./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --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-assert-order-craig-3061b6d-m [2024-11-19 01:53:22,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:53:22,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:53:22,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:53:22,620 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:53:22,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:53:22,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:53:22,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:53:22,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:53:22,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:53:22,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:53:22,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:53:22,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:53:22,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:53:22,653 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:53:22,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:53:22,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:53:22,655 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:53:22,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:53:22,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:53:22,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:53:22,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:53:22,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:53:22,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:53:22,661 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:53:22,661 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:53:22,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:53:22,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:53:22,662 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:53:22,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:53:22,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:53:22,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:53:22,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:53:22,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:53:22,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:53:22,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:53:22,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:53:22,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:53:22,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:53:22,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:53:22,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:53:22,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:53:22,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-11-19 01:53:22,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:53:22,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:53:22,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:53:22,925 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:53:22,925 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:53:22,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-19 01:53:24,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:53:24,571 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:53:24,572 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-19 01:53:24,583 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b86fa0e/089e758399714768a02d19c417bffaf1/FLAGe2a7f3b94 [2024-11-19 01:53:24,601 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b86fa0e/089e758399714768a02d19c417bffaf1 [2024-11-19 01:53:24,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:53:24,607 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:53:24,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:53:24,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:53:24,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:53:24,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290e28e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24, skipping insertion in model container [2024-11-19 01:53:24,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,650 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:53:24,851 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2124,2137] [2024-11-19 01:53:24,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:53:24,865 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:53:24,887 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2124,2137] [2024-11-19 01:53:24,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:53:24,909 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:53:24,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24 WrapperNode [2024-11-19 01:53:24,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:53:24,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:53:24,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:53:24,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:53:24,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,927 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,945 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2024-11-19 01:53:24,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:53:24,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:53:24,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:53:24,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:53:24,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,975 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 01:53:24,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,983 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:24,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:53:24,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:53:24,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:53:24,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:53:24,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (1/1) ... [2024-11-19 01:53:25,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:53:25,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:25,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:53:25,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:53:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:53:25,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:53:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:53:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:53:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:53:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:53:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:53:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:53:25,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:53:25,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:53:25,089 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:53:25,193 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:53:25,195 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:53:25,376 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:53:25,377 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:53:25,531 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:53:25,534 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 01:53:25,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:53:25 BoogieIcfgContainer [2024-11-19 01:53:25,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:53:25,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:53:25,537 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:53:25,540 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:53:25,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:53:24" (1/3) ... [2024-11-19 01:53:25,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16af3d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:53:25, skipping insertion in model container [2024-11-19 01:53:25,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:24" (2/3) ... [2024-11-19 01:53:25,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16af3d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:53:25, skipping insertion in model container [2024-11-19 01:53:25,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:53:25" (3/3) ... [2024-11-19 01:53:25,544 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-11-19 01:53:25,561 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:53:25,562 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:53:25,562 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:53:25,617 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:53:25,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 56 flow [2024-11-19 01:53:25,690 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2024-11-19 01:53:25,690 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:53:25,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 2/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-11-19 01:53:25,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 21 transitions, 56 flow [2024-11-19 01:53:25,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 18 transitions, 48 flow [2024-11-19 01:53:25,714 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:53:25,723 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;@41e7e9ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:53:25,724 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:53:25,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:53:25,740 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-19 01:53:25,740 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:53:25,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:25,741 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:25,742 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:25,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1126928125, now seen corresponding path program 1 times [2024-11-19 01:53:25,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:25,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931394568] [2024-11-19 01:53:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:53:25,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:53:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:26,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:26,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931394568] [2024-11-19 01:53:26,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931394568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:53:26,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:53:26,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:53:26,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383943637] [2024-11-19 01:53:26,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:53:26,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:53:26,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:26,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:53:26,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:53:26,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-19 01:53:26,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:26,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:26,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-19 01:53:26,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:26,260 INFO L124 PetriNetUnfolderBase]: 61/128 cut-off events. [2024-11-19 01:53:26,260 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-19 01:53:26,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 128 events. 61/128 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 381 event pairs, 31 based on Foata normal form. 9/136 useless extension candidates. Maximal degree in co-relation 218. Up to 86 conditions per place. [2024-11-19 01:53:26,263 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 19 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2024-11-19 01:53:26,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 109 flow [2024-11-19 01:53:26,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:53:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:53:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2024-11-19 01:53:26,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-11-19 01:53:26,276 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 48 flow. Second operand 4 states and 43 transitions. [2024-11-19 01:53:26,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 109 flow [2024-11-19 01:53:26,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:53:26,281 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2024-11-19 01:53:26,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-11-19 01:53:26,286 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2024-11-19 01:53:26,289 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2024-11-19 01:53:26,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:26,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:26,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:26,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:53:26,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:26,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1437000289, now seen corresponding path program 1 times [2024-11-19 01:53:26,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:26,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470775439] [2024-11-19 01:53:26,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:53:26,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:53:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:53:26,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:26,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470775439] [2024-11-19 01:53:26,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470775439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:53:26,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:53:26,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:53:26,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735879357] [2024-11-19 01:53:26,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:53:26,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:53:26,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:26,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:53:26,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:53:26,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-19 01:53:26,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:26,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:26,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-19 01:53:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:26,561 INFO L124 PetriNetUnfolderBase]: 89/179 cut-off events. [2024-11-19 01:53:26,561 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-11-19 01:53:26,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 179 events. 89/179 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 598 event pairs, 37 based on Foata normal form. 10/188 useless extension candidates. Maximal degree in co-relation 104. Up to 108 conditions per place. [2024-11-19 01:53:26,567 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 22 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-19 01:53:26,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 133 flow [2024-11-19 01:53:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:53:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:53:26,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-19 01:53:26,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-19 01:53:26,570 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 44 transitions. [2024-11-19 01:53:26,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 133 flow [2024-11-19 01:53:26,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:53:26,572 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-11-19 01:53:26,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2024-11-19 01:53:26,573 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2024-11-19 01:53:26,574 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-11-19 01:53:26,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:26,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:26,574 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:26,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:53:26,575 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:26,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:26,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1087690981, now seen corresponding path program 1 times [2024-11-19 01:53:26,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:26,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230949351] [2024-11-19 01:53:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:53:26,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:53:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:27,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230949351] [2024-11-19 01:53:27,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230949351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:27,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767699479] [2024-11-19 01:53:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:53:27,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:27,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:27,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:27,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:53:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:53:27,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:53:27,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:27,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:28,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767699479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:28,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:28,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 01:53:28,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36117428] [2024-11-19 01:53:28,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:28,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:53:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:53:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:53:28,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:28,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:28,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:28,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:28,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:29,223 INFO L124 PetriNetUnfolderBase]: 387/665 cut-off events. [2024-11-19 01:53:29,223 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-11-19 01:53:29,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 665 events. 387/665 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2625 event pairs, 23 based on Foata normal form. 14/679 useless extension candidates. Maximal degree in co-relation 595. Up to 218 conditions per place. [2024-11-19 01:53:29,228 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 74 selfloop transitions, 53 changer transitions 15/143 dead transitions. [2024-11-19 01:53:29,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 143 transitions, 708 flow [2024-11-19 01:53:29,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 01:53:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 01:53:29,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 215 transitions. [2024-11-19 01:53:29,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39377289377289376 [2024-11-19 01:53:29,232 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 26 states and 215 transitions. [2024-11-19 01:53:29,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 143 transitions, 708 flow [2024-11-19 01:53:29,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 143 transitions, 696 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:53:29,236 INFO L231 Difference]: Finished difference. Result has 65 places, 76 transitions, 504 flow [2024-11-19 01:53:29,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=504, PETRI_PLACES=65, PETRI_TRANSITIONS=76} [2024-11-19 01:53:29,237 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 42 predicate places. [2024-11-19 01:53:29,237 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 76 transitions, 504 flow [2024-11-19 01:53:29,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:29,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:29,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:29,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:53:29,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:29,442 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:29,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:29,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1244966769, now seen corresponding path program 2 times [2024-11-19 01:53:29,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:29,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150702504] [2024-11-19 01:53:29,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:53:29,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:29,456 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:53:29,457 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:29,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:29,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150702504] [2024-11-19 01:53:29,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150702504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:29,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235431600] [2024-11-19 01:53:29,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:53:29,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:29,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:29,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:53:29,759 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:53:29,760 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:29,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:53:29,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:29,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:30,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235431600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:30,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:30,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-19 01:53:30,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209037547] [2024-11-19 01:53:30,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:30,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 01:53:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 01:53:30,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:53:30,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:30,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 76 transitions, 504 flow. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 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) [2024-11-19 01:53:30,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:30,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:30,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:31,333 INFO L124 PetriNetUnfolderBase]: 575/1019 cut-off events. [2024-11-19 01:53:31,334 INFO L125 PetriNetUnfolderBase]: For 2651/2651 co-relation queries the response was YES. [2024-11-19 01:53:31,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4259 conditions, 1019 events. 575/1019 cut-off events. For 2651/2651 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4742 event pairs, 35 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 4213. Up to 292 conditions per place. [2024-11-19 01:53:31,343 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 102 selfloop transitions, 112 changer transitions 28/243 dead transitions. [2024-11-19 01:53:31,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 243 transitions, 1980 flow [2024-11-19 01:53:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 01:53:31,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 01:53:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 233 transitions. [2024-11-19 01:53:31,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4438095238095238 [2024-11-19 01:53:31,346 INFO L175 Difference]: Start difference. First operand has 65 places, 76 transitions, 504 flow. Second operand 25 states and 233 transitions. [2024-11-19 01:53:31,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 243 transitions, 1980 flow [2024-11-19 01:53:31,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 243 transitions, 1958 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-19 01:53:31,378 INFO L231 Difference]: Finished difference. Result has 104 places, 148 transitions, 1473 flow [2024-11-19 01:53:31,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1473, PETRI_PLACES=104, PETRI_TRANSITIONS=148} [2024-11-19 01:53:31,379 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 81 predicate places. [2024-11-19 01:53:31,380 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 148 transitions, 1473 flow [2024-11-19 01:53:31,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 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) [2024-11-19 01:53:31,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:31,381 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:31,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:53:31,581 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,SelfDestructingSolverStorable3 [2024-11-19 01:53:31,582 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:31,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:31,583 INFO L85 PathProgramCache]: Analyzing trace with hash 253928195, now seen corresponding path program 3 times [2024-11-19 01:53:31,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:31,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624971230] [2024-11-19 01:53:31,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:53:31,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:31,599 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:53:31,600 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:31,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:31,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624971230] [2024-11-19 01:53:31,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624971230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:31,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600044889] [2024-11-19 01:53:31,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:53:31,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:31,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:31,814 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:31,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:53:31,870 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:53:31,871 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:31,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:53:31,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:32,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:32,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600044889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:32,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:32,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 01:53:32,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893985380] [2024-11-19 01:53:32,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:32,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:53:32,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:32,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:53:32,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:53:32,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:32,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 148 transitions, 1473 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 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) [2024-11-19 01:53:32,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:32,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:32,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:33,679 INFO L124 PetriNetUnfolderBase]: 605/1078 cut-off events. [2024-11-19 01:53:33,680 INFO L125 PetriNetUnfolderBase]: For 5941/5941 co-relation queries the response was YES. [2024-11-19 01:53:33,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5920 conditions, 1078 events. 605/1078 cut-off events. For 5941/5941 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5141 event pairs, 27 based on Foata normal form. 2/1080 useless extension candidates. Maximal degree in co-relation 5846. Up to 306 conditions per place. [2024-11-19 01:53:33,693 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 105 selfloop transitions, 141 changer transitions 21/268 dead transitions. [2024-11-19 01:53:33,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 268 transitions, 2927 flow [2024-11-19 01:53:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 01:53:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 01:53:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 254 transitions. [2024-11-19 01:53:33,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-11-19 01:53:33,696 INFO L175 Difference]: Start difference. First operand has 104 places, 148 transitions, 1473 flow. Second operand 28 states and 254 transitions. [2024-11-19 01:53:33,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 268 transitions, 2927 flow [2024-11-19 01:53:33,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 268 transitions, 2810 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-11-19 01:53:33,735 INFO L231 Difference]: Finished difference. Result has 136 places, 180 transitions, 2232 flow [2024-11-19 01:53:33,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2232, PETRI_PLACES=136, PETRI_TRANSITIONS=180} [2024-11-19 01:53:33,738 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 113 predicate places. [2024-11-19 01:53:33,739 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 180 transitions, 2232 flow [2024-11-19 01:53:33,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 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) [2024-11-19 01:53:33,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:33,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:33,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 01:53:33,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:33,944 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:33,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1106845699, now seen corresponding path program 4 times [2024-11-19 01:53:33,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:33,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607503887] [2024-11-19 01:53:33,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:53:33,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:33,954 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:53:33,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:34,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:34,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607503887] [2024-11-19 01:53:34,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607503887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:34,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562036907] [2024-11-19 01:53:34,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:53:34,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:34,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:34,136 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:34,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:53:34,181 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:53:34,182 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:34,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 01:53:34,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:34,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:34,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562036907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:34,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:34,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 27 [2024-11-19 01:53:34,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19513723] [2024-11-19 01:53:34,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:34,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 01:53:34,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:34,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 01:53:34,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2024-11-19 01:53:34,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:34,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 180 transitions, 2232 flow. Second operand has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:34,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:34,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:34,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:37,971 INFO L124 PetriNetUnfolderBase]: 1033/1838 cut-off events. [2024-11-19 01:53:37,972 INFO L125 PetriNetUnfolderBase]: For 15460/15460 co-relation queries the response was YES. [2024-11-19 01:53:37,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11706 conditions, 1838 events. 1033/1838 cut-off events. For 15460/15460 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9689 event pairs, 8 based on Foata normal form. 20/1858 useless extension candidates. Maximal degree in co-relation 11614. Up to 538 conditions per place. [2024-11-19 01:53:37,994 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 224 selfloop transitions, 319 changer transitions 32/576 dead transitions. [2024-11-19 01:53:37,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 576 transitions, 7441 flow [2024-11-19 01:53:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-19 01:53:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2024-11-19 01:53:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 634 transitions. [2024-11-19 01:53:38,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39208410636982066 [2024-11-19 01:53:38,000 INFO L175 Difference]: Start difference. First operand has 136 places, 180 transitions, 2232 flow. Second operand 77 states and 634 transitions. [2024-11-19 01:53:38,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 576 transitions, 7441 flow [2024-11-19 01:53:38,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 576 transitions, 6956 flow, removed 117 selfloop flow, removed 14 redundant places. [2024-11-19 01:53:38,081 INFO L231 Difference]: Finished difference. Result has 210 places, 400 transitions, 5672 flow [2024-11-19 01:53:38,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=5672, PETRI_PLACES=210, PETRI_TRANSITIONS=400} [2024-11-19 01:53:38,082 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 187 predicate places. [2024-11-19 01:53:38,082 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 400 transitions, 5672 flow [2024-11-19 01:53:38,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:38,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:38,083 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:38,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 01:53:38,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:38,284 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:38,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:38,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1094682093, now seen corresponding path program 5 times [2024-11-19 01:53:38,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:38,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538392511] [2024-11-19 01:53:38,284 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:53:38,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:38,293 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:53:38,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:38,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:38,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538392511] [2024-11-19 01:53:38,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538392511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:38,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559024338] [2024-11-19 01:53:38,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:53:38,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:38,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:38,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:38,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:53:38,542 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:53:38,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:38,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 01:53:38,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:38,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:39,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559024338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:39,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:39,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 26 [2024-11-19 01:53:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175807219] [2024-11-19 01:53:39,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:39,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 01:53:39,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:39,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 01:53:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2024-11-19 01:53:39,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:39,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 400 transitions, 5672 flow. Second operand has 27 states, 27 states have (on average 4.814814814814815) internal successors, (130), 27 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:39,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:39,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:39,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:40,528 INFO L124 PetriNetUnfolderBase]: 1079/1914 cut-off events. [2024-11-19 01:53:40,529 INFO L125 PetriNetUnfolderBase]: For 15275/15275 co-relation queries the response was YES. [2024-11-19 01:53:40,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13123 conditions, 1914 events. 1079/1914 cut-off events. For 15275/15275 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10237 event pairs, 25 based on Foata normal form. 2/1916 useless extension candidates. Maximal degree in co-relation 12995. Up to 803 conditions per place. [2024-11-19 01:53:40,556 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 230 selfloop transitions, 283 changer transitions 11/525 dead transitions. [2024-11-19 01:53:40,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 525 transitions, 7938 flow [2024-11-19 01:53:40,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 01:53:40,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-19 01:53:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 284 transitions. [2024-11-19 01:53:40,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4098124098124098 [2024-11-19 01:53:40,559 INFO L175 Difference]: Start difference. First operand has 210 places, 400 transitions, 5672 flow. Second operand 33 states and 284 transitions. [2024-11-19 01:53:40,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 525 transitions, 7938 flow [2024-11-19 01:53:40,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 525 transitions, 6434 flow, removed 618 selfloop flow, removed 22 redundant places. [2024-11-19 01:53:40,730 INFO L231 Difference]: Finished difference. Result has 229 places, 440 transitions, 6001 flow [2024-11-19 01:53:40,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6001, PETRI_PLACES=229, PETRI_TRANSITIONS=440} [2024-11-19 01:53:40,733 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 206 predicate places. [2024-11-19 01:53:40,733 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 440 transitions, 6001 flow [2024-11-19 01:53:40,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.814814814814815) internal successors, (130), 27 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:40,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:40,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:40,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 01:53:40,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:40,935 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:40,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash 691254019, now seen corresponding path program 6 times [2024-11-19 01:53:40,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:40,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853707309] [2024-11-19 01:53:40,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:53:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:40,945 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:53:40,945 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:41,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853707309] [2024-11-19 01:53:41,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853707309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817456590] [2024-11-19 01:53:41,121 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:53:41,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:41,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:41,123 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) [2024-11-19 01:53:41,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:53:41,173 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:53:41,173 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:41,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:53:41,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:41,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:41,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817456590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:41,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:41,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 01:53:41,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495336895] [2024-11-19 01:53:41,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:41,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:53:41,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:41,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:53:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:53:41,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:41,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 440 transitions, 6001 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 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) [2024-11-19 01:53:41,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:41,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:41,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:42,609 INFO L124 PetriNetUnfolderBase]: 1208/2148 cut-off events. [2024-11-19 01:53:42,609 INFO L125 PetriNetUnfolderBase]: For 12317/12317 co-relation queries the response was YES. [2024-11-19 01:53:42,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13807 conditions, 2148 events. 1208/2148 cut-off events. For 12317/12317 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11888 event pairs, 18 based on Foata normal form. 10/2158 useless extension candidates. Maximal degree in co-relation 13666. Up to 1016 conditions per place. [2024-11-19 01:53:42,630 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 242 selfloop transitions, 303 changer transitions 22/568 dead transitions. [2024-11-19 01:53:42,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 568 transitions, 8411 flow [2024-11-19 01:53:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 01:53:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 01:53:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 202 transitions. [2024-11-19 01:53:42,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41821946169772256 [2024-11-19 01:53:42,632 INFO L175 Difference]: Start difference. First operand has 229 places, 440 transitions, 6001 flow. Second operand 23 states and 202 transitions. [2024-11-19 01:53:42,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 568 transitions, 8411 flow [2024-11-19 01:53:42,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 568 transitions, 8193 flow, removed 31 selfloop flow, removed 14 redundant places. [2024-11-19 01:53:42,792 INFO L231 Difference]: Finished difference. Result has 237 places, 495 transitions, 7896 flow [2024-11-19 01:53:42,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=5695, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7896, PETRI_PLACES=237, PETRI_TRANSITIONS=495} [2024-11-19 01:53:42,793 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 214 predicate places. [2024-11-19 01:53:42,793 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 495 transitions, 7896 flow [2024-11-19 01:53:42,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 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) [2024-11-19 01:53:42,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:42,793 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:42,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 01:53:42,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:42,995 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:42,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:42,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1544171523, now seen corresponding path program 7 times [2024-11-19 01:53:42,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:42,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366420204] [2024-11-19 01:53:42,995 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:53:42,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:53:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:43,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:43,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366420204] [2024-11-19 01:53:43,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366420204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:43,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730730017] [2024-11-19 01:53:43,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:53:43,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:43,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:43,174 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) [2024-11-19 01:53:43,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:53:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:53:43,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:53:43,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:43,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:43,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730730017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:43,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:43,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 01:53:43,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124935731] [2024-11-19 01:53:43,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:43,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:53:43,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:43,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:53:43,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:53:43,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:43,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 495 transitions, 7896 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:43,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:43,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:43,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:44,756 INFO L124 PetriNetUnfolderBase]: 1322/2334 cut-off events. [2024-11-19 01:53:44,757 INFO L125 PetriNetUnfolderBase]: For 18661/18661 co-relation queries the response was YES. [2024-11-19 01:53:44,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 2334 events. 1322/2334 cut-off events. For 18661/18661 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12961 event pairs, 18 based on Foata normal form. 2/2336 useless extension candidates. Maximal degree in co-relation 16616. Up to 1085 conditions per place. [2024-11-19 01:53:44,778 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 261 selfloop transitions, 370 changer transitions 7/639 dead transitions. [2024-11-19 01:53:44,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 639 transitions, 10801 flow [2024-11-19 01:53:44,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 01:53:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 01:53:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 213 transitions. [2024-11-19 01:53:44,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3901098901098901 [2024-11-19 01:53:44,781 INFO L175 Difference]: Start difference. First operand has 237 places, 495 transitions, 7896 flow. Second operand 26 states and 213 transitions. [2024-11-19 01:53:44,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 639 transitions, 10801 flow [2024-11-19 01:53:45,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 639 transitions, 10620 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-11-19 01:53:45,018 INFO L231 Difference]: Finished difference. Result has 261 places, 581 transitions, 10484 flow [2024-11-19 01:53:45,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=7767, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=10484, PETRI_PLACES=261, PETRI_TRANSITIONS=581} [2024-11-19 01:53:45,019 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 238 predicate places. [2024-11-19 01:53:45,019 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 581 transitions, 10484 flow [2024-11-19 01:53:45,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:45,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:45,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:45,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:53:45,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:45,225 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:45,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:45,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1247042307, now seen corresponding path program 8 times [2024-11-19 01:53:45,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:45,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870696397] [2024-11-19 01:53:45,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:53:45,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:45,232 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:53:45,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:45,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:45,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870696397] [2024-11-19 01:53:45,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870696397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:45,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87722833] [2024-11-19 01:53:45,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:53:45,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:45,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:45,429 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) [2024-11-19 01:53:45,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:53:45,475 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:53:45,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:45,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:53:45,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:45,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:45,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87722833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:45,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:45,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-19 01:53:45,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385084414] [2024-11-19 01:53:45,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:45,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 01:53:45,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:45,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 01:53:45,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:53:45,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:45,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 581 transitions, 10484 flow. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:45,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:45,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:45,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:46,862 INFO L124 PetriNetUnfolderBase]: 1339/2352 cut-off events. [2024-11-19 01:53:46,862 INFO L125 PetriNetUnfolderBase]: For 24925/24925 co-relation queries the response was YES. [2024-11-19 01:53:46,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18965 conditions, 2352 events. 1339/2352 cut-off events. For 24925/24925 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12975 event pairs, 21 based on Foata normal form. 7/2359 useless extension candidates. Maximal degree in co-relation 18834. Up to 1088 conditions per place. [2024-11-19 01:53:46,886 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 277 selfloop transitions, 345 changer transitions 24/647 dead transitions. [2024-11-19 01:53:46,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 647 transitions, 12397 flow [2024-11-19 01:53:46,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 01:53:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 01:53:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 190 transitions. [2024-11-19 01:53:46,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4308390022675737 [2024-11-19 01:53:46,888 INFO L175 Difference]: Start difference. First operand has 261 places, 581 transitions, 10484 flow. Second operand 21 states and 190 transitions. [2024-11-19 01:53:46,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 647 transitions, 12397 flow [2024-11-19 01:53:47,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 647 transitions, 12245 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-11-19 01:53:47,197 INFO L231 Difference]: Finished difference. Result has 276 places, 587 transitions, 11873 flow [2024-11-19 01:53:47,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=10313, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=11873, PETRI_PLACES=276, PETRI_TRANSITIONS=587} [2024-11-19 01:53:47,198 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 253 predicate places. [2024-11-19 01:53:47,198 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 587 transitions, 11873 flow [2024-11-19 01:53:47,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:47,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:47,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:47,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 01:53:47,399 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,SelfDestructingSolverStorable9 [2024-11-19 01:53:47,399 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:47,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:47,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2099959811, now seen corresponding path program 9 times [2024-11-19 01:53:47,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:47,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466369913] [2024-11-19 01:53:47,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:53:47,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:47,408 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:53:47,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:47,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466369913] [2024-11-19 01:53:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466369913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081532178] [2024-11-19 01:53:47,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:53:47,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:47,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:47,597 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) [2024-11-19 01:53:47,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:53:47,636 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:53:47,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:47,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:53:47,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:47,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081532178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:48,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:48,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 01:53:48,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301880331] [2024-11-19 01:53:48,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:48,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:53:48,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:48,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:53:48,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:53:48,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:48,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 587 transitions, 11873 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:48,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:48,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:48,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:49,396 INFO L124 PetriNetUnfolderBase]: 1389/2443 cut-off events. [2024-11-19 01:53:49,396 INFO L125 PetriNetUnfolderBase]: For 33757/33757 co-relation queries the response was YES. [2024-11-19 01:53:49,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21549 conditions, 2443 events. 1389/2443 cut-off events. For 33757/33757 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13587 event pairs, 19 based on Foata normal form. 2/2445 useless extension candidates. Maximal degree in co-relation 21422. Up to 1099 conditions per place. [2024-11-19 01:53:49,421 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 250 selfloop transitions, 456 changer transitions 10/717 dead transitions. [2024-11-19 01:53:49,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 717 transitions, 14982 flow [2024-11-19 01:53:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-19 01:53:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-19 01:53:49,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 281 transitions. [2024-11-19 01:53:49,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38231292517006804 [2024-11-19 01:53:49,424 INFO L175 Difference]: Start difference. First operand has 276 places, 587 transitions, 11873 flow. Second operand 35 states and 281 transitions. [2024-11-19 01:53:49,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 717 transitions, 14982 flow [2024-11-19 01:53:49,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 717 transitions, 14794 flow, removed 19 selfloop flow, removed 15 redundant places. [2024-11-19 01:53:49,797 INFO L231 Difference]: Finished difference. Result has 300 places, 654 transitions, 14368 flow [2024-11-19 01:53:49,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=11716, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=390, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=14368, PETRI_PLACES=300, PETRI_TRANSITIONS=654} [2024-11-19 01:53:49,798 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 277 predicate places. [2024-11-19 01:53:49,798 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 654 transitions, 14368 flow [2024-11-19 01:53:49,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:49,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:49,798 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:49,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 01:53:49,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:49,999 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:49,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:49,999 INFO L85 PathProgramCache]: Analyzing trace with hash -492124575, now seen corresponding path program 10 times [2024-11-19 01:53:49,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:50,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957024921] [2024-11-19 01:53:50,000 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:53:50,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:50,006 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:53:50,006 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:50,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:50,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957024921] [2024-11-19 01:53:50,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957024921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:50,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126023587] [2024-11-19 01:53:50,193 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:53:50,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:50,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:50,197 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) [2024-11-19 01:53:50,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:53:50,264 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:53:50,264 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:50,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 01:53:50,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:50,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:50,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:50,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126023587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:50,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:50,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 27 [2024-11-19 01:53:50,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223005249] [2024-11-19 01:53:50,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:50,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 01:53:50,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:50,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 01:53:50,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2024-11-19 01:53:50,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:50,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 654 transitions, 14368 flow. Second operand has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:50,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:50,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:50,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:52,042 INFO L124 PetriNetUnfolderBase]: 1389/2444 cut-off events. [2024-11-19 01:53:52,042 INFO L125 PetriNetUnfolderBase]: For 38071/38071 co-relation queries the response was YES. [2024-11-19 01:53:52,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23034 conditions, 2444 events. 1389/2444 cut-off events. For 38071/38071 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13609 event pairs, 16 based on Foata normal form. 3/2447 useless extension candidates. Maximal degree in co-relation 22876. Up to 1153 conditions per place. [2024-11-19 01:53:52,075 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 226 selfloop transitions, 470 changer transitions 5/702 dead transitions. [2024-11-19 01:53:52,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 702 transitions, 16100 flow [2024-11-19 01:53:52,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 01:53:52,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 01:53:52,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 185 transitions. [2024-11-19 01:53:52,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3830227743271222 [2024-11-19 01:53:52,080 INFO L175 Difference]: Start difference. First operand has 300 places, 654 transitions, 14368 flow. Second operand 23 states and 185 transitions. [2024-11-19 01:53:52,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 702 transitions, 16100 flow [2024-11-19 01:53:52,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 702 transitions, 15761 flow, removed 83 selfloop flow, removed 15 redundant places. [2024-11-19 01:53:52,485 INFO L231 Difference]: Finished difference. Result has 306 places, 655 transitions, 15162 flow [2024-11-19 01:53:52,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=13967, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=464, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=15162, PETRI_PLACES=306, PETRI_TRANSITIONS=655} [2024-11-19 01:53:52,486 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 283 predicate places. [2024-11-19 01:53:52,486 INFO L471 AbstractCegarLoop]: Abstraction has has 306 places, 655 transitions, 15162 flow [2024-11-19 01:53:52,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:52,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:52,486 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:52,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 01:53:52,687 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,SelfDestructingSolverStorable11 [2024-11-19 01:53:52,687 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:52,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash -185650157, now seen corresponding path program 11 times [2024-11-19 01:53:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:52,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646952746] [2024-11-19 01:53:52,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:53:52,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:52,695 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:53:52,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:52,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:52,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646952746] [2024-11-19 01:53:52,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646952746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:52,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234789862] [2024-11-19 01:53:52,913 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:53:52,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:52,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:52,915 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) [2024-11-19 01:53:52,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:53:52,964 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:53:52,964 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:52,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 01:53:52,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:53,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:53,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234789862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:53,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:53,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-19 01:53:53,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510499522] [2024-11-19 01:53:53,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:53,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 01:53:53,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:53,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 01:53:53,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=962, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 01:53:53,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:53,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 655 transitions, 15162 flow. Second operand has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:53,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:53,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:53,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:56,237 INFO L124 PetriNetUnfolderBase]: 1712/3074 cut-off events. [2024-11-19 01:53:56,238 INFO L125 PetriNetUnfolderBase]: For 56249/56249 co-relation queries the response was YES. [2024-11-19 01:53:56,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30555 conditions, 3074 events. 1712/3074 cut-off events. For 56249/56249 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 18170 event pairs, 69 based on Foata normal form. 4/3078 useless extension candidates. Maximal degree in co-relation 30339. Up to 880 conditions per place. [2024-11-19 01:53:56,267 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 397 selfloop transitions, 545 changer transitions 23/966 dead transitions. [2024-11-19 01:53:56,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 966 transitions, 22448 flow [2024-11-19 01:53:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-19 01:53:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-11-19 01:53:56,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 503 transitions. [2024-11-19 01:53:56,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4129720853858785 [2024-11-19 01:53:56,270 INFO L175 Difference]: Start difference. First operand has 306 places, 655 transitions, 15162 flow. Second operand 58 states and 503 transitions. [2024-11-19 01:53:56,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 966 transitions, 22448 flow [2024-11-19 01:53:56,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 966 transitions, 22295 flow, removed 35 selfloop flow, removed 14 redundant places. [2024-11-19 01:53:56,726 INFO L231 Difference]: Finished difference. Result has 365 places, 796 transitions, 20836 flow [2024-11-19 01:53:56,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=15027, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=429, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=20836, PETRI_PLACES=365, PETRI_TRANSITIONS=796} [2024-11-19 01:53:56,727 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 342 predicate places. [2024-11-19 01:53:56,728 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 796 transitions, 20836 flow [2024-11-19 01:53:56,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:56,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:56,728 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:56,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 01:53:56,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 01:53:56,929 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:56,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash 171951597, now seen corresponding path program 12 times [2024-11-19 01:53:56,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:56,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142019652] [2024-11-19 01:53:56,929 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:53:56,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:56,936 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:53:56,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:57,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:57,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142019652] [2024-11-19 01:53:57,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142019652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:57,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99804966] [2024-11-19 01:53:57,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:53:57,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:57,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:57,143 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) [2024-11-19 01:53:57,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 01:53:57,181 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:53:57,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:57,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 01:53:57,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:57,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:57,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99804966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:57,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:57,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2024-11-19 01:53:57,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411552805] [2024-11-19 01:53:57,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:57,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 01:53:57,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 01:53:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 01:53:57,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:53:57,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 796 transitions, 20836 flow. Second operand has 33 states, 33 states have (on average 4.696969696969697) internal successors, (155), 33 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:57,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:57,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:53:57,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:54:02,915 INFO L124 PetriNetUnfolderBase]: 2650/4793 cut-off events. [2024-11-19 01:54:02,916 INFO L125 PetriNetUnfolderBase]: For 113566/113566 co-relation queries the response was YES. [2024-11-19 01:54:02,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52499 conditions, 4793 events. 2650/4793 cut-off events. For 113566/113566 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 30721 event pairs, 45 based on Foata normal form. 22/4815 useless extension candidates. Maximal degree in co-relation 52404. Up to 1365 conditions per place. [2024-11-19 01:54:02,962 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 464 selfloop transitions, 932 changer transitions 39/1436 dead transitions. [2024-11-19 01:54:02,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1436 transitions, 37281 flow [2024-11-19 01:54:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-19 01:54:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2024-11-19 01:54:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 873 transitions. [2024-11-19 01:54:02,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.381389252948886 [2024-11-19 01:54:02,965 INFO L175 Difference]: Start difference. First operand has 365 places, 796 transitions, 20836 flow. Second operand 109 states and 873 transitions. [2024-11-19 01:54:02,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1436 transitions, 37281 flow [2024-11-19 01:54:04,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 1436 transitions, 36578 flow, removed 207 selfloop flow, removed 13 redundant places. [2024-11-19 01:54:04,152 INFO L231 Difference]: Finished difference. Result has 489 places, 1198 transitions, 35129 flow [2024-11-19 01:54:04,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=20390, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=109, PETRI_FLOW=35129, PETRI_PLACES=489, PETRI_TRANSITIONS=1198} [2024-11-19 01:54:04,156 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 466 predicate places. [2024-11-19 01:54:04,156 INFO L471 AbstractCegarLoop]: Abstraction has has 489 places, 1198 transitions, 35129 flow [2024-11-19 01:54:04,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.696969696969697) internal successors, (155), 33 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:54:04,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:54:04,157 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:54:04,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 01:54:04,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 01:54:04,358 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:54:04,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:54:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash 331302923, now seen corresponding path program 13 times [2024-11-19 01:54:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:54:04,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122271080] [2024-11-19 01:54:04,358 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:54:04,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:54:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:54:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:04,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:54:04,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122271080] [2024-11-19 01:54:04,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122271080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:54:04,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534899178] [2024-11-19 01:54:04,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:54:04,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:54:04,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:54:04,565 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:54:04,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 01:54:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:54:04,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 01:54:04,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:54:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:04,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:54:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:05,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534899178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:54:05,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:54:05,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-19 01:54:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492610393] [2024-11-19 01:54:05,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:54:05,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 01:54:05,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:54:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 01:54:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 01:54:05,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:54:05,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 1198 transitions, 35129 flow. Second operand has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:54:05,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:54:05,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:54:05,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:54:10,217 INFO L124 PetriNetUnfolderBase]: 2826/5111 cut-off events. [2024-11-19 01:54:10,217 INFO L125 PetriNetUnfolderBase]: For 165761/165761 co-relation queries the response was YES. [2024-11-19 01:54:10,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62027 conditions, 5111 events. 2826/5111 cut-off events. For 165761/165761 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 33305 event pairs, 55 based on Foata normal form. 5/5116 useless extension candidates. Maximal degree in co-relation 61587. Up to 1584 conditions per place. [2024-11-19 01:54:10,292 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 464 selfloop transitions, 1001 changer transitions 25/1491 dead transitions. [2024-11-19 01:54:10,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 1491 transitions, 43422 flow [2024-11-19 01:54:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-19 01:54:10,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-11-19 01:54:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 659 transitions. [2024-11-19 01:54:10,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39722724532851117 [2024-11-19 01:54:10,294 INFO L175 Difference]: Start difference. First operand has 489 places, 1198 transitions, 35129 flow. Second operand 79 states and 659 transitions. [2024-11-19 01:54:10,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 1491 transitions, 43422 flow [2024-11-19 01:54:12,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 1491 transitions, 42053 flow, removed 359 selfloop flow, removed 27 redundant places. [2024-11-19 01:54:12,665 INFO L231 Difference]: Finished difference. Result has 551 places, 1306 transitions, 40365 flow [2024-11-19 01:54:12,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=34004, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=893, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=40365, PETRI_PLACES=551, PETRI_TRANSITIONS=1306} [2024-11-19 01:54:12,668 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 528 predicate places. [2024-11-19 01:54:12,668 INFO L471 AbstractCegarLoop]: Abstraction has has 551 places, 1306 transitions, 40365 flow [2024-11-19 01:54:12,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:54:12,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:54:12,669 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:54:12,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 01:54:12,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 01:54:12,870 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:54:12,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:54:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1921420705, now seen corresponding path program 14 times [2024-11-19 01:54:12,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:54:12,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147772922] [2024-11-19 01:54:12,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:54:12,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:54:12,877 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:54:12,877 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:54:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:13,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:54:13,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147772922] [2024-11-19 01:54:13,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147772922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:54:13,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110239665] [2024-11-19 01:54:13,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:54:13,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:54:13,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:54:13,101 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:54:13,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 01:54:13,147 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:54:13,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:54:13,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 01:54:13,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:54:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:13,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:54:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:13,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110239665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:54:13,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:54:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-19 01:54:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934141674] [2024-11-19 01:54:13,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:54:13,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 01:54:13,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:54:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 01:54:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 01:54:13,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:54:13,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 1306 transitions, 40365 flow. Second operand has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:54:13,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:54:13,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:54:13,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:54:19,410 INFO L124 PetriNetUnfolderBase]: 3348/6027 cut-off events. [2024-11-19 01:54:19,410 INFO L125 PetriNetUnfolderBase]: For 217559/217559 co-relation queries the response was YES. [2024-11-19 01:54:19,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76640 conditions, 6027 events. 3348/6027 cut-off events. For 217559/217559 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 40681 event pairs, 74 based on Foata normal form. 5/6032 useless extension candidates. Maximal degree in co-relation 76103. Up to 1965 conditions per place. [2024-11-19 01:54:19,498 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 551 selfloop transitions, 1209 changer transitions 18/1779 dead transitions. [2024-11-19 01:54:19,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 1779 transitions, 55203 flow [2024-11-19 01:54:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-19 01:54:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2024-11-19 01:54:19,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 713 transitions. [2024-11-19 01:54:19,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3947951273532669 [2024-11-19 01:54:19,500 INFO L175 Difference]: Start difference. First operand has 551 places, 1306 transitions, 40365 flow. Second operand 86 states and 713 transitions. [2024-11-19 01:54:19,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 1779 transitions, 55203 flow [2024-11-19 01:54:22,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 1779 transitions, 54342 flow, removed 70 selfloop flow, removed 31 redundant places. [2024-11-19 01:54:22,901 INFO L231 Difference]: Finished difference. Result has 634 places, 1580 transitions, 52757 flow [2024-11-19 01:54:22,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=39633, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=944, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=52757, PETRI_PLACES=634, PETRI_TRANSITIONS=1580} [2024-11-19 01:54:22,903 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 611 predicate places. [2024-11-19 01:54:22,903 INFO L471 AbstractCegarLoop]: Abstraction has has 634 places, 1580 transitions, 52757 flow [2024-11-19 01:54:22,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:54:22,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:54:22,903 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:54:22,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 01:54:23,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:54:23,104 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:54:23,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:54:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash -105111933, now seen corresponding path program 15 times [2024-11-19 01:54:23,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:54:23,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78619921] [2024-11-19 01:54:23,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:54:23,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:54:23,111 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:54:23,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:54:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:23,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:54:23,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78619921] [2024-11-19 01:54:23,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78619921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:54:23,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742828731] [2024-11-19 01:54:23,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:54:23,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:54:23,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:54:23,310 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:54:23,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 01:54:23,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:54:23,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:54:23,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 01:54:23,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:54:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:23,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:54:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:24,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742828731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:54:24,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:54:24,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-19 01:54:24,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524378492] [2024-11-19 01:54:24,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:54:24,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 01:54:24,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:54:24,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 01:54:24,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 01:54:24,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:54:24,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 1580 transitions, 52757 flow. Second operand has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:54:24,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:54:24,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:54:24,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:54:29,868 INFO L124 PetriNetUnfolderBase]: 3652/6582 cut-off events. [2024-11-19 01:54:29,868 INFO L125 PetriNetUnfolderBase]: For 274661/274661 co-relation queries the response was YES. [2024-11-19 01:54:29,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89839 conditions, 6582 events. 3652/6582 cut-off events. For 274661/274661 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 45419 event pairs, 83 based on Foata normal form. 3/6585 useless extension candidates. Maximal degree in co-relation 89684. Up to 3096 conditions per place. [2024-11-19 01:54:29,962 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 702 selfloop transitions, 1144 changer transitions 20/1867 dead transitions. [2024-11-19 01:54:29,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 1867 transitions, 63060 flow [2024-11-19 01:54:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-19 01:54:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2024-11-19 01:54:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 526 transitions. [2024-11-19 01:54:29,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3795093795093795 [2024-11-19 01:54:29,963 INFO L175 Difference]: Start difference. First operand has 634 places, 1580 transitions, 52757 flow. Second operand 66 states and 526 transitions. [2024-11-19 01:54:29,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 1867 transitions, 63060 flow [2024-11-19 01:54:35,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 1867 transitions, 62615 flow, removed 164 selfloop flow, removed 12 redundant places. [2024-11-19 01:54:35,373 INFO L231 Difference]: Finished difference. Result has 712 places, 1726 transitions, 62004 flow [2024-11-19 01:54:35,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=52342, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=998, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=62004, PETRI_PLACES=712, PETRI_TRANSITIONS=1726} [2024-11-19 01:54:35,375 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 689 predicate places. [2024-11-19 01:54:35,375 INFO L471 AbstractCegarLoop]: Abstraction has has 712 places, 1726 transitions, 62004 flow [2024-11-19 01:54:35,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:54:35,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:54:35,376 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:54:35,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 01:54:35,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 01:54:35,581 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:54:35,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:54:35,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1879233675, now seen corresponding path program 16 times [2024-11-19 01:54:35,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:54:35,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14163060] [2024-11-19 01:54:35,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:54:35,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:54:35,588 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:54:35,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:54:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:35,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:54:35,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14163060] [2024-11-19 01:54:35,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14163060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:54:35,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137026178] [2024-11-19 01:54:35,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:54:35,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:54:35,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:54:35,799 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:54:35,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 01:54:35,845 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:54:35,845 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:54:35,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 01:54:35,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:54:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:36,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:54:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:36,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137026178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:54:36,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:54:36,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2024-11-19 01:54:36,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243219234] [2024-11-19 01:54:36,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:54:36,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-19 01:54:36,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:54:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-19 01:54:36,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 01:54:36,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2024-11-19 01:54:36,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 1726 transitions, 62004 flow. Second operand has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:54:36,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:54:36,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2024-11-19 01:54:36,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:54:43,406 INFO L124 PetriNetUnfolderBase]: 4000/7217 cut-off events. [2024-11-19 01:54:43,406 INFO L125 PetriNetUnfolderBase]: For 344510/344510 co-relation queries the response was YES. [2024-11-19 01:54:43,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102321 conditions, 7217 events. 4000/7217 cut-off events. For 344510/344510 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 50944 event pairs, 91 based on Foata normal form. 5/7222 useless extension candidates. Maximal degree in co-relation 101860. Up to 3275 conditions per place. [2024-11-19 01:54:43,515 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 604 selfloop transitions, 1456 changer transitions 18/2079 dead transitions. [2024-11-19 01:54:43,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 784 places, 2079 transitions, 73287 flow [2024-11-19 01:54:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-19 01:54:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-11-19 01:54:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 581 transitions. [2024-11-19 01:54:43,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36403508771929827 [2024-11-19 01:54:43,517 INFO L175 Difference]: Start difference. First operand has 712 places, 1726 transitions, 62004 flow. Second operand 76 states and 581 transitions. [2024-11-19 01:54:43,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 784 places, 2079 transitions, 73287 flow