./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/fibonacci.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 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:42:22,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:42:22,542 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:42:22,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:42:22,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:42:22,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:42:22,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:42:22,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:42:22,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:42:22,575 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:42:22,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:42:22,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:42:22,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:42:22,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:42:22,576 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:42:22,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:42:22,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:42:22,577 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:42:22,577 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:42:22,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:42:22,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:42:22,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:42:22,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:42:22,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:42:22,581 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:42:22,581 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:42:22,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:42:22,582 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:42:22,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:42:22,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:42:22,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:42:22,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:42:22,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:42:22,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:42:22,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:42:22,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:42:22,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:42:22,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:42:22,584 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:42:22,584 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:42:22,584 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:42:22,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:42:22,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-11-09 02:42:22,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:42:22,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:42:22,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:42:22,809 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:42:22,809 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:42:22,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-09 02:42:24,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:42:24,196 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:42:24,196 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-09 02:42:24,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/505bb1f96/587c5f136b2a467295434de73bdb22e0/FLAG6cfbaf197 [2024-11-09 02:42:24,598 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/505bb1f96/587c5f136b2a467295434de73bdb22e0 [2024-11-09 02:42:24,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:42:24,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:42:24,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:42:24,607 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:42:24,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:42:24,612 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc35b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24, skipping insertion in model container [2024-11-09 02:42:24,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,636 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:42:24,805 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/fibonacci.wvr.c[2356,2369] [2024-11-09 02:42:24,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:42:24,818 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:42:24,840 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/fibonacci.wvr.c[2356,2369] [2024-11-09 02:42:24,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:42:24,858 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:42:24,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24 WrapperNode [2024-11-09 02:42:24,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:42:24,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:42:24,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:42:24,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:42:24,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,871 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,888 INFO L138 Inliner]: procedures = 22, calls = 18, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 160 [2024-11-09 02:42:24,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:42:24,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:42:24,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:42:24,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:42:24,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,933 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]. [2024-11-09 02:42:24,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,945 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,952 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:42:24,953 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:42:24,953 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:42:24,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:42:24,954 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (1/1) ... [2024-11-09 02:42:24,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:42:24,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:24,987 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) [2024-11-09 02:42:24,990 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 [2024-11-09 02:42:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:42:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:42:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:42:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:42:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:42:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:42:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:42:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:42:25,032 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:42:25,125 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:42:25,127 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:42:25,392 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:42:25,393 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:42:25,621 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:42:25,621 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 02:42:25,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:42:25 BoogieIcfgContainer [2024-11-09 02:42:25,622 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:42:25,625 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:42:25,625 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:42:25,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:42:25,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:42:24" (1/3) ... [2024-11-09 02:42:25,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a24630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:42:25, skipping insertion in model container [2024-11-09 02:42:25,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:42:24" (2/3) ... [2024-11-09 02:42:25,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a24630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:42:25, skipping insertion in model container [2024-11-09 02:42:25,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:42:25" (3/3) ... [2024-11-09 02:42:25,631 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-11-09 02:42:25,647 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:42:25,647 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:42:25,647 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:42:25,687 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:42:25,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2024-11-09 02:42:25,741 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-09 02:42:25,741 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:42:25,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-09 02:42:25,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2024-11-09 02:42:25,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2024-11-09 02:42:25,755 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:42:25,761 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;@ef01dba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:42:25,762 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:42:25,769 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:42:25,769 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-09 02:42:25,769 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:42:25,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:25,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:25,771 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:25,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:25,776 INFO L85 PathProgramCache]: Analyzing trace with hash 885364131, now seen corresponding path program 1 times [2024-11-09 02:42:25,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:25,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441791083] [2024-11-09 02:42:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:25,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:26,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:26,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441791083] [2024-11-09 02:42:26,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441791083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:26,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:26,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:26,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190021318] [2024-11-09 02:42:26,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:26,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:26,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:26,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:26,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:26,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:26,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:26,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:26,447 INFO L124 PetriNetUnfolderBase]: 67/128 cut-off events. [2024-11-09 02:42:26,448 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-09 02:42:26,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 128 events. 67/128 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 341 event pairs, 14 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 222. Up to 72 conditions per place. [2024-11-09 02:42:26,451 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 25 selfloop transitions, 5 changer transitions 4/35 dead transitions. [2024-11-09 02:42:26,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 35 transitions, 168 flow [2024-11-09 02:42:26,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:26,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-11-09 02:42:26,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-09 02:42:26,463 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 5 states and 50 transitions. [2024-11-09 02:42:26,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 35 transitions, 168 flow [2024-11-09 02:42:26,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:26,468 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 68 flow [2024-11-09 02:42:26,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-11-09 02:42:26,472 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2024-11-09 02:42:26,472 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 68 flow [2024-11-09 02:42:26,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:26,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:26,473 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:26,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:42:26,473 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:26,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:26,473 INFO L85 PathProgramCache]: Analyzing trace with hash 786232087, now seen corresponding path program 2 times [2024-11-09 02:42:26,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:26,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197160565] [2024-11-09 02:42:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:26,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:26,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:26,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197160565] [2024-11-09 02:42:26,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197160565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:26,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:26,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:26,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331909673] [2024-11-09 02:42:26,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:26,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:26,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:26,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:26,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:26,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:26,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:26,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:26,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:26,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:26,774 INFO L124 PetriNetUnfolderBase]: 66/121 cut-off events. [2024-11-09 02:42:26,776 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-09 02:42:26,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 121 events. 66/121 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 326 event pairs, 11 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 325. Up to 72 conditions per place. [2024-11-09 02:42:26,778 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 24 selfloop transitions, 6 changer transitions 4/35 dead transitions. [2024-11-09 02:42:26,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 182 flow [2024-11-09 02:42:26,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:26,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:26,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2024-11-09 02:42:26,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-11-09 02:42:26,781 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 68 flow. Second operand 5 states and 49 transitions. [2024-11-09 02:42:26,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 182 flow [2024-11-09 02:42:26,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 180 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:26,784 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 100 flow [2024-11-09 02:42:26,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2024-11-09 02:42:26,786 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 8 predicate places. [2024-11-09 02:42:26,786 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 100 flow [2024-11-09 02:42:26,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:26,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:26,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:26,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:42:26,786 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:26,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:26,787 INFO L85 PathProgramCache]: Analyzing trace with hash 130402592, now seen corresponding path program 1 times [2024-11-09 02:42:26,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:26,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507317812] [2024-11-09 02:42:26,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:26,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:26,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:26,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507317812] [2024-11-09 02:42:26,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507317812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:26,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:26,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:26,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087851697] [2024-11-09 02:42:26,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:26,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:26,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:26,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:26,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:26,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:26,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:26,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:26,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:26,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:26,947 INFO L124 PetriNetUnfolderBase]: 80/140 cut-off events. [2024-11-09 02:42:26,949 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-11-09 02:42:26,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 140 events. 80/140 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 394 event pairs, 25 based on Foata normal form. 3/134 useless extension candidates. Maximal degree in co-relation 456. Up to 102 conditions per place. [2024-11-09 02:42:26,950 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 24 selfloop transitions, 10 changer transitions 3/38 dead transitions. [2024-11-09 02:42:26,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 256 flow [2024-11-09 02:42:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2024-11-09 02:42:26,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:42:26,952 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 100 flow. Second operand 5 states and 45 transitions. [2024-11-09 02:42:26,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 256 flow [2024-11-09 02:42:26,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 242 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:26,957 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 168 flow [2024-11-09 02:42:26,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2024-11-09 02:42:26,958 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 12 predicate places. [2024-11-09 02:42:26,958 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 168 flow [2024-11-09 02:42:26,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:26,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:26,959 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:26,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:42:26,959 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:26,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1679495154, now seen corresponding path program 2 times [2024-11-09 02:42:26,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:26,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767177205] [2024-11-09 02:42:26,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:26,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:27,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767177205] [2024-11-09 02:42:27,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767177205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:27,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:27,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:27,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538190553] [2024-11-09 02:42:27,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:27,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:27,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:27,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:27,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:27,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:27,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:27,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:27,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:27,116 INFO L124 PetriNetUnfolderBase]: 82/151 cut-off events. [2024-11-09 02:42:27,116 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-11-09 02:42:27,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 151 events. 82/151 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 442 event pairs, 24 based on Foata normal form. 3/142 useless extension candidates. Maximal degree in co-relation 509. Up to 80 conditions per place. [2024-11-09 02:42:27,117 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 32 selfloop transitions, 7 changer transitions 5/45 dead transitions. [2024-11-09 02:42:27,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 322 flow [2024-11-09 02:42:27,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2024-11-09 02:42:27,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-11-09 02:42:27,120 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 168 flow. Second operand 5 states and 49 transitions. [2024-11-09 02:42:27,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 322 flow [2024-11-09 02:42:27,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 301 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:27,122 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 167 flow [2024-11-09 02:42:27,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-11-09 02:42:27,124 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2024-11-09 02:42:27,124 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 167 flow [2024-11-09 02:42:27,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:27,125 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:27,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:42:27,125 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:27,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:27,125 INFO L85 PathProgramCache]: Analyzing trace with hash -195788256, now seen corresponding path program 3 times [2024-11-09 02:42:27,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:27,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206147992] [2024-11-09 02:42:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:27,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:27,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:27,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206147992] [2024-11-09 02:42:27,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206147992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:27,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:27,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:27,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309628165] [2024-11-09 02:42:27,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:27,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:27,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:27,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:27,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:27,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:27,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:27,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:27,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:27,249 INFO L124 PetriNetUnfolderBase]: 89/160 cut-off events. [2024-11-09 02:42:27,249 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2024-11-09 02:42:27,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 160 events. 89/160 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 462 event pairs, 35 based on Foata normal form. 3/146 useless extension candidates. Maximal degree in co-relation 580. Up to 130 conditions per place. [2024-11-09 02:42:27,251 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 23 selfloop transitions, 12 changer transitions 4/40 dead transitions. [2024-11-09 02:42:27,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 315 flow [2024-11-09 02:42:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 44 transitions. [2024-11-09 02:42:27,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-09 02:42:27,252 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 167 flow. Second operand 5 states and 44 transitions. [2024-11-09 02:42:27,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 315 flow [2024-11-09 02:42:27,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:27,256 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 218 flow [2024-11-09 02:42:27,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2024-11-09 02:42:27,258 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 18 predicate places. [2024-11-09 02:42:27,258 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 218 flow [2024-11-09 02:42:27,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:27,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:27,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:42:27,260 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:27,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:27,260 INFO L85 PathProgramCache]: Analyzing trace with hash -803180865, now seen corresponding path program 1 times [2024-11-09 02:42:27,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:27,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225581707] [2024-11-09 02:42:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:27,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:27,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:27,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225581707] [2024-11-09 02:42:27,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225581707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:27,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:27,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:27,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10481619] [2024-11-09 02:42:27,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:27,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:27,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:27,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:27,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:27,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:27,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:27,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:27,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:27,381 INFO L124 PetriNetUnfolderBase]: 92/160 cut-off events. [2024-11-09 02:42:27,381 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-11-09 02:42:27,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 160 events. 92/160 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 445 event pairs, 12 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 645. Up to 77 conditions per place. [2024-11-09 02:42:27,382 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 39 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-11-09 02:42:27,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 395 flow [2024-11-09 02:42:27,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:27,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2024-11-09 02:42:27,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-11-09 02:42:27,383 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 218 flow. Second operand 5 states and 52 transitions. [2024-11-09 02:42:27,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 395 flow [2024-11-09 02:42:27,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 350 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-09 02:42:27,386 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 224 flow [2024-11-09 02:42:27,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-11-09 02:42:27,386 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 17 predicate places. [2024-11-09 02:42:27,386 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 224 flow [2024-11-09 02:42:27,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:27,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:27,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:42:27,387 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:27,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:27,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1498961711, now seen corresponding path program 2 times [2024-11-09 02:42:27,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:27,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907200621] [2024-11-09 02:42:27,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:27,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:27,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:27,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907200621] [2024-11-09 02:42:27,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907200621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:27,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:27,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:27,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663030373] [2024-11-09 02:42:27,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:27,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:27,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:27,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:27,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:27,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:27,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:27,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:27,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:27,499 INFO L124 PetriNetUnfolderBase]: 93/171 cut-off events. [2024-11-09 02:42:27,499 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2024-11-09 02:42:27,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 171 events. 93/171 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 483 event pairs, 30 based on Foata normal form. 2/161 useless extension candidates. Maximal degree in co-relation 677. Up to 110 conditions per place. [2024-11-09 02:42:27,501 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 30 selfloop transitions, 11 changer transitions 3/45 dead transitions. [2024-11-09 02:42:27,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 361 flow [2024-11-09 02:42:27,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2024-11-09 02:42:27,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:42:27,505 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 224 flow. Second operand 5 states and 45 transitions. [2024-11-09 02:42:27,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 361 flow [2024-11-09 02:42:27,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 346 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:27,508 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 231 flow [2024-11-09 02:42:27,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-11-09 02:42:27,508 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 21 predicate places. [2024-11-09 02:42:27,509 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 231 flow [2024-11-09 02:42:27,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:27,509 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:27,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:42:27,509 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:27,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:27,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1147608036, now seen corresponding path program 4 times [2024-11-09 02:42:27,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:27,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888815849] [2024-11-09 02:42:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:27,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:27,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888815849] [2024-11-09 02:42:27,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888815849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915145809] [2024-11-09 02:42:27,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:42:27,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:27,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:27,555 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) [2024-11-09 02:42:27,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:42:27,609 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:42:27,609 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:27,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 02:42:27,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:27,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:27,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915145809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:27,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:27,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 02:42:27,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155258446] [2024-11-09 02:42:27,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:27,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:42:27,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:27,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:42:27,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:42:27,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:27,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 231 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:27,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:27,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:27,818 INFO L124 PetriNetUnfolderBase]: 97/175 cut-off events. [2024-11-09 02:42:27,818 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2024-11-09 02:42:27,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 175 events. 97/175 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 492 event pairs, 12 based on Foata normal form. 4/165 useless extension candidates. Maximal degree in co-relation 712. Up to 60 conditions per place. [2024-11-09 02:42:27,820 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 38 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-11-09 02:42:27,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 454 flow [2024-11-09 02:42:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:42:27,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:42:27,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-11-09 02:42:27,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-11-09 02:42:27,820 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 231 flow. Second operand 7 states and 62 transitions. [2024-11-09 02:42:27,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 454 flow [2024-11-09 02:42:27,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 424 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:27,823 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 285 flow [2024-11-09 02:42:27,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-11-09 02:42:27,823 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2024-11-09 02:42:27,823 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 285 flow [2024-11-09 02:42:27,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:27,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:27,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:27,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:42:28,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:28,028 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:28,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:28,028 INFO L85 PathProgramCache]: Analyzing trace with hash 496120645, now seen corresponding path program 3 times [2024-11-09 02:42:28,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:28,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997411594] [2024-11-09 02:42:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:28,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:28,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:28,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997411594] [2024-11-09 02:42:28,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997411594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:28,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:28,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:28,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585551405] [2024-11-09 02:42:28,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:28,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:28,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:28,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:28,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:28,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:28,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 285 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:28,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:28,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:28,138 INFO L124 PetriNetUnfolderBase]: 104/187 cut-off events. [2024-11-09 02:42:28,139 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2024-11-09 02:42:28,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 187 events. 104/187 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 541 event pairs, 31 based on Foata normal form. 5/192 useless extension candidates. Maximal degree in co-relation 806. Up to 138 conditions per place. [2024-11-09 02:42:28,140 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 31 selfloop transitions, 16 changer transitions 0/48 dead transitions. [2024-11-09 02:42:28,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 427 flow [2024-11-09 02:42:28,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:28,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-09 02:42:28,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-11-09 02:42:28,142 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 285 flow. Second operand 5 states and 47 transitions. [2024-11-09 02:42:28,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 427 flow [2024-11-09 02:42:28,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 407 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:28,145 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 311 flow [2024-11-09 02:42:28,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-11-09 02:42:28,146 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2024-11-09 02:42:28,146 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 311 flow [2024-11-09 02:42:28,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:28,147 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:28,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:42:28,147 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:28,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash -960995445, now seen corresponding path program 4 times [2024-11-09 02:42:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:28,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17518851] [2024-11-09 02:42:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:28,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:28,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:28,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17518851] [2024-11-09 02:42:28,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17518851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:28,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:28,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:28,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680783380] [2024-11-09 02:42:28,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:28,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:28,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:28,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:28,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:28,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:28,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:28,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:28,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:28,256 INFO L124 PetriNetUnfolderBase]: 103/188 cut-off events. [2024-11-09 02:42:28,257 INFO L125 PetriNetUnfolderBase]: For 451/451 co-relation queries the response was YES. [2024-11-09 02:42:28,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 188 events. 103/188 cut-off events. For 451/451 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 560 event pairs, 36 based on Foata normal form. 2/190 useless extension candidates. Maximal degree in co-relation 847. Up to 147 conditions per place. [2024-11-09 02:42:28,258 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 28 selfloop transitions, 14 changer transitions 2/45 dead transitions. [2024-11-09 02:42:28,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 424 flow [2024-11-09 02:42:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2024-11-09 02:42:28,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-11-09 02:42:28,259 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 311 flow. Second operand 5 states and 43 transitions. [2024-11-09 02:42:28,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 424 flow [2024-11-09 02:42:28,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 390 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:28,262 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 292 flow [2024-11-09 02:42:28,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2024-11-09 02:42:28,262 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 29 predicate places. [2024-11-09 02:42:28,262 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 292 flow [2024-11-09 02:42:28,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:28,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:28,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 02:42:28,263 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:28,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:28,263 INFO L85 PathProgramCache]: Analyzing trace with hash -102918228, now seen corresponding path program 5 times [2024-11-09 02:42:28,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:28,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558810938] [2024-11-09 02:42:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:28,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:28,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:28,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558810938] [2024-11-09 02:42:28,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558810938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:28,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:28,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719052254] [2024-11-09 02:42:28,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:28,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:28,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:28,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:28,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:28,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:28,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:28,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:28,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:28,390 INFO L124 PetriNetUnfolderBase]: 108/195 cut-off events. [2024-11-09 02:42:28,390 INFO L125 PetriNetUnfolderBase]: For 534/534 co-relation queries the response was YES. [2024-11-09 02:42:28,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 195 events. 108/195 cut-off events. For 534/534 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 575 event pairs, 36 based on Foata normal form. 4/199 useless extension candidates. Maximal degree in co-relation 862. Up to 151 conditions per place. [2024-11-09 02:42:28,392 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 31 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2024-11-09 02:42:28,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 435 flow [2024-11-09 02:42:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:28,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2024-11-09 02:42:28,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:42:28,393 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 292 flow. Second operand 5 states and 45 transitions. [2024-11-09 02:42:28,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 435 flow [2024-11-09 02:42:28,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 405 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:28,396 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 304 flow [2024-11-09 02:42:28,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-11-09 02:42:28,397 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 29 predicate places. [2024-11-09 02:42:28,397 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 304 flow [2024-11-09 02:42:28,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:28,398 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:28,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 02:42:28,398 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:28,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:28,398 INFO L85 PathProgramCache]: Analyzing trace with hash 571836441, now seen corresponding path program 5 times [2024-11-09 02:42:28,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:28,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124916144] [2024-11-09 02:42:28,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:28,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:28,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:28,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124916144] [2024-11-09 02:42:28,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124916144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:28,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53815965] [2024-11-09 02:42:28,451 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:42:28,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:28,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:28,453 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) [2024-11-09 02:42:28,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:42:28,513 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:28,513 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:28,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 02:42:28,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:28,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:28,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53815965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:28,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:28,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 02:42:28,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223204279] [2024-11-09 02:42:28,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:28,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 02:42:28,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 02:42:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:42:28,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:28,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 304 flow. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:28,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:28,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:28,666 INFO L124 PetriNetUnfolderBase]: 103/190 cut-off events. [2024-11-09 02:42:28,666 INFO L125 PetriNetUnfolderBase]: For 528/528 co-relation queries the response was YES. [2024-11-09 02:42:28,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 190 events. 103/190 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 570 event pairs, 35 based on Foata normal form. 5/195 useless extension candidates. Maximal degree in co-relation 822. Up to 149 conditions per place. [2024-11-09 02:42:28,668 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 33 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2024-11-09 02:42:28,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 433 flow [2024-11-09 02:42:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:42:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:42:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2024-11-09 02:42:28,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-11-09 02:42:28,669 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 304 flow. Second operand 6 states and 51 transitions. [2024-11-09 02:42:28,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 433 flow [2024-11-09 02:42:28,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 397 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:28,671 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 304 flow [2024-11-09 02:42:28,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-11-09 02:42:28,672 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 32 predicate places. [2024-11-09 02:42:28,672 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 304 flow [2024-11-09 02:42:28,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:28,672 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:28,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:42:28,873 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,SelfDestructingSolverStorable11 [2024-11-09 02:42:28,873 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:28,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:28,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1280825105, now seen corresponding path program 6 times [2024-11-09 02:42:28,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:28,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097123379] [2024-11-09 02:42:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:28,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:28,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:28,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097123379] [2024-11-09 02:42:28,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097123379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:28,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:28,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:28,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610611264] [2024-11-09 02:42:28,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:28,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:28,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:28,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:28,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:28,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:28,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:28,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:28,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:28,972 INFO L124 PetriNetUnfolderBase]: 99/178 cut-off events. [2024-11-09 02:42:28,973 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-11-09 02:42:28,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 178 events. 99/178 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 507 event pairs, 32 based on Foata normal form. 2/180 useless extension candidates. Maximal degree in co-relation 787. Up to 135 conditions per place. [2024-11-09 02:42:28,974 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 29 selfloop transitions, 12 changer transitions 2/44 dead transitions. [2024-11-09 02:42:28,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 44 transitions, 406 flow [2024-11-09 02:42:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:28,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2024-11-09 02:42:28,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-11-09 02:42:28,975 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 304 flow. Second operand 5 states and 41 transitions. [2024-11-09 02:42:28,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 44 transitions, 406 flow [2024-11-09 02:42:28,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 362 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-09 02:42:28,979 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 268 flow [2024-11-09 02:42:28,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-11-09 02:42:28,979 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places. [2024-11-09 02:42:28,979 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 268 flow [2024-11-09 02:42:28,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:28,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:28,979 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:28,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 02:42:28,980 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:28,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash 519243532, now seen corresponding path program 6 times [2024-11-09 02:42:28,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:28,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793341544] [2024-11-09 02:42:28,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:28,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:29,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:29,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793341544] [2024-11-09 02:42:29,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793341544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:29,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859263149] [2024-11-09 02:42:29,034 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:42:29,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:29,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:29,036 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) [2024-11-09 02:42:29,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:42:29,088 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:42:29,088 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:29,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 02:42:29,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:29,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:29,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859263149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:29,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:29,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 02:42:29,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446843089] [2024-11-09 02:42:29,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:29,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 02:42:29,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 02:42:29,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:42:29,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:29,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 268 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:29,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:29,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:29,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:29,258 INFO L124 PetriNetUnfolderBase]: 96/168 cut-off events. [2024-11-09 02:42:29,258 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2024-11-09 02:42:29,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 168 events. 96/168 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 467 event pairs, 17 based on Foata normal form. 4/172 useless extension candidates. Maximal degree in co-relation 718. Up to 65 conditions per place. [2024-11-09 02:42:29,259 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 35 selfloop transitions, 23 changer transitions 0/59 dead transitions. [2024-11-09 02:42:29,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 487 flow [2024-11-09 02:42:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:42:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:42:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 76 transitions. [2024-11-09 02:42:29,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-11-09 02:42:29,261 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 268 flow. Second operand 10 states and 76 transitions. [2024-11-09 02:42:29,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 487 flow [2024-11-09 02:42:29,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 463 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:29,263 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 337 flow [2024-11-09 02:42:29,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=337, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-11-09 02:42:29,264 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 35 predicate places. [2024-11-09 02:42:29,264 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 337 flow [2024-11-09 02:42:29,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:29,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:29,264 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:29,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:42:29,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:29,465 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:29,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:29,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1973538062, now seen corresponding path program 1 times [2024-11-09 02:42:29,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:29,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039561894] [2024-11-09 02:42:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:29,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:29,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:29,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039561894] [2024-11-09 02:42:29,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039561894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:29,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227246085] [2024-11-09 02:42:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:29,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:29,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:29,626 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) [2024-11-09 02:42:29,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:42:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:29,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:42:29,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:29,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:29,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227246085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:29,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:29,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-09 02:42:29,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660569499] [2024-11-09 02:42:29,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:29,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:42:29,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:29,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:42:29,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:42:29,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:29,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 337 flow. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:29,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:29,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:29,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:30,060 INFO L124 PetriNetUnfolderBase]: 132/235 cut-off events. [2024-11-09 02:42:30,060 INFO L125 PetriNetUnfolderBase]: For 493/493 co-relation queries the response was YES. [2024-11-09 02:42:30,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 235 events. 132/235 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 774 event pairs, 9 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 1039. Up to 158 conditions per place. [2024-11-09 02:42:30,062 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 48 selfloop transitions, 17 changer transitions 4/70 dead transitions. [2024-11-09 02:42:30,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 70 transitions, 614 flow [2024-11-09 02:42:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:42:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:42:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2024-11-09 02:42:30,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:42:30,063 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 337 flow. Second operand 7 states and 63 transitions. [2024-11-09 02:42:30,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 70 transitions, 614 flow [2024-11-09 02:42:30,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 526 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-09 02:42:30,065 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 395 flow [2024-11-09 02:42:30,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=395, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-09 02:42:30,066 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 38 predicate places. [2024-11-09 02:42:30,066 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 395 flow [2024-11-09 02:42:30,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:30,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:30,066 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:30,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:30,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 02:42:30,270 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:30,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1662875284, now seen corresponding path program 2 times [2024-11-09 02:42:30,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:30,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091110101] [2024-11-09 02:42:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:30,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:30,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091110101] [2024-11-09 02:42:30,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091110101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:30,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892478265] [2024-11-09 02:42:30,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:42:30,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:30,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:30,400 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) [2024-11-09 02:42:30,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:42:30,449 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:30,449 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:30,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:42:30,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:30,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:30,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892478265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:30,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:30,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:42:30,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521058125] [2024-11-09 02:42:30,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:30,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:42:30,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:30,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:42:30,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:42:30,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:30,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 395 flow. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:30,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:30,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:30,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:30,785 INFO L124 PetriNetUnfolderBase]: 143/259 cut-off events. [2024-11-09 02:42:30,785 INFO L125 PetriNetUnfolderBase]: For 685/685 co-relation queries the response was YES. [2024-11-09 02:42:30,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 259 events. 143/259 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 886 event pairs, 14 based on Foata normal form. 1/260 useless extension candidates. Maximal degree in co-relation 1191. Up to 161 conditions per place. [2024-11-09 02:42:30,787 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 51 selfloop transitions, 19 changer transitions 4/75 dead transitions. [2024-11-09 02:42:30,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 653 flow [2024-11-09 02:42:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:42:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:42:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-11-09 02:42:30,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-09 02:42:30,788 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 395 flow. Second operand 7 states and 66 transitions. [2024-11-09 02:42:30,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 653 flow [2024-11-09 02:42:30,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 628 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:30,791 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 470 flow [2024-11-09 02:42:30,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=470, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-11-09 02:42:30,792 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 44 predicate places. [2024-11-09 02:42:30,792 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 470 flow [2024-11-09 02:42:30,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:30,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:30,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:30,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 02:42:30,996 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,SelfDestructingSolverStorable15 [2024-11-09 02:42:30,997 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:30,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1579758394, now seen corresponding path program 3 times [2024-11-09 02:42:30,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:30,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198970420] [2024-11-09 02:42:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:30,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:31,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198970420] [2024-11-09 02:42:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198970420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749337691] [2024-11-09 02:42:31,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:42:31,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:31,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:31,115 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) [2024-11-09 02:42:31,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:42:31,161 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:42:31,161 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:31,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:42:31,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:31,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:31,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:31,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749337691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:31,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:31,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:42:31,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172824541] [2024-11-09 02:42:31,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:31,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:31,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:31,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:31,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:31,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:31,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 470 flow. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:31,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:31,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:31,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:31,494 INFO L124 PetriNetUnfolderBase]: 141/251 cut-off events. [2024-11-09 02:42:31,494 INFO L125 PetriNetUnfolderBase]: For 899/899 co-relation queries the response was YES. [2024-11-09 02:42:31,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 251 events. 141/251 cut-off events. For 899/899 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 842 event pairs, 14 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 1244. Up to 161 conditions per place. [2024-11-09 02:42:31,496 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 48 selfloop transitions, 20 changer transitions 4/73 dead transitions. [2024-11-09 02:42:31,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 693 flow [2024-11-09 02:42:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:42:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:42:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2024-11-09 02:42:31,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:42:31,497 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 470 flow. Second operand 7 states and 63 transitions. [2024-11-09 02:42:31,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 693 flow [2024-11-09 02:42:31,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 636 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:31,500 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 503 flow [2024-11-09 02:42:31,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=503, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-11-09 02:42:31,501 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 49 predicate places. [2024-11-09 02:42:31,501 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 503 flow [2024-11-09 02:42:31,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:31,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:31,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:31,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 02:42:31,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 02:42:31,706 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:31,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:31,706 INFO L85 PathProgramCache]: Analyzing trace with hash -846354170, now seen corresponding path program 4 times [2024-11-09 02:42:31,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:31,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515857879] [2024-11-09 02:42:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:31,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:31,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:31,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515857879] [2024-11-09 02:42:31,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515857879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:31,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530667646] [2024-11-09 02:42:31,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:42:31,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:31,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:31,837 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) [2024-11-09 02:42:31,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:42:31,885 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:42:31,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:31,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:42:31,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:31,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530667646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:32,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:32,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 02:42:32,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547968205] [2024-11-09 02:42:32,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:32,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:42:32,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:42:32,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:42:32,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:32,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 503 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:32,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:32,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:32,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:32,233 INFO L124 PetriNetUnfolderBase]: 166/294 cut-off events. [2024-11-09 02:42:32,234 INFO L125 PetriNetUnfolderBase]: For 985/985 co-relation queries the response was YES. [2024-11-09 02:42:32,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 294 events. 166/294 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1044 event pairs, 18 based on Foata normal form. 1/295 useless extension candidates. Maximal degree in co-relation 1472. Up to 235 conditions per place. [2024-11-09 02:42:32,236 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 58 selfloop transitions, 19 changer transitions 4/82 dead transitions. [2024-11-09 02:42:32,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 800 flow [2024-11-09 02:42:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:42:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:42:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 57 transitions. [2024-11-09 02:42:32,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-11-09 02:42:32,237 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 503 flow. Second operand 7 states and 57 transitions. [2024-11-09 02:42:32,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 800 flow [2024-11-09 02:42:32,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 753 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:32,241 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 628 flow [2024-11-09 02:42:32,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=628, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-11-09 02:42:32,242 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 54 predicate places. [2024-11-09 02:42:32,242 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 628 flow [2024-11-09 02:42:32,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:32,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:32,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:32,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 02:42:32,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:32,443 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:32,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:32,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1647747176, now seen corresponding path program 5 times [2024-11-09 02:42:32,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:32,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934084600] [2024-11-09 02:42:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:32,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:32,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934084600] [2024-11-09 02:42:32,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934084600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939480244] [2024-11-09 02:42:32,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:42:32,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:32,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:32,547 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) [2024-11-09 02:42:32,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 02:42:32,594 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 02:42:32,594 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:32,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:42:32,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:32,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:32,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939480244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:32,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:32,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:42:32,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469763629] [2024-11-09 02:42:32,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:32,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:32,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:32,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:32,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:32,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:32,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 628 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:32,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:32,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:32,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:32,962 INFO L124 PetriNetUnfolderBase]: 178/319 cut-off events. [2024-11-09 02:42:32,963 INFO L125 PetriNetUnfolderBase]: For 1314/1314 co-relation queries the response was YES. [2024-11-09 02:42:32,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 319 events. 178/319 cut-off events. For 1314/1314 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1157 event pairs, 17 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1692. Up to 238 conditions per place. [2024-11-09 02:42:32,965 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 65 selfloop transitions, 20 changer transitions 4/90 dead transitions. [2024-11-09 02:42:32,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 934 flow [2024-11-09 02:42:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:42:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:42:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-11-09 02:42:32,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-11-09 02:42:32,966 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 628 flow. Second operand 7 states and 62 transitions. [2024-11-09 02:42:32,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 934 flow [2024-11-09 02:42:32,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 895 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:32,972 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 707 flow [2024-11-09 02:42:32,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=707, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-11-09 02:42:32,973 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 60 predicate places. [2024-11-09 02:42:32,973 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 707 flow [2024-11-09 02:42:32,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:32,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:32,973 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:32,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:33,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:33,178 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:33,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:33,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1730864066, now seen corresponding path program 6 times [2024-11-09 02:42:33,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:33,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019393122] [2024-11-09 02:42:33,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:33,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:33,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:33,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019393122] [2024-11-09 02:42:33,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019393122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:33,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460773402] [2024-11-09 02:42:33,320 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:42:33,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:33,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:33,321 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) [2024-11-09 02:42:33,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 02:42:33,369 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:42:33,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:33,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:42:33,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:33,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:33,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460773402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:33,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:33,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:42:33,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247584182] [2024-11-09 02:42:33,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:33,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:42:33,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:33,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:42:33,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:42:33,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:33,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 707 flow. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:33,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:33,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:33,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:33,710 INFO L124 PetriNetUnfolderBase]: 176/311 cut-off events. [2024-11-09 02:42:33,710 INFO L125 PetriNetUnfolderBase]: For 1593/1593 co-relation queries the response was YES. [2024-11-09 02:42:33,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 311 events. 176/311 cut-off events. For 1593/1593 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1115 event pairs, 17 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 1722. Up to 238 conditions per place. [2024-11-09 02:42:33,713 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 63 selfloop transitions, 21 changer transitions 4/89 dead transitions. [2024-11-09 02:42:33,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 971 flow [2024-11-09 02:42:33,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:42:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:42:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 60 transitions. [2024-11-09 02:42:33,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-09 02:42:33,713 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 707 flow. Second operand 7 states and 60 transitions. [2024-11-09 02:42:33,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 971 flow [2024-11-09 02:42:33,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 891 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:33,719 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 729 flow [2024-11-09 02:42:33,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-11-09 02:42:33,719 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 65 predicate places. [2024-11-09 02:42:33,719 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 729 flow [2024-11-09 02:42:33,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:33,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:33,720 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:33,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 02:42:33,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:33,920 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:33,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:33,921 INFO L85 PathProgramCache]: Analyzing trace with hash -458812811, now seen corresponding path program 7 times [2024-11-09 02:42:33,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:33,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805849056] [2024-11-09 02:42:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:33,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:33,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:33,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805849056] [2024-11-09 02:42:33,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805849056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:33,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687126226] [2024-11-09 02:42:33,974 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:42:33,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:33,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:33,976 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) [2024-11-09 02:42:33,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 02:42:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:34,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:34,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:34,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:34,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687126226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:34,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:34,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 02:42:34,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47611742] [2024-11-09 02:42:34,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:34,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:42:34,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:34,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:42:34,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:42:34,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:34,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 729 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:34,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:34,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:34,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:34,186 INFO L124 PetriNetUnfolderBase]: 190/340 cut-off events. [2024-11-09 02:42:34,186 INFO L125 PetriNetUnfolderBase]: For 1793/1793 co-relation queries the response was YES. [2024-11-09 02:42:34,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 340 events. 190/340 cut-off events. For 1793/1793 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1296 event pairs, 30 based on Foata normal form. 3/343 useless extension candidates. Maximal degree in co-relation 1888. Up to 129 conditions per place. [2024-11-09 02:42:34,189 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 64 selfloop transitions, 32 changer transitions 8/105 dead transitions. [2024-11-09 02:42:34,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 1160 flow [2024-11-09 02:42:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:42:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:42:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 65 transitions. [2024-11-09 02:42:34,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-11-09 02:42:34,189 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 729 flow. Second operand 7 states and 65 transitions. [2024-11-09 02:42:34,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 1160 flow [2024-11-09 02:42:34,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 1095 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:34,195 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 807 flow [2024-11-09 02:42:34,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=807, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2024-11-09 02:42:34,195 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 70 predicate places. [2024-11-09 02:42:34,196 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 807 flow [2024-11-09 02:42:34,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:34,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:34,196 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:34,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 02:42:34,399 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,SelfDestructingSolverStorable20 [2024-11-09 02:42:34,400 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:34,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:34,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2081245415, now seen corresponding path program 8 times [2024-11-09 02:42:34,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:34,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476359792] [2024-11-09 02:42:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:34,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:34,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:34,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476359792] [2024-11-09 02:42:34,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476359792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:34,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13524609] [2024-11-09 02:42:34,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:42:34,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:34,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:34,455 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) [2024-11-09 02:42:34,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 02:42:34,507 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:34,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:34,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:34,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:34,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:34,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13524609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:34,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:34,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 02:42:34,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008140138] [2024-11-09 02:42:34,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:34,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:34,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:34,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:34,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:34,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:34,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 807 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:34,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:34,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:34,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:34,721 INFO L124 PetriNetUnfolderBase]: 217/382 cut-off events. [2024-11-09 02:42:34,721 INFO L125 PetriNetUnfolderBase]: For 2645/2645 co-relation queries the response was YES. [2024-11-09 02:42:34,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2285 conditions, 382 events. 217/382 cut-off events. For 2645/2645 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1477 event pairs, 40 based on Foata normal form. 6/388 useless extension candidates. Maximal degree in co-relation 2247. Up to 191 conditions per place. [2024-11-09 02:42:34,723 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 62 selfloop transitions, 54 changer transitions 6/123 dead transitions. [2024-11-09 02:42:34,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 123 transitions, 1443 flow [2024-11-09 02:42:34,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:42:34,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:42:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 89 transitions. [2024-11-09 02:42:34,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-11-09 02:42:34,724 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 807 flow. Second operand 11 states and 89 transitions. [2024-11-09 02:42:34,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 123 transitions, 1443 flow [2024-11-09 02:42:34,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 1383 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:34,731 INFO L231 Difference]: Finished difference. Result has 99 places, 95 transitions, 1142 flow [2024-11-09 02:42:34,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1142, PETRI_PLACES=99, PETRI_TRANSITIONS=95} [2024-11-09 02:42:34,732 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 79 predicate places. [2024-11-09 02:42:34,732 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 95 transitions, 1142 flow [2024-11-09 02:42:34,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:34,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:34,732 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:34,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 02:42:34,932 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,SelfDestructingSolverStorable21 [2024-11-09 02:42:34,933 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:34,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash -448813044, now seen corresponding path program 9 times [2024-11-09 02:42:34,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:34,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056893537] [2024-11-09 02:42:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:34,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:34,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056893537] [2024-11-09 02:42:34,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056893537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995618544] [2024-11-09 02:42:34,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:42:34,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:34,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:34,990 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) [2024-11-09 02:42:34,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 02:42:35,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:42:35,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:35,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:35,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:35,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:35,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995618544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:35,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:35,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 02:42:35,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866928173] [2024-11-09 02:42:35,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:35,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:42:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:42:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:42:35,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:35,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 95 transitions, 1142 flow. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:35,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:35,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:35,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:35,236 INFO L124 PetriNetUnfolderBase]: 221/382 cut-off events. [2024-11-09 02:42:35,237 INFO L125 PetriNetUnfolderBase]: For 3141/3141 co-relation queries the response was YES. [2024-11-09 02:42:35,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2488 conditions, 382 events. 221/382 cut-off events. For 3141/3141 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1436 event pairs, 18 based on Foata normal form. 5/387 useless extension candidates. Maximal degree in co-relation 2447. Up to 106 conditions per place. [2024-11-09 02:42:35,240 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 84 selfloop transitions, 49 changer transitions 0/134 dead transitions. [2024-11-09 02:42:35,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 134 transitions, 1718 flow [2024-11-09 02:42:35,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:42:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:42:35,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-11-09 02:42:35,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:42:35,240 INFO L175 Difference]: Start difference. First operand has 99 places, 95 transitions, 1142 flow. Second operand 10 states and 90 transitions. [2024-11-09 02:42:35,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 134 transitions, 1718 flow [2024-11-09 02:42:35,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 134 transitions, 1595 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:35,250 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 1239 flow [2024-11-09 02:42:35,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1239, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2024-11-09 02:42:35,251 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 88 predicate places. [2024-11-09 02:42:35,251 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 1239 flow [2024-11-09 02:42:35,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:35,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:35,251 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:35,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:35,451 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,SelfDestructingSolverStorable22 [2024-11-09 02:42:35,452 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:35,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:35,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2052789284, now seen corresponding path program 10 times [2024-11-09 02:42:35,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:35,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612253281] [2024-11-09 02:42:35,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:35,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:35,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612253281] [2024-11-09 02:42:35,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612253281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616830035] [2024-11-09 02:42:35,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:42:35,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:35,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:35,506 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) [2024-11-09 02:42:35,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 02:42:35,560 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:42:35,560 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:35,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:35,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:35,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:35,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616830035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:35,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:35,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 02:42:35,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985368790] [2024-11-09 02:42:35,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:35,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:42:35,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:35,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:42:35,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:42:35,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:35,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 1239 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:35,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:35,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:35,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:35,856 INFO L124 PetriNetUnfolderBase]: 266/453 cut-off events. [2024-11-09 02:42:35,856 INFO L125 PetriNetUnfolderBase]: For 5440/5440 co-relation queries the response was YES. [2024-11-09 02:42:35,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3153 conditions, 453 events. 266/453 cut-off events. For 5440/5440 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1763 event pairs, 29 based on Foata normal form. 12/465 useless extension candidates. Maximal degree in co-relation 3108. Up to 162 conditions per place. [2024-11-09 02:42:35,860 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 84 selfloop transitions, 74 changer transitions 0/159 dead transitions. [2024-11-09 02:42:35,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 159 transitions, 2216 flow [2024-11-09 02:42:35,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:42:35,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:42:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 126 transitions. [2024-11-09 02:42:35,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-09 02:42:35,862 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 1239 flow. Second operand 16 states and 126 transitions. [2024-11-09 02:42:35,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 159 transitions, 2216 flow [2024-11-09 02:42:35,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 159 transitions, 1964 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-11-09 02:42:35,875 INFO L231 Difference]: Finished difference. Result has 126 places, 133 transitions, 1762 flow [2024-11-09 02:42:35,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1762, PETRI_PLACES=126, PETRI_TRANSITIONS=133} [2024-11-09 02:42:35,875 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 106 predicate places. [2024-11-09 02:42:35,876 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 133 transitions, 1762 flow [2024-11-09 02:42:35,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:35,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:35,876 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:35,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 02:42:36,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 02:42:36,077 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:36,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:36,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1733757096, now seen corresponding path program 11 times [2024-11-09 02:42:36,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:36,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260157225] [2024-11-09 02:42:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:36,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:36,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260157225] [2024-11-09 02:42:36,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260157225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:36,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830053316] [2024-11-09 02:42:36,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:42:36,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:36,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:36,129 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) [2024-11-09 02:42:36,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 02:42:36,178 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 02:42:36,178 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:36,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:36,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:36,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:36,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830053316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:36,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:36,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 02:42:36,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681788932] [2024-11-09 02:42:36,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:36,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:42:36,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:36,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:42:36,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:42:36,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:36,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 133 transitions, 1762 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:36,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:36,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:36,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:36,421 INFO L124 PetriNetUnfolderBase]: 266/457 cut-off events. [2024-11-09 02:42:36,422 INFO L125 PetriNetUnfolderBase]: For 5399/5399 co-relation queries the response was YES. [2024-11-09 02:42:36,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3313 conditions, 457 events. 266/457 cut-off events. For 5399/5399 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1810 event pairs, 37 based on Foata normal form. 4/461 useless extension candidates. Maximal degree in co-relation 3262. Up to 192 conditions per place. [2024-11-09 02:42:36,426 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 87 selfloop transitions, 65 changer transitions 2/155 dead transitions. [2024-11-09 02:42:36,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 155 transitions, 2240 flow [2024-11-09 02:42:36,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:42:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:42:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 100 transitions. [2024-11-09 02:42:36,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-11-09 02:42:36,427 INFO L175 Difference]: Start difference. First operand has 126 places, 133 transitions, 1762 flow. Second operand 13 states and 100 transitions. [2024-11-09 02:42:36,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 155 transitions, 2240 flow [2024-11-09 02:42:36,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 155 transitions, 1958 flow, removed 134 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:36,445 INFO L231 Difference]: Finished difference. Result has 138 places, 133 transitions, 1618 flow [2024-11-09 02:42:36,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1618, PETRI_PLACES=138, PETRI_TRANSITIONS=133} [2024-11-09 02:42:36,445 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 118 predicate places. [2024-11-09 02:42:36,445 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 133 transitions, 1618 flow [2024-11-09 02:42:36,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:36,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:36,446 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:36,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 02:42:36,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:36,646 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:36,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:36,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1852949592, now seen corresponding path program 12 times [2024-11-09 02:42:36,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:36,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686171677] [2024-11-09 02:42:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:36,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:36,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:36,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686171677] [2024-11-09 02:42:36,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686171677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:36,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760856610] [2024-11-09 02:42:36,719 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:42:36,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:36,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:36,720 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) [2024-11-09 02:42:36,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 02:42:36,775 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:42:36,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:36,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:36,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:36,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:36,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760856610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:36,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:36,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 02:42:36,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225867289] [2024-11-09 02:42:36,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:36,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:36,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:36,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:36,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:36,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:36,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 133 transitions, 1618 flow. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:36,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:36,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:36,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:37,066 INFO L124 PetriNetUnfolderBase]: 316/543 cut-off events. [2024-11-09 02:42:37,066 INFO L125 PetriNetUnfolderBase]: For 6293/6293 co-relation queries the response was YES. [2024-11-09 02:42:37,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3654 conditions, 543 events. 316/543 cut-off events. For 6293/6293 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2198 event pairs, 33 based on Foata normal form. 8/551 useless extension candidates. Maximal degree in co-relation 3601. Up to 194 conditions per place. [2024-11-09 02:42:37,072 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 105 selfloop transitions, 77 changer transitions 0/183 dead transitions. [2024-11-09 02:42:37,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 183 transitions, 2421 flow [2024-11-09 02:42:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:42:37,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:42:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 108 transitions. [2024-11-09 02:42:37,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-09 02:42:37,073 INFO L175 Difference]: Start difference. First operand has 138 places, 133 transitions, 1618 flow. Second operand 14 states and 108 transitions. [2024-11-09 02:42:37,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 183 transitions, 2421 flow [2024-11-09 02:42:37,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 183 transitions, 2282 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-11-09 02:42:37,090 INFO L231 Difference]: Finished difference. Result has 145 places, 157 transitions, 1979 flow [2024-11-09 02:42:37,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1979, PETRI_PLACES=145, PETRI_TRANSITIONS=157} [2024-11-09 02:42:37,090 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 125 predicate places. [2024-11-09 02:42:37,090 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 157 transitions, 1979 flow [2024-11-09 02:42:37,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:37,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:37,091 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:37,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 02:42:37,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 02:42:37,291 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:37,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1147373799, now seen corresponding path program 13 times [2024-11-09 02:42:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:37,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383954415] [2024-11-09 02:42:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:37,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:37,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:37,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383954415] [2024-11-09 02:42:37,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383954415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:37,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021616413] [2024-11-09 02:42:37,348 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:42:37,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:37,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:37,350 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) [2024-11-09 02:42:37,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 02:42:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:37,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:37,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:37,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:37,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021616413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:37,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:37,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 02:42:37,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074199608] [2024-11-09 02:42:37,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:37,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:42:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:37,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:42:37,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:42:37,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:37,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 157 transitions, 1979 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:37,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:37,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:37,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:37,679 INFO L124 PetriNetUnfolderBase]: 347/587 cut-off events. [2024-11-09 02:42:37,679 INFO L125 PetriNetUnfolderBase]: For 8314/8314 co-relation queries the response was YES. [2024-11-09 02:42:37,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 587 events. 347/587 cut-off events. For 8314/8314 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2371 event pairs, 70 based on Foata normal form. 8/595 useless extension candidates. Maximal degree in co-relation 4227. Up to 403 conditions per place. [2024-11-09 02:42:37,686 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 128 selfloop transitions, 71 changer transitions 0/200 dead transitions. [2024-11-09 02:42:37,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 200 transitions, 2860 flow [2024-11-09 02:42:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:42:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:42:37,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 129 transitions. [2024-11-09 02:42:37,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2024-11-09 02:42:37,687 INFO L175 Difference]: Start difference. First operand has 145 places, 157 transitions, 1979 flow. Second operand 17 states and 129 transitions. [2024-11-09 02:42:37,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 200 transitions, 2860 flow [2024-11-09 02:42:37,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 200 transitions, 2728 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:37,708 INFO L231 Difference]: Finished difference. Result has 161 places, 176 transitions, 2415 flow [2024-11-09 02:42:37,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2415, PETRI_PLACES=161, PETRI_TRANSITIONS=176} [2024-11-09 02:42:37,709 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 141 predicate places. [2024-11-09 02:42:37,709 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 176 transitions, 2415 flow [2024-11-09 02:42:37,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:37,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:37,709 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:37,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 02:42:37,909 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,SelfDestructingSolverStorable26 [2024-11-09 02:42:37,910 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:37,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash 725553499, now seen corresponding path program 14 times [2024-11-09 02:42:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:37,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344088841] [2024-11-09 02:42:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:37,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:37,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344088841] [2024-11-09 02:42:37,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344088841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:37,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149558878] [2024-11-09 02:42:37,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:42:37,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:37,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:37,957 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) [2024-11-09 02:42:37,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 02:42:38,004 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:38,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:38,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:38,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:38,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:38,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149558878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:38,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:38,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 02:42:38,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627318910] [2024-11-09 02:42:38,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:38,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:42:38,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:38,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:42:38,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:42:38,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:38,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 176 transitions, 2415 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:38,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:38,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:38,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:38,242 INFO L124 PetriNetUnfolderBase]: 341/581 cut-off events. [2024-11-09 02:42:38,242 INFO L125 PetriNetUnfolderBase]: For 9254/9254 co-relation queries the response was YES. [2024-11-09 02:42:38,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4441 conditions, 581 events. 341/581 cut-off events. For 9254/9254 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2377 event pairs, 67 based on Foata normal form. 9/590 useless extension candidates. Maximal degree in co-relation 4379. Up to 386 conditions per place. [2024-11-09 02:42:38,247 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 126 selfloop transitions, 64 changer transitions 4/195 dead transitions. [2024-11-09 02:42:38,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 195 transitions, 2954 flow [2024-11-09 02:42:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:42:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:42:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 97 transitions. [2024-11-09 02:42:38,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44907407407407407 [2024-11-09 02:42:38,249 INFO L175 Difference]: Start difference. First operand has 161 places, 176 transitions, 2415 flow. Second operand 12 states and 97 transitions. [2024-11-09 02:42:38,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 195 transitions, 2954 flow [2024-11-09 02:42:38,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 195 transitions, 2586 flow, removed 144 selfloop flow, removed 9 redundant places. [2024-11-09 02:42:38,272 INFO L231 Difference]: Finished difference. Result has 163 places, 172 transitions, 2160 flow [2024-11-09 02:42:38,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2023, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2160, PETRI_PLACES=163, PETRI_TRANSITIONS=172} [2024-11-09 02:42:38,275 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 143 predicate places. [2024-11-09 02:42:38,276 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 172 transitions, 2160 flow [2024-11-09 02:42:38,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:38,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:38,276 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:38,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 02:42:38,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 02:42:38,477 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:38,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:38,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1583990676, now seen corresponding path program 15 times [2024-11-09 02:42:38,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:38,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906245554] [2024-11-09 02:42:38,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:38,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:38,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:38,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906245554] [2024-11-09 02:42:38,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906245554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:38,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441370377] [2024-11-09 02:42:38,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:42:38,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:38,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:38,538 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) [2024-11-09 02:42:38,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 02:42:38,590 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:42:38,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:38,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:38,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:38,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:38,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441370377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:38,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:38,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 02:42:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000631854] [2024-11-09 02:42:38,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:38,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:42:38,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:38,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:42:38,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:42:38,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:38,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 172 transitions, 2160 flow. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:38,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:38,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:38,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:38,856 INFO L124 PetriNetUnfolderBase]: 390/650 cut-off events. [2024-11-09 02:42:38,857 INFO L125 PetriNetUnfolderBase]: For 10563/10563 co-relation queries the response was YES. [2024-11-09 02:42:38,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4839 conditions, 650 events. 390/650 cut-off events. For 10563/10563 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2689 event pairs, 43 based on Foata normal form. 8/658 useless extension candidates. Maximal degree in co-relation 4777. Up to 250 conditions per place. [2024-11-09 02:42:38,863 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 103 selfloop transitions, 115 changer transitions 5/224 dead transitions. [2024-11-09 02:42:38,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 224 transitions, 3303 flow [2024-11-09 02:42:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:42:38,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:42:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 118 transitions. [2024-11-09 02:42:38,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-11-09 02:42:38,864 INFO L175 Difference]: Start difference. First operand has 163 places, 172 transitions, 2160 flow. Second operand 16 states and 118 transitions. [2024-11-09 02:42:38,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 224 transitions, 3303 flow [2024-11-09 02:42:38,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 224 transitions, 3078 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-11-09 02:42:38,890 INFO L231 Difference]: Finished difference. Result has 171 places, 197 transitions, 2773 flow [2024-11-09 02:42:38,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2773, PETRI_PLACES=171, PETRI_TRANSITIONS=197} [2024-11-09 02:42:38,891 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 151 predicate places. [2024-11-09 02:42:38,891 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 197 transitions, 2773 flow [2024-11-09 02:42:38,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:38,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:38,891 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:38,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:39,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 02:42:39,091 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:39,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:39,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1146185132, now seen corresponding path program 16 times [2024-11-09 02:42:39,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:39,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754839493] [2024-11-09 02:42:39,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:39,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:39,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:39,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754839493] [2024-11-09 02:42:39,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754839493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:39,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993975709] [2024-11-09 02:42:39,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:42:39,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:39,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:39,158 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) [2024-11-09 02:42:39,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 02:42:39,213 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:42:39,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:39,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:39,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:39,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:39,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993975709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:39,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:39,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 02:42:39,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980503066] [2024-11-09 02:42:39,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:39,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:39,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:39,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:39,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:39,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:39,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 197 transitions, 2773 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:39,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:39,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:39,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:39,596 INFO L124 PetriNetUnfolderBase]: 488/802 cut-off events. [2024-11-09 02:42:39,596 INFO L125 PetriNetUnfolderBase]: For 16442/16442 co-relation queries the response was YES. [2024-11-09 02:42:39,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6327 conditions, 802 events. 488/802 cut-off events. For 16442/16442 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3396 event pairs, 35 based on Foata normal form. 14/816 useless extension candidates. Maximal degree in co-relation 6261. Up to 254 conditions per place. [2024-11-09 02:42:39,604 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 102 selfloop transitions, 171 changer transitions 0/274 dead transitions. [2024-11-09 02:42:39,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 274 transitions, 4341 flow [2024-11-09 02:42:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:42:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:42:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 132 transitions. [2024-11-09 02:42:39,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-11-09 02:42:39,605 INFO L175 Difference]: Start difference. First operand has 171 places, 197 transitions, 2773 flow. Second operand 17 states and 132 transitions. [2024-11-09 02:42:39,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 274 transitions, 4341 flow [2024-11-09 02:42:39,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 274 transitions, 3940 flow, removed 153 selfloop flow, removed 9 redundant places. [2024-11-09 02:42:39,646 INFO L231 Difference]: Finished difference. Result has 180 places, 248 transitions, 3786 flow [2024-11-09 02:42:39,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3786, PETRI_PLACES=180, PETRI_TRANSITIONS=248} [2024-11-09 02:42:39,647 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 160 predicate places. [2024-11-09 02:42:39,647 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 248 transitions, 3786 flow [2024-11-09 02:42:39,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:39,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:39,647 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:39,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:39,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:39,848 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:39,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:39,848 INFO L85 PathProgramCache]: Analyzing trace with hash -752037260, now seen corresponding path program 17 times [2024-11-09 02:42:39,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:39,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952235784] [2024-11-09 02:42:39,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:39,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:39,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:39,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952235784] [2024-11-09 02:42:39,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952235784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:39,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905911161] [2024-11-09 02:42:39,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:42:39,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:39,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:39,903 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) [2024-11-09 02:42:39,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 02:42:39,952 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:39,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:39,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:39,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:40,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:40,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905911161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:40,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:40,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 02:42:40,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96010047] [2024-11-09 02:42:40,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:40,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:42:40,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:40,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:42:40,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:42:40,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:40,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 248 transitions, 3786 flow. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:40,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:40,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:40,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:40,387 INFO L124 PetriNetUnfolderBase]: 585/967 cut-off events. [2024-11-09 02:42:40,387 INFO L125 PetriNetUnfolderBase]: For 17653/17653 co-relation queries the response was YES. [2024-11-09 02:42:40,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8016 conditions, 967 events. 585/967 cut-off events. For 17653/17653 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4353 event pairs, 38 based on Foata normal form. 8/975 useless extension candidates. Maximal degree in co-relation 7947. Up to 323 conditions per place. [2024-11-09 02:42:40,396 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 164 selfloop transitions, 169 changer transitions 0/334 dead transitions. [2024-11-09 02:42:40,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 334 transitions, 5504 flow [2024-11-09 02:42:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 02:42:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 02:42:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 168 transitions. [2024-11-09 02:42:40,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4057971014492754 [2024-11-09 02:42:40,397 INFO L175 Difference]: Start difference. First operand has 180 places, 248 transitions, 3786 flow. Second operand 23 states and 168 transitions. [2024-11-09 02:42:40,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 334 transitions, 5504 flow [2024-11-09 02:42:40,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 334 transitions, 5101 flow, removed 185 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:40,454 INFO L231 Difference]: Finished difference. Result has 206 places, 298 transitions, 4725 flow [2024-11-09 02:42:40,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3435, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4725, PETRI_PLACES=206, PETRI_TRANSITIONS=298} [2024-11-09 02:42:40,455 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 186 predicate places. [2024-11-09 02:42:40,455 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 298 transitions, 4725 flow [2024-11-09 02:42:40,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:40,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:40,455 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:40,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:40,655 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,SelfDestructingSolverStorable30 [2024-11-09 02:42:40,656 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:40,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2145919580, now seen corresponding path program 18 times [2024-11-09 02:42:40,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:40,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785130100] [2024-11-09 02:42:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:40,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:40,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:40,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785130100] [2024-11-09 02:42:40,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785130100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:40,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079440084] [2024-11-09 02:42:40,707 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:42:40,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:40,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:40,709 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) [2024-11-09 02:42:40,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 02:42:40,756 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:42:40,756 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:40,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:40,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:40,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:40,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079440084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:40,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:40,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 02:42:40,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849335174] [2024-11-09 02:42:40,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:40,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:42:40,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:40,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:42:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:42:40,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:40,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 298 transitions, 4725 flow. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:40,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:40,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:40,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:41,099 INFO L124 PetriNetUnfolderBase]: 630/1038 cut-off events. [2024-11-09 02:42:41,099 INFO L125 PetriNetUnfolderBase]: For 23720/23720 co-relation queries the response was YES. [2024-11-09 02:42:41,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9089 conditions, 1038 events. 630/1038 cut-off events. For 23720/23720 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4737 event pairs, 146 based on Foata normal form. 24/1062 useless extension candidates. Maximal degree in co-relation 9011. Up to 890 conditions per place. [2024-11-09 02:42:41,108 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 291 selfloop transitions, 59 changer transitions 0/351 dead transitions. [2024-11-09 02:42:41,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 351 transitions, 6383 flow [2024-11-09 02:42:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:42:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:42:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 145 transitions. [2024-11-09 02:42:41,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4239766081871345 [2024-11-09 02:42:41,110 INFO L175 Difference]: Start difference. First operand has 206 places, 298 transitions, 4725 flow. Second operand 19 states and 145 transitions. [2024-11-09 02:42:41,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 351 transitions, 6383 flow [2024-11-09 02:42:41,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 351 transitions, 6141 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-11-09 02:42:41,173 INFO L231 Difference]: Finished difference. Result has 227 places, 323 transitions, 5445 flow [2024-11-09 02:42:41,173 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4501, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5445, PETRI_PLACES=227, PETRI_TRANSITIONS=323} [2024-11-09 02:42:41,174 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 207 predicate places. [2024-11-09 02:42:41,174 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 323 transitions, 5445 flow [2024-11-09 02:42:41,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:41,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:41,174 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:41,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:41,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:41,375 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:41,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:41,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1309165746, now seen corresponding path program 19 times [2024-11-09 02:42:41,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:41,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038008664] [2024-11-09 02:42:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:41,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:41,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038008664] [2024-11-09 02:42:41,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038008664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:41,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947730873] [2024-11-09 02:42:41,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:42:41,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:41,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:41,427 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) [2024-11-09 02:42:41,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 02:42:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:41,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:41,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:41,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:41,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947730873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:41,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:41,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 02:42:41,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170837858] [2024-11-09 02:42:41,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:41,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:41,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:41,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:41,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:41,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 323 transitions, 5445 flow. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:41,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:41,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:41,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:41,723 INFO L124 PetriNetUnfolderBase]: 639/1053 cut-off events. [2024-11-09 02:42:41,723 INFO L125 PetriNetUnfolderBase]: For 26501/26501 co-relation queries the response was YES. [2024-11-09 02:42:41,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9581 conditions, 1053 events. 639/1053 cut-off events. For 26501/26501 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4803 event pairs, 148 based on Foata normal form. 4/1057 useless extension candidates. Maximal degree in co-relation 9490. Up to 918 conditions per place. [2024-11-09 02:42:41,733 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 283 selfloop transitions, 56 changer transitions 2/342 dead transitions. [2024-11-09 02:42:41,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 342 transitions, 6527 flow [2024-11-09 02:42:41,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:42:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:42:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 83 transitions. [2024-11-09 02:42:41,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-11-09 02:42:41,735 INFO L175 Difference]: Start difference. First operand has 227 places, 323 transitions, 5445 flow. Second operand 11 states and 83 transitions. [2024-11-09 02:42:41,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 342 transitions, 6527 flow [2024-11-09 02:42:41,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 342 transitions, 5786 flow, removed 350 selfloop flow, removed 8 redundant places. [2024-11-09 02:42:41,828 INFO L231 Difference]: Finished difference. Result has 230 places, 326 transitions, 4995 flow [2024-11-09 02:42:41,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4802, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4995, PETRI_PLACES=230, PETRI_TRANSITIONS=326} [2024-11-09 02:42:41,828 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 210 predicate places. [2024-11-09 02:42:41,828 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 326 transitions, 4995 flow [2024-11-09 02:42:41,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:41,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:41,829 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:41,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:42,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:42,029 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:42,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:42,030 INFO L85 PathProgramCache]: Analyzing trace with hash 229919246, now seen corresponding path program 20 times [2024-11-09 02:42:42,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:42,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252106900] [2024-11-09 02:42:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:42,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:42,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:42,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252106900] [2024-11-09 02:42:42,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252106900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:42,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353147710] [2024-11-09 02:42:42,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:42:42,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:42,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:42,079 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:42,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 02:42:42,128 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:42,128 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:42,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:42,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:42,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:42,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353147710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:42,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:42,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 02:42:42,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185063064] [2024-11-09 02:42:42,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:42,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:42:42,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:42,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:42:42,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:42:42,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:42,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 326 transitions, 4995 flow. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:42,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:42,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:42,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:42,497 INFO L124 PetriNetUnfolderBase]: 679/1113 cut-off events. [2024-11-09 02:42:42,497 INFO L125 PetriNetUnfolderBase]: For 30683/30683 co-relation queries the response was YES. [2024-11-09 02:42:42,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9819 conditions, 1113 events. 679/1113 cut-off events. For 30683/30683 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5136 event pairs, 148 based on Foata normal form. 8/1121 useless extension candidates. Maximal degree in co-relation 9729. Up to 930 conditions per place. [2024-11-09 02:42:42,509 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 284 selfloop transitions, 79 changer transitions 5/369 dead transitions. [2024-11-09 02:42:42,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 369 transitions, 6632 flow [2024-11-09 02:42:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:42:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:42:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 108 transitions. [2024-11-09 02:42:42,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-09 02:42:42,510 INFO L175 Difference]: Start difference. First operand has 230 places, 326 transitions, 4995 flow. Second operand 15 states and 108 transitions. [2024-11-09 02:42:42,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 369 transitions, 6632 flow [2024-11-09 02:42:42,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 369 transitions, 6515 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-09 02:42:42,607 INFO L231 Difference]: Finished difference. Result has 244 places, 346 transitions, 5734 flow [2024-11-09 02:42:42,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4878, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5734, PETRI_PLACES=244, PETRI_TRANSITIONS=346} [2024-11-09 02:42:42,607 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 224 predicate places. [2024-11-09 02:42:42,607 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 346 transitions, 5734 flow [2024-11-09 02:42:42,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:42,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:42,607 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:42,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:42,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:42,808 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:42,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:42,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1665647226, now seen corresponding path program 21 times [2024-11-09 02:42:42,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:42,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583029582] [2024-11-09 02:42:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:42,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:42,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583029582] [2024-11-09 02:42:42,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583029582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143933569] [2024-11-09 02:42:42,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:42:42,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:42,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:42,864 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:42,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 02:42:42,914 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:42:42,914 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:42,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:42,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:42,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:42,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143933569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:42,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:42,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 02:42:42,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626338399] [2024-11-09 02:42:42,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:42,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:42,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:42,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:42,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:42,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:42,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 346 transitions, 5734 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:42,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:42,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:42,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:43,282 INFO L124 PetriNetUnfolderBase]: 712/1160 cut-off events. [2024-11-09 02:42:43,282 INFO L125 PetriNetUnfolderBase]: For 42219/42219 co-relation queries the response was YES. [2024-11-09 02:42:43,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10893 conditions, 1160 events. 712/1160 cut-off events. For 42219/42219 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5349 event pairs, 147 based on Foata normal form. 12/1172 useless extension candidates. Maximal degree in co-relation 10796. Up to 945 conditions per place. [2024-11-09 02:42:43,293 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 292 selfloop transitions, 95 changer transitions 0/388 dead transitions. [2024-11-09 02:42:43,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 388 transitions, 7318 flow [2024-11-09 02:42:43,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:42:43,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:42:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 120 transitions. [2024-11-09 02:42:43,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-09 02:42:43,293 INFO L175 Difference]: Start difference. First operand has 244 places, 346 transitions, 5734 flow. Second operand 16 states and 120 transitions. [2024-11-09 02:42:43,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 388 transitions, 7318 flow [2024-11-09 02:42:43,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 388 transitions, 6886 flow, removed 195 selfloop flow, removed 7 redundant places. [2024-11-09 02:42:43,444 INFO L231 Difference]: Finished difference. Result has 254 places, 365 transitions, 6139 flow [2024-11-09 02:42:43,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5278, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6139, PETRI_PLACES=254, PETRI_TRANSITIONS=365} [2024-11-09 02:42:43,445 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 234 predicate places. [2024-11-09 02:42:43,445 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 365 transitions, 6139 flow [2024-11-09 02:42:43,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:43,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:43,446 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:43,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-09 02:42:43,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:43,646 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:43,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:43,647 INFO L85 PathProgramCache]: Analyzing trace with hash 684674667, now seen corresponding path program 22 times [2024-11-09 02:42:43,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:43,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808480614] [2024-11-09 02:42:43,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:43,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:43,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808480614] [2024-11-09 02:42:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808480614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516423960] [2024-11-09 02:42:43,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:42:43,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:43,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:43,701 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:43,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 02:42:43,746 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:42:43,746 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:43,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:43,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:43,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:43,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516423960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:43,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:43,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 02:42:43,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937245346] [2024-11-09 02:42:43,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:43,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:42:43,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:43,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:42:43,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:42:43,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:43,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 365 transitions, 6139 flow. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:43,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:43,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:43,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:44,213 INFO L124 PetriNetUnfolderBase]: 787/1277 cut-off events. [2024-11-09 02:42:44,213 INFO L125 PetriNetUnfolderBase]: For 48270/48270 co-relation queries the response was YES. [2024-11-09 02:42:44,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12450 conditions, 1277 events. 787/1277 cut-off events. For 48270/48270 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5999 event pairs, 33 based on Foata normal form. 36/1313 useless extension candidates. Maximal degree in co-relation 12351. Up to 857 conditions per place. [2024-11-09 02:42:44,223 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 314 selfloop transitions, 125 changer transitions 0/440 dead transitions. [2024-11-09 02:42:44,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 440 transitions, 8611 flow [2024-11-09 02:42:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 02:42:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 02:42:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 167 transitions. [2024-11-09 02:42:44,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4033816425120773 [2024-11-09 02:42:44,227 INFO L175 Difference]: Start difference. First operand has 254 places, 365 transitions, 6139 flow. Second operand 23 states and 167 transitions. [2024-11-09 02:42:44,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 440 transitions, 8611 flow [2024-11-09 02:42:44,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 440 transitions, 8088 flow, removed 236 selfloop flow, removed 10 redundant places. [2024-11-09 02:42:44,366 INFO L231 Difference]: Finished difference. Result has 278 places, 413 transitions, 7470 flow [2024-11-09 02:42:44,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5653, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7470, PETRI_PLACES=278, PETRI_TRANSITIONS=413} [2024-11-09 02:42:44,367 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 258 predicate places. [2024-11-09 02:42:44,367 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 413 transitions, 7470 flow [2024-11-09 02:42:44,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:44,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:44,367 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:44,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 02:42:44,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-09 02:42:44,568 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:44,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:44,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1447792906, now seen corresponding path program 23 times [2024-11-09 02:42:44,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:44,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289691551] [2024-11-09 02:42:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:44,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:44,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:44,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289691551] [2024-11-09 02:42:44,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289691551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:44,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46413590] [2024-11-09 02:42:44,609 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:42:44,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:44,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:44,610 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:44,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 02:42:44,654 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:44,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:44,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:44,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:44,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:44,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:44,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46413590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:44,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:44,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 02:42:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710916068] [2024-11-09 02:42:44,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:44,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:42:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:44,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:42:44,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:42:44,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:44,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 413 transitions, 7470 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:44,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:44,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:44,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:45,021 INFO L124 PetriNetUnfolderBase]: 801/1308 cut-off events. [2024-11-09 02:42:45,022 INFO L125 PetriNetUnfolderBase]: For 49947/49947 co-relation queries the response was YES. [2024-11-09 02:42:45,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12886 conditions, 1308 events. 801/1308 cut-off events. For 49947/49947 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6219 event pairs, 118 based on Foata normal form. 2/1310 useless extension candidates. Maximal degree in co-relation 12777. Up to 879 conditions per place. [2024-11-09 02:42:45,037 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 324 selfloop transitions, 105 changer transitions 5/435 dead transitions. [2024-11-09 02:42:45,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 435 transitions, 8806 flow [2024-11-09 02:42:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:42:45,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:42:45,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 59 transitions. [2024-11-09 02:42:45,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-11-09 02:42:45,040 INFO L175 Difference]: Start difference. First operand has 278 places, 413 transitions, 7470 flow. Second operand 7 states and 59 transitions. [2024-11-09 02:42:45,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 435 transitions, 8806 flow [2024-11-09 02:42:45,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 435 transitions, 7612 flow, removed 547 selfloop flow, removed 7 redundant places. [2024-11-09 02:42:45,274 INFO L231 Difference]: Finished difference. Result has 281 places, 416 transitions, 6809 flow [2024-11-09 02:42:45,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6330, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6809, PETRI_PLACES=281, PETRI_TRANSITIONS=416} [2024-11-09 02:42:45,275 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 261 predicate places. [2024-11-09 02:42:45,275 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 416 transitions, 6809 flow [2024-11-09 02:42:45,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:45,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:45,275 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:45,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-09 02:42:45,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-09 02:42:45,476 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:45,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:45,476 INFO L85 PathProgramCache]: Analyzing trace with hash 840186385, now seen corresponding path program 24 times [2024-11-09 02:42:45,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:45,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643504299] [2024-11-09 02:42:45,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:45,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:45,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:45,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643504299] [2024-11-09 02:42:45,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643504299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:45,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008203530] [2024-11-09 02:42:45,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:42:45,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:45,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:45,523 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:45,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 02:42:45,568 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:42:45,569 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:45,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:45,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:45,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:45,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008203530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:45,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:45,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 02:42:45,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870935813] [2024-11-09 02:42:45,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:45,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:42:45,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:45,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:42:45,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:42:45,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:45,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 416 transitions, 6809 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:45,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:45,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:45,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:46,036 INFO L124 PetriNetUnfolderBase]: 850/1383 cut-off events. [2024-11-09 02:42:46,036 INFO L125 PetriNetUnfolderBase]: For 31824/31824 co-relation queries the response was YES. [2024-11-09 02:42:46,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12068 conditions, 1383 events. 850/1383 cut-off events. For 31824/31824 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6615 event pairs, 17 based on Foata normal form. 6/1389 useless extension candidates. Maximal degree in co-relation 11954. Up to 657 conditions per place. [2024-11-09 02:42:46,051 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 291 selfloop transitions, 180 changer transitions 0/472 dead transitions. [2024-11-09 02:42:46,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 472 transitions, 8456 flow [2024-11-09 02:42:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:42:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:42:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 83 transitions. [2024-11-09 02:42:46,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-11-09 02:42:46,052 INFO L175 Difference]: Start difference. First operand has 281 places, 416 transitions, 6809 flow. Second operand 10 states and 83 transitions. [2024-11-09 02:42:46,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 472 transitions, 8456 flow [2024-11-09 02:42:46,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 472 transitions, 8304 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-09 02:42:46,190 INFO L231 Difference]: Finished difference. Result has 287 places, 442 transitions, 7546 flow [2024-11-09 02:42:46,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6657, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7546, PETRI_PLACES=287, PETRI_TRANSITIONS=442} [2024-11-09 02:42:46,191 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 267 predicate places. [2024-11-09 02:42:46,191 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 442 transitions, 7546 flow [2024-11-09 02:42:46,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:46,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:46,191 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:46,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:46,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-09 02:42:46,392 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:46,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:46,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2015923864, now seen corresponding path program 25 times [2024-11-09 02:42:46,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:46,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233601503] [2024-11-09 02:42:46,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:46,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:46,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:46,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233601503] [2024-11-09 02:42:46,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233601503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:46,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594208362] [2024-11-09 02:42:46,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:42:46,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:46,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:46,442 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:46,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 02:42:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:46,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:46,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:46,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:46,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594208362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:46,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:46,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 02:42:46,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086944839] [2024-11-09 02:42:46,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:46,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:42:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:46,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:42:46,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:42:46,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:46,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 442 transitions, 7546 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:46,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:46,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:46,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:46,904 INFO L124 PetriNetUnfolderBase]: 872/1417 cut-off events. [2024-11-09 02:42:46,905 INFO L125 PetriNetUnfolderBase]: For 36510/36510 co-relation queries the response was YES. [2024-11-09 02:42:46,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13049 conditions, 1417 events. 872/1417 cut-off events. For 36510/36510 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6830 event pairs, 124 based on Foata normal form. 6/1423 useless extension candidates. Maximal degree in co-relation 12934. Up to 921 conditions per place. [2024-11-09 02:42:46,920 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 296 selfloop transitions, 174 changer transitions 1/472 dead transitions. [2024-11-09 02:42:46,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 472 transitions, 9231 flow [2024-11-09 02:42:46,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:42:46,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:42:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 95 transitions. [2024-11-09 02:42:46,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4398148148148148 [2024-11-09 02:42:46,921 INFO L175 Difference]: Start difference. First operand has 287 places, 442 transitions, 7546 flow. Second operand 12 states and 95 transitions. [2024-11-09 02:42:46,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 472 transitions, 9231 flow [2024-11-09 02:42:47,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 472 transitions, 9105 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:47,101 INFO L231 Difference]: Finished difference. Result has 297 places, 454 transitions, 8375 flow [2024-11-09 02:42:47,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=7422, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8375, PETRI_PLACES=297, PETRI_TRANSITIONS=454} [2024-11-09 02:42:47,101 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 277 predicate places. [2024-11-09 02:42:47,102 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 454 transitions, 8375 flow [2024-11-09 02:42:47,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:47,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:47,102 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:47,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-09 02:42:47,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-09 02:42:47,302 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:47,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:47,303 INFO L85 PathProgramCache]: Analyzing trace with hash -305310556, now seen corresponding path program 26 times [2024-11-09 02:42:47,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:47,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746118379] [2024-11-09 02:42:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:47,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:47,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746118379] [2024-11-09 02:42:47,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746118379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170483672] [2024-11-09 02:42:47,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:42:47,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:47,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:47,351 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:47,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 02:42:47,398 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:47,398 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:47,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:47,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:47,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:47,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170483672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:47,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:47,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 02:42:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484456967] [2024-11-09 02:42:47,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:47,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:47,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:47,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:47,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:47,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:47,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 454 transitions, 8375 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:47,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:47,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:47,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:47,783 INFO L124 PetriNetUnfolderBase]: 866/1407 cut-off events. [2024-11-09 02:42:47,783 INFO L125 PetriNetUnfolderBase]: For 38882/38882 co-relation queries the response was YES. [2024-11-09 02:42:47,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13355 conditions, 1407 events. 866/1407 cut-off events. For 38882/38882 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6806 event pairs, 140 based on Foata normal form. 2/1409 useless extension candidates. Maximal degree in co-relation 13238. Up to 1005 conditions per place. [2024-11-09 02:42:47,798 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 342 selfloop transitions, 121 changer transitions 4/468 dead transitions. [2024-11-09 02:42:47,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 468 transitions, 9446 flow [2024-11-09 02:42:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:42:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:42:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 82 transitions. [2024-11-09 02:42:47,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-11-09 02:42:47,800 INFO L175 Difference]: Start difference. First operand has 297 places, 454 transitions, 8375 flow. Second operand 11 states and 82 transitions. [2024-11-09 02:42:47,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 468 transitions, 9446 flow [2024-11-09 02:42:48,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 468 transitions, 8704 flow, removed 170 selfloop flow, removed 12 redundant places. [2024-11-09 02:42:48,008 INFO L231 Difference]: Finished difference. Result has 294 places, 451 transitions, 7830 flow [2024-11-09 02:42:48,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7830, PETRI_PLACES=294, PETRI_TRANSITIONS=451} [2024-11-09 02:42:48,008 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 274 predicate places. [2024-11-09 02:42:48,008 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 451 transitions, 7830 flow [2024-11-09 02:42:48,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:48,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:48,009 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:48,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:48,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-09 02:42:48,209 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:48,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:48,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1272419989, now seen corresponding path program 27 times [2024-11-09 02:42:48,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:48,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727771296] [2024-11-09 02:42:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:48,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:48,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:48,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727771296] [2024-11-09 02:42:48,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727771296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:48,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423585805] [2024-11-09 02:42:48,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:42:48,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:48,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:48,270 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:48,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 02:42:48,317 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:42:48,318 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:48,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:48,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:48,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:48,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423585805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:48,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:48,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 02:42:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965179881] [2024-11-09 02:42:48,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:48,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:48,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:48,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:48,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 451 transitions, 7830 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:48,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:48,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:48,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:48,800 INFO L124 PetriNetUnfolderBase]: 904/1469 cut-off events. [2024-11-09 02:42:48,800 INFO L125 PetriNetUnfolderBase]: For 33685/33685 co-relation queries the response was YES. [2024-11-09 02:42:48,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13258 conditions, 1469 events. 904/1469 cut-off events. For 33685/33685 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7183 event pairs, 43 based on Foata normal form. 4/1473 useless extension candidates. Maximal degree in co-relation 13146. Up to 975 conditions per place. [2024-11-09 02:42:48,812 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 358 selfloop transitions, 138 changer transitions 0/497 dead transitions. [2024-11-09 02:42:48,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 497 transitions, 9207 flow [2024-11-09 02:42:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:42:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:42:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 101 transitions. [2024-11-09 02:42:48,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4007936507936508 [2024-11-09 02:42:48,813 INFO L175 Difference]: Start difference. First operand has 294 places, 451 transitions, 7830 flow. Second operand 14 states and 101 transitions. [2024-11-09 02:42:48,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 497 transitions, 9207 flow [2024-11-09 02:42:48,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 497 transitions, 8959 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-09 02:42:48,961 INFO L231 Difference]: Finished difference. Result has 301 places, 475 transitions, 8193 flow [2024-11-09 02:42:48,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=7555, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8193, PETRI_PLACES=301, PETRI_TRANSITIONS=475} [2024-11-09 02:42:48,961 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 281 predicate places. [2024-11-09 02:42:48,961 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 475 transitions, 8193 flow [2024-11-09 02:42:48,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:48,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:48,962 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:48,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-09 02:42:49,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-09 02:42:49,162 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:49,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:49,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1089475675, now seen corresponding path program 28 times [2024-11-09 02:42:49,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:49,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499231445] [2024-11-09 02:42:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:49,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:49,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:49,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499231445] [2024-11-09 02:42:49,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499231445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:49,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006469789] [2024-11-09 02:42:49,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:42:49,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:49,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:49,213 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:49,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-09 02:42:49,256 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:42:49,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:49,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:49,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:49,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:49,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006469789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:49,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:49,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 02:42:49,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128542152] [2024-11-09 02:42:49,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:49,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:42:49,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:42:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:42:49,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:49,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 475 transitions, 8193 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:49,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:49,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:49,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:49,742 INFO L124 PetriNetUnfolderBase]: 945/1528 cut-off events. [2024-11-09 02:42:49,742 INFO L125 PetriNetUnfolderBase]: For 39389/39389 co-relation queries the response was YES. [2024-11-09 02:42:49,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14387 conditions, 1528 events. 945/1528 cut-off events. For 39389/39389 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7496 event pairs, 59 based on Foata normal form. 9/1537 useless extension candidates. Maximal degree in co-relation 14269. Up to 875 conditions per place. [2024-11-09 02:42:49,756 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 350 selfloop transitions, 167 changer transitions 2/520 dead transitions. [2024-11-09 02:42:49,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 520 transitions, 10250 flow [2024-11-09 02:42:49,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:42:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:42:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 103 transitions. [2024-11-09 02:42:49,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44017094017094016 [2024-11-09 02:42:49,757 INFO L175 Difference]: Start difference. First operand has 301 places, 475 transitions, 8193 flow. Second operand 13 states and 103 transitions. [2024-11-09 02:42:49,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 520 transitions, 10250 flow [2024-11-09 02:42:49,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 520 transitions, 10062 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-11-09 02:42:49,942 INFO L231 Difference]: Finished difference. Result has 314 places, 493 transitions, 9172 flow [2024-11-09 02:42:49,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=8006, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9172, PETRI_PLACES=314, PETRI_TRANSITIONS=493} [2024-11-09 02:42:49,943 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 294 predicate places. [2024-11-09 02:42:49,943 INFO L471 AbstractCegarLoop]: Abstraction has has 314 places, 493 transitions, 9172 flow [2024-11-09 02:42:49,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:49,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:49,943 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:49,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-09 02:42:50,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:50,144 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:50,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:50,144 INFO L85 PathProgramCache]: Analyzing trace with hash -717728714, now seen corresponding path program 29 times [2024-11-09 02:42:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:50,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317676944] [2024-11-09 02:42:50,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:50,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:50,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:50,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317676944] [2024-11-09 02:42:50,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317676944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:50,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64147348] [2024-11-09 02:42:50,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:42:50,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:50,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:50,191 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:50,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 02:42:50,238 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 02:42:50,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:50,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:50,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:50,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:50,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64147348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:50,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:50,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 02:42:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499033235] [2024-11-09 02:42:50,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:50,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:42:50,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:42:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:42:50,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:50,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 493 transitions, 9172 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:50,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:50,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:50,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:50,789 INFO L124 PetriNetUnfolderBase]: 944/1521 cut-off events. [2024-11-09 02:42:50,789 INFO L125 PetriNetUnfolderBase]: For 43557/43557 co-relation queries the response was YES. [2024-11-09 02:42:50,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14783 conditions, 1521 events. 944/1521 cut-off events. For 43557/43557 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7339 event pairs, 140 based on Foata normal form. 10/1531 useless extension candidates. Maximal degree in co-relation 14659. Up to 1021 conditions per place. [2024-11-09 02:42:50,805 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 335 selfloop transitions, 185 changer transitions 0/521 dead transitions. [2024-11-09 02:42:50,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 521 transitions, 10533 flow [2024-11-09 02:42:50,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:42:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:42:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 129 transitions. [2024-11-09 02:42:50,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2024-11-09 02:42:50,806 INFO L175 Difference]: Start difference. First operand has 314 places, 493 transitions, 9172 flow. Second operand 17 states and 129 transitions. [2024-11-09 02:42:50,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 521 transitions, 10533 flow [2024-11-09 02:42:50,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 521 transitions, 9905 flow, removed 241 selfloop flow, removed 8 redundant places. [2024-11-09 02:42:51,002 INFO L231 Difference]: Finished difference. Result has 321 places, 495 transitions, 9055 flow [2024-11-09 02:42:51,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=8491, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9055, PETRI_PLACES=321, PETRI_TRANSITIONS=495} [2024-11-09 02:42:51,003 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 301 predicate places. [2024-11-09 02:42:51,003 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 495 transitions, 9055 flow [2024-11-09 02:42:51,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:51,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:51,003 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:51,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:51,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:51,204 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:51,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:51,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1993687287, now seen corresponding path program 30 times [2024-11-09 02:42:51,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:51,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823238922] [2024-11-09 02:42:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:51,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:51,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:51,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823238922] [2024-11-09 02:42:51,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823238922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:51,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240860914] [2024-11-09 02:42:51,256 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:42:51,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:51,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:51,258 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:51,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 02:42:51,310 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:42:51,310 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:51,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:51,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:51,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:42:51,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240860914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:51,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:51,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 02:42:51,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798437263] [2024-11-09 02:42:51,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:51,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:51,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:51,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:51,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:51,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:51,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 495 transitions, 9055 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:51,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:51,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:51,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:51,799 INFO L124 PetriNetUnfolderBase]: 1006/1610 cut-off events. [2024-11-09 02:42:51,800 INFO L125 PetriNetUnfolderBase]: For 45883/45883 co-relation queries the response was YES. [2024-11-09 02:42:51,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15838 conditions, 1610 events. 1006/1610 cut-off events. For 45883/45883 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7908 event pairs, 55 based on Foata normal form. 9/1619 useless extension candidates. Maximal degree in co-relation 15715. Up to 874 conditions per place. [2024-11-09 02:42:51,816 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 347 selfloop transitions, 205 changer transitions 1/554 dead transitions. [2024-11-09 02:42:51,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 554 transitions, 11438 flow [2024-11-09 02:42:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:42:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:42:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 109 transitions. [2024-11-09 02:42:51,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2024-11-09 02:42:51,817 INFO L175 Difference]: Start difference. First operand has 321 places, 495 transitions, 9055 flow. Second operand 14 states and 109 transitions. [2024-11-09 02:42:51,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 554 transitions, 11438 flow [2024-11-09 02:42:52,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 554 transitions, 10885 flow, removed 74 selfloop flow, removed 14 redundant places. [2024-11-09 02:42:52,024 INFO L231 Difference]: Finished difference. Result has 325 places, 525 transitions, 10114 flow [2024-11-09 02:42:52,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=8556, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10114, PETRI_PLACES=325, PETRI_TRANSITIONS=525} [2024-11-09 02:42:52,025 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 305 predicate places. [2024-11-09 02:42:52,025 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 525 transitions, 10114 flow [2024-11-09 02:42:52,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:52,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:52,025 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:52,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-09 02:42:52,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-09 02:42:52,225 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:52,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:52,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1280032079, now seen corresponding path program 31 times [2024-11-09 02:42:52,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:52,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620007468] [2024-11-09 02:42:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:52,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:52,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:52,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620007468] [2024-11-09 02:42:52,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620007468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:52,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986185647] [2024-11-09 02:42:52,275 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:42:52,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:52,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:52,276 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:52,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-09 02:42:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:52,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:52,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:52,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:52,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986185647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:52,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:52,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 02:42:52,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858297008] [2024-11-09 02:42:52,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:52,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:42:52,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:52,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:42:52,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:42:52,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:52,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 525 transitions, 10114 flow. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:52,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:52,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:52,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:52,807 INFO L124 PetriNetUnfolderBase]: 1022/1636 cut-off events. [2024-11-09 02:42:52,807 INFO L125 PetriNetUnfolderBase]: For 51411/51411 co-relation queries the response was YES. [2024-11-09 02:42:52,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16566 conditions, 1636 events. 1022/1636 cut-off events. For 51411/51411 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8063 event pairs, 55 based on Foata normal form. 6/1642 useless extension candidates. Maximal degree in co-relation 16439. Up to 879 conditions per place. [2024-11-09 02:42:52,826 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 355 selfloop transitions, 207 changer transitions 6/569 dead transitions. [2024-11-09 02:42:52,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 569 transitions, 12091 flow [2024-11-09 02:42:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:42:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:42:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 120 transitions. [2024-11-09 02:42:52,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-09 02:42:52,827 INFO L175 Difference]: Start difference. First operand has 325 places, 525 transitions, 10114 flow. Second operand 16 states and 120 transitions. [2024-11-09 02:42:52,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 569 transitions, 12091 flow [2024-11-09 02:42:53,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 569 transitions, 11331 flow, removed 290 selfloop flow, removed 10 redundant places. [2024-11-09 02:42:53,056 INFO L231 Difference]: Finished difference. Result has 333 places, 535 transitions, 10425 flow [2024-11-09 02:42:53,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=9584, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10425, PETRI_PLACES=333, PETRI_TRANSITIONS=535} [2024-11-09 02:42:53,057 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 313 predicate places. [2024-11-09 02:42:53,057 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 535 transitions, 10425 flow [2024-11-09 02:42:53,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:53,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:53,057 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:53,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-09 02:42:53,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:53,258 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:53,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash -909865905, now seen corresponding path program 32 times [2024-11-09 02:42:53,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:53,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417827693] [2024-11-09 02:42:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:53,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:53,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:53,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417827693] [2024-11-09 02:42:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417827693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:53,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985739155] [2024-11-09 02:42:53,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:42:53,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:53,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:53,304 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:53,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-09 02:42:53,359 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:53,360 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:53,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:53,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:53,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:53,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985739155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:53,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:53,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 02:42:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249743598] [2024-11-09 02:42:53,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:53,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:42:53,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:53,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:42:53,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:42:53,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:53,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 535 transitions, 10425 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:53,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:53,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:53,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:53,876 INFO L124 PetriNetUnfolderBase]: 1037/1662 cut-off events. [2024-11-09 02:42:53,876 INFO L125 PetriNetUnfolderBase]: For 49087/49087 co-relation queries the response was YES. [2024-11-09 02:42:53,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16591 conditions, 1662 events. 1037/1662 cut-off events. For 49087/49087 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8139 event pairs, 40 based on Foata normal form. 16/1678 useless extension candidates. Maximal degree in co-relation 16463. Up to 901 conditions per place. [2024-11-09 02:42:53,894 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 321 selfloop transitions, 254 changer transitions 0/576 dead transitions. [2024-11-09 02:42:53,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 576 transitions, 12134 flow [2024-11-09 02:42:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:42:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:42:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 129 transitions. [2024-11-09 02:42:53,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2024-11-09 02:42:53,895 INFO L175 Difference]: Start difference. First operand has 333 places, 535 transitions, 10425 flow. Second operand 17 states and 129 transitions. [2024-11-09 02:42:53,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 576 transitions, 12134 flow [2024-11-09 02:42:54,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 576 transitions, 11582 flow, removed 107 selfloop flow, removed 14 redundant places. [2024-11-09 02:42:54,150 INFO L231 Difference]: Finished difference. Result has 335 places, 553 transitions, 10884 flow [2024-11-09 02:42:54,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=9773, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10884, PETRI_PLACES=335, PETRI_TRANSITIONS=553} [2024-11-09 02:42:54,151 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 315 predicate places. [2024-11-09 02:42:54,151 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 553 transitions, 10884 flow [2024-11-09 02:42:54,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:54,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:54,151 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:54,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:54,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-09 02:42:54,352 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:54,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:54,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1071161881, now seen corresponding path program 33 times [2024-11-09 02:42:54,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:54,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844362000] [2024-11-09 02:42:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:54,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:54,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:54,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844362000] [2024-11-09 02:42:54,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844362000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:54,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480514565] [2024-11-09 02:42:54,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:42:54,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:54,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:54,400 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:54,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-09 02:42:54,445 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:42:54,445 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:54,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:42:54,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:54,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480514565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:54,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:54,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 02:42:54,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018136574] [2024-11-09 02:42:54,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:54,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:42:54,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:42:54,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:42:54,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:54,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 553 transitions, 10884 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:54,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:54,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:54,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:55,022 INFO L124 PetriNetUnfolderBase]: 1034/1663 cut-off events. [2024-11-09 02:42:55,022 INFO L125 PetriNetUnfolderBase]: For 44259/44259 co-relation queries the response was YES. [2024-11-09 02:42:55,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16601 conditions, 1663 events. 1034/1663 cut-off events. For 44259/44259 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8259 event pairs, 39 based on Foata normal form. 10/1673 useless extension candidates. Maximal degree in co-relation 16473. Up to 976 conditions per place. [2024-11-09 02:42:55,041 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 365 selfloop transitions, 212 changer transitions 0/578 dead transitions. [2024-11-09 02:42:55,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 578 transitions, 12243 flow [2024-11-09 02:42:55,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:42:55,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:42:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 120 transitions. [2024-11-09 02:42:55,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-09 02:42:55,042 INFO L175 Difference]: Start difference. First operand has 335 places, 553 transitions, 10884 flow. Second operand 16 states and 120 transitions. [2024-11-09 02:42:55,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 578 transitions, 12243 flow [2024-11-09 02:42:55,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 578 transitions, 11603 flow, removed 130 selfloop flow, removed 16 redundant places. [2024-11-09 02:42:55,286 INFO L231 Difference]: Finished difference. Result has 334 places, 555 transitions, 10721 flow [2024-11-09 02:42:55,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=10113, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10721, PETRI_PLACES=334, PETRI_TRANSITIONS=555} [2024-11-09 02:42:55,286 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 314 predicate places. [2024-11-09 02:42:55,287 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 555 transitions, 10721 flow [2024-11-09 02:42:55,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:55,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:55,287 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:55,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-09 02:42:55,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:55,487 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:55,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:55,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1978793329, now seen corresponding path program 34 times [2024-11-09 02:42:55,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:55,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690435573] [2024-11-09 02:42:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:55,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:55,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:55,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690435573] [2024-11-09 02:42:55,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690435573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:55,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373099113] [2024-11-09 02:42:55,687 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:42:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:55,688 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:55,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-09 02:42:55,737 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:42:55,738 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:55,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:42:55,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:55,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:55,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373099113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:55,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:55,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-09 02:42:55,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239669787] [2024-11-09 02:42:55,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:55,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:42:55,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:42:55,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:42:55,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:55,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 555 transitions, 10721 flow. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:55,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:55,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:55,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:56,634 INFO L124 PetriNetUnfolderBase]: 1199/1976 cut-off events. [2024-11-09 02:42:56,634 INFO L125 PetriNetUnfolderBase]: For 53908/53908 co-relation queries the response was YES. [2024-11-09 02:42:56,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19445 conditions, 1976 events. 1199/1976 cut-off events. For 53908/53908 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10497 event pairs, 25 based on Foata normal form. 2/1978 useless extension candidates. Maximal degree in co-relation 19321. Up to 1547 conditions per place. [2024-11-09 02:42:56,654 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 555 selfloop transitions, 109 changer transitions 12/677 dead transitions. [2024-11-09 02:42:56,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 677 transitions, 14137 flow [2024-11-09 02:42:56,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:42:56,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:42:56,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-11-09 02:42:56,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2024-11-09 02:42:56,655 INFO L175 Difference]: Start difference. First operand has 334 places, 555 transitions, 10721 flow. Second operand 11 states and 106 transitions. [2024-11-09 02:42:56,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 677 transitions, 14137 flow [2024-11-09 02:42:56,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 677 transitions, 13728 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-11-09 02:42:56,920 INFO L231 Difference]: Finished difference. Result has 341 places, 615 transitions, 12003 flow [2024-11-09 02:42:56,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=10348, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12003, PETRI_PLACES=341, PETRI_TRANSITIONS=615} [2024-11-09 02:42:56,921 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 321 predicate places. [2024-11-09 02:42:56,922 INFO L471 AbstractCegarLoop]: Abstraction has has 341 places, 615 transitions, 12003 flow [2024-11-09 02:42:56,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:56,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:56,922 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:56,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-09 02:42:57,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-09 02:42:57,123 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:57,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1386347853, now seen corresponding path program 35 times [2024-11-09 02:42:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:57,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339509755] [2024-11-09 02:42:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:57,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:57,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339509755] [2024-11-09 02:42:57,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339509755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:57,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904333497] [2024-11-09 02:42:57,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:42:57,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:57,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:57,286 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:57,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-09 02:42:57,336 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:42:57,336 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:57,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:42:57,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:57,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:57,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904333497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:57,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:57,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-09 02:42:57,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790796148] [2024-11-09 02:42:57,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:57,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:42:57,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:57,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:42:57,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:42:57,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:57,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 615 transitions, 12003 flow. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 15 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:57,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:57,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:57,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:58,308 INFO L124 PetriNetUnfolderBase]: 1207/1998 cut-off events. [2024-11-09 02:42:58,309 INFO L125 PetriNetUnfolderBase]: For 56472/56472 co-relation queries the response was YES. [2024-11-09 02:42:58,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20029 conditions, 1998 events. 1207/1998 cut-off events. For 56472/56472 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10720 event pairs, 24 based on Foata normal form. 2/2000 useless extension candidates. Maximal degree in co-relation 19896. Up to 1677 conditions per place. [2024-11-09 02:42:58,326 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 554 selfloop transitions, 91 changer transitions 18/664 dead transitions. [2024-11-09 02:42:58,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 664 transitions, 13965 flow [2024-11-09 02:42:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:42:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:42:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2024-11-09 02:42:58,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47685185185185186 [2024-11-09 02:42:58,327 INFO L175 Difference]: Start difference. First operand has 341 places, 615 transitions, 12003 flow. Second operand 12 states and 103 transitions. [2024-11-09 02:42:58,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 664 transitions, 13965 flow [2024-11-09 02:42:58,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 664 transitions, 13563 flow, removed 199 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:58,611 INFO L231 Difference]: Finished difference. Result has 352 places, 620 transitions, 12078 flow [2024-11-09 02:42:58,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=11675, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12078, PETRI_PLACES=352, PETRI_TRANSITIONS=620} [2024-11-09 02:42:58,612 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 332 predicate places. [2024-11-09 02:42:58,614 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 620 transitions, 12078 flow [2024-11-09 02:42:58,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 15 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:58,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:58,615 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:58,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-09 02:42:58,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-09 02:42:58,819 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:42:58,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:58,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1768086217, now seen corresponding path program 36 times [2024-11-09 02:42:58,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:58,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735975262] [2024-11-09 02:42:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:58,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:58,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:58,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735975262] [2024-11-09 02:42:58,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735975262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:42:58,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299714339] [2024-11-09 02:42:58,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:42:58,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:42:58,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:42:58,947 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:42:58,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-09 02:42:58,992 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:42:58,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:42:58,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:42:58,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:42:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:59,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:42:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:42:59,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299714339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:42:59,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:42:59,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-09 02:42:59,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995052755] [2024-11-09 02:42:59,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:42:59,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:42:59,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:59,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:42:59,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:42:59,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:42:59,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 620 transitions, 12078 flow. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:59,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:59,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:42:59,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:59,824 INFO L124 PetriNetUnfolderBase]: 1187/1962 cut-off events. [2024-11-09 02:42:59,824 INFO L125 PetriNetUnfolderBase]: For 50384/50384 co-relation queries the response was YES. [2024-11-09 02:42:59,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19387 conditions, 1962 events. 1187/1962 cut-off events. For 50384/50384 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10450 event pairs, 23 based on Foata normal form. 1/1963 useless extension candidates. Maximal degree in co-relation 19251. Up to 1553 conditions per place. [2024-11-09 02:42:59,847 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 547 selfloop transitions, 109 changer transitions 4/661 dead transitions. [2024-11-09 02:42:59,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 661 transitions, 13881 flow [2024-11-09 02:42:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:42:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:42:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-11-09 02:42:59,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5493827160493827 [2024-11-09 02:42:59,848 INFO L175 Difference]: Start difference. First operand has 352 places, 620 transitions, 12078 flow. Second operand 9 states and 89 transitions. [2024-11-09 02:42:59,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 661 transitions, 13881 flow [2024-11-09 02:43:00,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 661 transitions, 13542 flow, removed 106 selfloop flow, removed 6 redundant places. [2024-11-09 02:43:00,156 INFO L231 Difference]: Finished difference. Result has 354 places, 624 transitions, 12139 flow [2024-11-09 02:43:00,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=11747, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12139, PETRI_PLACES=354, PETRI_TRANSITIONS=624} [2024-11-09 02:43:00,157 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 334 predicate places. [2024-11-09 02:43:00,157 INFO L471 AbstractCegarLoop]: Abstraction has has 354 places, 624 transitions, 12139 flow [2024-11-09 02:43:00,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:00,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:00,157 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:00,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:00,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-09 02:43:00,358 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:00,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:00,358 INFO L85 PathProgramCache]: Analyzing trace with hash -770088891, now seen corresponding path program 37 times [2024-11-09 02:43:00,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:00,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843360355] [2024-11-09 02:43:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:00,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:00,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:00,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843360355] [2024-11-09 02:43:00,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843360355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:00,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253729845] [2024-11-09 02:43:00,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:43:00,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:00,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:00,527 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:00,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-09 02:43:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:00,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:00,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:00,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:00,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:00,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253729845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:00,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:00,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 02:43:00,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955631623] [2024-11-09 02:43:00,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:00,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:43:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:00,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:43:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:43:00,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:00,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 624 transitions, 12139 flow. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:00,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:00,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:00,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:01,467 INFO L124 PetriNetUnfolderBase]: 1185/1954 cut-off events. [2024-11-09 02:43:01,467 INFO L125 PetriNetUnfolderBase]: For 50802/50802 co-relation queries the response was YES. [2024-11-09 02:43:01,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19169 conditions, 1954 events. 1185/1954 cut-off events. For 50802/50802 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10371 event pairs, 22 based on Foata normal form. 1/1955 useless extension candidates. Maximal degree in co-relation 19032. Up to 1608 conditions per place. [2024-11-09 02:43:01,531 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 549 selfloop transitions, 109 changer transitions 4/663 dead transitions. [2024-11-09 02:43:01,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 663 transitions, 13847 flow [2024-11-09 02:43:01,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:43:01,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:43:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-11-09 02:43:01,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2024-11-09 02:43:01,532 INFO L175 Difference]: Start difference. First operand has 354 places, 624 transitions, 12139 flow. Second operand 11 states and 97 transitions. [2024-11-09 02:43:01,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 663 transitions, 13847 flow [2024-11-09 02:43:01,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 663 transitions, 13603 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-11-09 02:43:01,867 INFO L231 Difference]: Finished difference. Result has 359 places, 630 transitions, 12307 flow [2024-11-09 02:43:01,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=11904, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12307, PETRI_PLACES=359, PETRI_TRANSITIONS=630} [2024-11-09 02:43:01,868 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 339 predicate places. [2024-11-09 02:43:01,869 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 630 transitions, 12307 flow [2024-11-09 02:43:01,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:01,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:01,869 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:01,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:02,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-09 02:43:02,069 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:02,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash 907908717, now seen corresponding path program 38 times [2024-11-09 02:43:02,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:02,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537185102] [2024-11-09 02:43:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:02,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:02,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537185102] [2024-11-09 02:43:02,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537185102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942195676] [2024-11-09 02:43:02,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:43:02,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:02,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:02,240 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:02,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-09 02:43:02,295 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:43:02,295 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:02,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:02,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:02,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:02,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942195676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:02,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:02,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-09 02:43:02,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655057509] [2024-11-09 02:43:02,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:02,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:43:02,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:02,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:43:02,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:43:02,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:02,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 630 transitions, 12307 flow. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:02,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:02,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:02,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:03,219 INFO L124 PetriNetUnfolderBase]: 1208/2002 cut-off events. [2024-11-09 02:43:03,219 INFO L125 PetriNetUnfolderBase]: For 53252/53252 co-relation queries the response was YES. [2024-11-09 02:43:03,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19766 conditions, 2002 events. 1208/2002 cut-off events. For 53252/53252 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10721 event pairs, 35 based on Foata normal form. 1/2003 useless extension candidates. Maximal degree in co-relation 19629. Up to 1821 conditions per place. [2024-11-09 02:43:03,247 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 590 selfloop transitions, 70 changer transitions 4/665 dead transitions. [2024-11-09 02:43:03,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 665 transitions, 14075 flow [2024-11-09 02:43:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:43:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:43:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 72 transitions. [2024-11-09 02:43:03,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:43:03,248 INFO L175 Difference]: Start difference. First operand has 359 places, 630 transitions, 12307 flow. Second operand 8 states and 72 transitions. [2024-11-09 02:43:03,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 665 transitions, 14075 flow [2024-11-09 02:43:03,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 665 transitions, 13772 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-11-09 02:43:03,611 INFO L231 Difference]: Finished difference. Result has 357 places, 646 transitions, 12563 flow [2024-11-09 02:43:03,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=12006, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12563, PETRI_PLACES=357, PETRI_TRANSITIONS=646} [2024-11-09 02:43:03,611 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 337 predicate places. [2024-11-09 02:43:03,612 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 646 transitions, 12563 flow [2024-11-09 02:43:03,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:03,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:03,612 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:03,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:03,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:03,815 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:03,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash -809840343, now seen corresponding path program 39 times [2024-11-09 02:43:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:03,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705908641] [2024-11-09 02:43:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:03,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:03,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705908641] [2024-11-09 02:43:03,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705908641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:03,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361243308] [2024-11-09 02:43:03,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:43:03,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:03,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:03,959 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:03,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-09 02:43:04,012 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:43:04,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:04,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:04,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:04,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:04,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361243308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:04,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:04,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-09 02:43:04,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619558987] [2024-11-09 02:43:04,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:04,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:43:04,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:43:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:43:04,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:04,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 646 transitions, 12563 flow. Second operand has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:04,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:04,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:04,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:04,947 INFO L124 PetriNetUnfolderBase]: 1247/2065 cut-off events. [2024-11-09 02:43:04,947 INFO L125 PetriNetUnfolderBase]: For 56717/56717 co-relation queries the response was YES. [2024-11-09 02:43:04,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20316 conditions, 2065 events. 1247/2065 cut-off events. For 56717/56717 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11140 event pairs, 34 based on Foata normal form. 1/2066 useless extension candidates. Maximal degree in co-relation 20179. Up to 1826 conditions per place. [2024-11-09 02:43:04,970 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 597 selfloop transitions, 86 changer transitions 6/690 dead transitions. [2024-11-09 02:43:04,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 690 transitions, 14534 flow [2024-11-09 02:43:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:43:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:43:04,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-11-09 02:43:04,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-09 02:43:04,971 INFO L175 Difference]: Start difference. First operand has 357 places, 646 transitions, 12563 flow. Second operand 8 states and 78 transitions. [2024-11-09 02:43:04,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 690 transitions, 14534 flow [2024-11-09 02:43:05,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 690 transitions, 14265 flow, removed 88 selfloop flow, removed 4 redundant places. [2024-11-09 02:43:05,329 INFO L231 Difference]: Finished difference. Result has 362 places, 662 transitions, 12876 flow [2024-11-09 02:43:05,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=12298, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12876, PETRI_PLACES=362, PETRI_TRANSITIONS=662} [2024-11-09 02:43:05,330 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 342 predicate places. [2024-11-09 02:43:05,330 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 662 transitions, 12876 flow [2024-11-09 02:43:05,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:05,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:05,331 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:05,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-09 02:43:05,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:05,534 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:05,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:05,534 INFO L85 PathProgramCache]: Analyzing trace with hash -887594853, now seen corresponding path program 40 times [2024-11-09 02:43:05,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:05,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796833288] [2024-11-09 02:43:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:05,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:05,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:05,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796833288] [2024-11-09 02:43:05,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796833288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:05,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870524737] [2024-11-09 02:43:05,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:43:05,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:05,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:05,676 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:05,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-09 02:43:05,728 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:43:05,728 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:05,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:05,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:05,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:05,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870524737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:05,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:05,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-09 02:43:05,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331651779] [2024-11-09 02:43:05,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:05,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:43:05,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:05,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:43:05,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:43:05,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:05,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 662 transitions, 12876 flow. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:05,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:05,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:05,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:06,521 INFO L124 PetriNetUnfolderBase]: 1243/2053 cut-off events. [2024-11-09 02:43:06,521 INFO L125 PetriNetUnfolderBase]: For 54148/54148 co-relation queries the response was YES. [2024-11-09 02:43:06,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20132 conditions, 2053 events. 1243/2053 cut-off events. For 54148/54148 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11011 event pairs, 33 based on Foata normal form. 1/2054 useless extension candidates. Maximal degree in co-relation 19993. Up to 1826 conditions per place. [2024-11-09 02:43:06,546 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 593 selfloop transitions, 85 changer transitions 5/684 dead transitions. [2024-11-09 02:43:06,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 684 transitions, 14394 flow [2024-11-09 02:43:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:43:06,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:43:06,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 75 transitions. [2024-11-09 02:43:06,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-11-09 02:43:06,547 INFO L175 Difference]: Start difference. First operand has 362 places, 662 transitions, 12876 flow. Second operand 8 states and 75 transitions. [2024-11-09 02:43:06,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 684 transitions, 14394 flow [2024-11-09 02:43:06,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 684 transitions, 14154 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-11-09 02:43:06,913 INFO L231 Difference]: Finished difference. Result has 365 places, 664 transitions, 12918 flow [2024-11-09 02:43:06,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=12638, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12918, PETRI_PLACES=365, PETRI_TRANSITIONS=664} [2024-11-09 02:43:06,914 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 345 predicate places. [2024-11-09 02:43:06,914 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 664 transitions, 12918 flow [2024-11-09 02:43:06,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:06,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:06,914 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:06,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-09 02:43:07,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-09 02:43:07,115 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:07,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:07,115 INFO L85 PathProgramCache]: Analyzing trace with hash -980023607, now seen corresponding path program 41 times [2024-11-09 02:43:07,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:07,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455791079] [2024-11-09 02:43:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:07,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:07,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455791079] [2024-11-09 02:43:07,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455791079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:07,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053499632] [2024-11-09 02:43:07,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:43:07,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:07,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:07,247 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:07,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-09 02:43:07,292 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:43:07,292 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:07,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:07,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:07,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:07,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053499632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:07,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:07,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 02:43:07,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471415953] [2024-11-09 02:43:07,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:07,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:43:07,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:07,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:43:07,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:43:07,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:07,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 664 transitions, 12918 flow. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:07,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:07,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:07,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:08,254 INFO L124 PetriNetUnfolderBase]: 1393/2350 cut-off events. [2024-11-09 02:43:08,255 INFO L125 PetriNetUnfolderBase]: For 64672/64672 co-relation queries the response was YES. [2024-11-09 02:43:08,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23037 conditions, 2350 events. 1393/2350 cut-off events. For 64672/64672 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13409 event pairs, 40 based on Foata normal form. 2/2352 useless extension candidates. Maximal degree in co-relation 22897. Up to 1975 conditions per place. [2024-11-09 02:43:08,281 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 659 selfloop transitions, 113 changer transitions 22/795 dead transitions. [2024-11-09 02:43:08,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 795 transitions, 16766 flow [2024-11-09 02:43:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:43:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:43:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-11-09 02:43:08,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-09 02:43:08,282 INFO L175 Difference]: Start difference. First operand has 365 places, 664 transitions, 12918 flow. Second operand 12 states and 112 transitions. [2024-11-09 02:43:08,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 795 transitions, 16766 flow [2024-11-09 02:43:08,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 795 transitions, 16586 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-11-09 02:43:08,674 INFO L231 Difference]: Finished difference. Result has 380 places, 728 transitions, 14580 flow [2024-11-09 02:43:08,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=12748, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14580, PETRI_PLACES=380, PETRI_TRANSITIONS=728} [2024-11-09 02:43:08,675 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 360 predicate places. [2024-11-09 02:43:08,675 INFO L471 AbstractCegarLoop]: Abstraction has has 380 places, 728 transitions, 14580 flow [2024-11-09 02:43:08,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:08,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:08,676 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:08,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:08,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:08,876 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:08,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:08,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1597194629, now seen corresponding path program 42 times [2024-11-09 02:43:08,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:08,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936572933] [2024-11-09 02:43:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:08,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:09,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:09,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936572933] [2024-11-09 02:43:09,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936572933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:09,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609033198] [2024-11-09 02:43:09,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:43:09,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:09,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:09,012 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:09,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-09 02:43:09,061 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:43:09,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:09,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:09,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:09,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:09,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609033198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:09,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:09,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-09 02:43:09,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283486530] [2024-11-09 02:43:09,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:09,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:43:09,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:09,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:43:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:43:09,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:09,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 728 transitions, 14580 flow. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:09,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:09,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:09,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:10,191 INFO L124 PetriNetUnfolderBase]: 1399/2363 cut-off events. [2024-11-09 02:43:10,191 INFO L125 PetriNetUnfolderBase]: For 72681/72681 co-relation queries the response was YES. [2024-11-09 02:43:10,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23923 conditions, 2363 events. 1399/2363 cut-off events. For 72681/72681 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13503 event pairs, 42 based on Foata normal form. 1/2364 useless extension candidates. Maximal degree in co-relation 23774. Up to 1968 conditions per place. [2024-11-09 02:43:10,223 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 676 selfloop transitions, 112 changer transitions 4/793 dead transitions. [2024-11-09 02:43:10,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 793 transitions, 17328 flow [2024-11-09 02:43:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:43:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:43:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-11-09 02:43:10,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5611111111111111 [2024-11-09 02:43:10,224 INFO L175 Difference]: Start difference. First operand has 380 places, 728 transitions, 14580 flow. Second operand 10 states and 101 transitions. [2024-11-09 02:43:10,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 793 transitions, 17328 flow [2024-11-09 02:43:10,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 793 transitions, 16786 flow, removed 271 selfloop flow, removed 2 redundant places. [2024-11-09 02:43:10,719 INFO L231 Difference]: Finished difference. Result has 388 places, 741 transitions, 14800 flow [2024-11-09 02:43:10,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=14066, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14800, PETRI_PLACES=388, PETRI_TRANSITIONS=741} [2024-11-09 02:43:10,720 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 368 predicate places. [2024-11-09 02:43:10,720 INFO L471 AbstractCegarLoop]: Abstraction has has 388 places, 741 transitions, 14800 flow [2024-11-09 02:43:10,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:10,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:10,720 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:10,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-09 02:43:10,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-09 02:43:10,921 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:10,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:10,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2012377285, now seen corresponding path program 43 times [2024-11-09 02:43:10,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:10,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85068233] [2024-11-09 02:43:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:10,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:11,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:11,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85068233] [2024-11-09 02:43:11,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85068233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:11,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497237018] [2024-11-09 02:43:11,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:43:11,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:11,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:11,072 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:11,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-09 02:43:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:11,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:11,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:11,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:11,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497237018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:11,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:11,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-09 02:43:11,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62635562] [2024-11-09 02:43:11,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:11,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:43:11,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:11,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:43:11,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:43:11,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:11,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 741 transitions, 14800 flow. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:11,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:11,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:11,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:12,141 INFO L124 PetriNetUnfolderBase]: 1436/2435 cut-off events. [2024-11-09 02:43:12,141 INFO L125 PetriNetUnfolderBase]: For 73660/73660 co-relation queries the response was YES. [2024-11-09 02:43:12,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24338 conditions, 2435 events. 1436/2435 cut-off events. For 73660/73660 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 14063 event pairs, 41 based on Foata normal form. 2/2437 useless extension candidates. Maximal degree in co-relation 24187. Up to 2203 conditions per place. [2024-11-09 02:43:12,173 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 702 selfloop transitions, 75 changer transitions 11/789 dead transitions. [2024-11-09 02:43:12,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 789 transitions, 17019 flow [2024-11-09 02:43:12,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:43:12,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:43:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 89 transitions. [2024-11-09 02:43:12,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2024-11-09 02:43:12,174 INFO L175 Difference]: Start difference. First operand has 388 places, 741 transitions, 14800 flow. Second operand 10 states and 89 transitions. [2024-11-09 02:43:12,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 789 transitions, 17019 flow [2024-11-09 02:43:12,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 789 transitions, 16653 flow, removed 125 selfloop flow, removed 4 redundant places. [2024-11-09 02:43:12,677 INFO L231 Difference]: Finished difference. Result has 398 places, 758 transitions, 15083 flow [2024-11-09 02:43:12,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=14438, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15083, PETRI_PLACES=398, PETRI_TRANSITIONS=758} [2024-11-09 02:43:12,678 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 378 predicate places. [2024-11-09 02:43:12,678 INFO L471 AbstractCegarLoop]: Abstraction has has 398 places, 758 transitions, 15083 flow [2024-11-09 02:43:12,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:12,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:12,678 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:12,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:12,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:12,879 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:12,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:12,879 INFO L85 PathProgramCache]: Analyzing trace with hash 730589701, now seen corresponding path program 44 times [2024-11-09 02:43:12,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:12,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120976830] [2024-11-09 02:43:12,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:12,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:13,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120976830] [2024-11-09 02:43:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120976830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037783639] [2024-11-09 02:43:13,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:43:13,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:13,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:13,022 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:13,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-09 02:43:13,067 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:43:13,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:13,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:13,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:13,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:13,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037783639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:13,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:13,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 02:43:13,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214972815] [2024-11-09 02:43:13,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:13,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:43:13,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:13,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:43:13,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:43:13,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:13,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 758 transitions, 15083 flow. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:13,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:13,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:13,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:14,118 INFO L124 PetriNetUnfolderBase]: 1426/2412 cut-off events. [2024-11-09 02:43:14,118 INFO L125 PetriNetUnfolderBase]: For 69468/69468 co-relation queries the response was YES. [2024-11-09 02:43:14,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24149 conditions, 2412 events. 1426/2412 cut-off events. For 69468/69468 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13900 event pairs, 41 based on Foata normal form. 1/2413 useless extension candidates. Maximal degree in co-relation 23992. Up to 2159 conditions per place. [2024-11-09 02:43:14,145 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 701 selfloop transitions, 92 changer transitions 4/798 dead transitions. [2024-11-09 02:43:14,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 798 transitions, 17175 flow [2024-11-09 02:43:14,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:43:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:43:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-11-09 02:43:14,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-09 02:43:14,145 INFO L175 Difference]: Start difference. First operand has 398 places, 758 transitions, 15083 flow. Second operand 11 states and 96 transitions. [2024-11-09 02:43:14,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 798 transitions, 17175 flow [2024-11-09 02:43:14,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 798 transitions, 16817 flow, removed 132 selfloop flow, removed 5 redundant places. [2024-11-09 02:43:14,636 INFO L231 Difference]: Finished difference. Result has 403 places, 767 transitions, 15193 flow [2024-11-09 02:43:14,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=14737, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15193, PETRI_PLACES=403, PETRI_TRANSITIONS=767} [2024-11-09 02:43:14,636 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 383 predicate places. [2024-11-09 02:43:14,636 INFO L471 AbstractCegarLoop]: Abstraction has has 403 places, 767 transitions, 15193 flow [2024-11-09 02:43:14,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:14,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:14,637 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:14,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-09 02:43:14,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:14,837 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:14,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:14,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1014379959, now seen corresponding path program 45 times [2024-11-09 02:43:14,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:14,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277914155] [2024-11-09 02:43:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:14,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:14,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:14,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277914155] [2024-11-09 02:43:14,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277914155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830467003] [2024-11-09 02:43:14,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:43:14,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:14,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:14,959 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:14,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-09 02:43:15,003 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:43:15,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:15,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:15,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:15,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:15,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830467003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:15,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:15,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-09 02:43:15,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242751046] [2024-11-09 02:43:15,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:15,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:43:15,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:15,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:43:15,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:43:15,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:15,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 767 transitions, 15193 flow. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:15,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:15,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:15,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:16,031 INFO L124 PetriNetUnfolderBase]: 1476/2493 cut-off events. [2024-11-09 02:43:16,031 INFO L125 PetriNetUnfolderBase]: For 72052/72052 co-relation queries the response was YES. [2024-11-09 02:43:16,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24742 conditions, 2493 events. 1476/2493 cut-off events. For 72052/72052 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14384 event pairs, 42 based on Foata normal form. 1/2494 useless extension candidates. Maximal degree in co-relation 24584. Up to 2205 conditions per place. [2024-11-09 02:43:16,063 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 720 selfloop transitions, 94 changer transitions 8/823 dead transitions. [2024-11-09 02:43:16,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 823 transitions, 17671 flow [2024-11-09 02:43:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:43:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:43:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-09 02:43:16,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-09 02:43:16,064 INFO L175 Difference]: Start difference. First operand has 403 places, 767 transitions, 15193 flow. Second operand 9 states and 87 transitions. [2024-11-09 02:43:16,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 823 transitions, 17671 flow [2024-11-09 02:43:16,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 823 transitions, 17372 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-11-09 02:43:16,560 INFO L231 Difference]: Finished difference. Result has 406 places, 787 transitions, 15650 flow [2024-11-09 02:43:16,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=14900, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15650, PETRI_PLACES=406, PETRI_TRANSITIONS=787} [2024-11-09 02:43:16,561 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 386 predicate places. [2024-11-09 02:43:16,561 INFO L471 AbstractCegarLoop]: Abstraction has has 406 places, 787 transitions, 15650 flow [2024-11-09 02:43:16,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:16,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:16,562 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:16,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-09 02:43:16,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-09 02:43:16,762 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:16,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1519440119, now seen corresponding path program 46 times [2024-11-09 02:43:16,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:16,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123335159] [2024-11-09 02:43:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:16,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:16,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:16,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123335159] [2024-11-09 02:43:16,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123335159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:16,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827372800] [2024-11-09 02:43:16,903 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:43:16,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:16,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:16,905 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:16,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-09 02:43:16,955 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:43:16,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:16,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:16,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:17,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:17,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827372800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:17,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:17,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 02:43:17,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082388528] [2024-11-09 02:43:17,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:17,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:43:17,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:17,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:43:17,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:43:17,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:17,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 787 transitions, 15650 flow. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:17,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:17,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:17,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:18,060 INFO L124 PetriNetUnfolderBase]: 1466/2471 cut-off events. [2024-11-09 02:43:18,060 INFO L125 PetriNetUnfolderBase]: For 71785/71785 co-relation queries the response was YES. [2024-11-09 02:43:18,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24476 conditions, 2471 events. 1466/2471 cut-off events. For 71785/71785 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14210 event pairs, 42 based on Foata normal form. 1/2472 useless extension candidates. Maximal degree in co-relation 24316. Up to 2105 conditions per place. [2024-11-09 02:43:18,094 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 705 selfloop transitions, 110 changer transitions 4/820 dead transitions. [2024-11-09 02:43:18,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 820 transitions, 17693 flow [2024-11-09 02:43:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:43:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:43:18,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-11-09 02:43:18,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-09 02:43:18,095 INFO L175 Difference]: Start difference. First operand has 406 places, 787 transitions, 15650 flow. Second operand 10 states and 93 transitions. [2024-11-09 02:43:18,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 820 transitions, 17693 flow [2024-11-09 02:43:18,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 820 transitions, 17395 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-11-09 02:43:18,576 INFO L231 Difference]: Finished difference. Result has 410 places, 789 transitions, 15725 flow [2024-11-09 02:43:18,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=15358, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15725, PETRI_PLACES=410, PETRI_TRANSITIONS=789} [2024-11-09 02:43:18,636 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 390 predicate places. [2024-11-09 02:43:18,636 INFO L471 AbstractCegarLoop]: Abstraction has has 410 places, 789 transitions, 15725 flow [2024-11-09 02:43:18,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:18,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:18,636 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:18,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:18,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-09 02:43:18,837 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:18,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:18,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1092134469, now seen corresponding path program 47 times [2024-11-09 02:43:18,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:18,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035835415] [2024-11-09 02:43:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:18,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:18,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:18,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035835415] [2024-11-09 02:43:18,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035835415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:18,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103189446] [2024-11-09 02:43:18,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:43:18,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:18,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:18,960 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:18,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-09 02:43:19,005 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 02:43:19,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:19,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:43:19,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:19,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:19,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103189446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:19,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:19,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-09 02:43:19,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282433978] [2024-11-09 02:43:19,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:19,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:43:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:43:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:43:19,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:19,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 789 transitions, 15725 flow. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:19,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:19,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:19,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:20,080 INFO L124 PetriNetUnfolderBase]: 1464/2463 cut-off events. [2024-11-09 02:43:20,080 INFO L125 PetriNetUnfolderBase]: For 70287/70287 co-relation queries the response was YES. [2024-11-09 02:43:20,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24384 conditions, 2463 events. 1464/2463 cut-off events. For 70287/70287 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 14110 event pairs, 41 based on Foata normal form. 1/2464 useless extension candidates. Maximal degree in co-relation 24223. Up to 2198 conditions per place. [2024-11-09 02:43:20,116 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 717 selfloop transitions, 92 changer transitions 6/816 dead transitions. [2024-11-09 02:43:20,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 816 transitions, 17578 flow [2024-11-09 02:43:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:43:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:43:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-11-09 02:43:20,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-11-09 02:43:20,117 INFO L175 Difference]: Start difference. First operand has 410 places, 789 transitions, 15725 flow. Second operand 8 states and 79 transitions. [2024-11-09 02:43:20,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 816 transitions, 17578 flow [2024-11-09 02:43:20,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 816 transitions, 17283 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-11-09 02:43:20,673 INFO L231 Difference]: Finished difference. Result has 411 places, 791 transitions, 15720 flow [2024-11-09 02:43:20,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=15434, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15720, PETRI_PLACES=411, PETRI_TRANSITIONS=791} [2024-11-09 02:43:20,674 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 391 predicate places. [2024-11-09 02:43:20,674 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 791 transitions, 15720 flow [2024-11-09 02:43:20,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:20,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:20,674 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:20,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-09 02:43:20,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-11-09 02:43:20,875 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:20,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:20,875 INFO L85 PathProgramCache]: Analyzing trace with hash -26371860, now seen corresponding path program 48 times [2024-11-09 02:43:20,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:20,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502604704] [2024-11-09 02:43:20,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:20,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:20,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502604704] [2024-11-09 02:43:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502604704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030830702] [2024-11-09 02:43:20,955 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:43:20,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:20,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:20,959 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:20,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-09 02:43:21,011 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:43:21,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:21,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:21,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:21,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:21,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030830702] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:21,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:21,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 02:43:21,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941581575] [2024-11-09 02:43:21,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:21,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:43:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:43:21,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:43:21,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:21,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 791 transitions, 15720 flow. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:21,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:21,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:21,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:22,055 INFO L124 PetriNetUnfolderBase]: 1779/3026 cut-off events. [2024-11-09 02:43:22,055 INFO L125 PetriNetUnfolderBase]: For 87162/87162 co-relation queries the response was YES. [2024-11-09 02:43:22,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29514 conditions, 3026 events. 1779/3026 cut-off events. For 87162/87162 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 18094 event pairs, 311 based on Foata normal form. 3/3029 useless extension candidates. Maximal degree in co-relation 29352. Up to 1799 conditions per place. [2024-11-09 02:43:22,090 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 745 selfloop transitions, 244 changer transitions 12/1002 dead transitions. [2024-11-09 02:43:22,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 1002 transitions, 21644 flow [2024-11-09 02:43:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:43:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:43:22,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-11-09 02:43:22,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:43:22,091 INFO L175 Difference]: Start difference. First operand has 411 places, 791 transitions, 15720 flow. Second operand 9 states and 81 transitions. [2024-11-09 02:43:22,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 1002 transitions, 21644 flow [2024-11-09 02:43:22,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 1002 transitions, 21401 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-11-09 02:43:22,693 INFO L231 Difference]: Finished difference. Result has 418 places, 877 transitions, 18114 flow [2024-11-09 02:43:22,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=15540, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18114, PETRI_PLACES=418, PETRI_TRANSITIONS=877} [2024-11-09 02:43:22,693 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 398 predicate places. [2024-11-09 02:43:22,693 INFO L471 AbstractCegarLoop]: Abstraction has has 418 places, 877 transitions, 18114 flow [2024-11-09 02:43:22,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:22,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:22,693 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:22,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:22,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:22,894 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:22,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash 604922573, now seen corresponding path program 49 times [2024-11-09 02:43:22,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:22,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728916607] [2024-11-09 02:43:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:22,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:22,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:22,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728916607] [2024-11-09 02:43:22,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728916607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:22,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375122650] [2024-11-09 02:43:22,957 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:43:22,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:22,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:22,958 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:22,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-09 02:43:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:23,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:23,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:23,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:23,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375122650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:23,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:23,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 02:43:23,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187999071] [2024-11-09 02:43:23,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:23,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:43:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:23,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:43:23,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:43:23,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:23,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 877 transitions, 18114 flow. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:23,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:23,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:23,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:24,194 INFO L124 PetriNetUnfolderBase]: 1925/3264 cut-off events. [2024-11-09 02:43:24,194 INFO L125 PetriNetUnfolderBase]: For 103707/103707 co-relation queries the response was YES. [2024-11-09 02:43:24,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32804 conditions, 3264 events. 1925/3264 cut-off events. For 103707/103707 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 19758 event pairs, 89 based on Foata normal form. 13/3277 useless extension candidates. Maximal degree in co-relation 32638. Up to 1057 conditions per place. [2024-11-09 02:43:24,233 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 658 selfloop transitions, 426 changer transitions 0/1085 dead transitions. [2024-11-09 02:43:24,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 1085 transitions, 24064 flow [2024-11-09 02:43:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:43:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:43:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-11-09 02:43:24,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2024-11-09 02:43:24,234 INFO L175 Difference]: Start difference. First operand has 418 places, 877 transitions, 18114 flow. Second operand 13 states and 113 transitions. [2024-11-09 02:43:24,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 1085 transitions, 24064 flow [2024-11-09 02:43:24,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 1085 transitions, 23697 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-11-09 02:43:24,901 INFO L231 Difference]: Finished difference. Result has 427 places, 944 transitions, 20445 flow [2024-11-09 02:43:24,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=17749, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20445, PETRI_PLACES=427, PETRI_TRANSITIONS=944} [2024-11-09 02:43:24,902 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 407 predicate places. [2024-11-09 02:43:24,902 INFO L471 AbstractCegarLoop]: Abstraction has has 427 places, 944 transitions, 20445 flow [2024-11-09 02:43:24,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:24,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:24,902 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:24,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:25,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-11-09 02:43:25,103 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:25,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:25,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2019059639, now seen corresponding path program 50 times [2024-11-09 02:43:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:25,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810375639] [2024-11-09 02:43:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:25,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:25,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:25,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810375639] [2024-11-09 02:43:25,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810375639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:25,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384500742] [2024-11-09 02:43:25,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:43:25,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:25,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:25,167 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:25,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-09 02:43:25,214 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:43:25,214 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:25,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:25,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:25,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:25,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384500742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:25,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:25,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 02:43:25,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998960246] [2024-11-09 02:43:25,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:25,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:43:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:43:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:43:25,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:25,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 944 transitions, 20445 flow. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:25,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:25,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:25,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:26,532 INFO L124 PetriNetUnfolderBase]: 2078/3479 cut-off events. [2024-11-09 02:43:26,532 INFO L125 PetriNetUnfolderBase]: For 131134/131134 co-relation queries the response was YES. [2024-11-09 02:43:26,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37404 conditions, 3479 events. 2078/3479 cut-off events. For 131134/131134 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 21126 event pairs, 213 based on Foata normal form. 10/3489 useless extension candidates. Maximal degree in co-relation 37235. Up to 1284 conditions per place. [2024-11-09 02:43:26,578 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 592 selfloop transitions, 471 changer transitions 3/1067 dead transitions. [2024-11-09 02:43:26,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 1067 transitions, 25807 flow [2024-11-09 02:43:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:43:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:43:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 148 transitions. [2024-11-09 02:43:26,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2024-11-09 02:43:26,579 INFO L175 Difference]: Start difference. First operand has 427 places, 944 transitions, 20445 flow. Second operand 19 states and 148 transitions. [2024-11-09 02:43:26,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 1067 transitions, 25807 flow [2024-11-09 02:43:27,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 1067 transitions, 25066 flow, removed 174 selfloop flow, removed 4 redundant places. [2024-11-09 02:43:27,353 INFO L231 Difference]: Finished difference. Result has 447 places, 1025 transitions, 23699 flow [2024-11-09 02:43:27,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=19877, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=23699, PETRI_PLACES=447, PETRI_TRANSITIONS=1025} [2024-11-09 02:43:27,354 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 427 predicate places. [2024-11-09 02:43:27,354 INFO L471 AbstractCegarLoop]: Abstraction has has 447 places, 1025 transitions, 23699 flow [2024-11-09 02:43:27,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:27,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:27,354 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:27,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-11-09 02:43:27,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:27,555 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:27,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:27,555 INFO L85 PathProgramCache]: Analyzing trace with hash 684133252, now seen corresponding path program 51 times [2024-11-09 02:43:27,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:27,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455967166] [2024-11-09 02:43:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:27,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:27,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:27,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455967166] [2024-11-09 02:43:27,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455967166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:27,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770730422] [2024-11-09 02:43:27,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:43:27,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:27,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:27,618 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:27,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-09 02:43:27,675 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:43:27,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:27,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:27,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:27,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:27,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770730422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:27,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:27,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-09 02:43:27,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887148968] [2024-11-09 02:43:27,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:27,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:43:27,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:27,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:43:27,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:43:27,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:27,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1025 transitions, 23699 flow. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:27,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:27,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:27,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:29,160 INFO L124 PetriNetUnfolderBase]: 2095/3516 cut-off events. [2024-11-09 02:43:29,160 INFO L125 PetriNetUnfolderBase]: For 149664/149664 co-relation queries the response was YES. [2024-11-09 02:43:29,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38992 conditions, 3516 events. 2095/3516 cut-off events. For 149664/149664 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 21333 event pairs, 403 based on Foata normal form. 12/3528 useless extension candidates. Maximal degree in co-relation 38817. Up to 2468 conditions per place. [2024-11-09 02:43:29,206 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 835 selfloop transitions, 299 changer transitions 11/1146 dead transitions. [2024-11-09 02:43:29,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1146 transitions, 28425 flow [2024-11-09 02:43:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:43:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:43:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 119 transitions. [2024-11-09 02:43:29,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-11-09 02:43:29,207 INFO L175 Difference]: Start difference. First operand has 447 places, 1025 transitions, 23699 flow. Second operand 15 states and 119 transitions. [2024-11-09 02:43:29,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1146 transitions, 28425 flow [2024-11-09 02:43:30,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1146 transitions, 26341 flow, removed 653 selfloop flow, removed 10 redundant places. [2024-11-09 02:43:30,234 INFO L231 Difference]: Finished difference. Result has 455 places, 1049 transitions, 23107 flow [2024-11-09 02:43:30,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=21650, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1025, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=732, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=23107, PETRI_PLACES=455, PETRI_TRANSITIONS=1049} [2024-11-09 02:43:30,235 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 435 predicate places. [2024-11-09 02:43:30,235 INFO L471 AbstractCegarLoop]: Abstraction has has 455 places, 1049 transitions, 23107 flow [2024-11-09 02:43:30,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:30,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:30,235 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:30,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-09 02:43:30,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:30,436 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:30,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:30,436 INFO L85 PathProgramCache]: Analyzing trace with hash -688044373, now seen corresponding path program 52 times [2024-11-09 02:43:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:30,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096035419] [2024-11-09 02:43:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:30,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:30,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096035419] [2024-11-09 02:43:30,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096035419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:30,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275417507] [2024-11-09 02:43:30,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:43:30,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:30,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:30,497 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:30,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-09 02:43:30,545 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:43:30,545 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:30,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:30,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:30,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:30,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:30,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275417507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:30,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:30,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 02:43:30,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968855986] [2024-11-09 02:43:30,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:30,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:43:30,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:30,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:43:30,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:43:30,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:30,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 1049 transitions, 23107 flow. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:30,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:30,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:30,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:32,079 INFO L124 PetriNetUnfolderBase]: 2157/3632 cut-off events. [2024-11-09 02:43:32,080 INFO L125 PetriNetUnfolderBase]: For 140165/140165 co-relation queries the response was YES. [2024-11-09 02:43:32,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38718 conditions, 3632 events. 2157/3632 cut-off events. For 140165/140165 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 22237 event pairs, 170 based on Foata normal form. 25/3657 useless extension candidates. Maximal degree in co-relation 38540. Up to 1523 conditions per place. [2024-11-09 02:43:32,129 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 666 selfloop transitions, 465 changer transitions 0/1132 dead transitions. [2024-11-09 02:43:32,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1132 transitions, 26513 flow [2024-11-09 02:43:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 02:43:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 02:43:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 162 transitions. [2024-11-09 02:43:32,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-09 02:43:32,130 INFO L175 Difference]: Start difference. First operand has 455 places, 1049 transitions, 23107 flow. Second operand 21 states and 162 transitions. [2024-11-09 02:43:32,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1132 transitions, 26513 flow [2024-11-09 02:43:33,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1132 transitions, 25512 flow, removed 185 selfloop flow, removed 8 redundant places. [2024-11-09 02:43:33,088 INFO L231 Difference]: Finished difference. Result has 471 places, 1087 transitions, 24009 flow [2024-11-09 02:43:33,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=21980, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1044, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=24009, PETRI_PLACES=471, PETRI_TRANSITIONS=1087} [2024-11-09 02:43:33,090 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 451 predicate places. [2024-11-09 02:43:33,090 INFO L471 AbstractCegarLoop]: Abstraction has has 471 places, 1087 transitions, 24009 flow [2024-11-09 02:43:33,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:33,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:33,090 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:33,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-09 02:43:33,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:33,291 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:33,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:33,291 INFO L85 PathProgramCache]: Analyzing trace with hash -369094609, now seen corresponding path program 53 times [2024-11-09 02:43:33,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:33,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25043782] [2024-11-09 02:43:33,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:33,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:33,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:33,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25043782] [2024-11-09 02:43:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25043782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:33,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774289797] [2024-11-09 02:43:33,355 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:43:33,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:33,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:33,356 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:33,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-09 02:43:33,410 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 02:43:33,411 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:33,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:33,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:33,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:33,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774289797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:33,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:33,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 02:43:33,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008617260] [2024-11-09 02:43:33,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:33,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:43:33,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:43:33,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:43:33,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:33,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1087 transitions, 24009 flow. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:33,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:33,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:33,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:34,937 INFO L124 PetriNetUnfolderBase]: 2169/3671 cut-off events. [2024-11-09 02:43:34,937 INFO L125 PetriNetUnfolderBase]: For 140071/140071 co-relation queries the response was YES. [2024-11-09 02:43:34,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39369 conditions, 3671 events. 2169/3671 cut-off events. For 140071/140071 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 22782 event pairs, 165 based on Foata normal form. 18/3689 useless extension candidates. Maximal degree in co-relation 39186. Up to 1267 conditions per place. [2024-11-09 02:43:34,991 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 580 selfloop transitions, 557 changer transitions 0/1138 dead transitions. [2024-11-09 02:43:34,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1138 transitions, 26849 flow [2024-11-09 02:43:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 02:43:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 02:43:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 184 transitions. [2024-11-09 02:43:34,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-11-09 02:43:34,992 INFO L175 Difference]: Start difference. First operand has 471 places, 1087 transitions, 24009 flow. Second operand 24 states and 184 transitions. [2024-11-09 02:43:34,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 1138 transitions, 26849 flow [2024-11-09 02:43:35,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1138 transitions, 26317 flow, removed 152 selfloop flow, removed 9 redundant places. [2024-11-09 02:43:35,988 INFO L231 Difference]: Finished difference. Result has 486 places, 1093 transitions, 24919 flow [2024-11-09 02:43:35,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=23359, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=546, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=24919, PETRI_PLACES=486, PETRI_TRANSITIONS=1093} [2024-11-09 02:43:35,989 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 466 predicate places. [2024-11-09 02:43:35,989 INFO L471 AbstractCegarLoop]: Abstraction has has 486 places, 1093 transitions, 24919 flow [2024-11-09 02:43:35,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:35,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:35,989 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:36,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-09 02:43:36,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:36,190 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:36,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:36,190 INFO L85 PathProgramCache]: Analyzing trace with hash 373862872, now seen corresponding path program 54 times [2024-11-09 02:43:36,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:36,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424536107] [2024-11-09 02:43:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:36,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:36,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424536107] [2024-11-09 02:43:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424536107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897265485] [2024-11-09 02:43:36,250 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:43:36,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:36,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:36,252 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:36,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-09 02:43:36,304 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:43:36,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:36,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:36,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:36,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:36,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897265485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:36,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:36,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 02:43:36,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730583535] [2024-11-09 02:43:36,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:36,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:43:36,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:36,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:43:36,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:43:36,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:36,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1093 transitions, 24919 flow. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:36,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:36,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:36,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:37,814 INFO L124 PetriNetUnfolderBase]: 2342/3908 cut-off events. [2024-11-09 02:43:37,814 INFO L125 PetriNetUnfolderBase]: For 157404/157404 co-relation queries the response was YES. [2024-11-09 02:43:37,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43660 conditions, 3908 events. 2342/3908 cut-off events. For 157404/157404 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 24108 event pairs, 415 based on Foata normal form. 21/3929 useless extension candidates. Maximal degree in co-relation 43476. Up to 2595 conditions per place. [2024-11-09 02:43:37,869 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 841 selfloop transitions, 425 changer transitions 15/1282 dead transitions. [2024-11-09 02:43:37,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1282 transitions, 31676 flow [2024-11-09 02:43:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:43:37,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:43:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 135 transitions. [2024-11-09 02:43:37,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-11-09 02:43:37,870 INFO L175 Difference]: Start difference. First operand has 486 places, 1093 transitions, 24919 flow. Second operand 17 states and 135 transitions. [2024-11-09 02:43:37,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1282 transitions, 31676 flow [2024-11-09 02:43:39,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1282 transitions, 30632 flow, removed 75 selfloop flow, removed 19 redundant places. [2024-11-09 02:43:39,038 INFO L231 Difference]: Finished difference. Result has 486 places, 1165 transitions, 27153 flow [2024-11-09 02:43:39,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=23886, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=27153, PETRI_PLACES=486, PETRI_TRANSITIONS=1165} [2024-11-09 02:43:39,039 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 466 predicate places. [2024-11-09 02:43:39,040 INFO L471 AbstractCegarLoop]: Abstraction has has 486 places, 1165 transitions, 27153 flow [2024-11-09 02:43:39,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:39,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:39,040 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:39,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-09 02:43:39,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-09 02:43:39,240 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:39,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:39,241 INFO L85 PathProgramCache]: Analyzing trace with hash 924542290, now seen corresponding path program 55 times [2024-11-09 02:43:39,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:39,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625126017] [2024-11-09 02:43:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:39,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:39,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:39,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625126017] [2024-11-09 02:43:39,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625126017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:39,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839013278] [2024-11-09 02:43:39,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:43:39,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:39,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:39,299 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:39,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-09 02:43:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:39,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:39,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:39,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:39,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839013278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:39,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:39,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 02:43:39,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346035305] [2024-11-09 02:43:39,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:39,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:43:39,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:39,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:43:39,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:43:39,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:39,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1165 transitions, 27153 flow. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:39,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:39,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:39,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:41,227 INFO L124 PetriNetUnfolderBase]: 2451/4032 cut-off events. [2024-11-09 02:43:41,228 INFO L125 PetriNetUnfolderBase]: For 178271/178271 co-relation queries the response was YES. [2024-11-09 02:43:41,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46629 conditions, 4032 events. 2451/4032 cut-off events. For 178271/178271 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 24418 event pairs, 428 based on Foata normal form. 26/4058 useless extension candidates. Maximal degree in co-relation 46442. Up to 2724 conditions per place. [2024-11-09 02:43:41,282 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 798 selfloop transitions, 545 changer transitions 1/1345 dead transitions. [2024-11-09 02:43:41,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 1345 transitions, 33968 flow [2024-11-09 02:43:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 02:43:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-09 02:43:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 202 transitions. [2024-11-09 02:43:41,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4007936507936508 [2024-11-09 02:43:41,283 INFO L175 Difference]: Start difference. First operand has 486 places, 1165 transitions, 27153 flow. Second operand 28 states and 202 transitions. [2024-11-09 02:43:41,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 1345 transitions, 33968 flow [2024-11-09 02:43:42,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 1345 transitions, 32835 flow, removed 391 selfloop flow, removed 9 redundant places. [2024-11-09 02:43:42,405 INFO L231 Difference]: Finished difference. Result has 510 places, 1256 transitions, 30364 flow [2024-11-09 02:43:42,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=25795, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=447, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=30364, PETRI_PLACES=510, PETRI_TRANSITIONS=1256} [2024-11-09 02:43:42,406 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 490 predicate places. [2024-11-09 02:43:42,406 INFO L471 AbstractCegarLoop]: Abstraction has has 510 places, 1256 transitions, 30364 flow [2024-11-09 02:43:42,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:42,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:42,406 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:42,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-09 02:43:42,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-09 02:43:42,607 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:42,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2106312999, now seen corresponding path program 56 times [2024-11-09 02:43:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:42,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763074393] [2024-11-09 02:43:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:42,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763074393] [2024-11-09 02:43:42,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763074393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734914825] [2024-11-09 02:43:42,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:43:42,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:42,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:42,678 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:42,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-09 02:43:42,731 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:43:42,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:42,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:42,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:42,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:42,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734914825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:42,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:42,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-09 02:43:42,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766692958] [2024-11-09 02:43:42,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:42,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:43:42,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:42,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:43:42,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:43:42,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:42,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 1256 transitions, 30364 flow. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:42,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:42,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:42,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:44,740 INFO L124 PetriNetUnfolderBase]: 2509/4138 cut-off events. [2024-11-09 02:43:44,741 INFO L125 PetriNetUnfolderBase]: For 169231/169231 co-relation queries the response was YES. [2024-11-09 02:43:44,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48646 conditions, 4138 events. 2509/4138 cut-off events. For 169231/169231 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 25285 event pairs, 192 based on Foata normal form. 8/4146 useless extension candidates. Maximal degree in co-relation 48452. Up to 2032 conditions per place. [2024-11-09 02:43:44,802 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 868 selfloop transitions, 458 changer transitions 0/1327 dead transitions. [2024-11-09 02:43:44,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1327 transitions, 34217 flow [2024-11-09 02:43:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:43:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:43:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 144 transitions. [2024-11-09 02:43:44,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-11-09 02:43:44,803 INFO L175 Difference]: Start difference. First operand has 510 places, 1256 transitions, 30364 flow. Second operand 19 states and 144 transitions. [2024-11-09 02:43:44,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 1327 transitions, 34217 flow [2024-11-09 02:43:46,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 1327 transitions, 32595 flow, removed 603 selfloop flow, removed 13 redundant places. [2024-11-09 02:43:46,106 INFO L231 Difference]: Finished difference. Result has 519 places, 1283 transitions, 30467 flow [2024-11-09 02:43:46,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=28742, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=432, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=806, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=30467, PETRI_PLACES=519, PETRI_TRANSITIONS=1283} [2024-11-09 02:43:46,107 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 499 predicate places. [2024-11-09 02:43:46,107 INFO L471 AbstractCegarLoop]: Abstraction has has 519 places, 1283 transitions, 30467 flow [2024-11-09 02:43:46,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:46,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:46,108 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:46,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-09 02:43:46,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-09 02:43:46,308 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:46,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1852308518, now seen corresponding path program 57 times [2024-11-09 02:43:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:46,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111355933] [2024-11-09 02:43:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:46,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:46,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:46,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111355933] [2024-11-09 02:43:46,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111355933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:46,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018914907] [2024-11-09 02:43:46,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:43:46,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:46,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:46,361 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:46,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-09 02:43:46,408 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:43:46,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:46,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:46,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:46,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:46,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018914907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:46,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:46,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 02:43:46,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490915265] [2024-11-09 02:43:46,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:46,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:43:46,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:46,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:43:46,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:43:46,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:46,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 1283 transitions, 30467 flow. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:46,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:46,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:46,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:48,261 INFO L124 PetriNetUnfolderBase]: 2491/4117 cut-off events. [2024-11-09 02:43:48,261 INFO L125 PetriNetUnfolderBase]: For 167972/167972 co-relation queries the response was YES. [2024-11-09 02:43:48,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47920 conditions, 4117 events. 2491/4117 cut-off events. For 167972/167972 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 25193 event pairs, 438 based on Foata normal form. 27/4144 useless extension candidates. Maximal degree in co-relation 47722. Up to 2765 conditions per place. [2024-11-09 02:43:48,325 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 837 selfloop transitions, 509 changer transitions 11/1358 dead transitions. [2024-11-09 02:43:48,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 1358 transitions, 34619 flow [2024-11-09 02:43:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:43:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:43:48,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 146 transitions. [2024-11-09 02:43:48,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4269005847953216 [2024-11-09 02:43:48,326 INFO L175 Difference]: Start difference. First operand has 519 places, 1283 transitions, 30467 flow. Second operand 19 states and 146 transitions. [2024-11-09 02:43:48,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 1358 transitions, 34619 flow [2024-11-09 02:43:49,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 1358 transitions, 34200 flow, removed 122 selfloop flow, removed 7 redundant places. [2024-11-09 02:43:49,762 INFO L231 Difference]: Finished difference. Result has 530 places, 1268 transitions, 30828 flow [2024-11-09 02:43:49,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=29970, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=507, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=766, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=30828, PETRI_PLACES=530, PETRI_TRANSITIONS=1268} [2024-11-09 02:43:49,765 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 510 predicate places. [2024-11-09 02:43:49,765 INFO L471 AbstractCegarLoop]: Abstraction has has 530 places, 1268 transitions, 30828 flow [2024-11-09 02:43:49,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:49,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:49,766 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:49,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-09 02:43:49,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:49,966 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:49,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1141727027, now seen corresponding path program 58 times [2024-11-09 02:43:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:49,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721759684] [2024-11-09 02:43:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:49,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:50,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:50,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721759684] [2024-11-09 02:43:50,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721759684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:50,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752986891] [2024-11-09 02:43:50,022 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:43:50,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:50,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:50,023 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:50,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-09 02:43:50,070 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:43:50,071 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:50,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:50,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:50,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:50,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752986891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:50,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:50,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-09 02:43:50,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756728828] [2024-11-09 02:43:50,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:50,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:43:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:50,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:43:50,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:43:50,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:50,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 1268 transitions, 30828 flow. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:50,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:50,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:50,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:52,387 INFO L124 PetriNetUnfolderBase]: 2792/4533 cut-off events. [2024-11-09 02:43:52,387 INFO L125 PetriNetUnfolderBase]: For 199584/199584 co-relation queries the response was YES. [2024-11-09 02:43:52,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55090 conditions, 4533 events. 2792/4533 cut-off events. For 199584/199584 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 27560 event pairs, 238 based on Foata normal form. 20/4553 useless extension candidates. Maximal degree in co-relation 54891. Up to 1595 conditions per place. [2024-11-09 02:43:52,465 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 698 selfloop transitions, 761 changer transitions 14/1474 dead transitions. [2024-11-09 02:43:52,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 1474 transitions, 39627 flow [2024-11-09 02:43:52,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 02:43:52,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 02:43:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 156 transitions. [2024-11-09 02:43:52,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-11-09 02:43:52,466 INFO L175 Difference]: Start difference. First operand has 530 places, 1268 transitions, 30828 flow. Second operand 21 states and 156 transitions. [2024-11-09 02:43:52,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 1474 transitions, 39627 flow [2024-11-09 02:43:54,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1474 transitions, 38328 flow, removed 44 selfloop flow, removed 18 redundant places. [2024-11-09 02:43:54,175 INFO L231 Difference]: Finished difference. Result has 536 places, 1421 transitions, 36666 flow [2024-11-09 02:43:54,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=29686, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=600, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=36666, PETRI_PLACES=536, PETRI_TRANSITIONS=1421} [2024-11-09 02:43:54,176 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 516 predicate places. [2024-11-09 02:43:54,176 INFO L471 AbstractCegarLoop]: Abstraction has has 536 places, 1421 transitions, 36666 flow [2024-11-09 02:43:54,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:54,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:54,176 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:54,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-09 02:43:54,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:54,377 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:54,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:54,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1215023603, now seen corresponding path program 59 times [2024-11-09 02:43:54,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:54,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895878106] [2024-11-09 02:43:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:54,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:54,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:54,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895878106] [2024-11-09 02:43:54,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895878106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375718298] [2024-11-09 02:43:54,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:43:54,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:54,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:54,436 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:54,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-09 02:43:54,483 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 02:43:54,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:54,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:54,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:54,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:54,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375718298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:54,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:54,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-09 02:43:54,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784011465] [2024-11-09 02:43:54,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:54,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:43:54,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:43:54,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:43:54,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:54,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 1421 transitions, 36666 flow. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:54,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:54,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:54,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:43:57,006 INFO L124 PetriNetUnfolderBase]: 2989/4879 cut-off events. [2024-11-09 02:43:57,006 INFO L125 PetriNetUnfolderBase]: For 234814/234814 co-relation queries the response was YES. [2024-11-09 02:43:57,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60231 conditions, 4879 events. 2989/4879 cut-off events. For 234814/234814 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 30105 event pairs, 174 based on Foata normal form. 10/4889 useless extension candidates. Maximal degree in co-relation 60028. Up to 2550 conditions per place. [2024-11-09 02:43:57,085 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 1006 selfloop transitions, 565 changer transitions 0/1572 dead transitions. [2024-11-09 02:43:57,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1572 transitions, 42900 flow [2024-11-09 02:43:57,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 02:43:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-09 02:43:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 209 transitions. [2024-11-09 02:43:57,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4003831417624521 [2024-11-09 02:43:57,086 INFO L175 Difference]: Start difference. First operand has 536 places, 1421 transitions, 36666 flow. Second operand 29 states and 209 transitions. [2024-11-09 02:43:57,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1572 transitions, 42900 flow [2024-11-09 02:43:59,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 1572 transitions, 41130 flow, removed 645 selfloop flow, removed 9 redundant places. [2024-11-09 02:43:59,074 INFO L231 Difference]: Finished difference. Result has 558 places, 1520 transitions, 38772 flow [2024-11-09 02:43:59,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34976, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=474, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=38772, PETRI_PLACES=558, PETRI_TRANSITIONS=1520} [2024-11-09 02:43:59,075 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 538 predicate places. [2024-11-09 02:43:59,075 INFO L471 AbstractCegarLoop]: Abstraction has has 558 places, 1520 transitions, 38772 flow [2024-11-09 02:43:59,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:59,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:43:59,075 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:43:59,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-09 02:43:59,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:59,276 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:43:59,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:43:59,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1588448781, now seen corresponding path program 60 times [2024-11-09 02:43:59,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:43:59,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172832483] [2024-11-09 02:43:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:43:59,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:43:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:43:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:59,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:43:59,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172832483] [2024-11-09 02:43:59,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172832483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:43:59,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388725499] [2024-11-09 02:43:59,337 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:43:59,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:43:59,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:43:59,339 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:43:59,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-09 02:43:59,392 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:43:59,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:43:59,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:43:59,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:43:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:59,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:43:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:43:59,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388725499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:43:59,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:43:59,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2024-11-09 02:43:59,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701032506] [2024-11-09 02:43:59,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:43:59,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:43:59,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:43:59,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:43:59,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:43:59,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-11-09 02:43:59,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 1520 transitions, 38772 flow. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:43:59,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:43:59,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-11-09 02:43:59,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:44:02,025 INFO L124 PetriNetUnfolderBase]: 3060/5051 cut-off events. [2024-11-09 02:44:02,026 INFO L125 PetriNetUnfolderBase]: For 244827/244827 co-relation queries the response was YES. [2024-11-09 02:44:02,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61678 conditions, 5051 events. 3060/5051 cut-off events. For 244827/244827 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 31935 event pairs, 167 based on Foata normal form. 64/5115 useless extension candidates. Maximal degree in co-relation 61472. Up to 1544 conditions per place. [2024-11-09 02:44:02,117 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 657 selfloop transitions, 944 changer transitions 1/1603 dead transitions. [2024-11-09 02:44:02,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 1603 transitions, 43718 flow [2024-11-09 02:44:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 02:44:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-09 02:44:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 187 transitions. [2024-11-09 02:44:02,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41555555555555557 [2024-11-09 02:44:02,118 INFO L175 Difference]: Start difference. First operand has 558 places, 1520 transitions, 38772 flow. Second operand 25 states and 187 transitions. [2024-11-09 02:44:02,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 1603 transitions, 43718 flow