./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:44:06,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:44:06,585 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:44:06,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:44:06,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:44:06,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:44:06,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:44:06,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:44:06,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:44:06,618 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:44:06,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:44:06,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:44:06,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:44:06,620 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:44:06,621 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:44:06,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:44:06,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:44:06,622 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:44:06,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:44:06,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:44:06,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:44:06,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:44:06,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:44:06,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:44:06,625 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:44:06,625 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:44:06,625 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:44:06,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:44:06,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:44:06,626 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:44:06,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:44:06,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:44:06,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:44:06,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:44:06,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:44:06,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:44:06,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:44:06,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:44:06,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:44:06,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:44:06,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:44:06,629 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:44:06,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:44:06,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:44:06,630 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c [2024-11-12 20:44:06,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:44:06,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:44:06,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:44:06,854 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:44:06,854 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:44:06,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-11-12 20:44:08,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:44:08,219 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:44:08,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-11-12 20:44:08,226 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/545ef2803/da42f9ed6f4641209fd2d384f6333ff5/FLAGdca872540 [2024-11-12 20:44:08,644 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/545ef2803/da42f9ed6f4641209fd2d384f6333ff5 [2024-11-12 20:44:08,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:44:08,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:44:08,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:44:08,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:44:08,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:44:08,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51bcb8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08, skipping insertion in model container [2024-11-12 20:44:08,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,671 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:44:08,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:44:08,834 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:44:08,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:44:08,867 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:44:08,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08 WrapperNode [2024-11-12 20:44:08,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:44:08,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:44:08,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:44:08,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:44:08,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,899 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-11-12 20:44:08,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:44:08,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:44:08,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:44:08,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:44:08,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,929 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,940 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 20:44:08,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,972 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:44:08,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:44:08,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:44:08,976 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:44:08,977 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (1/1) ... [2024-11-12 20:44:08,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:44:09,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:09,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 20:44:09,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 20:44:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:44:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:44:09,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:44:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:44:09,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:44:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:44:09,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:44:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:44:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:44:09,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:44:09,057 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:44:09,137 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:44:09,140 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:44:09,321 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:44:09,322 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:44:09,421 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:44:09,421 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:44:09,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:44:09 BoogieIcfgContainer [2024-11-12 20:44:09,421 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:44:09,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:44:09,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:44:09,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:44:09,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:44:08" (1/3) ... [2024-11-12 20:44:09,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334cddaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:44:09, skipping insertion in model container [2024-11-12 20:44:09,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:44:08" (2/3) ... [2024-11-12 20:44:09,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334cddaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:44:09, skipping insertion in model container [2024-11-12 20:44:09,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:44:09" (3/3) ... [2024-11-12 20:44:09,430 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2024-11-12 20:44:09,443 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:44:09,443 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-12 20:44:09,444 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:44:09,490 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 20:44:09,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-11-12 20:44:09,548 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-11-12 20:44:09,550 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 20:44:09,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 124 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-12 20:44:09,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-11-12 20:44:09,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 41 transitions, 94 flow [2024-11-12 20:44:09,561 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:44:09,567 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@7131d85e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:44:09,567 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-12 20:44:09,575 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:44:09,576 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-11-12 20:44:09,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:44:09,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:09,577 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:09,578 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:44:09,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:09,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1898955499, now seen corresponding path program 1 times [2024-11-12 20:44:09,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:09,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517729974] [2024-11-12 20:44:09,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:09,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:09,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:09,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517729974] [2024-11-12 20:44:09,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517729974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:09,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:09,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:44:09,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79865719] [2024-11-12 20:44:09,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:09,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:09,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:09,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:09,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:09,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-12 20:44:09,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:09,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:09,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-12 20:44:09,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:10,112 INFO L124 PetriNetUnfolderBase]: 1427/2351 cut-off events. [2024-11-12 20:44:10,112 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-12 20:44:10,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 2351 events. 1427/2351 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 14678 event pairs, 366 based on Foata normal form. 0/1476 useless extension candidates. Maximal degree in co-relation 4309. Up to 1112 conditions per place. [2024-11-12 20:44:10,132 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 34 selfloop transitions, 9 changer transitions 0/58 dead transitions. [2024-11-12 20:44:10,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 223 flow [2024-11-12 20:44:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-12 20:44:10,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-11-12 20:44:10,144 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 94 flow. Second operand 3 states and 101 transitions. [2024-11-12 20:44:10,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 223 flow [2024-11-12 20:44:10,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 213 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:44:10,153 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 156 flow [2024-11-12 20:44:10,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-11-12 20:44:10,159 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2024-11-12 20:44:10,162 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 156 flow [2024-11-12 20:44:10,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:10,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:10,163 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:10,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:44:10,163 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:44:10,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:10,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1898955500, now seen corresponding path program 1 times [2024-11-12 20:44:10,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:10,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955583958] [2024-11-12 20:44:10,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:10,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:10,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:10,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955583958] [2024-11-12 20:44:10,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955583958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:10,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:10,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:44:10,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470400774] [2024-11-12 20:44:10,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:10,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:10,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:10,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:10,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:10,254 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-12 20:44:10,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:10,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:10,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-12 20:44:10,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:10,540 INFO L124 PetriNetUnfolderBase]: 2294/3620 cut-off events. [2024-11-12 20:44:10,541 INFO L125 PetriNetUnfolderBase]: For 2327/2327 co-relation queries the response was YES. [2024-11-12 20:44:10,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8671 conditions, 3620 events. 2294/3620 cut-off events. For 2327/2327 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 20958 event pairs, 366 based on Foata normal form. 222/3345 useless extension candidates. Maximal degree in co-relation 5778. Up to 1903 conditions per place. [2024-11-12 20:44:10,563 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 42 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-11-12 20:44:10,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 321 flow [2024-11-12 20:44:10,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-12 20:44:10,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-11-12 20:44:10,567 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 156 flow. Second operand 3 states and 101 transitions. [2024-11-12 20:44:10,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 321 flow [2024-11-12 20:44:10,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:44:10,581 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 222 flow [2024-11-12 20:44:10,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2024-11-12 20:44:10,582 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-12 20:44:10,582 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 222 flow [2024-11-12 20:44:10,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:10,582 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:10,583 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:10,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:44:10,583 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:44:10,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:10,584 INFO L85 PathProgramCache]: Analyzing trace with hash 485749625, now seen corresponding path program 1 times [2024-11-12 20:44:10,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:10,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562228048] [2024-11-12 20:44:10,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:10,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:10,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:10,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562228048] [2024-11-12 20:44:10,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562228048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:10,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:10,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:44:10,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565175207] [2024-11-12 20:44:10,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:10,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:10,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:10,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:10,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:10,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-12 20:44:10,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:10,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:10,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-12 20:44:10,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:10,910 INFO L124 PetriNetUnfolderBase]: 2661/4080 cut-off events. [2024-11-12 20:44:10,911 INFO L125 PetriNetUnfolderBase]: For 3833/4463 co-relation queries the response was YES. [2024-11-12 20:44:10,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11335 conditions, 4080 events. 2661/4080 cut-off events. For 3833/4463 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 24067 event pairs, 747 based on Foata normal form. 0/3676 useless extension candidates. Maximal degree in co-relation 9334. Up to 1838 conditions per place. [2024-11-12 20:44:10,932 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 60 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-11-12 20:44:10,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 445 flow [2024-11-12 20:44:10,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:10,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-12 20:44:10,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-12 20:44:10,936 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 222 flow. Second operand 3 states and 94 transitions. [2024-11-12 20:44:10,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 445 flow [2024-11-12 20:44:10,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:44:10,942 INFO L231 Difference]: Finished difference. Result has 51 places, 55 transitions, 226 flow [2024-11-12 20:44:10,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=51, PETRI_TRANSITIONS=55} [2024-11-12 20:44:10,944 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2024-11-12 20:44:10,944 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 226 flow [2024-11-12 20:44:10,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:10,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:10,944 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:10,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:44:10,945 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:44:10,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:10,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1524071286, now seen corresponding path program 1 times [2024-11-12 20:44:10,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:10,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636663306] [2024-11-12 20:44:10,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:10,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:11,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:11,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636663306] [2024-11-12 20:44:11,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636663306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:11,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976320149] [2024-11-12 20:44:11,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:11,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:11,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:11,024 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) [2024-11-12 20:44:11,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:44:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:11,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:44:11,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:11,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:44:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:11,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976320149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:44:11,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:44:11,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-12 20:44:11,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600119615] [2024-11-12 20:44:11,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:44:11,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:44:11,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:11,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:44:11,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:44:11,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-12 20:44:11,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:11,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:11,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-12 20:44:11,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:11,680 INFO L124 PetriNetUnfolderBase]: 4322/7382 cut-off events. [2024-11-12 20:44:11,681 INFO L125 PetriNetUnfolderBase]: For 5320/5320 co-relation queries the response was YES. [2024-11-12 20:44:11,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19446 conditions, 7382 events. 4322/7382 cut-off events. For 5320/5320 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 49210 event pairs, 161 based on Foata normal form. 272/7110 useless extension candidates. Maximal degree in co-relation 17616. Up to 2053 conditions per place. [2024-11-12 20:44:11,717 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 86 selfloop transitions, 40 changer transitions 0/143 dead transitions. [2024-11-12 20:44:11,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 143 transitions, 801 flow [2024-11-12 20:44:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:44:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:44:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-11-12 20:44:11,719 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7537993920972644 [2024-11-12 20:44:11,719 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 226 flow. Second operand 7 states and 248 transitions. [2024-11-12 20:44:11,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 143 transitions, 801 flow [2024-11-12 20:44:11,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 143 transitions, 795 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:44:11,723 INFO L231 Difference]: Finished difference. Result has 59 places, 91 transitions, 620 flow [2024-11-12 20:44:11,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=620, PETRI_PLACES=59, PETRI_TRANSITIONS=91} [2024-11-12 20:44:11,724 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2024-11-12 20:44:11,724 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 91 transitions, 620 flow [2024-11-12 20:44:11,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:11,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:11,725 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:11,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:44:11,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:11,925 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:44:11,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash 994141205, now seen corresponding path program 1 times [2024-11-12 20:44:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:11,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836715245] [2024-11-12 20:44:11,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:11,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:11,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836715245] [2024-11-12 20:44:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836715245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:44:11,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:44:11,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:44:11,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820015860] [2024-11-12 20:44:11,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:44:11,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:44:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:44:11,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:44:11,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-12 20:44:11,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 91 transitions, 620 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:11,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:11,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-12 20:44:11,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:12,533 INFO L124 PetriNetUnfolderBase]: 5708/8921 cut-off events. [2024-11-12 20:44:12,535 INFO L125 PetriNetUnfolderBase]: For 23783/23819 co-relation queries the response was YES. [2024-11-12 20:44:12,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30051 conditions, 8921 events. 5708/8921 cut-off events. For 23783/23819 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 58777 event pairs, 1597 based on Foata normal form. 0/8134 useless extension candidates. Maximal degree in co-relation 14092. Up to 4064 conditions per place. [2024-11-12 20:44:12,591 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 104 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-12 20:44:12,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 122 transitions, 1057 flow [2024-11-12 20:44:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:44:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:44:12,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-12 20:44:12,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2024-11-12 20:44:12,593 INFO L175 Difference]: Start difference. First operand has 59 places, 91 transitions, 620 flow. Second operand 3 states and 92 transitions. [2024-11-12 20:44:12,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 122 transitions, 1057 flow [2024-11-12 20:44:12,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 122 transitions, 1045 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-12 20:44:12,619 INFO L231 Difference]: Finished difference. Result has 63 places, 88 transitions, 593 flow [2024-11-12 20:44:12,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=63, PETRI_TRANSITIONS=88} [2024-11-12 20:44:12,620 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2024-11-12 20:44:12,620 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 88 transitions, 593 flow [2024-11-12 20:44:12,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:12,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:12,621 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:12,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:44:12,621 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:44:12,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:12,622 INFO L85 PathProgramCache]: Analyzing trace with hash 473343122, now seen corresponding path program 1 times [2024-11-12 20:44:12,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:12,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644003584] [2024-11-12 20:44:12,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:12,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:44:12,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:12,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644003584] [2024-11-12 20:44:12,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644003584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:12,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102577817] [2024-11-12 20:44:12,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:12,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:12,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:12,725 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) [2024-11-12 20:44:12,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:44:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:12,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 20:44:12,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:44:12,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:44:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:44:12,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102577817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:44:12,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:44:12,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-11-12 20:44:12,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080322255] [2024-11-12 20:44:12,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:44:12,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:44:12,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:12,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:44:12,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:44:12,892 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-12 20:44:12,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 88 transitions, 593 flow. Second operand has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:12,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:12,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-12 20:44:12,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:13,785 INFO L124 PetriNetUnfolderBase]: 6006/11446 cut-off events. [2024-11-12 20:44:13,785 INFO L125 PetriNetUnfolderBase]: For 45761/45761 co-relation queries the response was YES. [2024-11-12 20:44:13,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37206 conditions, 11446 events. 6006/11446 cut-off events. For 45761/45761 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 92578 event pairs, 396 based on Foata normal form. 1644/12458 useless extension candidates. Maximal degree in co-relation 25392. Up to 3246 conditions per place. [2024-11-12 20:44:13,848 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 76 selfloop transitions, 50 changer transitions 0/145 dead transitions. [2024-11-12 20:44:13,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 145 transitions, 1176 flow [2024-11-12 20:44:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:44:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:44:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-11-12 20:44:13,850 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6196808510638298 [2024-11-12 20:44:13,851 INFO L175 Difference]: Start difference. First operand has 63 places, 88 transitions, 593 flow. Second operand 8 states and 233 transitions. [2024-11-12 20:44:13,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 145 transitions, 1176 flow [2024-11-12 20:44:13,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 145 transitions, 1170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:44:13,883 INFO L231 Difference]: Finished difference. Result has 70 places, 108 transitions, 1038 flow [2024-11-12 20:44:13,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1038, PETRI_PLACES=70, PETRI_TRANSITIONS=108} [2024-11-12 20:44:13,884 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2024-11-12 20:44:13,884 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 108 transitions, 1038 flow [2024-11-12 20:44:13,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:13,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:13,885 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:13,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 20:44:14,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-12 20:44:14,086 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:44:14,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:14,086 INFO L85 PathProgramCache]: Analyzing trace with hash 679446776, now seen corresponding path program 1 times [2024-11-12 20:44:14,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:14,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147857581] [2024-11-12 20:44:14,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:14,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:14,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:14,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147857581] [2024-11-12 20:44:14,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147857581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:14,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461976989] [2024-11-12 20:44:14,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:14,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:14,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:14,221 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) [2024-11-12 20:44:14,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:44:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:14,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 20:44:14,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:14,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:44:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:14,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461976989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:44:14,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:44:14,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-12 20:44:14,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381077872] [2024-11-12 20:44:14,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:44:14,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:44:14,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:14,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:44:14,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:44:14,374 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-12 20:44:14,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 108 transitions, 1038 flow. Second operand has 11 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:14,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:14,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-12 20:44:14,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:16,932 INFO L124 PetriNetUnfolderBase]: 16375/32435 cut-off events. [2024-11-12 20:44:16,933 INFO L125 PetriNetUnfolderBase]: For 246112/246112 co-relation queries the response was YES. [2024-11-12 20:44:17,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115452 conditions, 32435 events. 16375/32435 cut-off events. For 246112/246112 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 304445 event pairs, 347 based on Foata normal form. 4100/34173 useless extension candidates. Maximal degree in co-relation 105862. Up to 5242 conditions per place. [2024-11-12 20:44:17,195 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 182 selfloop transitions, 162 changer transitions 0/363 dead transitions. [2024-11-12 20:44:17,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 363 transitions, 3886 flow [2024-11-12 20:44:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 20:44:17,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 20:44:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 385 transitions. [2024-11-12 20:44:17,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7446808510638298 [2024-11-12 20:44:17,198 INFO L175 Difference]: Start difference. First operand has 70 places, 108 transitions, 1038 flow. Second operand 11 states and 385 transitions. [2024-11-12 20:44:17,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 363 transitions, 3886 flow [2024-11-12 20:44:17,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 363 transitions, 3695 flow, removed 93 selfloop flow, removed 3 redundant places. [2024-11-12 20:44:17,702 INFO L231 Difference]: Finished difference. Result has 85 places, 246 transitions, 3340 flow [2024-11-12 20:44:17,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3340, PETRI_PLACES=85, PETRI_TRANSITIONS=246} [2024-11-12 20:44:17,703 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2024-11-12 20:44:17,703 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 246 transitions, 3340 flow [2024-11-12 20:44:17,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:17,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:17,703 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:17,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:44:17,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:17,904 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:44:17,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:17,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1049049488, now seen corresponding path program 1 times [2024-11-12 20:44:17,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:17,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655020999] [2024-11-12 20:44:17,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:17,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:44:17,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:17,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655020999] [2024-11-12 20:44:17,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655020999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:17,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192760616] [2024-11-12 20:44:17,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:17,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:17,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:17,958 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) [2024-11-12 20:44:17,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:44:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:18,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:44:18,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:44:18,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:44:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:44:18,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192760616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:44:18,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:44:18,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 6 [2024-11-12 20:44:18,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638949900] [2024-11-12 20:44:18,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:44:18,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:44:18,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:44:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:44:18,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-12 20:44:18,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 246 transitions, 3340 flow. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:18,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:18,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-12 20:44:18,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:44:26,157 INFO L124 PetriNetUnfolderBase]: 42967/83805 cut-off events. [2024-11-12 20:44:26,158 INFO L125 PetriNetUnfolderBase]: For 820456/820456 co-relation queries the response was YES. [2024-11-12 20:44:26,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352315 conditions, 83805 events. 42967/83805 cut-off events. For 820456/820456 co-relation queries the response was YES. Maximal size of possible extension queue 2655. Compared 885391 event pairs, 1189 based on Foata normal form. 3574/80915 useless extension candidates. Maximal degree in co-relation 328460. Up to 20205 conditions per place. [2024-11-12 20:44:27,013 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 413 selfloop transitions, 320 changer transitions 0/752 dead transitions. [2024-11-12 20:44:27,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 752 transitions, 11783 flow [2024-11-12 20:44:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 20:44:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 20:44:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-11-12 20:44:27,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7173252279635258 [2024-11-12 20:44:27,015 INFO L175 Difference]: Start difference. First operand has 85 places, 246 transitions, 3340 flow. Second operand 7 states and 236 transitions. [2024-11-12 20:44:27,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 752 transitions, 11783 flow [2024-11-12 20:44:31,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 752 transitions, 11252 flow, removed 263 selfloop flow, removed 1 redundant places. [2024-11-12 20:44:31,415 INFO L231 Difference]: Finished difference. Result has 94 places, 541 transitions, 9411 flow [2024-11-12 20:44:31,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9411, PETRI_PLACES=94, PETRI_TRANSITIONS=541} [2024-11-12 20:44:31,415 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2024-11-12 20:44:31,416 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 541 transitions, 9411 flow [2024-11-12 20:44:31,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:31,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:44:31,416 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:44:31,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:44:31,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:31,617 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-12 20:44:31,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:44:31,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1347085772, now seen corresponding path program 1 times [2024-11-12 20:44:31,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:44:31,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540125035] [2024-11-12 20:44:31,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:31,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:44:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:44:31,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:44:31,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540125035] [2024-11-12 20:44:31,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540125035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:44:31,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85994546] [2024-11-12 20:44:31,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:44:31,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:44:31,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:44:31,725 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) [2024-11-12 20:44:31,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:44:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:44:31,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 20:44:31,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:44:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:44:31,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:44:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:44:31,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85994546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:44:31,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:44:31,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2024-11-12 20:44:31,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614219595] [2024-11-12 20:44:31,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:44:31,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:44:31,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:44:31,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:44:31,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:44:31,896 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-12 20:44:31,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 541 transitions, 9411 flow. Second operand has 11 states, 11 states have (on average 19.818181818181817) internal successors, (218), 11 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:44:31,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:44:31,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-12 20:44:31,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand