./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-figure1-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-figure1-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 e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:49:57,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:49:57,092 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:49:57,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:49:57,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:49:57,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:49:57,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:49:57,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:49:57,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:49:57,148 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:49:57,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:49:57,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:49:57,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:49:57,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:49:57,149 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:49:57,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:49:57,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:49:57,152 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:49:57,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:49:57,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:49:57,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:49:57,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:49:57,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:49:57,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:49:57,157 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:49:57,158 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:49:57,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:49:57,158 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:49:57,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:49:57,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:49:57,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:49:57,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:49:57,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:49:57,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:49:57,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:49:57,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:49:57,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:49:57,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:49:57,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:49:57,168 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:49:57,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:49:57,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:49:57,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2024-11-19 01:49:57,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:49:57,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:49:57,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:49:57,599 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:49:57,600 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:49:57,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-19 01:49:59,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:49:59,466 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:49:59,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-19 01:49:59,475 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372c199db/506e3b85f73d450599e4bd77dc67342b/FLAG2631282b2 [2024-11-19 01:49:59,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372c199db/506e3b85f73d450599e4bd77dc67342b [2024-11-19 01:49:59,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:49:59,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:49:59,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:49:59,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:49:59,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:49:59,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69594f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59, skipping insertion in model container [2024-11-19 01:49:59,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:49:59,787 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-figure1-alt.wvr.c[1921,1934] [2024-11-19 01:49:59,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:49:59,799 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:49:59,826 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-figure1-alt.wvr.c[1921,1934] [2024-11-19 01:49:59,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:49:59,857 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:49:59,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59 WrapperNode [2024-11-19 01:49:59,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:49:59,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:49:59,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:49:59,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:49:59,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,904 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-11-19 01:49:59,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:49:59,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:49:59,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:49:59,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:49:59,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,924 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,941 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 01:49:59,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:49:59,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:49:59,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:49:59,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:49:59,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (1/1) ... [2024-11-19 01:49:59,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:49:59,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:00,012 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 01:50:00,015 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 01:50:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:50:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:50:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:50:00,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:50:00,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:50:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:50:00,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:50:00,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:50:00,064 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 01:50:00,158 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:50:00,160 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:50:00,379 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:50:00,382 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:50:00,565 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:50:00,566 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 01:50:00,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:50:00 BoogieIcfgContainer [2024-11-19 01:50:00,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:50:00,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:50:00,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:50:00,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:50:00,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:49:59" (1/3) ... [2024-11-19 01:50:00,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f78e0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:50:00, skipping insertion in model container [2024-11-19 01:50:00,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:59" (2/3) ... [2024-11-19 01:50:00,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f78e0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:50:00, skipping insertion in model container [2024-11-19 01:50:00,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:50:00" (3/3) ... [2024-11-19 01:50:00,586 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-11-19 01:50:00,612 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:50:00,614 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:50:00,614 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:50:00,682 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:50:00,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-11-19 01:50:00,777 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-19 01:50:00,785 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:50:00,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-19 01:50:00,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-11-19 01:50:00,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-11-19 01:50:00,802 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:50:00,807 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;@e9fb094, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:50:00,809 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:50:00,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:50:00,823 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-19 01:50:00,823 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:50:00,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:00,824 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:00,824 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 01:50:00,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:00,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1336823408, now seen corresponding path program 1 times [2024-11-19 01:50:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:00,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714842569] [2024-11-19 01:50:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:00,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:01,486 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 01:50:01,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714842569] [2024-11-19 01:50:01,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714842569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:01,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:01,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:50:01,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426839220] [2024-11-19 01:50:01,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:01,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:50:01,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:01,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:50:01,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:50:01,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-19 01:50:01,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:01,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:01,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-19 01:50:01,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:01,660 INFO L124 PetriNetUnfolderBase]: 87/185 cut-off events. [2024-11-19 01:50:01,660 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-19 01:50:01,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 185 events. 87/185 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 637 event pairs, 12 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 312. Up to 108 conditions per place. [2024-11-19 01:50:01,668 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 30 selfloop transitions, 4 changer transitions 9/45 dead transitions. [2024-11-19 01:50:01,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 45 transitions, 212 flow [2024-11-19 01:50:01,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:01,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-11-19 01:50:01,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4935064935064935 [2024-11-19 01:50:01,678 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 7 states and 76 transitions. [2024-11-19 01:50:01,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 45 transitions, 212 flow [2024-11-19 01:50:01,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:50:01,682 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 78 flow [2024-11-19 01:50:01,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2024-11-19 01:50:01,686 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2024-11-19 01:50:01,686 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 78 flow [2024-11-19 01:50:01,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:01,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:01,687 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:01,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:50:01,687 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 01:50:01,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:01,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1298187688, now seen corresponding path program 2 times [2024-11-19 01:50:01,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:01,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21669895] [2024-11-19 01:50:01,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:01,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:01,697 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:50:01,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:01,883 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 01:50:01,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:01,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21669895] [2024-11-19 01:50:01,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21669895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:01,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:01,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:50:01,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835818797] [2024-11-19 01:50:01,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:01,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:50:01,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:50:01,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:50:01,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-19 01:50:01,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:01,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:01,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-19 01:50:01,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:01,995 INFO L124 PetriNetUnfolderBase]: 85/178 cut-off events. [2024-11-19 01:50:01,995 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-19 01:50:01,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 178 events. 85/178 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 592 event pairs, 16 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 477. Up to 110 conditions per place. [2024-11-19 01:50:02,001 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 29 selfloop transitions, 8 changer transitions 6/45 dead transitions. [2024-11-19 01:50:02,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 254 flow [2024-11-19 01:50:02,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-11-19 01:50:02,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-11-19 01:50:02,002 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 78 flow. Second operand 7 states and 72 transitions. [2024-11-19 01:50:02,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 254 flow [2024-11-19 01:50:02,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 235 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-19 01:50:02,005 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 128 flow [2024-11-19 01:50:02,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-19 01:50:02,005 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2024-11-19 01:50:02,006 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 128 flow [2024-11-19 01:50:02,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:02,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:02,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:02,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:50:02,006 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 01:50:02,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:02,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1660513398, now seen corresponding path program 3 times [2024-11-19 01:50:02,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:02,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202160051] [2024-11-19 01:50:02,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:02,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:02,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:50:02,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:02,191 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 01:50:02,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:02,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202160051] [2024-11-19 01:50:02,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202160051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:02,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:02,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:50:02,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476822353] [2024-11-19 01:50:02,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:02,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:50:02,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:02,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:50:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:50:02,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-19 01:50:02,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 128 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:02,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:02,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-19 01:50:02,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:02,321 INFO L124 PetriNetUnfolderBase]: 90/192 cut-off events. [2024-11-19 01:50:02,322 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-11-19 01:50:02,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 192 events. 90/192 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 675 event pairs, 18 based on Foata normal form. 1/193 useless extension candidates. Maximal degree in co-relation 562. Up to 112 conditions per place. [2024-11-19 01:50:02,324 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 28 selfloop transitions, 11 changer transitions 7/48 dead transitions. [2024-11-19 01:50:02,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 300 flow [2024-11-19 01:50:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-11-19 01:50:02,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-11-19 01:50:02,325 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 128 flow. Second operand 7 states and 71 transitions. [2024-11-19 01:50:02,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 300 flow [2024-11-19 01:50:02,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 290 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 01:50:02,327 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 183 flow [2024-11-19 01:50:02,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-11-19 01:50:02,328 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2024-11-19 01:50:02,328 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 183 flow [2024-11-19 01:50:02,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:02,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:02,329 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:02,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:50:02,329 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 01:50:02,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1141097044, now seen corresponding path program 4 times [2024-11-19 01:50:02,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:02,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721917741] [2024-11-19 01:50:02,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:02,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:02,337 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:02,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:02,437 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 01:50:02,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:02,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721917741] [2024-11-19 01:50:02,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721917741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:02,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:02,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:50:02,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622312893] [2024-11-19 01:50:02,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:02,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:50:02,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:02,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:50:02,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:50:02,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-19 01:50:02,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:02,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:02,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-19 01:50:02,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:02,569 INFO L124 PetriNetUnfolderBase]: 88/189 cut-off events. [2024-11-19 01:50:02,569 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-11-19 01:50:02,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 189 events. 88/189 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 665 event pairs, 26 based on Foata normal form. 1/189 useless extension candidates. Maximal degree in co-relation 625. Up to 114 conditions per place. [2024-11-19 01:50:02,571 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 32 selfloop transitions, 12 changer transitions 6/52 dead transitions. [2024-11-19 01:50:02,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 388 flow [2024-11-19 01:50:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-11-19 01:50:02,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-11-19 01:50:02,572 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 183 flow. Second operand 7 states and 73 transitions. [2024-11-19 01:50:02,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 388 flow [2024-11-19 01:50:02,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 348 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-19 01:50:02,575 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 228 flow [2024-11-19 01:50:02,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2024-11-19 01:50:02,576 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2024-11-19 01:50:02,576 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 228 flow [2024-11-19 01:50:02,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:02,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:02,576 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:02,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:50:02,577 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 01:50:02,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:02,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1528241358, now seen corresponding path program 5 times [2024-11-19 01:50:02,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:02,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568018334] [2024-11-19 01:50:02,577 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:02,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:02,583 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:50:02,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:02,700 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 01:50:02,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:02,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568018334] [2024-11-19 01:50:02,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568018334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:02,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:02,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:50:02,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533286310] [2024-11-19 01:50:02,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:02,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:50:02,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:02,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:50:02,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:50:02,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-19 01:50:02,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:02,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:02,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-19 01:50:02,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:02,799 INFO L124 PetriNetUnfolderBase]: 86/183 cut-off events. [2024-11-19 01:50:02,800 INFO L125 PetriNetUnfolderBase]: For 324/324 co-relation queries the response was YES. [2024-11-19 01:50:02,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 183 events. 86/183 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 633 event pairs, 27 based on Foata normal form. 1/184 useless extension candidates. Maximal degree in co-relation 623. Up to 114 conditions per place. [2024-11-19 01:50:02,801 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 29 selfloop transitions, 13 changer transitions 5/49 dead transitions. [2024-11-19 01:50:02,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 379 flow [2024-11-19 01:50:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:02,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-11-19 01:50:02,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-19 01:50:02,803 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 228 flow. Second operand 7 states and 70 transitions. [2024-11-19 01:50:02,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 379 flow [2024-11-19 01:50:02,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 360 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-19 01:50:02,806 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 232 flow [2024-11-19 01:50:02,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2024-11-19 01:50:02,806 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2024-11-19 01:50:02,806 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 232 flow [2024-11-19 01:50:02,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:02,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:02,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:02,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:50:02,807 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 01:50:02,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1577648836, now seen corresponding path program 6 times [2024-11-19 01:50:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:02,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964621479] [2024-11-19 01:50:02,808 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:02,816 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:50:02,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:02,955 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 01:50:02,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:02,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964621479] [2024-11-19 01:50:02,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964621479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:02,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:02,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:50:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104357792] [2024-11-19 01:50:02,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:02,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:50:02,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:50:02,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:50:02,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-19 01:50:02,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:02,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:02,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-19 01:50:02,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:03,050 INFO L124 PetriNetUnfolderBase]: 82/165 cut-off events. [2024-11-19 01:50:03,051 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2024-11-19 01:50:03,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 165 events. 82/165 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 516 event pairs, 26 based on Foata normal form. 1/165 useless extension candidates. Maximal degree in co-relation 579. Up to 114 conditions per place. [2024-11-19 01:50:03,052 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 23 selfloop transitions, 13 changer transitions 6/44 dead transitions. [2024-11-19 01:50:03,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 365 flow [2024-11-19 01:50:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-11-19 01:50:03,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-19 01:50:03,053 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 232 flow. Second operand 7 states and 66 transitions. [2024-11-19 01:50:03,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 365 flow [2024-11-19 01:50:03,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 324 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 01:50:03,055 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 220 flow [2024-11-19 01:50:03,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=220, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2024-11-19 01:50:03,056 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2024-11-19 01:50:03,056 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 220 flow [2024-11-19 01:50:03,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 01:50:03,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:03,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:03,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:50:03,057 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 01:50:03,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:03,057 INFO L85 PathProgramCache]: Analyzing trace with hash -337179614, now seen corresponding path program 1 times [2024-11-19 01:50:03,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:03,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68212282] [2024-11-19 01:50:03,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:03,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:03,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:03,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68212282] [2024-11-19 01:50:03,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68212282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:03,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760415698] [2024-11-19 01:50:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:03,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:03,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:03,211 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 01:50:03,214 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 01:50:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:03,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:03,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:03,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:04,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760415698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:04,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:04,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 01:50:04,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331934930] [2024-11-19 01:50:04,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:04,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:50:04,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:04,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:50:04,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:50:04,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:04,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 220 flow. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 01:50:04,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:04,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:04,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:05,432 INFO L124 PetriNetUnfolderBase]: 318/613 cut-off events. [2024-11-19 01:50:05,432 INFO L125 PetriNetUnfolderBase]: For 588/588 co-relation queries the response was YES. [2024-11-19 01:50:05,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 613 events. 318/613 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2658 event pairs, 14 based on Foata normal form. 17/630 useless extension candidates. Maximal degree in co-relation 1671. Up to 144 conditions per place. [2024-11-19 01:50:05,439 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 125 selfloop transitions, 63 changer transitions 8/197 dead transitions. [2024-11-19 01:50:05,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 197 transitions, 1155 flow [2024-11-19 01:50:05,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-19 01:50:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-19 01:50:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 294 transitions. [2024-11-19 01:50:05,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2024-11-19 01:50:05,451 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 220 flow. Second operand 34 states and 294 transitions. [2024-11-19 01:50:05,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 197 transitions, 1155 flow [2024-11-19 01:50:05,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 197 transitions, 1071 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-11-19 01:50:05,461 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 546 flow [2024-11-19 01:50:05,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=546, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2024-11-19 01:50:05,462 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 54 predicate places. [2024-11-19 01:50:05,462 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 546 flow [2024-11-19 01:50:05,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 01:50:05,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:05,462 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:05,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:05,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:05,664 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 01:50:05,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:05,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1032572934, now seen corresponding path program 2 times [2024-11-19 01:50:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:05,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743031757] [2024-11-19 01:50:05,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:05,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:05,685 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:05,685 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:06,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:06,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743031757] [2024-11-19 01:50:06,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743031757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:06,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704685981] [2024-11-19 01:50:06,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:06,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:06,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:06,074 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 01:50:06,085 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 01:50:06,116 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:06,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:06,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:06,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:06,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:06,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704685981] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:06,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:06,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 01:50:06,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060959918] [2024-11-19 01:50:06,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:06,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:50:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:06,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:50:06,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:50:06,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:06,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 546 flow. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 01:50:06,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:06,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:06,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:07,645 INFO L124 PetriNetUnfolderBase]: 408/781 cut-off events. [2024-11-19 01:50:07,646 INFO L125 PetriNetUnfolderBase]: For 931/931 co-relation queries the response was YES. [2024-11-19 01:50:07,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 781 events. 408/781 cut-off events. For 931/931 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3688 event pairs, 25 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 2624. Up to 374 conditions per place. [2024-11-19 01:50:07,651 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 110 selfloop transitions, 93 changer transitions 8/212 dead transitions. [2024-11-19 01:50:07,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 212 transitions, 1503 flow [2024-11-19 01:50:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 01:50:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-19 01:50:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 254 transitions. [2024-11-19 01:50:07,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-11-19 01:50:07,653 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 546 flow. Second operand 31 states and 254 transitions. [2024-11-19 01:50:07,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 212 transitions, 1503 flow [2024-11-19 01:50:07,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 212 transitions, 1364 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-11-19 01:50:07,660 INFO L231 Difference]: Finished difference. Result has 112 places, 132 transitions, 962 flow [2024-11-19 01:50:07,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=962, PETRI_PLACES=112, PETRI_TRANSITIONS=132} [2024-11-19 01:50:07,663 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 88 predicate places. [2024-11-19 01:50:07,663 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 132 transitions, 962 flow [2024-11-19 01:50:07,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 01:50:07,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:07,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:07,679 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 01:50:07,867 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,SelfDestructingSolverStorable7 [2024-11-19 01:50:07,868 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 01:50:07,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:07,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1895609986, now seen corresponding path program 3 times [2024-11-19 01:50:07,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:07,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924422574] [2024-11-19 01:50:07,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:07,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:07,878 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:50:07,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:08,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:08,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924422574] [2024-11-19 01:50:08,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924422574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:08,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920809906] [2024-11-19 01:50:08,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:08,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:08,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:08,084 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 01:50:08,091 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 01:50:08,132 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:50:08,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:08,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:08,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:08,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:08,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920809906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:08,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:08,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 01:50:08,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614258515] [2024-11-19 01:50:08,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:08,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:50:08,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:50:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:50:08,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:08,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 132 transitions, 962 flow. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 01:50:08,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:08,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:08,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:10,537 INFO L124 PetriNetUnfolderBase]: 623/1198 cut-off events. [2024-11-19 01:50:10,537 INFO L125 PetriNetUnfolderBase]: For 2695/2695 co-relation queries the response was YES. [2024-11-19 01:50:10,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4779 conditions, 1198 events. 623/1198 cut-off events. For 2695/2695 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6358 event pairs, 20 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 4743. Up to 215 conditions per place. [2024-11-19 01:50:10,544 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 170 selfloop transitions, 197 changer transitions 8/376 dead transitions. [2024-11-19 01:50:10,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 376 transitions, 3027 flow [2024-11-19 01:50:10,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-19 01:50:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-19 01:50:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 475 transitions. [2024-11-19 01:50:10,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-11-19 01:50:10,546 INFO L175 Difference]: Start difference. First operand has 112 places, 132 transitions, 962 flow. Second operand 60 states and 475 transitions. [2024-11-19 01:50:10,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 376 transitions, 3027 flow [2024-11-19 01:50:10,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 376 transitions, 2933 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-11-19 01:50:10,562 INFO L231 Difference]: Finished difference. Result has 177 places, 230 transitions, 2176 flow [2024-11-19 01:50:10,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=2176, PETRI_PLACES=177, PETRI_TRANSITIONS=230} [2024-11-19 01:50:10,563 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 153 predicate places. [2024-11-19 01:50:10,563 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 230 transitions, 2176 flow [2024-11-19 01:50:10,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 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 01:50:10,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:10,563 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:10,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:50:10,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:10,765 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 01:50:10,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1763337946, now seen corresponding path program 4 times [2024-11-19 01:50:10,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:10,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403660965] [2024-11-19 01:50:10,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:10,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:10,777 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:10,777 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:10,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403660965] [2024-11-19 01:50:10,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403660965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968332287] [2024-11-19 01:50:10,992 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:10,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:10,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:11,000 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 01:50:11,001 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 01:50:11,043 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:11,043 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:11,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:11,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:11,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:11,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968332287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:11,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:11,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 01:50:11,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208173559] [2024-11-19 01:50:11,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:11,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:50:11,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:11,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:50:11,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:50:11,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:11,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 230 transitions, 2176 flow. Second operand has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 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 01:50:11,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:11,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:11,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:13,048 INFO L124 PetriNetUnfolderBase]: 781/1494 cut-off events. [2024-11-19 01:50:13,049 INFO L125 PetriNetUnfolderBase]: For 11325/11325 co-relation queries the response was YES. [2024-11-19 01:50:13,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8124 conditions, 1494 events. 781/1494 cut-off events. For 11325/11325 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8410 event pairs, 64 based on Foata normal form. 3/1493 useless extension candidates. Maximal degree in co-relation 7821. Up to 331 conditions per place. [2024-11-19 01:50:13,059 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 178 selfloop transitions, 253 changer transitions 9/441 dead transitions. [2024-11-19 01:50:13,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 441 transitions, 4710 flow [2024-11-19 01:50:13,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-19 01:50:13,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-19 01:50:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 443 transitions. [2024-11-19 01:50:13,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36611570247933883 [2024-11-19 01:50:13,061 INFO L175 Difference]: Start difference. First operand has 177 places, 230 transitions, 2176 flow. Second operand 55 states and 443 transitions. [2024-11-19 01:50:13,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 441 transitions, 4710 flow [2024-11-19 01:50:13,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 441 transitions, 4385 flow, removed 106 selfloop flow, removed 8 redundant places. [2024-11-19 01:50:13,106 INFO L231 Difference]: Finished difference. Result has 232 places, 308 transitions, 3294 flow [2024-11-19 01:50:13,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=3294, PETRI_PLACES=232, PETRI_TRANSITIONS=308} [2024-11-19 01:50:13,109 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 208 predicate places. [2024-11-19 01:50:13,109 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 308 transitions, 3294 flow [2024-11-19 01:50:13,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 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 01:50:13,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:13,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:13,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:50:13,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:13,310 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 01:50:13,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1648237250, now seen corresponding path program 5 times [2024-11-19 01:50:13,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:13,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690615553] [2024-11-19 01:50:13,311 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:13,316 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:13,316 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:13,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:13,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690615553] [2024-11-19 01:50:13,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690615553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:13,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775701943] [2024-11-19 01:50:13,427 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:13,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:13,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:13,429 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 01:50:13,430 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 01:50:13,463 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:13,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:13,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:13,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:13,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775701943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:13,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:13,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 01:50:13,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94883088] [2024-11-19 01:50:13,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:13,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:50:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:50:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:50:13,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:13,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 308 transitions, 3294 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:13,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:13,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:13,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:14,379 INFO L124 PetriNetUnfolderBase]: 787/1512 cut-off events. [2024-11-19 01:50:14,380 INFO L125 PetriNetUnfolderBase]: For 13675/13675 co-relation queries the response was YES. [2024-11-19 01:50:14,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9024 conditions, 1512 events. 787/1512 cut-off events. For 13675/13675 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8574 event pairs, 69 based on Foata normal form. 2/1508 useless extension candidates. Maximal degree in co-relation 8744. Up to 1002 conditions per place. [2024-11-19 01:50:14,391 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 160 selfloop transitions, 182 changer transitions 8/351 dead transitions. [2024-11-19 01:50:14,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 351 transitions, 4282 flow [2024-11-19 01:50:14,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 01:50:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 01:50:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 133 transitions. [2024-11-19 01:50:14,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35561497326203206 [2024-11-19 01:50:14,393 INFO L175 Difference]: Start difference. First operand has 232 places, 308 transitions, 3294 flow. Second operand 17 states and 133 transitions. [2024-11-19 01:50:14,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 351 transitions, 4282 flow [2024-11-19 01:50:14,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 351 transitions, 3957 flow, removed 41 selfloop flow, removed 17 redundant places. [2024-11-19 01:50:14,442 INFO L231 Difference]: Finished difference. Result has 236 places, 317 transitions, 3632 flow [2024-11-19 01:50:14,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3000, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3632, PETRI_PLACES=236, PETRI_TRANSITIONS=317} [2024-11-19 01:50:14,443 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2024-11-19 01:50:14,443 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 317 transitions, 3632 flow [2024-11-19 01:50:14,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:14,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:14,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:14,458 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 01:50:14,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 01:50:14,645 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 01:50:14,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:14,645 INFO L85 PathProgramCache]: Analyzing trace with hash -186917700, now seen corresponding path program 6 times [2024-11-19 01:50:14,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:14,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799286261] [2024-11-19 01:50:14,646 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:14,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:14,651 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:50:14,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:14,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:14,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799286261] [2024-11-19 01:50:14,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799286261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:14,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855814962] [2024-11-19 01:50:14,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:14,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:14,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:14,817 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 01:50:14,820 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 01:50:14,875 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:50:14,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:14,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:14,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:15,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:15,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855814962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:15,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:15,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 01:50:15,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893562682] [2024-11-19 01:50:15,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:15,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:50:15,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:15,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:50:15,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:50:15,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:15,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 317 transitions, 3632 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 01:50:15,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:15,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:15,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:16,386 INFO L124 PetriNetUnfolderBase]: 1094/2092 cut-off events. [2024-11-19 01:50:16,386 INFO L125 PetriNetUnfolderBase]: For 16467/16467 co-relation queries the response was YES. [2024-11-19 01:50:16,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12411 conditions, 2092 events. 1094/2092 cut-off events. For 16467/16467 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 12938 event pairs, 76 based on Foata normal form. 2/2094 useless extension candidates. Maximal degree in co-relation 12347. Up to 920 conditions per place. [2024-11-19 01:50:16,403 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 218 selfloop transitions, 310 changer transitions 8/537 dead transitions. [2024-11-19 01:50:16,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 537 transitions, 6664 flow [2024-11-19 01:50:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 01:50:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-19 01:50:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 291 transitions. [2024-11-19 01:50:16,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3574938574938575 [2024-11-19 01:50:16,407 INFO L175 Difference]: Start difference. First operand has 236 places, 317 transitions, 3632 flow. Second operand 37 states and 291 transitions. [2024-11-19 01:50:16,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 537 transitions, 6664 flow [2024-11-19 01:50:16,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 537 transitions, 6534 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 01:50:16,586 INFO L231 Difference]: Finished difference. Result has 280 places, 451 transitions, 6182 flow [2024-11-19 01:50:16,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3522, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6182, PETRI_PLACES=280, PETRI_TRANSITIONS=451} [2024-11-19 01:50:16,590 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 256 predicate places. [2024-11-19 01:50:16,590 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 451 transitions, 6182 flow [2024-11-19 01:50:16,590 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 01:50:16,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:16,590 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:16,615 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 01:50:16,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:16,791 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 01:50:16,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:16,792 INFO L85 PathProgramCache]: Analyzing trace with hash -324685818, now seen corresponding path program 7 times [2024-11-19 01:50:16,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:16,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973449048] [2024-11-19 01:50:16,792 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:50:16,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973449048] [2024-11-19 01:50:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973449048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494493905] [2024-11-19 01:50:16,908 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:50:16,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:16,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:16,910 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 01:50:16,914 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 01:50:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:16,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:16,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:17,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:17,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494493905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:17,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:17,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 01:50:17,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649044911] [2024-11-19 01:50:17,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:17,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:50:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:50:17,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:50:17,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:17,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 451 transitions, 6182 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:17,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:17,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:17,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:18,193 INFO L124 PetriNetUnfolderBase]: 1114/2148 cut-off events. [2024-11-19 01:50:18,194 INFO L125 PetriNetUnfolderBase]: For 21753/21753 co-relation queries the response was YES. [2024-11-19 01:50:18,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14676 conditions, 2148 events. 1114/2148 cut-off events. For 21753/21753 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 13498 event pairs, 74 based on Foata normal form. 2/2144 useless extension candidates. Maximal degree in co-relation 14598. Up to 1536 conditions per place. [2024-11-19 01:50:18,221 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 242 selfloop transitions, 250 changer transitions 8/501 dead transitions. [2024-11-19 01:50:18,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 501 transitions, 7609 flow [2024-11-19 01:50:18,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 01:50:18,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 01:50:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 138 transitions. [2024-11-19 01:50:18,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-11-19 01:50:18,224 INFO L175 Difference]: Start difference. First operand has 280 places, 451 transitions, 6182 flow. Second operand 18 states and 138 transitions. [2024-11-19 01:50:18,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 501 transitions, 7609 flow [2024-11-19 01:50:18,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 501 transitions, 7467 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-11-19 01:50:18,386 INFO L231 Difference]: Finished difference. Result has 296 places, 466 transitions, 7258 flow [2024-11-19 01:50:18,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6048, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7258, PETRI_PLACES=296, PETRI_TRANSITIONS=466} [2024-11-19 01:50:18,388 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 272 predicate places. [2024-11-19 01:50:18,389 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 466 transitions, 7258 flow [2024-11-19 01:50:18,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:18,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:18,390 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:18,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:18,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:18,593 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 01:50:18,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -497933510, now seen corresponding path program 8 times [2024-11-19 01:50:18,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:18,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168007242] [2024-11-19 01:50:18,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:18,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:18,606 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:18,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:18,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:18,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168007242] [2024-11-19 01:50:18,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168007242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:18,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245391638] [2024-11-19 01:50:18,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:18,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:18,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:18,748 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 01:50:18,749 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 01:50:18,795 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:18,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:18,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:18,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:18,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:19,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245391638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:19,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:19,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 01:50:19,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56416078] [2024-11-19 01:50:19,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:19,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:50:19,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:50:19,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:50:19,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:19,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 466 transitions, 7258 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:19,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:19,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:19,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:20,087 INFO L124 PetriNetUnfolderBase]: 1119/2163 cut-off events. [2024-11-19 01:50:20,088 INFO L125 PetriNetUnfolderBase]: For 22767/22767 co-relation queries the response was YES. [2024-11-19 01:50:20,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15680 conditions, 2163 events. 1119/2163 cut-off events. For 22767/22767 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 13660 event pairs, 80 based on Foata normal form. 2/2165 useless extension candidates. Maximal degree in co-relation 15596. Up to 1508 conditions per place. [2024-11-19 01:50:20,127 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 244 selfloop transitions, 255 changer transitions 8/508 dead transitions. [2024-11-19 01:50:20,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 508 transitions, 8557 flow [2024-11-19 01:50:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 01:50:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 01:50:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 151 transitions. [2024-11-19 01:50:20,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3431818181818182 [2024-11-19 01:50:20,135 INFO L175 Difference]: Start difference. First operand has 296 places, 466 transitions, 7258 flow. Second operand 20 states and 151 transitions. [2024-11-19 01:50:20,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 508 transitions, 8557 flow [2024-11-19 01:50:20,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 508 transitions, 8491 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-19 01:50:20,309 INFO L231 Difference]: Finished difference. Result has 312 places, 471 transitions, 8172 flow [2024-11-19 01:50:20,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7192, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8172, PETRI_PLACES=312, PETRI_TRANSITIONS=471} [2024-11-19 01:50:20,311 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 288 predicate places. [2024-11-19 01:50:20,311 INFO L471 AbstractCegarLoop]: Abstraction has has 312 places, 471 transitions, 8172 flow [2024-11-19 01:50:20,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:20,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:20,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:20,330 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 01:50:20,516 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,SelfDestructingSolverStorable13 [2024-11-19 01:50:20,517 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 01:50:20,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:20,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1961878836, now seen corresponding path program 9 times [2024-11-19 01:50:20,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:20,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38042609] [2024-11-19 01:50:20,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:20,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:20,524 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:50:20,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38042609] [2024-11-19 01:50:20,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38042609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935866005] [2024-11-19 01:50:20,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:20,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:20,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:20,683 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 01:50:20,687 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 01:50:20,725 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:50:20,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:20,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:20,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:20,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:21,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935866005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:21,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:21,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 01:50:21,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143343289] [2024-11-19 01:50:21,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:21,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:50:21,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:21,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:50:21,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:50:21,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:21,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 471 transitions, 8172 flow. Second operand has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 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 01:50:21,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:21,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:21,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:22,612 INFO L124 PetriNetUnfolderBase]: 1447/2797 cut-off events. [2024-11-19 01:50:22,612 INFO L125 PetriNetUnfolderBase]: For 36809/36809 co-relation queries the response was YES. [2024-11-19 01:50:22,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21645 conditions, 2797 events. 1447/2797 cut-off events. For 36809/36809 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 18743 event pairs, 64 based on Foata normal form. 3/2800 useless extension candidates. Maximal degree in co-relation 21556. Up to 1174 conditions per place. [2024-11-19 01:50:22,640 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 274 selfloop transitions, 432 changer transitions 12/719 dead transitions. [2024-11-19 01:50:22,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 719 transitions, 12689 flow [2024-11-19 01:50:22,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-19 01:50:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-19 01:50:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 353 transitions. [2024-11-19 01:50:22,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3646694214876033 [2024-11-19 01:50:22,642 INFO L175 Difference]: Start difference. First operand has 312 places, 471 transitions, 8172 flow. Second operand 44 states and 353 transitions. [2024-11-19 01:50:22,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 719 transitions, 12689 flow [2024-11-19 01:50:22,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 719 transitions, 12607 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-11-19 01:50:22,884 INFO L231 Difference]: Finished difference. Result has 355 places, 604 transitions, 11824 flow [2024-11-19 01:50:22,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=8089, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=11824, PETRI_PLACES=355, PETRI_TRANSITIONS=604} [2024-11-19 01:50:22,885 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 331 predicate places. [2024-11-19 01:50:22,885 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 604 transitions, 11824 flow [2024-11-19 01:50:22,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 0 states have call successors, (0), 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 01:50:22,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:22,885 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:22,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:23,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 01:50:23,087 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 01:50:23,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:23,087 INFO L85 PathProgramCache]: Analyzing trace with hash 263059504, now seen corresponding path program 10 times [2024-11-19 01:50:23,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:23,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632219488] [2024-11-19 01:50:23,087 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:23,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:23,093 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:23,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:23,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632219488] [2024-11-19 01:50:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632219488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261356183] [2024-11-19 01:50:23,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:23,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:23,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:23,247 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 01:50:23,249 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 01:50:23,294 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:23,295 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:23,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:23,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:23,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261356183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:23,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:23,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 01:50:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232424559] [2024-11-19 01:50:23,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:23,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:50:23,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:50:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:50:23,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:23,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 604 transitions, 11824 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:23,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:23,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:23,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:25,142 INFO L124 PetriNetUnfolderBase]: 1450/2810 cut-off events. [2024-11-19 01:50:25,142 INFO L125 PetriNetUnfolderBase]: For 50294/50294 co-relation queries the response was YES. [2024-11-19 01:50:25,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24473 conditions, 2810 events. 1450/2810 cut-off events. For 50294/50294 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 18858 event pairs, 97 based on Foata normal form. 2/2812 useless extension candidates. Maximal degree in co-relation 24367. Up to 1914 conditions per place. [2024-11-19 01:50:25,225 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 300 selfloop transitions, 346 changer transitions 8/655 dead transitions. [2024-11-19 01:50:25,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 655 transitions, 13548 flow [2024-11-19 01:50:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 01:50:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 01:50:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 181 transitions. [2024-11-19 01:50:25,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31643356643356646 [2024-11-19 01:50:25,226 INFO L175 Difference]: Start difference. First operand has 355 places, 604 transitions, 11824 flow. Second operand 26 states and 181 transitions. [2024-11-19 01:50:25,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 655 transitions, 13548 flow [2024-11-19 01:50:25,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 655 transitions, 13179 flow, removed 71 selfloop flow, removed 26 redundant places. [2024-11-19 01:50:25,726 INFO L231 Difference]: Finished difference. Result has 357 places, 615 transitions, 12668 flow [2024-11-19 01:50:25,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=11463, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=12668, PETRI_PLACES=357, PETRI_TRANSITIONS=615} [2024-11-19 01:50:25,727 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 333 predicate places. [2024-11-19 01:50:25,727 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 615 transitions, 12668 flow [2024-11-19 01:50:25,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:25,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:25,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:25,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 01:50:25,928 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,SelfDestructingSolverStorable15 [2024-11-19 01:50:25,928 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 01:50:25,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1345255678, now seen corresponding path program 11 times [2024-11-19 01:50:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:25,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79690536] [2024-11-19 01:50:25,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:25,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:25,939 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:25,939 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:26,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:26,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79690536] [2024-11-19 01:50:26,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79690536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:26,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209802966] [2024-11-19 01:50:26,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:26,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:26,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:26,102 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 01:50:26,103 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 01:50:26,161 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:26,161 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:26,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:26,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:26,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:26,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209802966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:26,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:26,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 01:50:26,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578170656] [2024-11-19 01:50:26,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:26,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:50:26,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:26,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:50:26,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:50:26,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:26,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 615 transitions, 12668 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:26,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:26,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:26,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:27,424 INFO L124 PetriNetUnfolderBase]: 1456/2828 cut-off events. [2024-11-19 01:50:27,425 INFO L125 PetriNetUnfolderBase]: For 55962/55962 co-relation queries the response was YES. [2024-11-19 01:50:27,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25547 conditions, 2828 events. 1456/2828 cut-off events. For 55962/55962 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 19025 event pairs, 104 based on Foata normal form. 2/2830 useless extension candidates. Maximal degree in co-relation 25450. Up to 1926 conditions per place. [2024-11-19 01:50:27,458 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 316 selfloop transitions, 329 changer transitions 8/654 dead transitions. [2024-11-19 01:50:27,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 654 transitions, 14335 flow [2024-11-19 01:50:27,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 01:50:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 01:50:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 144 transitions. [2024-11-19 01:50:27,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-11-19 01:50:27,460 INFO L175 Difference]: Start difference. First operand has 357 places, 615 transitions, 12668 flow. Second operand 20 states and 144 transitions. [2024-11-19 01:50:27,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 654 transitions, 14335 flow [2024-11-19 01:50:28,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 654 transitions, 14205 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-11-19 01:50:28,018 INFO L231 Difference]: Finished difference. Result has 368 places, 621 transitions, 13677 flow [2024-11-19 01:50:28,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=12538, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=13677, PETRI_PLACES=368, PETRI_TRANSITIONS=621} [2024-11-19 01:50:28,024 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 344 predicate places. [2024-11-19 01:50:28,024 INFO L471 AbstractCegarLoop]: Abstraction has has 368 places, 621 transitions, 13677 flow [2024-11-19 01:50:28,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:28,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:28,025 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:28,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 01:50:28,229 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,SelfDestructingSolverStorable16 [2024-11-19 01:50:28,230 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 01:50:28,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1751599248, now seen corresponding path program 12 times [2024-11-19 01:50:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:28,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615153068] [2024-11-19 01:50:28,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:28,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:28,244 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:50:28,244 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:28,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:28,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615153068] [2024-11-19 01:50:28,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615153068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:28,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762821742] [2024-11-19 01:50:28,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:28,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:28,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:28,484 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 01:50:28,485 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 01:50:28,525 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:50:28,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:28,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:28,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:28,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:28,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762821742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:28,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:28,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 01:50:28,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939897453] [2024-11-19 01:50:28,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:28,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:50:28,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:28,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:50:28,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:50:28,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:28,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 621 transitions, 13677 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:28,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:28,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:28,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:30,805 INFO L124 PetriNetUnfolderBase]: 1645/3182 cut-off events. [2024-11-19 01:50:30,805 INFO L125 PetriNetUnfolderBase]: For 71577/71577 co-relation queries the response was YES. [2024-11-19 01:50:30,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29996 conditions, 3182 events. 1645/3182 cut-off events. For 71577/71577 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 21785 event pairs, 94 based on Foata normal form. 3/3185 useless extension candidates. Maximal degree in co-relation 29894. Up to 1431 conditions per place. [2024-11-19 01:50:30,838 INFO L140 encePairwiseOnDemand]: 9/22 looper letters, 283 selfloop transitions, 532 changer transitions 12/828 dead transitions. [2024-11-19 01:50:30,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 828 transitions, 18472 flow [2024-11-19 01:50:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-19 01:50:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-19 01:50:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 377 transitions. [2024-11-19 01:50:30,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35700757575757575 [2024-11-19 01:50:30,845 INFO L175 Difference]: Start difference. First operand has 368 places, 621 transitions, 13677 flow. Second operand 48 states and 377 transitions. [2024-11-19 01:50:30,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 828 transitions, 18472 flow [2024-11-19 01:50:31,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 828 transitions, 18225 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-11-19 01:50:31,425 INFO L231 Difference]: Finished difference. Result has 422 places, 726 transitions, 17533 flow [2024-11-19 01:50:31,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=13446, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=437, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=17533, PETRI_PLACES=422, PETRI_TRANSITIONS=726} [2024-11-19 01:50:31,426 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 398 predicate places. [2024-11-19 01:50:31,426 INFO L471 AbstractCegarLoop]: Abstraction has has 422 places, 726 transitions, 17533 flow [2024-11-19 01:50:31,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:31,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:31,427 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:31,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:31,627 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,SelfDestructingSolverStorable17 [2024-11-19 01:50:31,628 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:31,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash 89811812, now seen corresponding path program 13 times [2024-11-19 01:50:31,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:31,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288206333] [2024-11-19 01:50:31,628 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:50:31,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:31,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:31,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288206333] [2024-11-19 01:50:31,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288206333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:31,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474369611] [2024-11-19 01:50:31,790 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:50:31,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:31,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:31,791 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 01:50:31,792 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 01:50:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:31,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:31,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:31,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474369611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:32,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:32,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 01:50:32,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440665649] [2024-11-19 01:50:32,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:32,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:50:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:50:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:50:32,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:32,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 726 transitions, 17533 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:32,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:32,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:32,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:33,783 INFO L124 PetriNetUnfolderBase]: 1643/3178 cut-off events. [2024-11-19 01:50:33,784 INFO L125 PetriNetUnfolderBase]: For 104373/104373 co-relation queries the response was YES. [2024-11-19 01:50:33,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33667 conditions, 3178 events. 1643/3178 cut-off events. For 104373/104373 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 21738 event pairs, 101 based on Foata normal form. 1/3179 useless extension candidates. Maximal degree in co-relation 33544. Up to 2174 conditions per place. [2024-11-19 01:50:33,853 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 374 selfloop transitions, 385 changer transitions 4/764 dead transitions. [2024-11-19 01:50:33,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 764 transitions, 19350 flow [2024-11-19 01:50:33,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 01:50:33,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 01:50:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 168 transitions. [2024-11-19 01:50:33,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-11-19 01:50:33,855 INFO L175 Difference]: Start difference. First operand has 422 places, 726 transitions, 17533 flow. Second operand 24 states and 168 transitions. [2024-11-19 01:50:33,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 764 transitions, 19350 flow [2024-11-19 01:50:34,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 764 transitions, 18807 flow, removed 178 selfloop flow, removed 14 redundant places. [2024-11-19 01:50:34,484 INFO L231 Difference]: Finished difference. Result has 430 places, 729 transitions, 17873 flow [2024-11-19 01:50:34,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=17000, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=17873, PETRI_PLACES=430, PETRI_TRANSITIONS=729} [2024-11-19 01:50:34,486 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 406 predicate places. [2024-11-19 01:50:34,486 INFO L471 AbstractCegarLoop]: Abstraction has has 430 places, 729 transitions, 17873 flow [2024-11-19 01:50:34,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:34,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:34,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:34,499 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 01:50:34,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:34,691 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:34,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:34,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1613071098, now seen corresponding path program 14 times [2024-11-19 01:50:34,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:34,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060318819] [2024-11-19 01:50:34,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:34,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:34,699 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:34,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:34,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:34,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060318819] [2024-11-19 01:50:34,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060318819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:34,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014907151] [2024-11-19 01:50:34,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:34,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:34,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:34,921 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 01:50:34,923 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 01:50:34,984 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:34,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:34,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:34,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:35,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:35,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014907151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:35,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:35,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 01:50:35,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703483910] [2024-11-19 01:50:35,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:35,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:50:35,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:35,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:50:35,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:50:35,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:35,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 729 transitions, 17873 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:35,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:35,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:35,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:37,815 INFO L124 PetriNetUnfolderBase]: 1665/3229 cut-off events. [2024-11-19 01:50:37,815 INFO L125 PetriNetUnfolderBase]: For 108575/108575 co-relation queries the response was YES. [2024-11-19 01:50:37,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34542 conditions, 3229 events. 1665/3229 cut-off events. For 108575/108575 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 22240 event pairs, 93 based on Foata normal form. 3/3232 useless extension candidates. Maximal degree in co-relation 34420. Up to 1594 conditions per place. [2024-11-19 01:50:37,846 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 299 selfloop transitions, 532 changer transitions 12/844 dead transitions. [2024-11-19 01:50:37,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 844 transitions, 20703 flow [2024-11-19 01:50:37,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-19 01:50:37,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-19 01:50:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 398 transitions. [2024-11-19 01:50:37,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32305194805194803 [2024-11-19 01:50:37,848 INFO L175 Difference]: Start difference. First operand has 430 places, 729 transitions, 17873 flow. Second operand 56 states and 398 transitions. [2024-11-19 01:50:37,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 844 transitions, 20703 flow [2024-11-19 01:50:38,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 844 transitions, 20443 flow, removed 6 selfloop flow, removed 21 redundant places. [2024-11-19 01:50:38,365 INFO L231 Difference]: Finished difference. Result has 468 places, 756 transitions, 19504 flow [2024-11-19 01:50:38,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=17615, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=19504, PETRI_PLACES=468, PETRI_TRANSITIONS=756} [2024-11-19 01:50:38,366 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 444 predicate places. [2024-11-19 01:50:38,366 INFO L471 AbstractCegarLoop]: Abstraction has has 468 places, 756 transitions, 19504 flow [2024-11-19 01:50:38,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:38,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:38,366 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:38,379 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 01:50:38,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:38,570 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:38,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash 963552492, now seen corresponding path program 15 times [2024-11-19 01:50:38,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:38,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037272989] [2024-11-19 01:50:38,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:38,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:38,575 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:50:38,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:38,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:38,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037272989] [2024-11-19 01:50:38,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037272989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:38,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526081350] [2024-11-19 01:50:38,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:38,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:38,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:38,695 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 01:50:38,697 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 01:50:38,735 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:50:38,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:38,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:50:38,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:38,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:39,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526081350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:39,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:39,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 01:50:39,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443987700] [2024-11-19 01:50:39,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:39,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 01:50:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:39,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 01:50:39,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:50:39,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:39,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 756 transitions, 19504 flow. Second operand has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:39,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:39,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:39,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:40,860 INFO L124 PetriNetUnfolderBase]: 1665/3221 cut-off events. [2024-11-19 01:50:40,860 INFO L125 PetriNetUnfolderBase]: For 125400/125400 co-relation queries the response was YES. [2024-11-19 01:50:40,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36454 conditions, 3221 events. 1665/3221 cut-off events. For 125400/125400 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 22151 event pairs, 97 based on Foata normal form. 3/3224 useless extension candidates. Maximal degree in co-relation 36194. Up to 1849 conditions per place. [2024-11-19 01:50:41,030 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 343 selfloop transitions, 467 changer transitions 13/824 dead transitions. [2024-11-19 01:50:41,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 824 transitions, 21776 flow [2024-11-19 01:50:41,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-19 01:50:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-19 01:50:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 285 transitions. [2024-11-19 01:50:41,031 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3321678321678322 [2024-11-19 01:50:41,031 INFO L175 Difference]: Start difference. First operand has 468 places, 756 transitions, 19504 flow. Second operand 39 states and 285 transitions. [2024-11-19 01:50:41,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 824 transitions, 21776 flow [2024-11-19 01:50:41,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 824 transitions, 21432 flow, removed 112 selfloop flow, removed 22 redundant places. [2024-11-19 01:50:41,674 INFO L231 Difference]: Finished difference. Result has 482 places, 761 transitions, 20860 flow [2024-11-19 01:50:41,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=19162, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=458, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=20860, PETRI_PLACES=482, PETRI_TRANSITIONS=761} [2024-11-19 01:50:41,675 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 458 predicate places. [2024-11-19 01:50:41,675 INFO L471 AbstractCegarLoop]: Abstraction has has 482 places, 761 transitions, 20860 flow [2024-11-19 01:50:41,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.68) internal successors, (117), 25 states have internal predecessors, (117), 0 states have call successors, (0), 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 01:50:41,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:41,675 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:41,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:41,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:41,879 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:41,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash 581851031, now seen corresponding path program 1 times [2024-11-19 01:50:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:41,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554896976] [2024-11-19 01:50:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:41,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:42,012 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 01:50:42,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:42,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554896976] [2024-11-19 01:50:42,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554896976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:42,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042638386] [2024-11-19 01:50:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:42,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:42,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:42,015 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 01:50:42,017 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 01:50:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:42,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 01:50:42,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:42,191 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 01:50:42,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:42,358 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 01:50:42,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042638386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:42,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:42,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2024-11-19 01:50:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93794139] [2024-11-19 01:50:42,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:42,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 01:50:42,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 01:50:42,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2024-11-19 01:50:42,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:42,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 761 transitions, 20860 flow. Second operand has 29 states, 29 states have (on average 4.448275862068965) internal successors, (129), 29 states have internal predecessors, (129), 0 states have call successors, (0), 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 01:50:42,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:42,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:42,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:43,965 INFO L124 PetriNetUnfolderBase]: 1669/3221 cut-off events. [2024-11-19 01:50:43,966 INFO L125 PetriNetUnfolderBase]: For 150502/150502 co-relation queries the response was YES. [2024-11-19 01:50:43,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38518 conditions, 3221 events. 1669/3221 cut-off events. For 150502/150502 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 21996 event pairs, 143 based on Foata normal form. 2/3223 useless extension candidates. Maximal degree in co-relation 38382. Up to 975 conditions per place. [2024-11-19 01:50:44,007 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 348 selfloop transitions, 483 changer transitions 23/855 dead transitions. [2024-11-19 01:50:44,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 855 transitions, 23469 flow [2024-11-19 01:50:44,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-19 01:50:44,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-19 01:50:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 288 transitions. [2024-11-19 01:50:44,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3850267379679144 [2024-11-19 01:50:44,009 INFO L175 Difference]: Start difference. First operand has 482 places, 761 transitions, 20860 flow. Second operand 34 states and 288 transitions. [2024-11-19 01:50:44,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 855 transitions, 23469 flow [2024-11-19 01:50:44,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 855 transitions, 22987 flow, removed 83 selfloop flow, removed 26 redundant places. [2024-11-19 01:50:44,737 INFO L231 Difference]: Finished difference. Result has 490 places, 759 transitions, 21400 flow [2024-11-19 01:50:44,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=20410, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=480, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=21400, PETRI_PLACES=490, PETRI_TRANSITIONS=759} [2024-11-19 01:50:44,738 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 466 predicate places. [2024-11-19 01:50:44,738 INFO L471 AbstractCegarLoop]: Abstraction has has 490 places, 759 transitions, 21400 flow [2024-11-19 01:50:44,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.448275862068965) internal successors, (129), 29 states have internal predecessors, (129), 0 states have call successors, (0), 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 01:50:44,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:44,738 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:44,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:44,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-19 01:50:44,943 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:44,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:44,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1746344626, now seen corresponding path program 16 times [2024-11-19 01:50:44,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:44,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044158234] [2024-11-19 01:50:44,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:44,949 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:44,949 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:50:45,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:45,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044158234] [2024-11-19 01:50:45,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044158234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:45,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828427618] [2024-11-19 01:50:45,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:45,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:45,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:45,096 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:45,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 01:50:45,141 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:45,142 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:45,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 01:50:45,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:45,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:45,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828427618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:45,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:45,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2024-11-19 01:50:45,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282996529] [2024-11-19 01:50:45,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:45,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 01:50:45,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:45,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 01:50:45,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2024-11-19 01:50:45,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:45,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 759 transitions, 21400 flow. Second operand has 30 states, 30 states have (on average 4.7) internal successors, (141), 30 states have internal predecessors, (141), 0 states have call successors, (0), 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 01:50:45,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:45,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:45,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:48,676 INFO L124 PetriNetUnfolderBase]: 2045/3885 cut-off events. [2024-11-19 01:50:48,677 INFO L125 PetriNetUnfolderBase]: For 194300/194300 co-relation queries the response was YES. [2024-11-19 01:50:48,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48366 conditions, 3885 events. 2045/3885 cut-off events. For 194300/194300 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 26887 event pairs, 171 based on Foata normal form. 21/3906 useless extension candidates. Maximal degree in co-relation 48110. Up to 1363 conditions per place. [2024-11-19 01:50:48,728 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 379 selfloop transitions, 712 changer transitions 12/1104 dead transitions. [2024-11-19 01:50:48,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 1104 transitions, 31212 flow [2024-11-19 01:50:48,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-19 01:50:48,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2024-11-19 01:50:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 616 transitions. [2024-11-19 01:50:48,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34146341463414637 [2024-11-19 01:50:48,730 INFO L175 Difference]: Start difference. First operand has 490 places, 759 transitions, 21400 flow. Second operand 82 states and 616 transitions. [2024-11-19 01:50:48,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 1104 transitions, 31212 flow [2024-11-19 01:50:49,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1104 transitions, 29934 flow, removed 43 selfloop flow, removed 31 redundant places. [2024-11-19 01:50:49,766 INFO L231 Difference]: Finished difference. Result has 554 places, 958 transitions, 28705 flow [2024-11-19 01:50:49,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=20424, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=28705, PETRI_PLACES=554, PETRI_TRANSITIONS=958} [2024-11-19 01:50:49,767 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 530 predicate places. [2024-11-19 01:50:49,767 INFO L471 AbstractCegarLoop]: Abstraction has has 554 places, 958 transitions, 28705 flow [2024-11-19 01:50:49,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.7) internal successors, (141), 30 states have internal predecessors, (141), 0 states have call successors, (0), 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 01:50:49,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:49,767 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:49,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:49,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:49,973 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:49,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:49,973 INFO L85 PathProgramCache]: Analyzing trace with hash 643665236, now seen corresponding path program 17 times [2024-11-19 01:50:49,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:49,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801599034] [2024-11-19 01:50:49,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:49,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:49,977 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:50:49,978 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:50:50,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801599034] [2024-11-19 01:50:50,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801599034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:50,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883537879] [2024-11-19 01:50:50,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:50,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:50,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:50,093 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:50,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 01:50:50,131 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:50:50,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:50,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 01:50:50,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:50,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:50,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883537879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:50,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:50,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2024-11-19 01:50:50,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82523752] [2024-11-19 01:50:50,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:50,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 01:50:50,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:50,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 01:50:50,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2024-11-19 01:50:50,476 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:50,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 958 transitions, 28705 flow. Second operand has 30 states, 30 states have (on average 4.7) internal successors, (141), 30 states have internal predecessors, (141), 0 states have call successors, (0), 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 01:50:50,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:50,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:50,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:53,196 INFO L124 PetriNetUnfolderBase]: 2063/3927 cut-off events. [2024-11-19 01:50:53,196 INFO L125 PetriNetUnfolderBase]: For 265428/265428 co-relation queries the response was YES. [2024-11-19 01:50:53,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52577 conditions, 3927 events. 2063/3927 cut-off events. For 265428/265428 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 27306 event pairs, 156 based on Foata normal form. 3/3930 useless extension candidates. Maximal degree in co-relation 52431. Up to 1592 conditions per place. [2024-11-19 01:50:53,265 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 367 selfloop transitions, 684 changer transitions 12/1064 dead transitions. [2024-11-19 01:50:53,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 1064 transitions, 32417 flow [2024-11-19 01:50:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-19 01:50:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-19 01:50:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 359 transitions. [2024-11-19 01:50:53,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3471953578336557 [2024-11-19 01:50:53,266 INFO L175 Difference]: Start difference. First operand has 554 places, 958 transitions, 28705 flow. Second operand 47 states and 359 transitions. [2024-11-19 01:50:53,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 1064 transitions, 32417 flow [2024-11-19 01:50:55,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 1064 transitions, 31385 flow, removed 411 selfloop flow, removed 17 redundant places. [2024-11-19 01:50:55,132 INFO L231 Difference]: Finished difference. Result has 586 places, 975 transitions, 29774 flow [2024-11-19 01:50:55,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=27755, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=667, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=29774, PETRI_PLACES=586, PETRI_TRANSITIONS=975} [2024-11-19 01:50:55,133 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 562 predicate places. [2024-11-19 01:50:55,133 INFO L471 AbstractCegarLoop]: Abstraction has has 586 places, 975 transitions, 29774 flow [2024-11-19 01:50:55,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.7) internal successors, (141), 30 states have internal predecessors, (141), 0 states have call successors, (0), 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 01:50:55,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:55,134 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:55,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 01:50:55,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:55,334 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:55,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1517405916, now seen corresponding path program 18 times [2024-11-19 01:50:55,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:55,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310800416] [2024-11-19 01:50:55,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:55,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:55,339 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:50:55,340 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:55,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310800416] [2024-11-19 01:50:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310800416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896167679] [2024-11-19 01:50:55,500 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:55,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:55,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:55,501 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:55,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 01:50:55,536 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:50:55,536 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:55,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 01:50:55,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:55,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:55,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896167679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:55,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:55,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-19 01:50:55,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113757743] [2024-11-19 01:50:55,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:55,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 01:50:55,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:55,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 01:50:55,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2024-11-19 01:50:55,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:50:55,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 975 transitions, 29774 flow. Second operand has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 01:50:55,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:55,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:50:55,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:00,435 INFO L124 PetriNetUnfolderBase]: 2610/4968 cut-off events. [2024-11-19 01:51:00,435 INFO L125 PetriNetUnfolderBase]: For 342962/342962 co-relation queries the response was YES. [2024-11-19 01:51:00,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68099 conditions, 4968 events. 2610/4968 cut-off events. For 342962/342962 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 35939 event pairs, 116 based on Foata normal form. 7/4975 useless extension candidates. Maximal degree in co-relation 67948. Up to 1630 conditions per place. [2024-11-19 01:51:00,506 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 473 selfloop transitions, 923 changer transitions 21/1418 dead transitions. [2024-11-19 01:51:00,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 1418 transitions, 43501 flow [2024-11-19 01:51:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-19 01:51:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2024-11-19 01:51:00,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 725 transitions. [2024-11-19 01:51:00,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33287419651056016 [2024-11-19 01:51:00,654 INFO L175 Difference]: Start difference. First operand has 586 places, 975 transitions, 29774 flow. Second operand 99 states and 725 transitions. [2024-11-19 01:51:00,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 1418 transitions, 43501 flow [2024-11-19 01:51:02,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 1418 transitions, 42875 flow, removed 49 selfloop flow, removed 19 redundant places. [2024-11-19 01:51:02,792 INFO L231 Difference]: Finished difference. Result has 690 places, 1225 transitions, 40306 flow [2024-11-19 01:51:02,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=29267, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=692, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=40306, PETRI_PLACES=690, PETRI_TRANSITIONS=1225} [2024-11-19 01:51:02,794 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 666 predicate places. [2024-11-19 01:51:02,794 INFO L471 AbstractCegarLoop]: Abstraction has has 690 places, 1225 transitions, 40306 flow [2024-11-19 01:51:02,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 01:51:02,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:02,795 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:02,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 01:51:02,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:02,995 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:51:02,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1059217674, now seen corresponding path program 19 times [2024-11-19 01:51:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:02,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899590433] [2024-11-19 01:51:02,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:51:02,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:03,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:03,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899590433] [2024-11-19 01:51:03,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899590433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:03,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510995898] [2024-11-19 01:51:03,231 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:51:03,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:03,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:03,232 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:51:03,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 01:51:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:03,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 01:51:03,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:03,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:03,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510995898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:03,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:03,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-19 01:51:03,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557794570] [2024-11-19 01:51:03,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:03,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 01:51:03,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:03,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 01:51:03,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2024-11-19 01:51:03,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:51:03,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 1225 transitions, 40306 flow. Second operand has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 01:51:03,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:03,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:51:03,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:12,657 INFO L124 PetriNetUnfolderBase]: 4133/7876 cut-off events. [2024-11-19 01:51:12,657 INFO L125 PetriNetUnfolderBase]: For 688543/688543 co-relation queries the response was YES. [2024-11-19 01:51:12,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117150 conditions, 7876 events. 4133/7876 cut-off events. For 688543/688543 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 61658 event pairs, 67 based on Foata normal form. 15/7891 useless extension candidates. Maximal degree in co-relation 116966. Up to 1907 conditions per place. [2024-11-19 01:51:12,822 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 518 selfloop transitions, 1724 changer transitions 32/2275 dead transitions. [2024-11-19 01:51:12,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 856 places, 2275 transitions, 74102 flow [2024-11-19 01:51:12,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2024-11-19 01:51:12,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2024-11-19 01:51:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 1293 transitions. [2024-11-19 01:51:12,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3417019027484144 [2024-11-19 01:51:12,826 INFO L175 Difference]: Start difference. First operand has 690 places, 1225 transitions, 40306 flow. Second operand 172 states and 1293 transitions. [2024-11-19 01:51:12,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 856 places, 2275 transitions, 74102 flow [2024-11-19 01:51:18,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 2275 transitions, 72916 flow, removed 407 selfloop flow, removed 28 redundant places. [2024-11-19 01:51:18,065 INFO L231 Difference]: Finished difference. Result has 875 places, 1943 transitions, 69339 flow [2024-11-19 01:51:18,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=39421, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1057, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=172, PETRI_FLOW=69339, PETRI_PLACES=875, PETRI_TRANSITIONS=1943} [2024-11-19 01:51:18,066 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 851 predicate places. [2024-11-19 01:51:18,066 INFO L471 AbstractCegarLoop]: Abstraction has has 875 places, 1943 transitions, 69339 flow [2024-11-19 01:51:18,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 01:51:18,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:18,067 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:18,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-19 01:51:18,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-19 01:51:18,267 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:51:18,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1502505524, now seen corresponding path program 20 times [2024-11-19 01:51:18,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:18,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818344813] [2024-11-19 01:51:18,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:51:18,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:18,278 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:51:18,278 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:18,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:18,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818344813] [2024-11-19 01:51:18,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818344813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:18,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838818613] [2024-11-19 01:51:18,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:51:18,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:18,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:18,438 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:51:18,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 01:51:18,473 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:51:18,473 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:18,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 01:51:18,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:18,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:18,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838818613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:18,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:18,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-19 01:51:18,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331327365] [2024-11-19 01:51:18,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:18,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 01:51:18,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:18,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 01:51:18,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2024-11-19 01:51:18,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:51:18,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 875 places, 1943 transitions, 69339 flow. Second operand has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 01:51:18,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:18,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:51:18,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:25,443 INFO L124 PetriNetUnfolderBase]: 4196/7975 cut-off events. [2024-11-19 01:51:25,443 INFO L125 PetriNetUnfolderBase]: For 1185803/1185803 co-relation queries the response was YES. [2024-11-19 01:51:25,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135588 conditions, 7975 events. 4196/7975 cut-off events. For 1185803/1185803 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 62418 event pairs, 301 based on Foata normal form. 3/7978 useless extension candidates. Maximal degree in co-relation 135357. Up to 4257 conditions per place. [2024-11-19 01:51:25,567 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 810 selfloop transitions, 1286 changer transitions 12/2109 dead transitions. [2024-11-19 01:51:25,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 939 places, 2109 transitions, 77535 flow [2024-11-19 01:51:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-19 01:51:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-11-19 01:51:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 513 transitions. [2024-11-19 01:51:25,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33311688311688314 [2024-11-19 01:51:25,568 INFO L175 Difference]: Start difference. First operand has 875 places, 1943 transitions, 69339 flow. Second operand 70 states and 513 transitions. [2024-11-19 01:51:25,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 939 places, 2109 transitions, 77535 flow [2024-11-19 01:51:34,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 905 places, 2109 transitions, 74120 flow, removed 1499 selfloop flow, removed 34 redundant places. [2024-11-19 01:51:35,002 INFO L231 Difference]: Finished difference. Result has 914 places, 1980 transitions, 71705 flow [2024-11-19 01:51:35,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=66037, PETRI_DIFFERENCE_MINUEND_PLACES=836, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=71705, PETRI_PLACES=914, PETRI_TRANSITIONS=1980} [2024-11-19 01:51:35,005 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 890 predicate places. [2024-11-19 01:51:35,005 INFO L471 AbstractCegarLoop]: Abstraction has has 914 places, 1980 transitions, 71705 flow [2024-11-19 01:51:35,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 01:51:35,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:35,005 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:35,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-19 01:51:35,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-19 01:51:35,209 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:51:35,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1329257832, now seen corresponding path program 21 times [2024-11-19 01:51:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147269815] [2024-11-19 01:51:35,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:51:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:35,219 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:51:35,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:35,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:35,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147269815] [2024-11-19 01:51:35,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147269815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:35,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158919070] [2024-11-19 01:51:35,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:51:35,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:35,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:35,387 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:51:35,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 01:51:35,427 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:51:35,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:35,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 01:51:35,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:35,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:35,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158919070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:35,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:35,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-19 01:51:35,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925613704] [2024-11-19 01:51:35,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:35,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 01:51:35,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:35,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 01:51:35,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-11-19 01:51:35,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-19 01:51:35,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 914 places, 1980 transitions, 71705 flow. Second operand has 31 states, 31 states have (on average 4.645161290322581) internal successors, (144), 31 states have internal predecessors, (144), 0 states have call successors, (0), 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 01:51:35,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:35,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-19 01:51:35,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:42,470 INFO L124 PetriNetUnfolderBase]: 4204/7999 cut-off events. [2024-11-19 01:51:42,471 INFO L125 PetriNetUnfolderBase]: For 1172903/1172903 co-relation queries the response was YES. [2024-11-19 01:51:42,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134530 conditions, 7999 events. 4204/7999 cut-off events. For 1172903/1172903 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 62655 event pairs, 304 based on Foata normal form. 3/8002 useless extension candidates. Maximal degree in co-relation 134309. Up to 4394 conditions per place. [2024-11-19 01:51:42,603 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 800 selfloop transitions, 1288 changer transitions 12/2101 dead transitions. [2024-11-19 01:51:42,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 970 places, 2101 transitions, 78266 flow [2024-11-19 01:51:42,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-19 01:51:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-19 01:51:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 446 transitions. [2024-11-19 01:51:42,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3378787878787879 [2024-11-19 01:51:42,608 INFO L175 Difference]: Start difference. First operand has 914 places, 1980 transitions, 71705 flow. Second operand 60 states and 446 transitions. [2024-11-19 01:51:42,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 970 places, 2101 transitions, 78266 flow