/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 INSUFFICIENT_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-commit-2.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 07:12:37,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 07:12:37,434 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 07:12:37,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 07:12:37,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 07:12:37,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 07:12:37,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 07:12:37,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 07:12:37,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 07:12:37,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 07:12:37,477 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 07:12:37,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 07:12:37,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 07:12:37,479 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 07:12:37,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 07:12:37,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 07:12:37,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 07:12:37,479 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 07:12:37,480 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 07:12:37,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 07:12:37,480 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 07:12:37,481 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 07:12:37,481 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 07:12:37,482 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 07:12:37,482 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 07:12:37,482 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 07:12:37,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 07:12:37,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:12:37,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 07:12:37,483 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 07:12:37,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 07:12:37,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 07:12:37,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 07:12:37,485 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 07:12:37,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 07:12:37,485 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 07:12:37,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 07:12:37,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 07:12:37,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 07:12:37,824 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 07:12:37,825 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 07:12:37,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-08-27 07:12:38,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 07:12:39,242 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 07:12:39,242 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2023-08-27 07:12:39,250 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaeaf848f/20630bc7482e45fa9b2490f1e5f0dcd7/FLAGa9e100275 [2023-08-27 07:12:39,266 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaeaf848f/20630bc7482e45fa9b2490f1e5f0dcd7 [2023-08-27 07:12:39,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 07:12:39,270 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 07:12:39,271 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 07:12:39,271 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 07:12:39,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 07:12:39,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d8c2898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39, skipping insertion in model container [2023-08-27 07:12:39,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,300 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 07:12:39,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:12:39,536 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 07:12:39,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:12:39,605 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:12:39,606 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:12:39,612 INFO L206 MainTranslator]: Completed translation [2023-08-27 07:12:39,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39 WrapperNode [2023-08-27 07:12:39,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 07:12:39,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 07:12:39,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 07:12:39,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 07:12:39,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,683 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 516 [2023-08-27 07:12:39,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 07:12:39,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 07:12:39,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 07:12:39,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 07:12:39,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,727 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 07:12:39,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 07:12:39,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 07:12:39,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 07:12:39,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (1/1) ... [2023-08-27 07:12:39,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:12:39,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:39,782 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 07:12:39,803 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 07:12:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 07:12:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 07:12:39,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 07:12:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 07:12:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 07:12:39,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 07:12:39,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 07:12:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 07:12:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 07:12:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 07:12:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 07:12:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 07:12:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 07:12:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 07:12:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 07:12:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 07:12:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 07:12:39,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 07:12:39,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 07:12:39,825 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 07:12:39,945 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 07:12:39,946 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 07:12:40,563 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 07:12:40,761 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 07:12:40,761 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-27 07:12:40,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:12:40 BoogieIcfgContainer [2023-08-27 07:12:40,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 07:12:40,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 07:12:40,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 07:12:40,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 07:12:40,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:12:39" (1/3) ... [2023-08-27 07:12:40,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da28da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:12:40, skipping insertion in model container [2023-08-27 07:12:40,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:12:39" (2/3) ... [2023-08-27 07:12:40,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da28da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:12:40, skipping insertion in model container [2023-08-27 07:12:40,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:12:40" (3/3) ... [2023-08-27 07:12:40,770 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2023-08-27 07:12:40,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 07:12:40,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-08-27 07:12:40,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 07:12:40,888 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 07:12:40,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 394 transitions, 820 flow [2023-08-27 07:12:41,098 INFO L124 PetriNetUnfolderBase]: 37/390 cut-off events. [2023-08-27 07:12:41,098 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 07:12:41,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 390 events. 37/390 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 421 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 342. Up to 8 conditions per place. [2023-08-27 07:12:41,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 394 transitions, 820 flow [2023-08-27 07:12:41,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 353 places, 377 transitions, 778 flow [2023-08-27 07:12:41,122 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 07:12:41,134 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 353 places, 377 transitions, 778 flow [2023-08-27 07:12:41,136 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 353 places, 377 transitions, 778 flow [2023-08-27 07:12:41,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 377 transitions, 778 flow [2023-08-27 07:12:41,211 INFO L124 PetriNetUnfolderBase]: 37/377 cut-off events. [2023-08-27 07:12:41,212 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 07:12:41,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 377 events. 37/377 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 419 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 342. Up to 8 conditions per place. [2023-08-27 07:12:41,222 INFO L119 LiptonReduction]: Number of co-enabled transitions 9264 [2023-08-27 07:12:56,658 INFO L134 LiptonReduction]: Checked pairs total: 11507 [2023-08-27 07:12:56,659 INFO L136 LiptonReduction]: Total number of compositions: 455 [2023-08-27 07:12:56,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 07:12:56,676 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;@426ab5d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 07:12:56,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-27 07:12:56,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 07:12:56,679 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 07:12:56,679 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:12:56,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:56,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 07:12:56,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:12:56,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:56,684 INFO L85 PathProgramCache]: Analyzing trace with hash 65068, now seen corresponding path program 1 times [2023-08-27 07:12:56,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:56,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500107675] [2023-08-27 07:12:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:56,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:56,983 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 07:12:56,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:56,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500107675] [2023-08-27 07:12:56,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500107675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:12:56,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:12:56,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:12:56,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623177503] [2023-08-27 07:12:56,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:12:56,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:12:56,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:57,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:12:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:12:57,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 849 [2023-08-27 07:12:57,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:57,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:57,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 849 [2023-08-27 07:12:57,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:58,382 INFO L124 PetriNetUnfolderBase]: 4961/6508 cut-off events. [2023-08-27 07:12:58,382 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2023-08-27 07:12:58,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13445 conditions, 6508 events. 4961/6508 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26234 event pairs, 3757 based on Foata normal form. 0/2224 useless extension candidates. Maximal degree in co-relation 12048. Up to 6502 conditions per place. [2023-08-27 07:12:58,422 INFO L140 encePairwiseOnDemand]: 820/849 looper letters, 52 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2023-08-27 07:12:58,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 268 flow [2023-08-27 07:12:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:12:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:12:58,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 981 transitions. [2023-08-27 07:12:58,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38515901060070673 [2023-08-27 07:12:58,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 981 transitions. [2023-08-27 07:12:58,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 981 transitions. [2023-08-27 07:12:58,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:58,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 981 transitions. [2023-08-27 07:12:58,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:58,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:58,465 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:58,466 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 154 flow. Second operand 3 states and 981 transitions. [2023-08-27 07:12:58,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 268 flow [2023-08-27 07:12:58,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 252 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 07:12:58,482 INFO L231 Difference]: Finished difference. Result has 54 places, 61 transitions, 198 flow [2023-08-27 07:12:58,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=54, PETRI_TRANSITIONS=61} [2023-08-27 07:12:58,487 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -16 predicate places. [2023-08-27 07:12:58,487 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 61 transitions, 198 flow [2023-08-27 07:12:58,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.6666666666667) internal successors, (902), 3 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:58,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:58,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:12:58,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 07:12:58,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:12:58,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:58,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2020021, now seen corresponding path program 1 times [2023-08-27 07:12:58,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:58,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474005441] [2023-08-27 07:12:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:58,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:58,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:58,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474005441] [2023-08-27 07:12:58,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474005441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:12:58,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:12:58,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:12:58,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514570780] [2023-08-27 07:12:58,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:12:58,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:12:58,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:12:58,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:12:58,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:12:58,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 849 [2023-08-27 07:12:58,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 61 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 301.0) internal successors, (903), 3 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:58,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:12:58,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 849 [2023-08-27 07:12:58,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:12:59,689 INFO L124 PetriNetUnfolderBase]: 4961/6504 cut-off events. [2023-08-27 07:12:59,689 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 07:12:59,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13211 conditions, 6504 events. 4961/6504 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26145 event pairs, 3757 based on Foata normal form. 0/2230 useless extension candidates. Maximal degree in co-relation 13135. Up to 6486 conditions per place. [2023-08-27 07:12:59,731 INFO L140 encePairwiseOnDemand]: 843/849 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-27 07:12:59,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 296 flow [2023-08-27 07:12:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:12:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:12:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2023-08-27 07:12:59,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37416568511974874 [2023-08-27 07:12:59,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 953 transitions. [2023-08-27 07:12:59,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 953 transitions. [2023-08-27 07:12:59,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:12:59,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 953 transitions. [2023-08-27 07:12:59,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:59,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:59,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:59,746 INFO L175 Difference]: Start difference. First operand has 54 places, 61 transitions, 198 flow. Second operand 3 states and 953 transitions. [2023-08-27 07:12:59,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 296 flow [2023-08-27 07:12:59,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:12:59,751 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 170 flow [2023-08-27 07:12:59,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2023-08-27 07:12:59,754 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -20 predicate places. [2023-08-27 07:12:59,755 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 170 flow [2023-08-27 07:12:59,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.0) internal successors, (903), 3 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:12:59,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:12:59,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:12:59,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 07:12:59,762 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:12:59,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:12:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2020052, now seen corresponding path program 1 times [2023-08-27 07:12:59,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:12:59,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802392306] [2023-08-27 07:12:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:59,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:12:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:12:59,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:12:59,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802392306] [2023-08-27 07:12:59,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802392306] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:12:59,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644755902] [2023-08-27 07:12:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:12:59,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:12:59,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:12:59,873 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 07:12:59,877 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 07:12:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:12:59,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:12:59,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:00,020 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 07:13:00,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:00,035 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 07:13:00,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644755902] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:00,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:00,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 07:13:00,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530763039] [2023-08-27 07:13:00,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:00,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:13:00,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:00,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:13:00,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:13:00,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 849 [2023-08-27 07:13:00,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 301.14285714285717) internal successors, (2108), 7 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:00,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:00,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 849 [2023-08-27 07:13:00,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:01,132 INFO L124 PetriNetUnfolderBase]: 4973/6528 cut-off events. [2023-08-27 07:13:01,132 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 07:13:01,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13280 conditions, 6528 events. 4973/6528 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26219 event pairs, 3757 based on Foata normal form. 0/2241 useless extension candidates. Maximal degree in co-relation 13135. Up to 6501 conditions per place. [2023-08-27 07:13:01,167 INFO L140 encePairwiseOnDemand]: 836/849 looper letters, 48 selfloop transitions, 33 changer transitions 0/81 dead transitions. [2023-08-27 07:13:01,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 434 flow [2023-08-27 07:13:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:13:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:13:01,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1893 transitions. [2023-08-27 07:13:01,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37161366313309774 [2023-08-27 07:13:01,173 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1893 transitions. [2023-08-27 07:13:01,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1893 transitions. [2023-08-27 07:13:01,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:01,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1893 transitions. [2023-08-27 07:13:01,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:01,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:01,187 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:01,188 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 170 flow. Second operand 6 states and 1893 transitions. [2023-08-27 07:13:01,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 434 flow [2023-08-27 07:13:01,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:13:01,190 INFO L231 Difference]: Finished difference. Result has 56 places, 81 transitions, 396 flow [2023-08-27 07:13:01,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=56, PETRI_TRANSITIONS=81} [2023-08-27 07:13:01,191 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2023-08-27 07:13:01,191 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 81 transitions, 396 flow [2023-08-27 07:13:01,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 301.14285714285717) internal successors, (2108), 7 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:01,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:01,193 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 07:13:01,203 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 07:13:01,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:01,399 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:01,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:01,399 INFO L85 PathProgramCache]: Analyzing trace with hash 51796107, now seen corresponding path program 2 times [2023-08-27 07:13:01,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:01,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527179052] [2023-08-27 07:13:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:01,532 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 07:13:01,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:01,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527179052] [2023-08-27 07:13:01,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527179052] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:01,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133507309] [2023-08-27 07:13:01,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:13:01,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:01,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:01,535 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 07:13:01,538 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 07:13:01,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 07:13:01,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:01,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:13:01,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:01,656 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 07:13:01,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:13:01,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133507309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:01,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:13:01,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 07:13:01,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948489210] [2023-08-27 07:13:01,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:01,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:01,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:01,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 07:13:01,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 849 [2023-08-27 07:13:01,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 81 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:01,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:01,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 849 [2023-08-27 07:13:01,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:02,639 INFO L124 PetriNetUnfolderBase]: 4973/6524 cut-off events. [2023-08-27 07:13:02,639 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-27 07:13:02,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13327 conditions, 6524 events. 4973/6524 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26359 event pairs, 3757 based on Foata normal form. 4/2252 useless extension candidates. Maximal degree in co-relation 13228. Up to 6524 conditions per place. [2023-08-27 07:13:02,674 INFO L140 encePairwiseOnDemand]: 844/849 looper letters, 76 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-08-27 07:13:02,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 77 transitions, 510 flow [2023-08-27 07:13:02,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2023-08-27 07:13:02,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773066352571653 [2023-08-27 07:13:02,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2023-08-27 07:13:02,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2023-08-27 07:13:02,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:02,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2023-08-27 07:13:02,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:02,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:02,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:02,699 INFO L175 Difference]: Start difference. First operand has 56 places, 81 transitions, 396 flow. Second operand 3 states and 961 transitions. [2023-08-27 07:13:02,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 77 transitions, 510 flow [2023-08-27 07:13:02,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 398 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-08-27 07:13:02,707 INFO L231 Difference]: Finished difference. Result has 49 places, 77 transitions, 246 flow [2023-08-27 07:13:02,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=49, PETRI_TRANSITIONS=77} [2023-08-27 07:13:02,710 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -21 predicate places. [2023-08-27 07:13:02,710 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 77 transitions, 246 flow [2023-08-27 07:13:02,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:02,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:02,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:02,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:02,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-27 07:13:02,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:02,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1003953431, now seen corresponding path program 1 times [2023-08-27 07:13:02,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:02,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969305466] [2023-08-27 07:13:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:02,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:02,995 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 07:13:02,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969305466] [2023-08-27 07:13:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969305466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:02,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:13:02,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141417406] [2023-08-27 07:13:02,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:02,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:02,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:02,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:02,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:13:02,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 849 [2023-08-27 07:13:02,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 77 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:02,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:02,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 849 [2023-08-27 07:13:02,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:04,330 INFO L124 PetriNetUnfolderBase]: 6723/8784 cut-off events. [2023-08-27 07:13:04,330 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 07:13:04,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17825 conditions, 8784 events. 6723/8784 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 39806 event pairs, 1517 based on Foata normal form. 0/3130 useless extension candidates. Maximal degree in co-relation 17817. Up to 5921 conditions per place. [2023-08-27 07:13:04,376 INFO L140 encePairwiseOnDemand]: 841/849 looper letters, 104 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2023-08-27 07:13:04,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 107 transitions, 527 flow [2023-08-27 07:13:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1037 transitions. [2023-08-27 07:13:04,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4071456615626227 [2023-08-27 07:13:04,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1037 transitions. [2023-08-27 07:13:04,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1037 transitions. [2023-08-27 07:13:04,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:04,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1037 transitions. [2023-08-27 07:13:04,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:04,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:04,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:04,390 INFO L175 Difference]: Start difference. First operand has 49 places, 77 transitions, 246 flow. Second operand 3 states and 1037 transitions. [2023-08-27 07:13:04,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 107 transitions, 527 flow [2023-08-27 07:13:04,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 107 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:13:04,393 INFO L231 Difference]: Finished difference. Result has 52 places, 79 transitions, 275 flow [2023-08-27 07:13:04,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=52, PETRI_TRANSITIONS=79} [2023-08-27 07:13:04,394 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -18 predicate places. [2023-08-27 07:13:04,394 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 79 transitions, 275 flow [2023-08-27 07:13:04,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:04,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:04,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:04,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 07:13:04,395 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:04,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:04,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1057780715, now seen corresponding path program 1 times [2023-08-27 07:13:04,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:04,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410506342] [2023-08-27 07:13:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:04,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:04,620 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 07:13:04,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:04,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410506342] [2023-08-27 07:13:04,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410506342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:04,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872654039] [2023-08-27 07:13:04,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:04,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:04,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:04,625 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 07:13:04,651 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 07:13:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:04,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:13:04,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:04,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:13:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872654039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:04,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:13:04,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-27 07:13:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395568647] [2023-08-27 07:13:04,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:04,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:04,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:04,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:04,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:13:04,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 849 [2023-08-27 07:13:04,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 79 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:04,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:04,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 849 [2023-08-27 07:13:04,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:06,202 INFO L124 PetriNetUnfolderBase]: 8111/10662 cut-off events. [2023-08-27 07:13:06,203 INFO L125 PetriNetUnfolderBase]: For 2013/2013 co-relation queries the response was YES. [2023-08-27 07:13:06,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23464 conditions, 10662 events. 8111/10662 cut-off events. For 2013/2013 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 50249 event pairs, 2173 based on Foata normal form. 340/5012 useless extension candidates. Maximal degree in co-relation 23453. Up to 9043 conditions per place. [2023-08-27 07:13:06,256 INFO L140 encePairwiseOnDemand]: 843/849 looper letters, 101 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2023-08-27 07:13:06,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 105 transitions, 543 flow [2023-08-27 07:13:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2023-08-27 07:13:06,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39968590498625833 [2023-08-27 07:13:06,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1018 transitions. [2023-08-27 07:13:06,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1018 transitions. [2023-08-27 07:13:06,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:06,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1018 transitions. [2023-08-27 07:13:06,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.3333333333333) internal successors, (1018), 3 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:06,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:06,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:06,269 INFO L175 Difference]: Start difference. First operand has 52 places, 79 transitions, 275 flow. Second operand 3 states and 1018 transitions. [2023-08-27 07:13:06,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 105 transitions, 543 flow [2023-08-27 07:13:06,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 105 transitions, 537 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:13:06,276 INFO L231 Difference]: Finished difference. Result has 53 places, 82 transitions, 297 flow [2023-08-27 07:13:06,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=53, PETRI_TRANSITIONS=82} [2023-08-27 07:13:06,277 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -17 predicate places. [2023-08-27 07:13:06,277 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 82 transitions, 297 flow [2023-08-27 07:13:06,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:06,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:06,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:06,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:06,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:06,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:06,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:06,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1568392373, now seen corresponding path program 1 times [2023-08-27 07:13:06,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:06,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409550045] [2023-08-27 07:13:06,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:06,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:06,572 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 07:13:06,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:06,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409550045] [2023-08-27 07:13:06,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409550045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:06,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:06,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:13:06,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871434076] [2023-08-27 07:13:06,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:06,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:06,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:06,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:06,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:13:06,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 849 [2023-08-27 07:13:06,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 82 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:06,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:06,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 849 [2023-08-27 07:13:06,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:08,402 INFO L124 PetriNetUnfolderBase]: 11569/15016 cut-off events. [2023-08-27 07:13:08,403 INFO L125 PetriNetUnfolderBase]: For 3168/3168 co-relation queries the response was YES. [2023-08-27 07:13:08,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35995 conditions, 15016 events. 11569/15016 cut-off events. For 3168/3168 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 69327 event pairs, 4801 based on Foata normal form. 0/8676 useless extension candidates. Maximal degree in co-relation 35983. Up to 7854 conditions per place. [2023-08-27 07:13:08,481 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 112 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2023-08-27 07:13:08,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 116 transitions, 631 flow [2023-08-27 07:13:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1059 transitions. [2023-08-27 07:13:08,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578327444051827 [2023-08-27 07:13:08,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1059 transitions. [2023-08-27 07:13:08,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1059 transitions. [2023-08-27 07:13:08,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:08,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1059 transitions. [2023-08-27 07:13:08,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:08,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:08,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:08,492 INFO L175 Difference]: Start difference. First operand has 53 places, 82 transitions, 297 flow. Second operand 3 states and 1059 transitions. [2023-08-27 07:13:08,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 116 transitions, 631 flow [2023-08-27 07:13:08,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 116 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:13:08,495 INFO L231 Difference]: Finished difference. Result has 56 places, 84 transitions, 321 flow [2023-08-27 07:13:08,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=56, PETRI_TRANSITIONS=84} [2023-08-27 07:13:08,496 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2023-08-27 07:13:08,496 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 84 transitions, 321 flow [2023-08-27 07:13:08,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:08,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:08,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:08,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 07:13:08,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:08,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:08,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1568392374, now seen corresponding path program 1 times [2023-08-27 07:13:08,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:08,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773977990] [2023-08-27 07:13:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:08,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:08,614 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 07:13:08,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773977990] [2023-08-27 07:13:08,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773977990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:08,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:08,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:13:08,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111134619] [2023-08-27 07:13:08,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:08,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:08,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:08,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:13:08,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 849 [2023-08-27 07:13:08,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 84 transitions, 321 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:08,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:08,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 849 [2023-08-27 07:13:08,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:10,620 INFO L124 PetriNetUnfolderBase]: 11191/14612 cut-off events. [2023-08-27 07:13:10,621 INFO L125 PetriNetUnfolderBase]: For 9856/9856 co-relation queries the response was YES. [2023-08-27 07:13:10,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38183 conditions, 14612 events. 11191/14612 cut-off events. For 9856/9856 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 69602 event pairs, 2809 based on Foata normal form. 426/10316 useless extension candidates. Maximal degree in co-relation 38168. Up to 10195 conditions per place. [2023-08-27 07:13:10,686 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 108 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2023-08-27 07:13:10,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 110 transitions, 615 flow [2023-08-27 07:13:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1048 transitions. [2023-08-27 07:13:10,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114644680015705 [2023-08-27 07:13:10,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1048 transitions. [2023-08-27 07:13:10,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1048 transitions. [2023-08-27 07:13:10,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:10,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1048 transitions. [2023-08-27 07:13:10,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 349.3333333333333) internal successors, (1048), 3 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:10,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:10,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:10,697 INFO L175 Difference]: Start difference. First operand has 56 places, 84 transitions, 321 flow. Second operand 3 states and 1048 transitions. [2023-08-27 07:13:10,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 110 transitions, 615 flow [2023-08-27 07:13:10,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 110 transitions, 605 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:13:10,703 INFO L231 Difference]: Finished difference. Result has 57 places, 84 transitions, 323 flow [2023-08-27 07:13:10,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=57, PETRI_TRANSITIONS=84} [2023-08-27 07:13:10,703 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-08-27 07:13:10,704 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 84 transitions, 323 flow [2023-08-27 07:13:10,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:10,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:10,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:10,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 07:13:10,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:10,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:10,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1375525184, now seen corresponding path program 1 times [2023-08-27 07:13:10,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:10,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879842895] [2023-08-27 07:13:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:10,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:10,865 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 07:13:10,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:10,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879842895] [2023-08-27 07:13:10,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879842895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:10,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:10,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:13:10,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614955666] [2023-08-27 07:13:10,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:10,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:13:10,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:10,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:13:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:13:10,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 849 [2023-08-27 07:13:10,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 84 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:10,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:10,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 849 [2023-08-27 07:13:10,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:12,495 INFO L124 PetriNetUnfolderBase]: 10007/13200 cut-off events. [2023-08-27 07:13:12,495 INFO L125 PetriNetUnfolderBase]: For 4958/4958 co-relation queries the response was YES. [2023-08-27 07:13:12,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33769 conditions, 13200 events. 10007/13200 cut-off events. For 4958/4958 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 62460 event pairs, 1571 based on Foata normal form. 268/8896 useless extension candidates. Maximal degree in co-relation 33753. Up to 6611 conditions per place. [2023-08-27 07:13:12,548 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 129 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2023-08-27 07:13:12,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 132 transitions, 711 flow [2023-08-27 07:13:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:13:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:13:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1375 transitions. [2023-08-27 07:13:12,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4048881036513545 [2023-08-27 07:13:12,552 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1375 transitions. [2023-08-27 07:13:12,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1375 transitions. [2023-08-27 07:13:12,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:12,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1375 transitions. [2023-08-27 07:13:12,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 343.75) internal successors, (1375), 4 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:12,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:12,562 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:12,562 INFO L175 Difference]: Start difference. First operand has 57 places, 84 transitions, 323 flow. Second operand 4 states and 1375 transitions. [2023-08-27 07:13:12,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 132 transitions, 711 flow [2023-08-27 07:13:12,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 132 transitions, 707 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 07:13:12,571 INFO L231 Difference]: Finished difference. Result has 59 places, 83 transitions, 319 flow [2023-08-27 07:13:12,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=319, PETRI_PLACES=59, PETRI_TRANSITIONS=83} [2023-08-27 07:13:12,572 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-08-27 07:13:12,572 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 83 transitions, 319 flow [2023-08-27 07:13:12,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:12,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:12,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:12,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 07:13:12,574 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:12,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:12,574 INFO L85 PathProgramCache]: Analyzing trace with hash -308457241, now seen corresponding path program 1 times [2023-08-27 07:13:12,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:12,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132465061] [2023-08-27 07:13:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:12,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:12,709 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 07:13:12,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:12,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132465061] [2023-08-27 07:13:12,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132465061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:12,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:12,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:13:12,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790498709] [2023-08-27 07:13:12,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:12,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:12,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:12,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:12,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:13:12,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 849 [2023-08-27 07:13:12,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 83 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:12,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:12,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 849 [2023-08-27 07:13:12,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:14,294 INFO L124 PetriNetUnfolderBase]: 9625/12670 cut-off events. [2023-08-27 07:13:14,294 INFO L125 PetriNetUnfolderBase]: For 5720/5720 co-relation queries the response was YES. [2023-08-27 07:13:14,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32548 conditions, 12670 events. 9625/12670 cut-off events. For 5720/5720 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 59513 event pairs, 3101 based on Foata normal form. 0/7958 useless extension candidates. Maximal degree in co-relation 32531. Up to 11041 conditions per place. [2023-08-27 07:13:14,349 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 101 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-27 07:13:14,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 574 flow [2023-08-27 07:13:14,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1043 transitions. [2023-08-27 07:13:14,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095013741656851 [2023-08-27 07:13:14,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1043 transitions. [2023-08-27 07:13:14,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1043 transitions. [2023-08-27 07:13:14,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:14,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1043 transitions. [2023-08-27 07:13:14,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:14,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:14,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:14,359 INFO L175 Difference]: Start difference. First operand has 59 places, 83 transitions, 319 flow. Second operand 3 states and 1043 transitions. [2023-08-27 07:13:14,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 574 flow [2023-08-27 07:13:14,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:13:14,363 INFO L231 Difference]: Finished difference. Result has 60 places, 83 transitions, 323 flow [2023-08-27 07:13:14,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=60, PETRI_TRANSITIONS=83} [2023-08-27 07:13:14,364 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2023-08-27 07:13:14,364 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 83 transitions, 323 flow [2023-08-27 07:13:14,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:14,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:14,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:14,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 07:13:14,365 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:14,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:14,365 INFO L85 PathProgramCache]: Analyzing trace with hash -308457255, now seen corresponding path program 1 times [2023-08-27 07:13:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:14,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387092706] [2023-08-27 07:13:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:14,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:14,411 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 07:13:14,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:14,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387092706] [2023-08-27 07:13:14,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387092706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:14,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:14,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:13:14,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891395754] [2023-08-27 07:13:14,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:14,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:14,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:14,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:14,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:13:14,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 849 [2023-08-27 07:13:14,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 83 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:14,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:14,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 849 [2023-08-27 07:13:14,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:16,514 INFO L124 PetriNetUnfolderBase]: 13953/18148 cut-off events. [2023-08-27 07:13:16,514 INFO L125 PetriNetUnfolderBase]: For 9069/9069 co-relation queries the response was YES. [2023-08-27 07:13:16,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47493 conditions, 18148 events. 13953/18148 cut-off events. For 9069/9069 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 88406 event pairs, 6375 based on Foata normal form. 0/12740 useless extension candidates. Maximal degree in co-relation 47475. Up to 9861 conditions per place. [2023-08-27 07:13:16,601 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 113 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-08-27 07:13:16,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 117 transitions, 681 flow [2023-08-27 07:13:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:16,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1057 transitions. [2023-08-27 07:13:16,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149980369061641 [2023-08-27 07:13:16,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1057 transitions. [2023-08-27 07:13:16,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1057 transitions. [2023-08-27 07:13:16,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:16,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1057 transitions. [2023-08-27 07:13:16,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.3333333333333) internal successors, (1057), 3 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:16,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:16,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:16,611 INFO L175 Difference]: Start difference. First operand has 60 places, 83 transitions, 323 flow. Second operand 3 states and 1057 transitions. [2023-08-27 07:13:16,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 117 transitions, 681 flow [2023-08-27 07:13:16,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 117 transitions, 675 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:13:16,615 INFO L231 Difference]: Finished difference. Result has 62 places, 85 transitions, 349 flow [2023-08-27 07:13:16,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=62, PETRI_TRANSITIONS=85} [2023-08-27 07:13:16,615 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -8 predicate places. [2023-08-27 07:13:16,615 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 85 transitions, 349 flow [2023-08-27 07:13:16,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:16,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:16,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:16,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 07:13:16,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:16,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:16,617 INFO L85 PathProgramCache]: Analyzing trace with hash -972237134, now seen corresponding path program 1 times [2023-08-27 07:13:16,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:16,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239728504] [2023-08-27 07:13:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:16,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:16,753 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 07:13:16,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:16,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239728504] [2023-08-27 07:13:16,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239728504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:16,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:16,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:13:16,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087378073] [2023-08-27 07:13:16,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:16,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:13:16,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:16,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:13:16,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:13:16,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 849 [2023-08-27 07:13:16,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 85 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:16,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:16,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 849 [2023-08-27 07:13:16,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:18,909 INFO L124 PetriNetUnfolderBase]: 11775/15260 cut-off events. [2023-08-27 07:13:18,909 INFO L125 PetriNetUnfolderBase]: For 11182/11182 co-relation queries the response was YES. [2023-08-27 07:13:18,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43201 conditions, 15260 events. 11775/15260 cut-off events. For 11182/11182 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 69996 event pairs, 1989 based on Foata normal form. 136/11216 useless extension candidates. Maximal degree in co-relation 43181. Up to 7421 conditions per place. [2023-08-27 07:13:19,000 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 124 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2023-08-27 07:13:19,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 128 transitions, 728 flow [2023-08-27 07:13:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:13:19,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:13:19,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1384 transitions. [2023-08-27 07:13:19,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075382803297998 [2023-08-27 07:13:19,003 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1384 transitions. [2023-08-27 07:13:19,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1384 transitions. [2023-08-27 07:13:19,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:19,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1384 transitions. [2023-08-27 07:13:19,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:19,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:19,011 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:19,011 INFO L175 Difference]: Start difference. First operand has 62 places, 85 transitions, 349 flow. Second operand 4 states and 1384 transitions. [2023-08-27 07:13:19,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 128 transitions, 728 flow [2023-08-27 07:13:19,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 128 transitions, 720 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 07:13:19,060 INFO L231 Difference]: Finished difference. Result has 63 places, 84 transitions, 341 flow [2023-08-27 07:13:19,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=63, PETRI_TRANSITIONS=84} [2023-08-27 07:13:19,061 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-27 07:13:19,061 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 84 transitions, 341 flow [2023-08-27 07:13:19,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:19,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:19,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:19,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 07:13:19,062 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:19,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:19,062 INFO L85 PathProgramCache]: Analyzing trace with hash -74613258, now seen corresponding path program 1 times [2023-08-27 07:13:19,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:19,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577095359] [2023-08-27 07:13:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:19,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:19,159 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 07:13:19,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:19,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577095359] [2023-08-27 07:13:19,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577095359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:19,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:19,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:13:19,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061235143] [2023-08-27 07:13:19,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:19,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:13:19,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:19,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:13:19,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:13:19,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 849 [2023-08-27 07:13:19,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 84 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:19,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:19,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 849 [2023-08-27 07:13:19,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:21,680 INFO L124 PetriNetUnfolderBase]: 16246/21131 cut-off events. [2023-08-27 07:13:21,680 INFO L125 PetriNetUnfolderBase]: For 16795/16795 co-relation queries the response was YES. [2023-08-27 07:13:21,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59124 conditions, 21131 events. 16246/21131 cut-off events. For 16795/16795 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 102163 event pairs, 12344 based on Foata normal form. 252/16200 useless extension candidates. Maximal degree in co-relation 59104. Up to 15259 conditions per place. [2023-08-27 07:13:21,780 INFO L140 encePairwiseOnDemand]: 840/849 looper letters, 147 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2023-08-27 07:13:21,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 150 transitions, 896 flow [2023-08-27 07:13:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:13:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:13:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1213 transitions. [2023-08-27 07:13:21,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3571849234393404 [2023-08-27 07:13:21,783 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1213 transitions. [2023-08-27 07:13:21,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1213 transitions. [2023-08-27 07:13:21,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:21,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1213 transitions. [2023-08-27 07:13:21,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.25) internal successors, (1213), 4 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:21,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:21,790 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:21,790 INFO L175 Difference]: Start difference. First operand has 63 places, 84 transitions, 341 flow. Second operand 4 states and 1213 transitions. [2023-08-27 07:13:21,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 150 transitions, 896 flow [2023-08-27 07:13:21,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 150 transitions, 888 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:13:21,801 INFO L231 Difference]: Finished difference. Result has 65 places, 84 transitions, 357 flow [2023-08-27 07:13:21,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=357, PETRI_PLACES=65, PETRI_TRANSITIONS=84} [2023-08-27 07:13:21,802 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2023-08-27 07:13:21,802 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 84 transitions, 357 flow [2023-08-27 07:13:21,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:21,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:21,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:21,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 07:13:21,803 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:21,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash -74613254, now seen corresponding path program 1 times [2023-08-27 07:13:21,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:21,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910554690] [2023-08-27 07:13:21,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:21,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:21,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:21,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910554690] [2023-08-27 07:13:21,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910554690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:21,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:21,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:13:21,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497722669] [2023-08-27 07:13:21,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:21,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:21,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:21,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:13:21,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 849 [2023-08-27 07:13:21,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 84 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:21,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:21,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 849 [2023-08-27 07:13:21,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:24,323 INFO L124 PetriNetUnfolderBase]: 16134/20959 cut-off events. [2023-08-27 07:13:24,323 INFO L125 PetriNetUnfolderBase]: For 19808/19808 co-relation queries the response was YES. [2023-08-27 07:13:24,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60883 conditions, 20959 events. 16134/20959 cut-off events. For 19808/19808 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 100976 event pairs, 7570 based on Foata normal form. 0/17461 useless extension candidates. Maximal degree in co-relation 60862. Up to 16689 conditions per place. [2023-08-27 07:13:24,446 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 114 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-08-27 07:13:24,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 117 transitions, 737 flow [2023-08-27 07:13:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:24,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1055 transitions. [2023-08-27 07:13:24,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41421279937181 [2023-08-27 07:13:24,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1055 transitions. [2023-08-27 07:13:24,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1055 transitions. [2023-08-27 07:13:24,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:24,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1055 transitions. [2023-08-27 07:13:24,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:24,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:24,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:24,455 INFO L175 Difference]: Start difference. First operand has 65 places, 84 transitions, 357 flow. Second operand 3 states and 1055 transitions. [2023-08-27 07:13:24,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 117 transitions, 737 flow [2023-08-27 07:13:24,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 117 transitions, 731 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 07:13:24,466 INFO L231 Difference]: Finished difference. Result has 68 places, 85 transitions, 371 flow [2023-08-27 07:13:24,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=68, PETRI_TRANSITIONS=85} [2023-08-27 07:13:24,466 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2023-08-27 07:13:24,467 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 85 transitions, 371 flow [2023-08-27 07:13:24,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:24,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:24,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:24,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 07:13:24,467 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:24,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:24,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1981958249, now seen corresponding path program 1 times [2023-08-27 07:13:24,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:24,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829570156] [2023-08-27 07:13:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:24,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:24,626 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 07:13:24,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:24,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829570156] [2023-08-27 07:13:24,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829570156] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:24,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037975070] [2023-08-27 07:13:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:24,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:24,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:24,628 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 07:13:24,655 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 07:13:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:24,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 07:13:24,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:24,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:13:24,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037975070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:24,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:13:24,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-27 07:13:24,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797704098] [2023-08-27 07:13:24,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:24,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:13:24,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:24,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:13:24,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:13:24,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 849 [2023-08-27 07:13:24,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:24,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:24,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 849 [2023-08-27 07:13:24,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:26,683 INFO L124 PetriNetUnfolderBase]: 11850/15411 cut-off events. [2023-08-27 07:13:26,683 INFO L125 PetriNetUnfolderBase]: For 20409/20409 co-relation queries the response was YES. [2023-08-27 07:13:26,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47959 conditions, 15411 events. 11850/15411 cut-off events. For 20409/20409 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 70688 event pairs, 9182 based on Foata normal form. 30/13727 useless extension candidates. Maximal degree in co-relation 47935. Up to 15173 conditions per place. [2023-08-27 07:13:26,873 INFO L140 encePairwiseOnDemand]: 839/849 looper letters, 120 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2023-08-27 07:13:26,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 135 transitions, 809 flow [2023-08-27 07:13:26,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:13:26,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:13:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1460 transitions. [2023-08-27 07:13:26,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34393404004711425 [2023-08-27 07:13:26,876 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1460 transitions. [2023-08-27 07:13:26,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1460 transitions. [2023-08-27 07:13:26,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:26,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1460 transitions. [2023-08-27 07:13:26,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:26,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:26,884 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:26,884 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 371 flow. Second operand 5 states and 1460 transitions. [2023-08-27 07:13:26,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 135 transitions, 809 flow [2023-08-27 07:13:26,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 135 transitions, 803 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:13:26,894 INFO L231 Difference]: Finished difference. Result has 72 places, 97 transitions, 494 flow [2023-08-27 07:13:26,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=72, PETRI_TRANSITIONS=97} [2023-08-27 07:13:26,895 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2023-08-27 07:13:26,895 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 97 transitions, 494 flow [2023-08-27 07:13:26,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:26,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:26,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:26,905 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 07:13:27,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 07:13:27,101 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:27,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:27,102 INFO L85 PathProgramCache]: Analyzing trace with hash -229332531, now seen corresponding path program 1 times [2023-08-27 07:13:27,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:27,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925317441] [2023-08-27 07:13:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:27,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:27,228 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 07:13:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925317441] [2023-08-27 07:13:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925317441] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657563502] [2023-08-27 07:13:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:27,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:27,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:27,230 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 07:13:27,247 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 07:13:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:27,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:13:27,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:27,404 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 07:13:27,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:13:27,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657563502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:27,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:13:27,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 07:13:27,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507833768] [2023-08-27 07:13:27,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:27,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:27,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:27,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:27,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:13:27,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 849 [2023-08-27 07:13:27,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 97 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:27,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:27,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 849 [2023-08-27 07:13:27,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:28,309 INFO L124 PetriNetUnfolderBase]: 4552/6033 cut-off events. [2023-08-27 07:13:28,309 INFO L125 PetriNetUnfolderBase]: For 8606/8606 co-relation queries the response was YES. [2023-08-27 07:13:28,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17101 conditions, 6033 events. 4552/6033 cut-off events. For 8606/8606 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 24351 event pairs, 3284 based on Foata normal form. 1060/6539 useless extension candidates. Maximal degree in co-relation 17075. Up to 6033 conditions per place. [2023-08-27 07:13:28,336 INFO L140 encePairwiseOnDemand]: 842/849 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-27 07:13:28,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 89 transitions, 622 flow [2023-08-27 07:13:28,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:28,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1032 transitions. [2023-08-27 07:13:28,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40518256772673733 [2023-08-27 07:13:28,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1032 transitions. [2023-08-27 07:13:28,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1032 transitions. [2023-08-27 07:13:28,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:28,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1032 transitions. [2023-08-27 07:13:28,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.0) internal successors, (1032), 3 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:28,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:28,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:28,345 INFO L175 Difference]: Start difference. First operand has 72 places, 97 transitions, 494 flow. Second operand 3 states and 1032 transitions. [2023-08-27 07:13:28,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 89 transitions, 622 flow [2023-08-27 07:13:28,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 89 transitions, 612 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 07:13:28,351 INFO L231 Difference]: Finished difference. Result has 63 places, 89 transitions, 436 flow [2023-08-27 07:13:28,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=63, PETRI_TRANSITIONS=89} [2023-08-27 07:13:28,351 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-27 07:13:28,351 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 89 transitions, 436 flow [2023-08-27 07:13:28,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:28,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:28,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:28,363 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 07:13:28,560 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,SelfDestructingSolverStorable15 [2023-08-27 07:13:28,560 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:28,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1480628082, now seen corresponding path program 1 times [2023-08-27 07:13:28,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:28,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702082687] [2023-08-27 07:13:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:28,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:28,744 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 07:13:28,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:28,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702082687] [2023-08-27 07:13:28,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702082687] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:28,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268261689] [2023-08-27 07:13:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:28,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:28,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:28,749 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 07:13:28,776 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 07:13:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:28,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 07:13:28,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:13:28,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:13:28,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268261689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:28,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:13:28,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2023-08-27 07:13:28,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109120965] [2023-08-27 07:13:28,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:28,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:28,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:28,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:28,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:13:28,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 849 [2023-08-27 07:13:28,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 89 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:28,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:28,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 849 [2023-08-27 07:13:28,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:29,588 INFO L124 PetriNetUnfolderBase]: 3134/4197 cut-off events. [2023-08-27 07:13:29,588 INFO L125 PetriNetUnfolderBase]: For 3638/3638 co-relation queries the response was YES. [2023-08-27 07:13:29,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11691 conditions, 4197 events. 3134/4197 cut-off events. For 3638/3638 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 16173 event pairs, 2138 based on Foata normal form. 418/4241 useless extension candidates. Maximal degree in co-relation 11668. Up to 4197 conditions per place. [2023-08-27 07:13:29,605 INFO L140 encePairwiseOnDemand]: 847/849 looper letters, 87 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-08-27 07:13:29,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 608 flow [2023-08-27 07:13:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:29,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1029 transitions. [2023-08-27 07:13:29,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4040047114252061 [2023-08-27 07:13:29,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1029 transitions. [2023-08-27 07:13:29,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1029 transitions. [2023-08-27 07:13:29,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:29,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1029 transitions. [2023-08-27 07:13:29,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:29,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:29,613 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:29,613 INFO L175 Difference]: Start difference. First operand has 63 places, 89 transitions, 436 flow. Second operand 3 states and 1029 transitions. [2023-08-27 07:13:29,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 608 flow [2023-08-27 07:13:29,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 605 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:13:29,620 INFO L231 Difference]: Finished difference. Result has 62 places, 88 transitions, 431 flow [2023-08-27 07:13:29,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=62, PETRI_TRANSITIONS=88} [2023-08-27 07:13:29,620 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -8 predicate places. [2023-08-27 07:13:29,621 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 88 transitions, 431 flow [2023-08-27 07:13:29,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:29,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:29,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:29,630 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 07:13:29,827 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,SelfDestructingSolverStorable16 [2023-08-27 07:13:29,828 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:29,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:29,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1345164519, now seen corresponding path program 1 times [2023-08-27 07:13:29,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:29,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964310869] [2023-08-27 07:13:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:29,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:13:30,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:30,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964310869] [2023-08-27 07:13:30,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964310869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:30,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:30,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:13:30,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243387329] [2023-08-27 07:13:30,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:30,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:13:30,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:13:30,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:13:30,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 849 [2023-08-27 07:13:30,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 88 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:30,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:30,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 849 [2023-08-27 07:13:30,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:31,003 INFO L124 PetriNetUnfolderBase]: 5078/6859 cut-off events. [2023-08-27 07:13:31,004 INFO L125 PetriNetUnfolderBase]: For 5390/5390 co-relation queries the response was YES. [2023-08-27 07:13:31,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18799 conditions, 6859 events. 5078/6859 cut-off events. For 5390/5390 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 28818 event pairs, 3460 based on Foata normal form. 200/6515 useless extension candidates. Maximal degree in co-relation 18776. Up to 4165 conditions per place. [2023-08-27 07:13:31,033 INFO L140 encePairwiseOnDemand]: 838/849 looper letters, 108 selfloop transitions, 24 changer transitions 0/132 dead transitions. [2023-08-27 07:13:31,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 132 transitions, 872 flow [2023-08-27 07:13:31,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:13:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:13:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1482 transitions. [2023-08-27 07:13:31,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3491166077738516 [2023-08-27 07:13:31,036 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1482 transitions. [2023-08-27 07:13:31,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1482 transitions. [2023-08-27 07:13:31,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:31,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1482 transitions. [2023-08-27 07:13:31,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.4) internal successors, (1482), 5 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:31,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:31,041 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:31,041 INFO L175 Difference]: Start difference. First operand has 62 places, 88 transitions, 431 flow. Second operand 5 states and 1482 transitions. [2023-08-27 07:13:31,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 132 transitions, 872 flow [2023-08-27 07:13:31,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 132 transitions, 871 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:13:31,050 INFO L231 Difference]: Finished difference. Result has 67 places, 92 transitions, 553 flow [2023-08-27 07:13:31,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=553, PETRI_PLACES=67, PETRI_TRANSITIONS=92} [2023-08-27 07:13:31,051 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2023-08-27 07:13:31,051 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 92 transitions, 553 flow [2023-08-27 07:13:31,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:31,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:31,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:31,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 07:13:31,051 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:31,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:31,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1345164453, now seen corresponding path program 1 times [2023-08-27 07:13:31,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:31,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744169221] [2023-08-27 07:13:31,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:31,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:31,220 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 07:13:31,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:31,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744169221] [2023-08-27 07:13:31,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744169221] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:31,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948287107] [2023-08-27 07:13:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:31,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:31,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:31,222 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 07:13:31,249 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 07:13:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:31,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 07:13:31,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:31,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:13:31,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:13:31,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948287107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:31,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:13:31,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-27 07:13:31,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279821916] [2023-08-27 07:13:31,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:31,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:13:31,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:31,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:13:31,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:13:31,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 849 [2023-08-27 07:13:31,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 92 transitions, 553 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:31,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:31,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 849 [2023-08-27 07:13:31,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:33,192 INFO L124 PetriNetUnfolderBase]: 9400/12747 cut-off events. [2023-08-27 07:13:33,192 INFO L125 PetriNetUnfolderBase]: For 10775/10775 co-relation queries the response was YES. [2023-08-27 07:13:33,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35499 conditions, 12747 events. 9400/12747 cut-off events. For 10775/10775 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 59166 event pairs, 6400 based on Foata normal form. 0/12107 useless extension candidates. Maximal degree in co-relation 35473. Up to 6847 conditions per place. [2023-08-27 07:13:33,257 INFO L140 encePairwiseOnDemand]: 839/849 looper letters, 129 selfloop transitions, 28 changer transitions 0/157 dead transitions. [2023-08-27 07:13:33,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 157 transitions, 1209 flow [2023-08-27 07:13:33,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:13:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:13:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1484 transitions. [2023-08-27 07:13:33,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3495877502944641 [2023-08-27 07:13:33,260 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1484 transitions. [2023-08-27 07:13:33,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1484 transitions. [2023-08-27 07:13:33,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:33,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1484 transitions. [2023-08-27 07:13:33,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.8) internal successors, (1484), 5 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:33,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:33,266 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:33,266 INFO L175 Difference]: Start difference. First operand has 67 places, 92 transitions, 553 flow. Second operand 5 states and 1484 transitions. [2023-08-27 07:13:33,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 157 transitions, 1209 flow [2023-08-27 07:13:33,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 157 transitions, 1190 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-27 07:13:33,278 INFO L231 Difference]: Finished difference. Result has 72 places, 110 transitions, 829 flow [2023-08-27 07:13:33,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=829, PETRI_PLACES=72, PETRI_TRANSITIONS=110} [2023-08-27 07:13:33,279 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2023-08-27 07:13:33,279 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 110 transitions, 829 flow [2023-08-27 07:13:33,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:33,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:33,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:33,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:33,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:33,489 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:33,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:33,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1345164521, now seen corresponding path program 1 times [2023-08-27 07:13:33,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:33,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385782427] [2023-08-27 07:13:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:33,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:33,669 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 07:13:33,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:33,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385782427] [2023-08-27 07:13:33,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385782427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:33,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405509878] [2023-08-27 07:13:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:33,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:33,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:33,673 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:33,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 07:13:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:33,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 07:13:33,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:13:33,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:13:33,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405509878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:33,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:13:33,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-27 07:13:33,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867492104] [2023-08-27 07:13:33,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:33,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:13:33,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:33,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:13:33,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:13:33,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 849 [2023-08-27 07:13:33,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 110 transitions, 829 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:33,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:33,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 849 [2023-08-27 07:13:33,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:36,945 INFO L124 PetriNetUnfolderBase]: 15712/21571 cut-off events. [2023-08-27 07:13:36,945 INFO L125 PetriNetUnfolderBase]: For 20032/20032 co-relation queries the response was YES. [2023-08-27 07:13:37,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59230 conditions, 21571 events. 15712/21571 cut-off events. For 20032/20032 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 111185 event pairs, 10912 based on Foata normal form. 720/21851 useless extension candidates. Maximal degree in co-relation 59201. Up to 12669 conditions per place. [2023-08-27 07:13:37,082 INFO L140 encePairwiseOnDemand]: 838/849 looper letters, 89 selfloop transitions, 53 changer transitions 0/142 dead transitions. [2023-08-27 07:13:37,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 1237 flow [2023-08-27 07:13:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:13:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:13:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1480 transitions. [2023-08-27 07:13:37,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486454652532391 [2023-08-27 07:13:37,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1480 transitions. [2023-08-27 07:13:37,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1480 transitions. [2023-08-27 07:13:37,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:37,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1480 transitions. [2023-08-27 07:13:37,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:37,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:37,092 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 849.0) internal successors, (5094), 6 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:37,093 INFO L175 Difference]: Start difference. First operand has 72 places, 110 transitions, 829 flow. Second operand 5 states and 1480 transitions. [2023-08-27 07:13:37,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 1237 flow [2023-08-27 07:13:37,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 142 transitions, 1230 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 07:13:37,109 INFO L231 Difference]: Finished difference. Result has 76 places, 110 transitions, 977 flow [2023-08-27 07:13:37,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=977, PETRI_PLACES=76, PETRI_TRANSITIONS=110} [2023-08-27 07:13:37,109 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2023-08-27 07:13:37,109 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 110 transitions, 977 flow [2023-08-27 07:13:37,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:37,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:37,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:37,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:37,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:37,318 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:37,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2099101663, now seen corresponding path program 1 times [2023-08-27 07:13:37,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:37,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755799020] [2023-08-27 07:13:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:37,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:13:37,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:37,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755799020] [2023-08-27 07:13:37,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755799020] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:37,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765169581] [2023-08-27 07:13:37,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:37,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:37,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:37,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:37,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 07:13:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:37,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:13:37,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:13:37,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:13:37,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765169581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:37,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:13:37,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 07:13:37,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262704691] [2023-08-27 07:13:37,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:37,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:37,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:37,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:37,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:13:37,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 849 [2023-08-27 07:13:37,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 110 transitions, 977 flow. Second operand has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:37,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:37,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 849 [2023-08-27 07:13:37,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:40,138 INFO L124 PetriNetUnfolderBase]: 12700/17799 cut-off events. [2023-08-27 07:13:40,138 INFO L125 PetriNetUnfolderBase]: For 18546/18546 co-relation queries the response was YES. [2023-08-27 07:13:40,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47695 conditions, 17799 events. 12700/17799 cut-off events. For 18546/18546 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 93181 event pairs, 9024 based on Foata normal form. 1040/18807 useless extension candidates. Maximal degree in co-relation 47664. Up to 17799 conditions per place. [2023-08-27 07:13:40,237 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 106 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2023-08-27 07:13:40,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 1170 flow [2023-08-27 07:13:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:40,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1025 transitions. [2023-08-27 07:13:40,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40243423635649783 [2023-08-27 07:13:40,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1025 transitions. [2023-08-27 07:13:40,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1025 transitions. [2023-08-27 07:13:40,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:40,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1025 transitions. [2023-08-27 07:13:40,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:40,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:40,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:40,243 INFO L175 Difference]: Start difference. First operand has 76 places, 110 transitions, 977 flow. Second operand 3 states and 1025 transitions. [2023-08-27 07:13:40,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 1170 flow [2023-08-27 07:13:40,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 107 transitions, 1025 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-27 07:13:40,280 INFO L231 Difference]: Finished difference. Result has 70 places, 107 transitions, 813 flow [2023-08-27 07:13:40,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=813, PETRI_PLACES=70, PETRI_TRANSITIONS=107} [2023-08-27 07:13:40,281 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 0 predicate places. [2023-08-27 07:13:40,281 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 107 transitions, 813 flow [2023-08-27 07:13:40,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:40,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:40,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:40,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:40,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:40,487 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:40,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1126140800, now seen corresponding path program 1 times [2023-08-27 07:13:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:40,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653661135] [2023-08-27 07:13:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:40,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:13:40,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:40,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653661135] [2023-08-27 07:13:40,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653661135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:40,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698361918] [2023-08-27 07:13:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:40,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:40,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:40,671 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:40,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 07:13:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:40,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:13:40,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:13:40,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:13:40,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698361918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:40,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:13:40,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 07:13:40,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137052848] [2023-08-27 07:13:40,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:40,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:40,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:40,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:40,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:13:40,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 849 [2023-08-27 07:13:40,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 107 transitions, 813 flow. Second operand has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:40,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:40,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 849 [2023-08-27 07:13:40,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:42,918 INFO L124 PetriNetUnfolderBase]: 9852/14119 cut-off events. [2023-08-27 07:13:42,919 INFO L125 PetriNetUnfolderBase]: For 10067/10067 co-relation queries the response was YES. [2023-08-27 07:13:42,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36151 conditions, 14119 events. 9852/14119 cut-off events. For 10067/10067 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 74261 event pairs, 6992 based on Foata normal form. 704/14791 useless extension candidates. Maximal degree in co-relation 36124. Up to 14119 conditions per place. [2023-08-27 07:13:42,969 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 103 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2023-08-27 07:13:42,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 1001 flow [2023-08-27 07:13:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1023 transitions. [2023-08-27 07:13:42,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4016489988221437 [2023-08-27 07:13:42,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1023 transitions. [2023-08-27 07:13:42,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1023 transitions. [2023-08-27 07:13:42,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:42,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1023 transitions. [2023-08-27 07:13:42,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:42,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:42,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:42,974 INFO L175 Difference]: Start difference. First operand has 70 places, 107 transitions, 813 flow. Second operand 3 states and 1023 transitions. [2023-08-27 07:13:42,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 1001 flow [2023-08-27 07:13:42,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 104 transitions, 973 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 07:13:42,992 INFO L231 Difference]: Finished difference. Result has 66 places, 104 transitions, 767 flow [2023-08-27 07:13:42,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=767, PETRI_PLACES=66, PETRI_TRANSITIONS=104} [2023-08-27 07:13:42,993 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-27 07:13:42,993 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 104 transitions, 767 flow [2023-08-27 07:13:42,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:42,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:42,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:43,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:43,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 07:13:43,200 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:43,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash -525648621, now seen corresponding path program 1 times [2023-08-27 07:13:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:43,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146057974] [2023-08-27 07:13:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:43,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:13:43,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:43,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146057974] [2023-08-27 07:13:43,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146057974] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:43,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596377813] [2023-08-27 07:13:43,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:43,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:43,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:43,364 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:43,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 07:13:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:43,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:13:43,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:13:43,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:13:43,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596377813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:43,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:13:43,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-27 07:13:43,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908884023] [2023-08-27 07:13:43,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:43,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:43,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:43,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:13:43,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 849 [2023-08-27 07:13:43,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 104 transitions, 767 flow. Second operand has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:43,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:43,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 849 [2023-08-27 07:13:43,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:45,480 INFO L124 PetriNetUnfolderBase]: 8956/12967 cut-off events. [2023-08-27 07:13:45,480 INFO L125 PetriNetUnfolderBase]: For 5384/5384 co-relation queries the response was YES. [2023-08-27 07:13:45,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32553 conditions, 12967 events. 8956/12967 cut-off events. For 5384/5384 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 68421 event pairs, 6352 based on Foata normal form. 256/13191 useless extension candidates. Maximal degree in co-relation 32528. Up to 12967 conditions per place. [2023-08-27 07:13:45,528 INFO L140 encePairwiseOnDemand]: 847/849 looper letters, 102 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2023-08-27 07:13:45,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 103 transitions, 967 flow [2023-08-27 07:13:45,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:45,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1021 transitions. [2023-08-27 07:13:45,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40086376128778956 [2023-08-27 07:13:45,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1021 transitions. [2023-08-27 07:13:45,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1021 transitions. [2023-08-27 07:13:45,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:45,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1021 transitions. [2023-08-27 07:13:45,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:45,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:45,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:45,534 INFO L175 Difference]: Start difference. First operand has 66 places, 104 transitions, 767 flow. Second operand 3 states and 1021 transitions. [2023-08-27 07:13:45,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 103 transitions, 967 flow [2023-08-27 07:13:45,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 966 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:13:45,538 INFO L231 Difference]: Finished difference. Result has 66 places, 103 transitions, 762 flow [2023-08-27 07:13:45,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=64, 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=762, PETRI_PLACES=66, PETRI_TRANSITIONS=103} [2023-08-27 07:13:45,539 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-27 07:13:45,539 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 103 transitions, 762 flow [2023-08-27 07:13:45,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:45,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:45,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:45,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:45,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 07:13:45,746 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:45,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash -338672043, now seen corresponding path program 1 times [2023-08-27 07:13:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:45,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592377150] [2023-08-27 07:13:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:45,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:45,880 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 07:13:45,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:45,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592377150] [2023-08-27 07:13:45,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592377150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:13:45,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:13:45,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:13:45,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215058510] [2023-08-27 07:13:45,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:13:45,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:13:45,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:45,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:13:45,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:13:45,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 849 [2023-08-27 07:13:45,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 103 transitions, 762 flow. Second operand has 3 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:45,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:45,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 849 [2023-08-27 07:13:45,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:47,728 INFO L124 PetriNetUnfolderBase]: 8956/12951 cut-off events. [2023-08-27 07:13:47,729 INFO L125 PetriNetUnfolderBase]: For 5544/5544 co-relation queries the response was YES. [2023-08-27 07:13:47,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32522 conditions, 12951 events. 8956/12951 cut-off events. For 5544/5544 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 67784 event pairs, 4112 based on Foata normal form. 16/12935 useless extension candidates. Maximal degree in co-relation 32496. Up to 9505 conditions per place. [2023-08-27 07:13:47,774 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 87 selfloop transitions, 2 changer transitions 26/115 dead transitions. [2023-08-27 07:13:47,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 115 transitions, 1020 flow [2023-08-27 07:13:47,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:13:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:13:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-08-27 07:13:47,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059678052610915 [2023-08-27 07:13:47,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-08-27 07:13:47,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-08-27 07:13:47,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:47,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-08-27 07:13:47,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:47,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:47,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:47,781 INFO L175 Difference]: Start difference. First operand has 66 places, 103 transitions, 762 flow. Second operand 3 states and 1034 transitions. [2023-08-27 07:13:47,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 115 transitions, 1020 flow [2023-08-27 07:13:47,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 1019 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:13:47,784 INFO L231 Difference]: Finished difference. Result has 68 places, 79 transitions, 490 flow [2023-08-27 07:13:47,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=68, PETRI_TRANSITIONS=79} [2023-08-27 07:13:47,785 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2023-08-27 07:13:47,785 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 79 transitions, 490 flow [2023-08-27 07:13:47,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:47,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:47,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:47,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 07:13:47,785 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:47,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1028676549, now seen corresponding path program 1 times [2023-08-27 07:13:47,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:47,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863464074] [2023-08-27 07:13:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:47,953 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 07:13:47,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:47,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863464074] [2023-08-27 07:13:47,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863464074] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:47,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792010683] [2023-08-27 07:13:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:47,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:47,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:47,957 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:47,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 07:13:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:48,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 07:13:48,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:48,292 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 07:13:48,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:48,554 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:48,555 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 216 treesize of output 204 [2023-08-27 07:13:48,767 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 07:13:48,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792010683] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:48,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:48,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 07:13:48,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425993778] [2023-08-27 07:13:48,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:48,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:13:48,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:13:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:13:48,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 849 [2023-08-27 07:13:48,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 490 flow. Second operand has 7 states, 7 states have (on average 335.14285714285717) internal successors, (2346), 7 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:48,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:48,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 849 [2023-08-27 07:13:48,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:50,776 INFO L124 PetriNetUnfolderBase]: 9016/12744 cut-off events. [2023-08-27 07:13:50,776 INFO L125 PetriNetUnfolderBase]: For 6445/6445 co-relation queries the response was YES. [2023-08-27 07:13:50,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33097 conditions, 12744 events. 9016/12744 cut-off events. For 6445/6445 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 65111 event pairs, 2216 based on Foata normal form. 8/12736 useless extension candidates. Maximal degree in co-relation 33069. Up to 9633 conditions per place. [2023-08-27 07:13:50,828 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 98 selfloop transitions, 4 changer transitions 3/105 dead transitions. [2023-08-27 07:13:50,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 105 transitions, 768 flow [2023-08-27 07:13:50,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:13:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:13:50,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1357 transitions. [2023-08-27 07:13:50,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3995877502944641 [2023-08-27 07:13:50,830 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1357 transitions. [2023-08-27 07:13:50,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1357 transitions. [2023-08-27 07:13:50,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:50,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1357 transitions. [2023-08-27 07:13:50,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 339.25) internal successors, (1357), 4 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:50,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:50,834 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 849.0) internal successors, (4245), 5 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:50,834 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 490 flow. Second operand 4 states and 1357 transitions. [2023-08-27 07:13:50,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 105 transitions, 768 flow [2023-08-27 07:13:50,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 716 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-08-27 07:13:50,840 INFO L231 Difference]: Finished difference. Result has 65 places, 81 transitions, 467 flow [2023-08-27 07:13:50,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=467, PETRI_PLACES=65, PETRI_TRANSITIONS=81} [2023-08-27 07:13:50,841 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2023-08-27 07:13:50,841 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 81 transitions, 467 flow [2023-08-27 07:13:50,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 335.14285714285717) internal successors, (2346), 7 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:50,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:50,841 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:50,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:51,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 07:13:51,042 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:51,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:51,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1825250090, now seen corresponding path program 2 times [2023-08-27 07:13:51,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:51,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461295799] [2023-08-27 07:13:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:51,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:13:51,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:51,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461295799] [2023-08-27 07:13:51,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461295799] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:51,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490460104] [2023-08-27 07:13:51,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:13:51,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:51,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:51,344 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:51,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 07:13:51,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:13:51,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:13:51,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 07:13:51,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:13:51,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:52,074 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:52,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 268 treesize of output 274 [2023-08-27 07:13:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:13:52,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490460104] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:13:52,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:13:52,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 07:13:52,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160658613] [2023-08-27 07:13:52,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:13:52,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 07:13:52,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:13:52,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 07:13:52,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-08-27 07:13:52,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 849 [2023-08-27 07:13:52,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 81 transitions, 467 flow. Second operand has 13 states, 13 states have (on average 258.84615384615387) internal successors, (3365), 13 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:52,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:13:52,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 849 [2023-08-27 07:13:52,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:13:54,432 INFO L124 PetriNetUnfolderBase]: 7272/10504 cut-off events. [2023-08-27 07:13:54,432 INFO L125 PetriNetUnfolderBase]: For 7670/7670 co-relation queries the response was YES. [2023-08-27 07:13:54,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27641 conditions, 10504 events. 7272/10504 cut-off events. For 7670/7670 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 54248 event pairs, 1824 based on Foata normal form. 720/11208 useless extension candidates. Maximal degree in co-relation 27614. Up to 3936 conditions per place. [2023-08-27 07:13:54,467 INFO L140 encePairwiseOnDemand]: 836/849 looper letters, 123 selfloop transitions, 22 changer transitions 26/171 dead transitions. [2023-08-27 07:13:54,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 171 transitions, 1079 flow [2023-08-27 07:13:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 07:13:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 07:13:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2655 transitions. [2023-08-27 07:13:54,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3127208480565371 [2023-08-27 07:13:54,470 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2655 transitions. [2023-08-27 07:13:54,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2655 transitions. [2023-08-27 07:13:54,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:13:54,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2655 transitions. [2023-08-27 07:13:54,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 265.5) internal successors, (2655), 10 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:54,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 849.0) internal successors, (9339), 11 states have internal predecessors, (9339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:54,480 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 849.0) internal successors, (9339), 11 states have internal predecessors, (9339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:54,481 INFO L175 Difference]: Start difference. First operand has 65 places, 81 transitions, 467 flow. Second operand 10 states and 2655 transitions. [2023-08-27 07:13:54,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 171 transitions, 1079 flow [2023-08-27 07:13:54,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 171 transitions, 1066 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 07:13:54,492 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 529 flow [2023-08-27 07:13:54,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=529, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2023-08-27 07:13:54,492 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 4 predicate places. [2023-08-27 07:13:54,493 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 529 flow [2023-08-27 07:13:54,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 258.84615384615387) internal successors, (3365), 13 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:13:54,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:13:54,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:13:54,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 07:13:54,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 07:13:54,700 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:13:54,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:13:54,700 INFO L85 PathProgramCache]: Analyzing trace with hash 792841724, now seen corresponding path program 1 times [2023-08-27 07:13:54,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:13:54,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997864391] [2023-08-27 07:13:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:13:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:55,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:13:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997864391] [2023-08-27 07:13:55,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997864391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:13:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15843805] [2023-08-27 07:13:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:13:55,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:13:55,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:13:55,767 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:13:55,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 07:13:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:13:55,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 07:13:55,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:13:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:13:56,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:13:58,160 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:13:58,161 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 421 treesize of output 610 [2023-08-27 07:14:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:14:04,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15843805] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:04,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:04,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-27 07:14:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529001710] [2023-08-27 07:14:04,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:04,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 07:14:04,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:04,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 07:14:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-27 07:14:04,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 849 [2023-08-27 07:14:04,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 529 flow. Second operand has 16 states, 16 states have (on average 229.625) internal successors, (3674), 16 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:04,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:04,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 849 [2023-08-27 07:14:04,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:08,159 INFO L124 PetriNetUnfolderBase]: 13369/19402 cut-off events. [2023-08-27 07:14:08,159 INFO L125 PetriNetUnfolderBase]: For 26437/26437 co-relation queries the response was YES. [2023-08-27 07:14:08,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55883 conditions, 19402 events. 13369/19402 cut-off events. For 26437/26437 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 112833 event pairs, 2291 based on Foata normal form. 24/19393 useless extension candidates. Maximal degree in co-relation 55854. Up to 9129 conditions per place. [2023-08-27 07:14:08,334 INFO L140 encePairwiseOnDemand]: 835/849 looper letters, 175 selfloop transitions, 44 changer transitions 46/265 dead transitions. [2023-08-27 07:14:08,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 265 transitions, 1841 flow [2023-08-27 07:14:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 07:14:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 07:14:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3336 transitions. [2023-08-27 07:14:08,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28066633013629483 [2023-08-27 07:14:08,339 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3336 transitions. [2023-08-27 07:14:08,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3336 transitions. [2023-08-27 07:14:08,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:08,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3336 transitions. [2023-08-27 07:14:08,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 238.28571428571428) internal successors, (3336), 14 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:08,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 849.0) internal successors, (12735), 15 states have internal predecessors, (12735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:08,353 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 849.0) internal successors, (12735), 15 states have internal predecessors, (12735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:08,353 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 529 flow. Second operand 14 states and 3336 transitions. [2023-08-27 07:14:08,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 265 transitions, 1841 flow [2023-08-27 07:14:08,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 265 transitions, 1765 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-27 07:14:08,462 INFO L231 Difference]: Finished difference. Result has 87 places, 117 transitions, 908 flow [2023-08-27 07:14:08,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=908, PETRI_PLACES=87, PETRI_TRANSITIONS=117} [2023-08-27 07:14:08,462 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 17 predicate places. [2023-08-27 07:14:08,462 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 117 transitions, 908 flow [2023-08-27 07:14:08,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 229.625) internal successors, (3674), 16 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:08,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:08,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:08,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:08,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:08,664 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:14:08,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:08,665 INFO L85 PathProgramCache]: Analyzing trace with hash -287779524, now seen corresponding path program 1 times [2023-08-27 07:14:08,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:08,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10164197] [2023-08-27 07:14:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:08,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:14:08,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:08,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10164197] [2023-08-27 07:14:08,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10164197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:14:08,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:14:08,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:14:08,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194729993] [2023-08-27 07:14:08,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:14:08,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:14:08,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:08,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:14:08,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:14:08,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 849 [2023-08-27 07:14:08,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 117 transitions, 908 flow. Second operand has 5 states, 5 states have (on average 281.8) internal successors, (1409), 5 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:08,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:08,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 849 [2023-08-27 07:14:08,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:11,596 INFO L124 PetriNetUnfolderBase]: 11489/17026 cut-off events. [2023-08-27 07:14:11,596 INFO L125 PetriNetUnfolderBase]: For 30501/30501 co-relation queries the response was YES. [2023-08-27 07:14:11,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52537 conditions, 17026 events. 11489/17026 cut-off events. For 30501/30501 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 101040 event pairs, 7869 based on Foata normal form. 560/17562 useless extension candidates. Maximal degree in co-relation 52504. Up to 7439 conditions per place. [2023-08-27 07:14:11,661 INFO L140 encePairwiseOnDemand]: 839/849 looper letters, 134 selfloop transitions, 45 changer transitions 0/179 dead transitions. [2023-08-27 07:14:11,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 179 transitions, 1663 flow [2023-08-27 07:14:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:14:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:14:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1737 transitions. [2023-08-27 07:14:11,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409893992932862 [2023-08-27 07:14:11,663 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1737 transitions. [2023-08-27 07:14:11,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1737 transitions. [2023-08-27 07:14:11,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:11,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1737 transitions. [2023-08-27 07:14:11,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 289.5) internal successors, (1737), 6 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:11,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:11,669 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:11,669 INFO L175 Difference]: Start difference. First operand has 87 places, 117 transitions, 908 flow. Second operand 6 states and 1737 transitions. [2023-08-27 07:14:11,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 179 transitions, 1663 flow [2023-08-27 07:14:11,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 179 transitions, 1551 flow, removed 42 selfloop flow, removed 3 redundant places. [2023-08-27 07:14:11,789 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 932 flow [2023-08-27 07:14:11,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=932, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2023-08-27 07:14:11,789 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2023-08-27 07:14:11,789 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 932 flow [2023-08-27 07:14:11,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 281.8) internal successors, (1409), 5 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:11,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:11,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:11,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 07:14:11,790 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:14:11,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash -311715649, now seen corresponding path program 1 times [2023-08-27 07:14:11,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:11,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433667613] [2023-08-27 07:14:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:11,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:14:12,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:12,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433667613] [2023-08-27 07:14:12,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433667613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:12,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565747840] [2023-08-27 07:14:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:12,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:12,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:12,261 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:12,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 07:14:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:12,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 07:14:12,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:14:12,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:13,586 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:13,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 788 treesize of output 863 [2023-08-27 07:14:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:14:14,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565747840] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:14,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:14,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-27 07:14:14,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99180160] [2023-08-27 07:14:14,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:14,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 07:14:14,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 07:14:14,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-08-27 07:14:14,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 849 [2023-08-27 07:14:14,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 932 flow. Second operand has 11 states, 11 states have (on average 241.1818181818182) internal successors, (2653), 11 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:14,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:14,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 849 [2023-08-27 07:14:14,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:17,969 INFO L124 PetriNetUnfolderBase]: 12237/18270 cut-off events. [2023-08-27 07:14:17,969 INFO L125 PetriNetUnfolderBase]: For 28144/28144 co-relation queries the response was YES. [2023-08-27 07:14:18,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52413 conditions, 18270 events. 12237/18270 cut-off events. For 28144/28144 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 109735 event pairs, 4453 based on Foata normal form. 576/18822 useless extension candidates. Maximal degree in co-relation 52380. Up to 7305 conditions per place. [2023-08-27 07:14:18,045 INFO L140 encePairwiseOnDemand]: 836/849 looper letters, 131 selfloop transitions, 41 changer transitions 17/189 dead transitions. [2023-08-27 07:14:18,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 189 transitions, 1562 flow [2023-08-27 07:14:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:14:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:14:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1990 transitions. [2023-08-27 07:14:18,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29299175500588925 [2023-08-27 07:14:18,048 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1990 transitions. [2023-08-27 07:14:18,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1990 transitions. [2023-08-27 07:14:18,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:18,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1990 transitions. [2023-08-27 07:14:18,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 248.75) internal successors, (1990), 8 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:18,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 849.0) internal successors, (7641), 9 states have internal predecessors, (7641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:18,056 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 849.0) internal successors, (7641), 9 states have internal predecessors, (7641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:18,056 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 932 flow. Second operand 8 states and 1990 transitions. [2023-08-27 07:14:18,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 189 transitions, 1562 flow [2023-08-27 07:14:18,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 189 transitions, 1484 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 07:14:18,136 INFO L231 Difference]: Finished difference. Result has 93 places, 118 transitions, 954 flow [2023-08-27 07:14:18,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=954, PETRI_PLACES=93, PETRI_TRANSITIONS=118} [2023-08-27 07:14:18,137 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 23 predicate places. [2023-08-27 07:14:18,137 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 118 transitions, 954 flow [2023-08-27 07:14:18,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 241.1818181818182) internal successors, (2653), 11 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:18,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:18,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:18,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:18,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 07:14:18,339 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:14:18,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:18,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1311814404, now seen corresponding path program 1 times [2023-08-27 07:14:18,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:18,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727511166] [2023-08-27 07:14:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:18,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:14:18,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:18,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727511166] [2023-08-27 07:14:18,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727511166] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:18,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568981137] [2023-08-27 07:14:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:18,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:18,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:18,773 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:18,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 07:14:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:18,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 07:14:18,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:14:19,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:20,310 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:20,310 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 785 treesize of output 860 [2023-08-27 07:14:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:14:22,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568981137] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:22,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:22,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-27 07:14:22,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178185969] [2023-08-27 07:14:22,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:22,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 07:14:22,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:22,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 07:14:22,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:14:22,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 849 [2023-08-27 07:14:22,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 118 transitions, 954 flow. Second operand has 9 states, 9 states have (on average 285.8888888888889) internal successors, (2573), 9 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:22,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:22,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 849 [2023-08-27 07:14:22,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:25,427 INFO L124 PetriNetUnfolderBase]: 13473/20250 cut-off events. [2023-08-27 07:14:25,427 INFO L125 PetriNetUnfolderBase]: For 37988/37988 co-relation queries the response was YES. [2023-08-27 07:14:25,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57894 conditions, 20250 events. 13473/20250 cut-off events. For 37988/37988 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 124046 event pairs, 4581 based on Foata normal form. 616/20842 useless extension candidates. Maximal degree in co-relation 57860. Up to 6458 conditions per place. [2023-08-27 07:14:25,531 INFO L140 encePairwiseOnDemand]: 845/849 looper letters, 143 selfloop transitions, 16 changer transitions 9/168 dead transitions. [2023-08-27 07:14:25,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 168 transitions, 1406 flow [2023-08-27 07:14:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:14:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:14:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1769 transitions. [2023-08-27 07:14:25,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34727129956811936 [2023-08-27 07:14:25,534 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1769 transitions. [2023-08-27 07:14:25,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1769 transitions. [2023-08-27 07:14:25,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:25,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1769 transitions. [2023-08-27 07:14:25,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.8333333333333) internal successors, (1769), 6 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:25,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:25,540 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:25,540 INFO L175 Difference]: Start difference. First operand has 93 places, 118 transitions, 954 flow. Second operand 6 states and 1769 transitions. [2023-08-27 07:14:25,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 168 transitions, 1406 flow [2023-08-27 07:14:25,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 168 transitions, 1346 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 07:14:25,660 INFO L231 Difference]: Finished difference. Result has 95 places, 113 transitions, 870 flow [2023-08-27 07:14:25,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=870, PETRI_PLACES=95, PETRI_TRANSITIONS=113} [2023-08-27 07:14:25,660 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 25 predicate places. [2023-08-27 07:14:25,660 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 113 transitions, 870 flow [2023-08-27 07:14:25,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 285.8888888888889) internal successors, (2573), 9 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:25,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:25,661 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:25,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:25,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:25,862 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:14:25,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:25,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1277055728, now seen corresponding path program 2 times [2023-08-27 07:14:25,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:25,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33664836] [2023-08-27 07:14:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:25,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:14:26,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:26,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33664836] [2023-08-27 07:14:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33664836] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:26,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336760696] [2023-08-27 07:14:26,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:14:26,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:26,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:26,433 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:26,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 07:14:26,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:14:26,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:14:26,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-27 07:14:26,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 07:14:26,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:28,585 INFO L322 Elim1Store]: treesize reduction 114, result has 68.9 percent of original size [2023-08-27 07:14:28,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 888 treesize of output 1020 [2023-08-27 07:14:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 07:14:46,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336760696] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:14:46,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:14:46,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-08-27 07:14:46,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242007516] [2023-08-27 07:14:46,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:14:46,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 07:14:46,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:14:46,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 07:14:46,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-27 07:14:46,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 849 [2023-08-27 07:14:46,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 113 transitions, 870 flow. Second operand has 14 states, 14 states have (on average 223.85714285714286) internal successors, (3134), 14 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:46,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:14:46,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 849 [2023-08-27 07:14:46,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:14:49,048 INFO L124 PetriNetUnfolderBase]: 9801/15094 cut-off events. [2023-08-27 07:14:49,049 INFO L125 PetriNetUnfolderBase]: For 23048/23048 co-relation queries the response was YES. [2023-08-27 07:14:49,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42882 conditions, 15094 events. 9801/15094 cut-off events. For 23048/23048 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 93019 event pairs, 2637 based on Foata normal form. 160/15230 useless extension candidates. Maximal degree in co-relation 42846. Up to 5157 conditions per place. [2023-08-27 07:14:49,104 INFO L140 encePairwiseOnDemand]: 838/849 looper letters, 139 selfloop transitions, 40 changer transitions 43/222 dead transitions. [2023-08-27 07:14:49,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 222 transitions, 1674 flow [2023-08-27 07:14:49,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 07:14:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 07:14:49,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2554 transitions. [2023-08-27 07:14:49,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27347681764642895 [2023-08-27 07:14:49,106 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2554 transitions. [2023-08-27 07:14:49,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2554 transitions. [2023-08-27 07:14:49,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:14:49,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2554 transitions. [2023-08-27 07:14:49,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 232.1818181818182) internal successors, (2554), 11 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:49,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 849.0) internal successors, (10188), 12 states have internal predecessors, (10188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:49,114 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 849.0) internal successors, (10188), 12 states have internal predecessors, (10188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:49,114 INFO L175 Difference]: Start difference. First operand has 95 places, 113 transitions, 870 flow. Second operand 11 states and 2554 transitions. [2023-08-27 07:14:49,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 222 transitions, 1674 flow [2023-08-27 07:14:49,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 222 transitions, 1643 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 07:14:49,241 INFO L231 Difference]: Finished difference. Result has 102 places, 113 transitions, 927 flow [2023-08-27 07:14:49,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=927, PETRI_PLACES=102, PETRI_TRANSITIONS=113} [2023-08-27 07:14:49,242 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 32 predicate places. [2023-08-27 07:14:49,242 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 113 transitions, 927 flow [2023-08-27 07:14:49,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 223.85714285714286) internal successors, (3134), 14 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:14:49,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:14:49,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:14:49,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 07:14:49,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:49,444 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:14:49,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:14:49,444 INFO L85 PathProgramCache]: Analyzing trace with hash -840974029, now seen corresponding path program 1 times [2023-08-27 07:14:49,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:14:49,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521370011] [2023-08-27 07:14:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:49,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:14:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:14:49,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:14:49,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521370011] [2023-08-27 07:14:49,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521370011] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:14:49,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60022147] [2023-08-27 07:14:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:14:49,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:14:49,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:14:49,833 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:14:49,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 07:14:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:14:50,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 07:14:50,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:14:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:14:50,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:14:52,222 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:14:52,222 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 504 treesize of output 693 [2023-08-27 07:15:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:15:14,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60022147] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:15:14,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:15:14,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 07:15:14,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186760906] [2023-08-27 07:15:14,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:15:14,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 07:15:14,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:15:14,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 07:15:14,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-27 07:15:14,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 849 [2023-08-27 07:15:14,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 113 transitions, 927 flow. Second operand has 12 states, 12 states have (on average 282.5833333333333) internal successors, (3391), 12 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:15:14,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:15:14,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 849 [2023-08-27 07:15:14,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:15:16,810 INFO L124 PetriNetUnfolderBase]: 9453/14386 cut-off events. [2023-08-27 07:15:16,811 INFO L125 PetriNetUnfolderBase]: For 26890/26890 co-relation queries the response was YES. [2023-08-27 07:15:16,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41496 conditions, 14386 events. 9453/14386 cut-off events. For 26890/26890 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 85358 event pairs, 1921 based on Foata normal form. 420/14788 useless extension candidates. Maximal degree in co-relation 41459. Up to 2985 conditions per place. [2023-08-27 07:15:16,890 INFO L140 encePairwiseOnDemand]: 846/849 looper letters, 131 selfloop transitions, 16 changer transitions 33/180 dead transitions. [2023-08-27 07:15:16,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 180 transitions, 1493 flow [2023-08-27 07:15:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:15:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:15:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2045 transitions. [2023-08-27 07:15:16,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3441023052330473 [2023-08-27 07:15:16,893 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2045 transitions. [2023-08-27 07:15:16,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2045 transitions. [2023-08-27 07:15:16,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:15:16,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2045 transitions. [2023-08-27 07:15:16,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 292.14285714285717) internal successors, (2045), 7 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:15:16,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 849.0) internal successors, (6792), 8 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:15:16,898 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 849.0) internal successors, (6792), 8 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:15:16,898 INFO L175 Difference]: Start difference. First operand has 102 places, 113 transitions, 927 flow. Second operand 7 states and 2045 transitions. [2023-08-27 07:15:16,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 180 transitions, 1493 flow [2023-08-27 07:15:16,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 180 transitions, 1423 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-27 07:15:16,965 INFO L231 Difference]: Finished difference. Result has 100 places, 101 transitions, 776 flow [2023-08-27 07:15:16,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=776, PETRI_PLACES=100, PETRI_TRANSITIONS=101} [2023-08-27 07:15:16,965 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2023-08-27 07:15:16,965 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 101 transitions, 776 flow [2023-08-27 07:15:16,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 282.5833333333333) internal successors, (3391), 12 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:15:16,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:15:16,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:15:16,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 07:15:17,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:15:17,166 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:15:17,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:15:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1778485275, now seen corresponding path program 1 times [2023-08-27 07:15:17,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:15:17,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409133420] [2023-08-27 07:15:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:15:17,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:15:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:15:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:15:18,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:15:18,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409133420] [2023-08-27 07:15:18,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409133420] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:15:18,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028803363] [2023-08-27 07:15:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:15:18,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:15:18,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:15:18,753 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:15:18,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 07:15:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:15:18,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 07:15:19,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:15:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:15:19,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:15:22,515 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:15:22,516 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 503 treesize of output 885 [2023-08-27 07:15:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 07:15:33,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028803363] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:15:33,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:15:33,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 4] total 15 [2023-08-27 07:15:33,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685128634] [2023-08-27 07:15:33,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:15:33,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 07:15:33,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:15:33,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 07:15:33,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-08-27 07:15:33,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 849 [2023-08-27 07:15:33,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 776 flow. Second operand has 17 states, 17 states have (on average 215.88235294117646) internal successors, (3670), 17 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:15:33,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:15:33,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 849 [2023-08-27 07:15:33,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:15:37,126 INFO L124 PetriNetUnfolderBase]: 10131/15313 cut-off events. [2023-08-27 07:15:37,126 INFO L125 PetriNetUnfolderBase]: For 31688/31688 co-relation queries the response was YES. [2023-08-27 07:15:37,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46162 conditions, 15313 events. 10131/15313 cut-off events. For 31688/31688 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 91574 event pairs, 2077 based on Foata normal form. 12/15307 useless extension candidates. Maximal degree in co-relation 46126. Up to 5789 conditions per place. [2023-08-27 07:15:37,221 INFO L140 encePairwiseOnDemand]: 835/849 looper letters, 129 selfloop transitions, 86 changer transitions 57/272 dead transitions. [2023-08-27 07:15:37,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 272 transitions, 2065 flow [2023-08-27 07:15:37,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 07:15:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 07:15:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3564 transitions. [2023-08-27 07:15:37,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2623674911660777 [2023-08-27 07:15:37,225 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3564 transitions. [2023-08-27 07:15:37,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3564 transitions. [2023-08-27 07:15:37,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:15:37,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3564 transitions. [2023-08-27 07:15:37,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 222.75) internal successors, (3564), 16 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:15:37,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 849.0) internal successors, (14433), 17 states have internal predecessors, (14433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:15:37,396 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 849.0) internal successors, (14433), 17 states have internal predecessors, (14433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:15:37,396 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 776 flow. Second operand 16 states and 3564 transitions. [2023-08-27 07:15:37,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 272 transitions, 2065 flow [2023-08-27 07:15:37,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 272 transitions, 1958 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-08-27 07:15:37,461 INFO L231 Difference]: Finished difference. Result has 107 places, 140 transitions, 1286 flow [2023-08-27 07:15:37,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1286, PETRI_PLACES=107, PETRI_TRANSITIONS=140} [2023-08-27 07:15:37,462 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 37 predicate places. [2023-08-27 07:15:37,462 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 140 transitions, 1286 flow [2023-08-27 07:15:37,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 215.88235294117646) internal successors, (3670), 17 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:15:37,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:15:37,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:15:37,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 07:15:37,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:15:37,663 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-27 07:15:37,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:15:37,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2015604043, now seen corresponding path program 1 times [2023-08-27 07:15:37,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:15:37,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700936069] [2023-08-27 07:15:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:15:37,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:15:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:15:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:15:40,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:15:40,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700936069] [2023-08-27 07:15:40,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700936069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:15:40,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101697120] [2023-08-27 07:15:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:15:40,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:15:40,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:15:40,205 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:15:40,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 07:15:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:15:40,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 07:15:40,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:15:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:15:41,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:15:45,147 INFO L322 Elim1Store]: treesize reduction 236, result has 69.3 percent of original size [2023-08-27 07:15:45,148 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 1412 treesize of output 1687 Received shutdown request... [2023-08-27 07:26:18,548 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 07:26:18,550 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 07:26:18,553 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 07:26:18,554 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONASSERT (60 of 61 remaining) [2023-08-27 07:26:18,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 07:26:18,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-27 07:26:18,755 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. [2023-08-27 07:26:18,757 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 61 remaining) [2023-08-27 07:26:18,757 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 61 remaining) [2023-08-27 07:26:18,757 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 61 remaining) [2023-08-27 07:26:18,757 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 61 remaining) [2023-08-27 07:26:18,757 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 61 remaining) [2023-08-27 07:26:18,757 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 61 remaining) [2023-08-27 07:26:18,757 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 61 remaining) [2023-08-27 07:26:18,757 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 61 remaining) [2023-08-27 07:26:18,758 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 61 remaining) [2023-08-27 07:26:18,758 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 61 remaining) [2023-08-27 07:26:18,758 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 61 remaining) [2023-08-27 07:26:18,758 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 61 remaining) [2023-08-27 07:26:18,758 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 61 remaining) [2023-08-27 07:26:18,758 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 61 remaining) [2023-08-27 07:26:18,758 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 61 remaining) [2023-08-27 07:26:18,758 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 61 remaining) [2023-08-27 07:26:18,758 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 61 remaining) [2023-08-27 07:26:18,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 61 remaining) [2023-08-27 07:26:18,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 61 remaining) [2023-08-27 07:26:18,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 61 remaining) [2023-08-27 07:26:18,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 61 remaining) [2023-08-27 07:26:18,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 61 remaining) [2023-08-27 07:26:18,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 61 remaining) [2023-08-27 07:26:18,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 61 remaining) [2023-08-27 07:26:18,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 61 remaining) [2023-08-27 07:26:18,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 61 remaining) [2023-08-27 07:26:18,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 61 remaining) [2023-08-27 07:26:18,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 61 remaining) [2023-08-27 07:26:18,760 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 61 remaining) [2023-08-27 07:26:18,760 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 61 remaining) [2023-08-27 07:26:18,760 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 61 remaining) [2023-08-27 07:26:18,760 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 61 remaining) [2023-08-27 07:26:18,760 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 61 remaining) [2023-08-27 07:26:18,760 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 61 remaining) [2023-08-27 07:26:18,760 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 61 remaining) [2023-08-27 07:26:18,760 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 61 remaining) [2023-08-27 07:26:18,760 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 61 remaining) [2023-08-27 07:26:18,760 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 61 remaining) [2023-08-27 07:26:18,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 61 remaining) [2023-08-27 07:26:18,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 61 remaining) [2023-08-27 07:26:18,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 61 remaining) [2023-08-27 07:26:18,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 61 remaining) [2023-08-27 07:26:18,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 61 remaining) [2023-08-27 07:26:18,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 61 remaining) [2023-08-27 07:26:18,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 61 remaining) [2023-08-27 07:26:18,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 61 remaining) [2023-08-27 07:26:18,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 61 remaining) [2023-08-27 07:26:18,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 61 remaining) [2023-08-27 07:26:18,761 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 61 remaining) [2023-08-27 07:26:18,762 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 61 remaining) [2023-08-27 07:26:18,762 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 61 remaining) [2023-08-27 07:26:18,762 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 61 remaining) [2023-08-27 07:26:18,762 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 61 remaining) [2023-08-27 07:26:18,762 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 61 remaining) [2023-08-27 07:26:18,762 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 61 remaining) [2023-08-27 07:26:18,762 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 61 remaining) [2023-08-27 07:26:18,762 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 61 remaining) [2023-08-27 07:26:18,762 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 61 remaining) [2023-08-27 07:26:18,762 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 61 remaining) [2023-08-27 07:26:18,763 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 61 remaining) [2023-08-27 07:26:18,763 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:26:18,767 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 07:26:18,767 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 07:26:18,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:26:18 BasicIcfg [2023-08-27 07:26:18,769 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 07:26:18,770 INFO L158 Benchmark]: Toolchain (without parser) took 819500.18ms. Allocated memory was 327.2MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 303.2MB in the beginning and 2.1GB in the end (delta: -1.7GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2023-08-27 07:26:18,770 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 327.2MB. Free memory is still 304.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 07:26:18,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.80ms. Allocated memory is still 327.2MB. Free memory was 303.2MB in the beginning and 289.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 07:26:18,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.41ms. Allocated memory is still 327.2MB. Free memory was 289.6MB in the beginning and 286.1MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 07:26:18,771 INFO L158 Benchmark]: Boogie Preprocessor took 64.60ms. Allocated memory is still 327.2MB. Free memory was 286.1MB in the beginning and 283.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 07:26:18,771 INFO L158 Benchmark]: RCFGBuilder took 1014.32ms. Allocated memory is still 327.2MB. Free memory was 283.3MB in the beginning and 248.3MB in the end (delta: 35.0MB). Peak memory consumption was 42.8MB. Max. memory is 16.0GB. [2023-08-27 07:26:18,771 INFO L158 Benchmark]: TraceAbstraction took 818004.05ms. Allocated memory was 327.2MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 248.3MB in the beginning and 2.1GB in the end (delta: -1.8GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. [2023-08-27 07:26:18,773 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 327.2MB. Free memory is still 304.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 341.80ms. Allocated memory is still 327.2MB. Free memory was 303.2MB in the beginning and 289.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 70.41ms. Allocated memory is still 327.2MB. Free memory was 289.6MB in the beginning and 286.1MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 64.60ms. Allocated memory is still 327.2MB. Free memory was 286.1MB in the beginning and 283.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 1014.32ms. Allocated memory is still 327.2MB. Free memory was 283.3MB in the beginning and 248.3MB in the end (delta: 35.0MB). Peak memory consumption was 42.8MB. Max. memory is 16.0GB. * TraceAbstraction took 818004.05ms. Allocated memory was 327.2MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 248.3MB in the beginning and 2.1GB in the end (delta: -1.8GB). Peak memory consumption was 3.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.5s, 353 PlacesBefore, 70 PlacesAfterwards, 377 TransitionsBefore, 65 TransitionsAfterwards, 9264 CoEnabledTransitionPairs, 7 FixpointIterations, 243 TrivialSequentialCompositions, 128 ConcurrentSequentialCompositions, 42 TrivialYvCompositions, 13 ConcurrentYvCompositions, 29 ChoiceCompositions, 455 TotalNumberOfCompositions, 11507 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10992, independent: 10972, independent conditional: 0, independent unconditional: 10972, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4444, independent: 4434, independent conditional: 0, independent unconditional: 4434, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10992, independent: 6538, independent conditional: 0, independent unconditional: 6538, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 4444, unknown conditional: 0, unknown unconditional: 4444] , Statistics on independence cache: Total cache size (in pairs): 239, Positive cache size: 235, Positive conditional cache size: 0, Positive unconditional cache size: 235, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 216]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 197]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 32 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 57ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 438 locations, 61 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 817.9s, OverallIterations: 34, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 69.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1890 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1890 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 253 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4467 IncrementalHoareTripleChecker+Invalid, 4720 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 253 mSolverCounterUnsat, 0 mSDtfsCounter, 4467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 725 GetRequests, 538 SyntacticMatches, 1 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1286occurred in iteration=33, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 82.5s InterpolantComputationTime, 922 NumberOfCodeBlocks, 918 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 1097 ConstructedInterpolants, 21 QuantifiedInterpolants, 17524 SizeOfPredicates, 365 NumberOfNonLiveVariables, 6819 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 61 InterpolantComputations, 24 PerfectInterpolantSequences, 113/183 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown