./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.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 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:51:35,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:51:35,614 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:51:35,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:51:35,620 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:51:35,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:51:35,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:51:35,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:51:35,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:51:35,643 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:51:35,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:51:35,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:51:35,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:51:35,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:51:35,645 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:51:35,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:51:35,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:51:35,645 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:51:35,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:51:35,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:51:35,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:51:35,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:51:35,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:51:35,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:51:35,651 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:51:35,651 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:51:35,651 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:51:35,652 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:51:35,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:51:35,652 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:51:35,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:51:35,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:51:35,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:51:35,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:51:35,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:51:35,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:51:35,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:51:35,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:51:35,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:51:35,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:51:35,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:51:35,654 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:51:35,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:51:35,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:51:35,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-10-13 16:51:35,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:51:35,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:51:35,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:51:35,859 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:51:35,859 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:51:35,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-10-13 16:51:37,058 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:51:37,206 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:51:37,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-10-13 16:51:37,213 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fecd394d3/8f563090816c41009ec03c2690119ee4/FLAG56fedf54e [2024-10-13 16:51:37,614 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fecd394d3/8f563090816c41009ec03c2690119ee4 [2024-10-13 16:51:37,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:51:37,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:51:37,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:51:37,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:51:37,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:51:37,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3edae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37, skipping insertion in model container [2024-10-13 16:51:37,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,640 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:51:37,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:51:37,784 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:51:37,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:51:37,809 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:51:37,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37 WrapperNode [2024-10-13 16:51:37,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:51:37,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:51:37,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:51:37,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:51:37,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,832 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2024-10-13 16:51:37,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:51:37,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:51:37,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:51:37,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:51:37,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,851 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]. [2024-10-13 16:51:37,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:51:37,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:51:37,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:51:37,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:51:37,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (1/1) ... [2024-10-13 16:51:37,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:51:37,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:37,890 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) [2024-10-13 16:51:37,892 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 [2024-10-13 16:51:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:51:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:51:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:51:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:51:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:51:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:51:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:51:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:51:37,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:51:37,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:51:37,926 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:51:38,009 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:51:38,011 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:51:38,170 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:51:38,170 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:51:38,295 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:51:38,295 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 16:51:38,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:51:38 BoogieIcfgContainer [2024-10-13 16:51:38,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:51:38,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:51:38,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:51:38,299 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:51:38,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:51:37" (1/3) ... [2024-10-13 16:51:38,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328de5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:51:38, skipping insertion in model container [2024-10-13 16:51:38,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:51:37" (2/3) ... [2024-10-13 16:51:38,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328de5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:51:38, skipping insertion in model container [2024-10-13 16:51:38,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:51:38" (3/3) ... [2024-10-13 16:51:38,302 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-10-13 16:51:38,323 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:51:38,323 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-13 16:51:38,324 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:51:38,357 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:51:38,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-10-13 16:51:38,402 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-10-13 16:51:38,403 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:51:38,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 65 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-10-13 16:51:38,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-10-13 16:51:38,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 29 transitions, 70 flow [2024-10-13 16:51:38,414 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:51:38,418 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;@2274fcb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:51:38,419 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-13 16:51:38,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:51:38,426 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-13 16:51:38,426 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:51:38,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:38,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:51:38,427 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:38,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:38,430 INFO L85 PathProgramCache]: Analyzing trace with hash 278512112, now seen corresponding path program 1 times [2024-10-13 16:51:38,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:38,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428610807] [2024-10-13 16:51:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:38,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:38,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:38,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428610807] [2024-10-13 16:51:38,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428610807] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:38,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:38,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:51:38,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138733533] [2024-10-13 16:51:38,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:38,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:51:38,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:38,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:51:38,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:51:38,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:38,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:38,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:38,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:38,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:38,763 INFO L124 PetriNetUnfolderBase]: 143/299 cut-off events. [2024-10-13 16:51:38,763 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 16:51:38,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 299 events. 143/299 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1252 event pairs, 49 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 514. Up to 192 conditions per place. [2024-10-13 16:51:38,768 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 27 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2024-10-13 16:51:38,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 155 flow [2024-10-13 16:51:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:51:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:51:38,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-10-13 16:51:38,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-13 16:51:38,779 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 70 flow. Second operand 3 states and 69 transitions. [2024-10-13 16:51:38,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 155 flow [2024-10-13 16:51:38,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:51:38,784 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 80 flow [2024-10-13 16:51:38,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-10-13 16:51:38,787 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-10-13 16:51:38,787 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 80 flow [2024-10-13 16:51:38,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:38,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:38,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:38,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:51:38,789 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:38,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:38,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1362177907, now seen corresponding path program 1 times [2024-10-13 16:51:38,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:38,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790444347] [2024-10-13 16:51:38,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:38,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:38,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:38,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790444347] [2024-10-13 16:51:38,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790444347] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:38,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:38,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:51:38,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558557974] [2024-10-13 16:51:38,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:38,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:38,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:38,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:51:38,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-13 16:51:38,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:38,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:38,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-13 16:51:38,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:39,030 INFO L124 PetriNetUnfolderBase]: 243/471 cut-off events. [2024-10-13 16:51:39,031 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-13 16:51:39,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 471 events. 243/471 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2245 event pairs, 111 based on Foata normal form. 14/388 useless extension candidates. Maximal degree in co-relation 528. Up to 339 conditions per place. [2024-10-13 16:51:39,036 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 40 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-10-13 16:51:39,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 224 flow [2024-10-13 16:51:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:39,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-13 16:51:39,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-13 16:51:39,039 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 80 flow. Second operand 4 states and 78 transitions. [2024-10-13 16:51:39,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 224 flow [2024-10-13 16:51:39,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:51:39,042 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 107 flow [2024-10-13 16:51:39,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-10-13 16:51:39,043 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-10-13 16:51:39,043 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 107 flow [2024-10-13 16:51:39,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:39,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:39,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:39,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:51:39,044 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:39,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:39,044 INFO L85 PathProgramCache]: Analyzing trace with hash -351004553, now seen corresponding path program 1 times [2024-10-13 16:51:39,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:39,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135810974] [2024-10-13 16:51:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:39,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:39,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:39,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135810974] [2024-10-13 16:51:39,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135810974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:39,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:39,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:51:39,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371909611] [2024-10-13 16:51:39,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:39,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:39,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:39,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:39,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:51:39,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:39,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:39,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:39,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:39,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:39,225 INFO L124 PetriNetUnfolderBase]: 213/476 cut-off events. [2024-10-13 16:51:39,226 INFO L125 PetriNetUnfolderBase]: For 118/122 co-relation queries the response was YES. [2024-10-13 16:51:39,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 476 events. 213/476 cut-off events. For 118/122 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2282 event pairs, 51 based on Foata normal form. 4/400 useless extension candidates. Maximal degree in co-relation 365. Up to 162 conditions per place. [2024-10-13 16:51:39,231 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 40 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-10-13 16:51:39,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 276 flow [2024-10-13 16:51:39,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-10-13 16:51:39,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-13 16:51:39,234 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 107 flow. Second operand 4 states and 92 transitions. [2024-10-13 16:51:39,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 57 transitions, 276 flow [2024-10-13 16:51:39,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:51:39,235 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 168 flow [2024-10-13 16:51:39,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-10-13 16:51:39,237 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2024-10-13 16:51:39,237 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 168 flow [2024-10-13 16:51:39,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:39,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:39,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:39,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:51:39,238 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:39,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1346266202, now seen corresponding path program 1 times [2024-10-13 16:51:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:39,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578735279] [2024-10-13 16:51:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:39,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:39,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:39,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578735279] [2024-10-13 16:51:39,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578735279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:39,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:39,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:51:39,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846218997] [2024-10-13 16:51:39,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:39,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:51:39,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:39,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:51:39,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:51:39,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:39,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:39,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:39,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:39,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:39,369 INFO L124 PetriNetUnfolderBase]: 303/614 cut-off events. [2024-10-13 16:51:39,369 INFO L125 PetriNetUnfolderBase]: For 783/828 co-relation queries the response was YES. [2024-10-13 16:51:39,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 614 events. 303/614 cut-off events. For 783/828 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3213 event pairs, 158 based on Foata normal form. 22/578 useless extension candidates. Maximal degree in co-relation 881. Up to 380 conditions per place. [2024-10-13 16:51:39,373 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 42 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-10-13 16:51:39,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 340 flow [2024-10-13 16:51:39,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:51:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:51:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-10-13 16:51:39,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-13 16:51:39,375 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 168 flow. Second operand 3 states and 66 transitions. [2024-10-13 16:51:39,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 340 flow [2024-10-13 16:51:39,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:51:39,379 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 186 flow [2024-10-13 16:51:39,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2024-10-13 16:51:39,380 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2024-10-13 16:51:39,380 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 186 flow [2024-10-13 16:51:39,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:39,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:39,381 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:39,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:51:39,381 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:39,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:39,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1791318402, now seen corresponding path program 1 times [2024-10-13 16:51:39,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:39,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591208189] [2024-10-13 16:51:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:39,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:39,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:39,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591208189] [2024-10-13 16:51:39,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591208189] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:39,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503630135] [2024-10-13 16:51:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:39,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:39,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:39,434 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) [2024-10-13 16:51:39,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:51:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:39,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:51:39,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:39,527 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:51:39,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503630135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:39,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:51:39,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-13 16:51:39,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154554945] [2024-10-13 16:51:39,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:39,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:39,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:39,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:39,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:51:39,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:39,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:39,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:39,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:39,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:39,647 INFO L124 PetriNetUnfolderBase]: 359/791 cut-off events. [2024-10-13 16:51:39,647 INFO L125 PetriNetUnfolderBase]: For 1176/1190 co-relation queries the response was YES. [2024-10-13 16:51:39,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 791 events. 359/791 cut-off events. For 1176/1190 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4236 event pairs, 82 based on Foata normal form. 56/777 useless extension candidates. Maximal degree in co-relation 983. Up to 330 conditions per place. [2024-10-13 16:51:39,652 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 33 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-10-13 16:51:39,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 367 flow [2024-10-13 16:51:39,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:39,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-10-13 16:51:39,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-10-13 16:51:39,655 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 186 flow. Second operand 4 states and 79 transitions. [2024-10-13 16:51:39,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 367 flow [2024-10-13 16:51:39,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 348 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-13 16:51:39,662 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 296 flow [2024-10-13 16:51:39,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-10-13 16:51:39,662 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2024-10-13 16:51:39,663 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 296 flow [2024-10-13 16:51:39,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:39,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:39,663 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:39,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:51:39,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:39,865 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:39,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash -711695819, now seen corresponding path program 1 times [2024-10-13 16:51:39,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:39,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396671970] [2024-10-13 16:51:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:39,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:39,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396671970] [2024-10-13 16:51:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396671970] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:39,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406338473] [2024-10-13 16:51:39,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:39,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:39,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:39,951 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) [2024-10-13 16:51:39,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:51:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:39,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:51:40,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:40,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:40,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406338473] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:40,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:40,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-13 16:51:40,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602768879] [2024-10-13 16:51:40,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:40,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:51:40,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:40,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:51:40,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:51:40,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:40,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:40,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:40,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:40,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:40,237 INFO L124 PetriNetUnfolderBase]: 313/684 cut-off events. [2024-10-13 16:51:40,237 INFO L125 PetriNetUnfolderBase]: For 1428/1452 co-relation queries the response was YES. [2024-10-13 16:51:40,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 684 events. 313/684 cut-off events. For 1428/1452 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3474 event pairs, 11 based on Foata normal form. 8/681 useless extension candidates. Maximal degree in co-relation 741. Up to 246 conditions per place. [2024-10-13 16:51:40,241 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 46 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2024-10-13 16:51:40,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 486 flow [2024-10-13 16:51:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:51:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:51:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-10-13 16:51:40,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-13 16:51:40,243 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 296 flow. Second operand 7 states and 128 transitions. [2024-10-13 16:51:40,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 486 flow [2024-10-13 16:51:40,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 469 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-13 16:51:40,245 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 285 flow [2024-10-13 16:51:40,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-10-13 16:51:40,246 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2024-10-13 16:51:40,246 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 285 flow [2024-10-13 16:51:40,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:40,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:40,246 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:40,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 16:51:40,447 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 [2024-10-13 16:51:40,447 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:40,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:40,448 INFO L85 PathProgramCache]: Analyzing trace with hash 26533655, now seen corresponding path program 1 times [2024-10-13 16:51:40,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:40,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273646634] [2024-10-13 16:51:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:40,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:40,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:40,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273646634] [2024-10-13 16:51:40,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273646634] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:40,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194088642] [2024-10-13 16:51:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:40,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:40,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:40,496 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) [2024-10-13 16:51:40,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:51:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:40,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:51:40,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:51:40,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:51:40,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194088642] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:40,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:40,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2024-10-13 16:51:40,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303850399] [2024-10-13 16:51:40,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:40,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 16:51:40,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 16:51:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-13 16:51:40,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-10-13 16:51:40,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 285 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:40,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:40,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-10-13 16:51:40,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:40,732 INFO L124 PetriNetUnfolderBase]: 480/993 cut-off events. [2024-10-13 16:51:40,732 INFO L125 PetriNetUnfolderBase]: For 1924/1966 co-relation queries the response was YES. [2024-10-13 16:51:40,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2895 conditions, 993 events. 480/993 cut-off events. For 1924/1966 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5382 event pairs, 60 based on Foata normal form. 55/937 useless extension candidates. Maximal degree in co-relation 1031. Up to 278 conditions per place. [2024-10-13 16:51:40,737 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 58 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-10-13 16:51:40,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 529 flow [2024-10-13 16:51:40,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:51:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:51:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-10-13 16:51:40,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5580357142857143 [2024-10-13 16:51:40,738 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 285 flow. Second operand 7 states and 125 transitions. [2024-10-13 16:51:40,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 529 flow [2024-10-13 16:51:40,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 477 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-10-13 16:51:40,741 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 237 flow [2024-10-13 16:51:40,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-10-13 16:51:40,741 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2024-10-13 16:51:40,741 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 237 flow [2024-10-13 16:51:40,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:40,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:40,741 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:40,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:51:40,945 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 [2024-10-13 16:51:40,946 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:40,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:40,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2046029116, now seen corresponding path program 1 times [2024-10-13 16:51:40,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:40,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949094006] [2024-10-13 16:51:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:40,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:41,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:41,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949094006] [2024-10-13 16:51:41,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949094006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:41,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:41,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:51:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120625858] [2024-10-13 16:51:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:41,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:41,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:41,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:41,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:51:41,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:41,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:41,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:41,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:41,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:41,082 INFO L124 PetriNetUnfolderBase]: 343/702 cut-off events. [2024-10-13 16:51:41,083 INFO L125 PetriNetUnfolderBase]: For 1501/1538 co-relation queries the response was YES. [2024-10-13 16:51:41,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2191 conditions, 702 events. 343/702 cut-off events. For 1501/1538 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3594 event pairs, 189 based on Foata normal form. 22/688 useless extension candidates. Maximal degree in co-relation 1029. Up to 521 conditions per place. [2024-10-13 16:51:41,087 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 38 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-10-13 16:51:41,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 387 flow [2024-10-13 16:51:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-10-13 16:51:41,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-10-13 16:51:41,089 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 237 flow. Second operand 4 states and 69 transitions. [2024-10-13 16:51:41,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 387 flow [2024-10-13 16:51:41,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 373 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-13 16:51:41,091 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 229 flow [2024-10-13 16:51:41,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-10-13 16:51:41,092 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2024-10-13 16:51:41,093 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 229 flow [2024-10-13 16:51:41,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:41,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:41,093 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:41,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:51:41,093 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:41,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:41,094 INFO L85 PathProgramCache]: Analyzing trace with hash -824890747, now seen corresponding path program 1 times [2024-10-13 16:51:41,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:41,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130502454] [2024-10-13 16:51:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:41,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:41,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130502454] [2024-10-13 16:51:41,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130502454] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:41,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510176042] [2024-10-13 16:51:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:41,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:41,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:41,139 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) [2024-10-13 16:51:41,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:51:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:41,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:51:41,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:41,203 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:51:41,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510176042] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:41,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:51:41,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 16:51:41,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88901792] [2024-10-13 16:51:41,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:41,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:51:41,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:41,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:51:41,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:51:41,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-13 16:51:41,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:41,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:41,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-13 16:51:41,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:41,343 INFO L124 PetriNetUnfolderBase]: 462/952 cut-off events. [2024-10-13 16:51:41,343 INFO L125 PetriNetUnfolderBase]: For 1701/1728 co-relation queries the response was YES. [2024-10-13 16:51:41,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2858 conditions, 952 events. 462/952 cut-off events. For 1701/1728 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5140 event pairs, 71 based on Foata normal form. 34/940 useless extension candidates. Maximal degree in co-relation 1327. Up to 313 conditions per place. [2024-10-13 16:51:41,349 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 68 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2024-10-13 16:51:41,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 633 flow [2024-10-13 16:51:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:51:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:51:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-10-13 16:51:41,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 16:51:41,350 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 229 flow. Second operand 6 states and 96 transitions. [2024-10-13 16:51:41,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 633 flow [2024-10-13 16:51:41,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 627 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:51:41,352 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 231 flow [2024-10-13 16:51:41,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-10-13 16:51:41,353 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2024-10-13 16:51:41,353 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 231 flow [2024-10-13 16:51:41,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:41,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:41,353 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:51:41,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:51:41,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:41,558 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:41,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:41,558 INFO L85 PathProgramCache]: Analyzing trace with hash 198190925, now seen corresponding path program 1 times [2024-10-13 16:51:41,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:41,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152474107] [2024-10-13 16:51:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:41,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:41,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:41,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152474107] [2024-10-13 16:51:41,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152474107] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:41,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962986639] [2024-10-13 16:51:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:41,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:41,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:41,589 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) [2024-10-13 16:51:41,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:51:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:41,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:51:41,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:41,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:41,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962986639] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:41,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:41,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:51:41,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113585041] [2024-10-13 16:51:41,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:41,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:51:41,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:41,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:51:41,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:51:41,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-13 16:51:41,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 231 flow. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:41,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:41,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-13 16:51:41,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:41,936 INFO L124 PetriNetUnfolderBase]: 1020/2019 cut-off events. [2024-10-13 16:51:41,936 INFO L125 PetriNetUnfolderBase]: For 4254/4311 co-relation queries the response was YES. [2024-10-13 16:51:41,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6404 conditions, 2019 events. 1020/2019 cut-off events. For 4254/4311 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11639 event pairs, 187 based on Foata normal form. 102/2107 useless extension candidates. Maximal degree in co-relation 2792. Up to 719 conditions per place. [2024-10-13 16:51:41,946 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 123 selfloop transitions, 12 changer transitions 0/142 dead transitions. [2024-10-13 16:51:41,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 142 transitions, 1159 flow [2024-10-13 16:51:41,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:51:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:51:41,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-10-13 16:51:41,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-10-13 16:51:41,948 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 231 flow. Second operand 10 states and 172 transitions. [2024-10-13 16:51:41,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 142 transitions, 1159 flow [2024-10-13 16:51:41,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 142 transitions, 1132 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-13 16:51:41,952 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 300 flow [2024-10-13 16:51:41,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=300, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-10-13 16:51:41,953 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2024-10-13 16:51:41,953 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 300 flow [2024-10-13 16:51:41,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:41,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:41,953 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:41,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:51:42,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 16:51:42,154 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:42,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:42,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1730354245, now seen corresponding path program 1 times [2024-10-13 16:51:42,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:42,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110084273] [2024-10-13 16:51:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:42,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:42,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:42,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110084273] [2024-10-13 16:51:42,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110084273] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:42,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861280008] [2024-10-13 16:51:42,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:42,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:42,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:42,184 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:42,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:51:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:42,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:51:42,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:42,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:42,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861280008] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:42,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:42,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-13 16:51:42,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001212362] [2024-10-13 16:51:42,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:42,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:51:42,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:42,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:51:42,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:51:42,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:42,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 300 flow. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:42,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:42,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:42,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:42,434 INFO L124 PetriNetUnfolderBase]: 755/1777 cut-off events. [2024-10-13 16:51:42,434 INFO L125 PetriNetUnfolderBase]: For 4749/4801 co-relation queries the response was YES. [2024-10-13 16:51:42,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5638 conditions, 1777 events. 755/1777 cut-off events. For 4749/4801 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11105 event pairs, 69 based on Foata normal form. 249/1982 useless extension candidates. Maximal degree in co-relation 3366. Up to 328 conditions per place. [2024-10-13 16:51:42,441 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 81 selfloop transitions, 21 changer transitions 0/115 dead transitions. [2024-10-13 16:51:42,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 115 transitions, 889 flow [2024-10-13 16:51:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:51:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:51:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-10-13 16:51:42,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-13 16:51:42,442 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 300 flow. Second operand 8 states and 160 transitions. [2024-10-13 16:51:42,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 115 transitions, 889 flow [2024-10-13 16:51:42,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 115 transitions, 860 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-13 16:51:42,447 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 491 flow [2024-10-13 16:51:42,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=491, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-10-13 16:51:42,447 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2024-10-13 16:51:42,447 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 491 flow [2024-10-13 16:51:42,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:42,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:42,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:42,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 16:51:42,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:42,649 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:42,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:42,649 INFO L85 PathProgramCache]: Analyzing trace with hash 432391016, now seen corresponding path program 1 times [2024-10-13 16:51:42,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:42,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747570165] [2024-10-13 16:51:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:42,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:42,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:42,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747570165] [2024-10-13 16:51:42,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747570165] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:42,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:42,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:51:42,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943644893] [2024-10-13 16:51:42,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:42,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:51:42,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:42,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:51:42,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:51:42,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:42,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:42,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:42,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:42,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:42,798 INFO L124 PetriNetUnfolderBase]: 701/1636 cut-off events. [2024-10-13 16:51:42,798 INFO L125 PetriNetUnfolderBase]: For 5294/5361 co-relation queries the response was YES. [2024-10-13 16:51:42,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5715 conditions, 1636 events. 701/1636 cut-off events. For 5294/5361 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10162 event pairs, 433 based on Foata normal form. 36/1627 useless extension candidates. Maximal degree in co-relation 4246. Up to 1119 conditions per place. [2024-10-13 16:51:42,807 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 58 selfloop transitions, 8 changer transitions 0/79 dead transitions. [2024-10-13 16:51:42,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 749 flow [2024-10-13 16:51:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:51:42,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:51:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-13 16:51:42,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-10-13 16:51:42,808 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 491 flow. Second operand 4 states and 68 transitions. [2024-10-13 16:51:42,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 749 flow [2024-10-13 16:51:42,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 79 transitions, 726 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 16:51:42,815 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 502 flow [2024-10-13 16:51:42,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=502, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-10-13 16:51:42,815 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 34 predicate places. [2024-10-13 16:51:42,816 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 502 flow [2024-10-13 16:51:42,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:42,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:42,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:42,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:51:42,816 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:42,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:42,817 INFO L85 PathProgramCache]: Analyzing trace with hash -23246054, now seen corresponding path program 1 times [2024-10-13 16:51:42,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:42,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462514916] [2024-10-13 16:51:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:42,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:51:42,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:42,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462514916] [2024-10-13 16:51:42,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462514916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:42,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:42,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:51:42,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929321143] [2024-10-13 16:51:42,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:42,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:51:42,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:42,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:51:42,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:51:42,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 16:51:42,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:42,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:42,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 16:51:42,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:42,962 INFO L124 PetriNetUnfolderBase]: 701/1573 cut-off events. [2024-10-13 16:51:42,963 INFO L125 PetriNetUnfolderBase]: For 5632/5699 co-relation queries the response was YES. [2024-10-13 16:51:42,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5843 conditions, 1573 events. 701/1573 cut-off events. For 5632/5699 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9494 event pairs, 481 based on Foata normal form. 19/1554 useless extension candidates. Maximal degree in co-relation 4391. Up to 1226 conditions per place. [2024-10-13 16:51:42,971 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 48 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2024-10-13 16:51:42,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 598 flow [2024-10-13 16:51:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:51:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:51:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-10-13 16:51:42,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-10-13 16:51:42,972 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 502 flow. Second operand 3 states and 44 transitions. [2024-10-13 16:51:42,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 598 flow [2024-10-13 16:51:42,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 582 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:51:42,977 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 486 flow [2024-10-13 16:51:42,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-10-13 16:51:42,978 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2024-10-13 16:51:42,978 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 486 flow [2024-10-13 16:51:42,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:42,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:42,978 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:51:42,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 16:51:42,978 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:42,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:42,979 INFO L85 PathProgramCache]: Analyzing trace with hash -720627399, now seen corresponding path program 1 times [2024-10-13 16:51:42,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:42,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850031833] [2024-10-13 16:51:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:42,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:51:43,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:43,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850031833] [2024-10-13 16:51:43,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850031833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:51:43,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:51:43,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:51:43,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055557509] [2024-10-13 16:51:43,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:51:43,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:51:43,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:51:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:51:43,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 16:51:43,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:43,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:43,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 16:51:43,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:43,109 INFO L124 PetriNetUnfolderBase]: 701/1558 cut-off events. [2024-10-13 16:51:43,109 INFO L125 PetriNetUnfolderBase]: For 5204/5271 co-relation queries the response was YES. [2024-10-13 16:51:43,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5741 conditions, 1558 events. 701/1558 cut-off events. For 5204/5271 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9302 event pairs, 481 based on Foata normal form. 19/1543 useless extension candidates. Maximal degree in co-relation 5718. Up to 1207 conditions per place. [2024-10-13 16:51:43,117 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 46 selfloop transitions, 1 changer transitions 2/59 dead transitions. [2024-10-13 16:51:43,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 580 flow [2024-10-13 16:51:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:51:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:51:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-10-13 16:51:43,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-10-13 16:51:43,119 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 486 flow. Second operand 3 states and 43 transitions. [2024-10-13 16:51:43,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 580 flow [2024-10-13 16:51:43,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:51:43,125 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 480 flow [2024-10-13 16:51:43,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-10-13 16:51:43,126 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2024-10-13 16:51:43,126 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 480 flow [2024-10-13 16:51:43,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:43,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:43,126 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-13 16:51:43,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 16:51:43,126 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:43,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:43,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1647347825, now seen corresponding path program 1 times [2024-10-13 16:51:43,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:43,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301681334] [2024-10-13 16:51:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:43,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:43,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301681334] [2024-10-13 16:51:43,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301681334] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:43,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241066021] [2024-10-13 16:51:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:43,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:43,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:43,204 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:43,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:51:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:43,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 16:51:43,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:43,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:43,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241066021] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:43,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:43,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:51:43,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306170939] [2024-10-13 16:51:43,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:43,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 16:51:43,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:43,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 16:51:43,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-13 16:51:43,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:43,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 480 flow. Second operand has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:43,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:43,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:43,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:43,731 INFO L124 PetriNetUnfolderBase]: 1514/3561 cut-off events. [2024-10-13 16:51:43,731 INFO L125 PetriNetUnfolderBase]: For 13852/14018 co-relation queries the response was YES. [2024-10-13 16:51:43,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12678 conditions, 3561 events. 1514/3561 cut-off events. For 13852/14018 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 22971 event pairs, 97 based on Foata normal form. 125/3676 useless extension candidates. Maximal degree in co-relation 12654. Up to 719 conditions per place. [2024-10-13 16:51:43,744 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 122 selfloop transitions, 61 changer transitions 7/200 dead transitions. [2024-10-13 16:51:43,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 200 transitions, 1822 flow [2024-10-13 16:51:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 16:51:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 16:51:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 270 transitions. [2024-10-13 16:51:43,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6490384615384616 [2024-10-13 16:51:43,745 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 480 flow. Second operand 13 states and 270 transitions. [2024-10-13 16:51:43,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 200 transitions, 1822 flow [2024-10-13 16:51:43,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 200 transitions, 1821 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:51:43,754 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 1246 flow [2024-10-13 16:51:43,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1246, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2024-10-13 16:51:43,754 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2024-10-13 16:51:43,754 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 1246 flow [2024-10-13 16:51:43,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:43,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:43,755 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-10-13 16:51:43,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 16:51:43,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:43,955 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:43,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:43,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1843030431, now seen corresponding path program 2 times [2024-10-13 16:51:43,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:43,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478142217] [2024-10-13 16:51:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:43,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:44,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:44,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478142217] [2024-10-13 16:51:44,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478142217] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:44,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342633539] [2024-10-13 16:51:44,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:51:44,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:44,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:44,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:44,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:51:44,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:51:44,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:51:44,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:51:44,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-13 16:51:44,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-13 16:51:44,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342633539] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:44,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:44,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-13 16:51:44,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760648515] [2024-10-13 16:51:44,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:44,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:51:44,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:44,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:51:44,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:51:44,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-10-13 16:51:44,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 1246 flow. Second operand has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:44,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:44,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-10-13 16:51:44,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:44,894 INFO L124 PetriNetUnfolderBase]: 2927/5482 cut-off events. [2024-10-13 16:51:44,894 INFO L125 PetriNetUnfolderBase]: For 32418/32742 co-relation queries the response was YES. [2024-10-13 16:51:44,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21783 conditions, 5482 events. 2927/5482 cut-off events. For 32418/32742 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 31502 event pairs, 410 based on Foata normal form. 390/5872 useless extension candidates. Maximal degree in co-relation 21749. Up to 1498 conditions per place. [2024-10-13 16:51:44,917 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 335 selfloop transitions, 20 changer transitions 6/364 dead transitions. [2024-10-13 16:51:44,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 364 transitions, 5184 flow [2024-10-13 16:51:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:51:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:51:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 221 transitions. [2024-10-13 16:51:44,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46041666666666664 [2024-10-13 16:51:44,919 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 1246 flow. Second operand 15 states and 221 transitions. [2024-10-13 16:51:44,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 364 transitions, 5184 flow [2024-10-13 16:51:44,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 364 transitions, 5013 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-10-13 16:51:44,945 INFO L231 Difference]: Finished difference. Result has 92 places, 107 transitions, 1267 flow [2024-10-13 16:51:44,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1267, PETRI_PLACES=92, PETRI_TRANSITIONS=107} [2024-10-13 16:51:44,946 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 58 predicate places. [2024-10-13 16:51:44,946 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 107 transitions, 1267 flow [2024-10-13 16:51:44,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:44,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:44,947 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-10-13 16:51:44,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 16:51:45,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 16:51:45,148 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:45,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash -512705999, now seen corresponding path program 2 times [2024-10-13 16:51:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:45,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811260243] [2024-10-13 16:51:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:45,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:45,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:45,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811260243] [2024-10-13 16:51:45,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811260243] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:45,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283325347] [2024-10-13 16:51:45,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:51:45,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:45,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:45,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:45,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:51:45,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:51:45,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:51:45,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 16:51:45,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:45,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:45,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283325347] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:45,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:45,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-13 16:51:45,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997539417] [2024-10-13 16:51:45,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:45,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 16:51:45,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:45,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 16:51:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-13 16:51:45,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:45,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 107 transitions, 1267 flow. Second operand has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:45,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:45,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:45,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:46,796 INFO L124 PetriNetUnfolderBase]: 4478/9927 cut-off events. [2024-10-13 16:51:46,796 INFO L125 PetriNetUnfolderBase]: For 76919/77763 co-relation queries the response was YES. [2024-10-13 16:51:46,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40234 conditions, 9927 events. 4478/9927 cut-off events. For 76919/77763 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 66612 event pairs, 251 based on Foata normal form. 484/10398 useless extension candidates. Maximal degree in co-relation 40203. Up to 2395 conditions per place. [2024-10-13 16:51:46,840 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 233 selfloop transitions, 245 changer transitions 11/500 dead transitions. [2024-10-13 16:51:46,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 500 transitions, 5704 flow [2024-10-13 16:51:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 16:51:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-13 16:51:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 534 transitions. [2024-10-13 16:51:46,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6675 [2024-10-13 16:51:46,843 INFO L175 Difference]: Start difference. First operand has 92 places, 107 transitions, 1267 flow. Second operand 25 states and 534 transitions. [2024-10-13 16:51:46,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 500 transitions, 5704 flow [2024-10-13 16:51:46,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 500 transitions, 5471 flow, removed 65 selfloop flow, removed 11 redundant places. [2024-10-13 16:51:46,882 INFO L231 Difference]: Finished difference. Result has 126 places, 293 transitions, 4587 flow [2024-10-13 16:51:46,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4587, PETRI_PLACES=126, PETRI_TRANSITIONS=293} [2024-10-13 16:51:46,883 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 92 predicate places. [2024-10-13 16:51:46,883 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 293 transitions, 4587 flow [2024-10-13 16:51:46,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:46,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:46,884 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-10-13 16:51:46,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 16:51:47,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 16:51:47,087 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:47,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash -389255759, now seen corresponding path program 3 times [2024-10-13 16:51:47,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:47,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105076601] [2024-10-13 16:51:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:47,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:47,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:47,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105076601] [2024-10-13 16:51:47,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105076601] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:47,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656948746] [2024-10-13 16:51:47,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:51:47,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:47,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:47,588 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:47,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 16:51:47,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-10-13 16:51:47,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:51:47,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 16:51:47,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:47,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:48,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656948746] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:48,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:48,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-10-13 16:51:48,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137815318] [2024-10-13 16:51:48,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:48,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-13 16:51:48,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:48,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-13 16:51:48,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-13 16:51:48,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:48,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 293 transitions, 4587 flow. Second operand has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:48,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:48,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:48,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:51:53,315 INFO L124 PetriNetUnfolderBase]: 12573/27639 cut-off events. [2024-10-13 16:51:53,315 INFO L125 PetriNetUnfolderBase]: For 495275/497207 co-relation queries the response was YES. [2024-10-13 16:51:53,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113608 conditions, 27639 events. 12573/27639 cut-off events. For 495275/497207 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 200320 event pairs, 1073 based on Foata normal form. 1693/29284 useless extension candidates. Maximal degree in co-relation 113556. Up to 5161 conditions per place. [2024-10-13 16:51:53,484 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 427 selfloop transitions, 909 changer transitions 11/1358 dead transitions. [2024-10-13 16:51:53,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1358 transitions, 19130 flow [2024-10-13 16:51:53,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-13 16:51:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-10-13 16:51:53,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1062 transitions. [2024-10-13 16:51:53,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6772959183673469 [2024-10-13 16:51:53,487 INFO L175 Difference]: Start difference. First operand has 126 places, 293 transitions, 4587 flow. Second operand 49 states and 1062 transitions. [2024-10-13 16:51:53,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1358 transitions, 19130 flow [2024-10-13 16:51:53,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 1358 transitions, 17265 flow, removed 901 selfloop flow, removed 5 redundant places. [2024-10-13 16:51:53,701 INFO L231 Difference]: Finished difference. Result has 214 places, 959 transitions, 16522 flow [2024-10-13 16:51:53,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4318, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=16522, PETRI_PLACES=214, PETRI_TRANSITIONS=959} [2024-10-13 16:51:53,702 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 180 predicate places. [2024-10-13 16:51:53,702 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 959 transitions, 16522 flow [2024-10-13 16:51:53,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:53,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:51:53,703 INFO L204 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-10-13 16:51:53,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 16:51:53,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 16:51:53,903 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:51:53,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:51:53,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1425992527, now seen corresponding path program 4 times [2024-10-13 16:51:53,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:51:53,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700926872] [2024-10-13 16:51:53,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:51:53,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:51:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:51:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:55,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:51:55,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700926872] [2024-10-13 16:51:55,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700926872] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:51:55,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278368603] [2024-10-13 16:51:55,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 16:51:55,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:51:55,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:51:55,601 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:51:55,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 16:51:55,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 16:51:55,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:51:55,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-13 16:51:55,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:51:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:55,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:51:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:51:57,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278368603] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:51:57,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:51:57,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-10-13 16:51:57,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520162939] [2024-10-13 16:51:57,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:51:57,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-10-13 16:51:57,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:51:57,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-10-13 16:51:57,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-10-13 16:51:57,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:51:57,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 959 transitions, 16522 flow. Second operand has 97 states, 97 states have (on average 13.02061855670103) internal successors, (1263), 97 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:51:57,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:51:57,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:51:57,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:52:28,866 INFO L124 PetriNetUnfolderBase]: 40364/87498 cut-off events. [2024-10-13 16:52:28,866 INFO L125 PetriNetUnfolderBase]: For 3656781/3663433 co-relation queries the response was YES. [2024-10-13 16:52:30,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369742 conditions, 87498 events. 40364/87498 cut-off events. For 3656781/3663433 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 704822 event pairs, 4203 based on Foata normal form. 6204/93643 useless extension candidates. Maximal degree in co-relation 369648. Up to 16674 conditions per place. [2024-10-13 16:52:30,300 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 813 selfloop transitions, 3397 changer transitions 11/4232 dead transitions. [2024-10-13 16:52:30,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 4232 transitions, 66489 flow [2024-10-13 16:52:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-10-13 16:52:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2024-10-13 16:52:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 2118 transitions. [2024-10-13 16:52:30,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6823453608247423 [2024-10-13 16:52:30,305 INFO L175 Difference]: Start difference. First operand has 214 places, 959 transitions, 16522 flow. Second operand 97 states and 2118 transitions. [2024-10-13 16:52:30,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 4232 transitions, 66489 flow [2024-10-13 16:52:31,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 4232 transitions, 59643 flow, removed 3247 selfloop flow, removed 11 redundant places. [2024-10-13 16:52:31,690 INFO L231 Difference]: Finished difference. Result has 392 places, 3449 transitions, 61513 flow [2024-10-13 16:52:31,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=15760, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=919, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=61513, PETRI_PLACES=392, PETRI_TRANSITIONS=3449} [2024-10-13 16:52:31,691 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 358 predicate places. [2024-10-13 16:52:31,691 INFO L471 AbstractCegarLoop]: Abstraction has has 392 places, 3449 transitions, 61513 flow [2024-10-13 16:52:31,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 13.02061855670103) internal successors, (1263), 97 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:31,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:52:31,692 INFO L204 CegarLoopForPetriNet]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2024-10-13 16:52:31,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 16:52:31,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:31,893 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-13 16:52:31,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:52:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1977574065, now seen corresponding path program 5 times [2024-10-13 16:52:31,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:52:31,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862749341] [2024-10-13 16:52:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:52:31,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:52:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:52:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:36,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:52:36,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862749341] [2024-10-13 16:52:36,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862749341] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:52:36,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848629494] [2024-10-13 16:52:36,366 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 16:52:36,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:52:36,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:52:36,367 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:52:36,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 16:52:36,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-10-13 16:52:36,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:52:36,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-10-13 16:52:36,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:52:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:36,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:52:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:52:44,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848629494] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:52:44,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:52:44,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2024-10-13 16:52:44,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814532531] [2024-10-13 16:52:44,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:52:44,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-10-13 16:52:44,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:52:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-10-13 16:52:44,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-10-13 16:52:44,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-10-13 16:52:44,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 3449 transitions, 61513 flow. Second operand has 193 states, 193 states have (on average 13.010362694300518) internal successors, (2511), 193 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:52:44,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:52:44,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-10-13 16:52:44,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand