 PathProgramCache]: Analyzing trace with hash 539203053, now seen corresponding path program 1 times [2023-08-27 13:46:22,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:46:22,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839948987] [2023-08-27 13:46:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:22,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:46:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 13:46:22,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:46:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839948987] [2023-08-27 13:46:22,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839948987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:46:22,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:46:22,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:46:22,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029422827] [2023-08-27 13:46:22,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:46:22,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:46:22,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:46:22,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:46:22,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:46:22,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 540 [2023-08-27 13:46:22,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 101 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:22,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:46:22,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 540 [2023-08-27 13:46:22,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:46:29,193 INFO L124 PetriNetUnfolderBase]: 50032/67465 cut-off events. [2023-08-27 13:46:29,193 INFO L125 PetriNetUnfolderBase]: For 30460/30460 co-relation queries the response was YES. [2023-08-27 13:46:29,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192619 conditions, 67465 events. 50032/67465 cut-off events. For 30460/30460 co-relation queries the response was YES. Maximal size of possible extension queue 4168. Compared 461137 event pairs, 43183 based on Foata normal form. 0/47198 useless extension candidates. Maximal degree in co-relation 192587. Up to 67387 conditions per place. [2023-08-27 13:46:29,757 INFO L140 encePairwiseOnDemand]: 538/540 looper letters, 96 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2023-08-27 13:46:29,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 100 transitions, 766 flow [2023-08-27 13:46:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:46:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:46:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2023-08-27 13:46:29,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42901234567901236 [2023-08-27 13:46:29,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2023-08-27 13:46:29,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2023-08-27 13:46:29,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:46:29,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2023-08-27 13:46:29,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:29,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:29,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:29,762 INFO L175 Difference]: Start difference. First operand has 96 places, 101 transitions, 576 flow. Second operand 3 states and 695 transitions. [2023-08-27 13:46:29,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 100 transitions, 766 flow [2023-08-27 13:46:29,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 765 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:46:29,796 INFO L231 Difference]: Finished difference. Result has 96 places, 100 transitions, 573 flow [2023-08-27 13:46:29,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=573, PETRI_PLACES=96, PETRI_TRANSITIONS=100} [2023-08-27 13:46:29,797 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 24 predicate places. [2023-08-27 13:46:29,797 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 100 transitions, 573 flow [2023-08-27 13:46:29,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:29,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:46:29,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:46:29,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 13:46:29,797 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 13:46:29,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:46:29,798 INFO L85 PathProgramCache]: Analyzing trace with hash 539203054, now seen corresponding path program 1 times [2023-08-27 13:46:29,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:46:29,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518206993] [2023-08-27 13:46:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:29,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:46:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:29,860 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 13:46:29,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:46:29,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518206993] [2023-08-27 13:46:29,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518206993] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:46:29,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842206693] [2023-08-27 13:46:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:46:29,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:46:29,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:46:29,865 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 13:46:29,868 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 13:46:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:46:30,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 13:46:30,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:46:30,108 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 13:46:30,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:46:30,155 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 13:46:30,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842206693] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:46:30,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:46:30,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 10 [2023-08-27 13:46:30,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410378879] [2023-08-27 13:46:30,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:46:30,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 13:46:30,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:46:30,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 13:46:30,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-27 13:46:30,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 540 [2023-08-27 13:46:30,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 100 transitions, 573 flow. Second operand has 11 states, 11 states have (on average 189.27272727272728) internal successors, (2082), 11 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:46:30,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:46:30,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 540 [2023-08-27 13:46:30,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand