./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-1.i -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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:02:33,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:02:33,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:02:33,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:02:33,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:02:33,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:02:33,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:02:33,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:02:33,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:02:33,608 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:02:33,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:02:33,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:02:33,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:02:33,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:02:33,611 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:02:33,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:02:33,611 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:02:33,612 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:02:33,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:02:33,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:02:33,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:02:33,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:02:33,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:02:33,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:02:33,614 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:02:33,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:02:33,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:02:33,615 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:02:33,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:02:33,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:02:33,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:02:33,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:02:33,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:02:33,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:02:33,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:02:33,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:02:33,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:02:33,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:02:33,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:02:33,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:02:33,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:02:33,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:02:33,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2024-11-12 08:02:33,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:02:33,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:02:33,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:02:33,950 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:02:33,951 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:02:33,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-1.i [2024-11-12 08:02:35,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:02:35,773 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:02:35,773 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2024-11-12 08:02:35,795 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74f0cfc7/4a3749ddaf184a97a795342c415aebba/FLAG48fd89fee [2024-11-12 08:02:35,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74f0cfc7/4a3749ddaf184a97a795342c415aebba [2024-11-12 08:02:35,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:02:35,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:02:35,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:02:35,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:02:35,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:02:35,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:02:35" (1/1) ... [2024-11-12 08:02:35,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e43198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:35, skipping insertion in model container [2024-11-12 08:02:35,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:02:35" (1/1) ... [2024-11-12 08:02:35,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:02:36,251 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/pthread/triangular-1.i[30950,30963] [2024-11-12 08:02:36,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:02:36,265 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:02:36,313 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/pthread/triangular-1.i[30950,30963] [2024-11-12 08:02:36,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:02:36,359 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:02:36,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36 WrapperNode [2024-11-12 08:02:36,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:02:36,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:02:36,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:02:36,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:02:36,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,415 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-12 08:02:36,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:02:36,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:02:36,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:02:36,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:02:36,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,431 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,451 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 08:02:36,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,456 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,472 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:02:36,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:02:36,477 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:02:36,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:02:36,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:02:36,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:36,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 08:02:36,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 08:02:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-12 08:02:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-12 08:02:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-12 08:02:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-12 08:02:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:02:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:02:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:02:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:02:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:02:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:02:36,592 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:02:36,748 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:02:36,750 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:02:36,873 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:02:36,874 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:02:36,983 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:02:36,983 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 08:02:36,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:02:36 BoogieIcfgContainer [2024-11-12 08:02:36,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:02:36,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:02:36,987 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:02:36,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:02:36,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:02:35" (1/3) ... [2024-11-12 08:02:36,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3129232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:02:36, skipping insertion in model container [2024-11-12 08:02:36,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (2/3) ... [2024-11-12 08:02:36,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3129232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:02:36, skipping insertion in model container [2024-11-12 08:02:36,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:02:36" (3/3) ... [2024-11-12 08:02:36,994 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2024-11-12 08:02:37,013 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:02:37,014 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:02:37,014 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:02:37,062 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 08:02:37,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-11-12 08:02:37,140 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-12 08:02:37,144 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:02:37,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-11-12 08:02:37,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-11-12 08:02:37,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-11-12 08:02:37,167 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:02:37,176 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;@226c091c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:02:37,177 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-12 08:02:37,188 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:02:37,190 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-12 08:02:37,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:02:37,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:37,192 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:37,193 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:37,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-11-12 08:02:37,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:37,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784026453] [2024-11-12 08:02:37,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:37,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:37,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784026453] [2024-11-12 08:02:37,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784026453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:37,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:37,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:02:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969852863] [2024-11-12 08:02:37,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:37,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:02:37,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:02:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:02:37,787 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:37,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:37,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:37,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:37,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:38,072 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-11-12 08:02:38,072 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:02:38,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 543 events. 321/543 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2179 event pairs, 62 based on Foata normal form. 12/542 useless extension candidates. Maximal degree in co-relation 1045. Up to 221 conditions per place. [2024-11-12 08:02:38,084 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-11-12 08:02:38,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-11-12 08:02:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:02:38,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:02:38,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-11-12 08:02:38,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-12 08:02:38,101 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-11-12 08:02:38,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-11-12 08:02:38,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:02:38,106 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-11-12 08:02:38,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-11-12 08:02:38,112 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-11-12 08:02:38,112 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-11-12 08:02:38,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:38,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:38,113 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:38,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:02:38,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:38,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:38,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-11-12 08:02:38,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:38,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880992261] [2024-11-12 08:02:38,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:38,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:38,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:38,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880992261] [2024-11-12 08:02:38,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880992261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:38,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:38,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:02:38,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123056739] [2024-11-12 08:02:38,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:38,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:02:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:02:38,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 08:02:38,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:38,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:38,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:38,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:38,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:38,600 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-11-12 08:02:38,600 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-11-12 08:02:38,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 689 events. 382/689 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2915 event pairs, 65 based on Foata normal form. 33/721 useless extension candidates. Maximal degree in co-relation 1572. Up to 246 conditions per place. [2024-11-12 08:02:38,607 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-11-12 08:02:38,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-11-12 08:02:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:02:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:02:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-11-12 08:02:38,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-12 08:02:38,611 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-11-12 08:02:38,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-11-12 08:02:38,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-12 08:02:38,619 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-11-12 08:02:38,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-11-12 08:02:38,620 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-11-12 08:02:38,621 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-11-12 08:02:38,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:38,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:38,621 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:38,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:02:38,622 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:38,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:38,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-11-12 08:02:38,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:38,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851956899] [2024-11-12 08:02:38,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:38,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:38,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:38,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851956899] [2024-11-12 08:02:38,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851956899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:38,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:38,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:02:38,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241089152] [2024-11-12 08:02:38,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:38,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:02:38,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:38,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:02:38,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 08:02:38,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:38,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:38,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:38,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:38,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:39,018 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-11-12 08:02:39,018 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-11-12 08:02:39,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 605 events. 328/605 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2538 event pairs, 65 based on Foata normal form. 57/661 useless extension candidates. Maximal degree in co-relation 1713. Up to 234 conditions per place. [2024-11-12 08:02:39,023 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-11-12 08:02:39,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-11-12 08:02:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:02:39,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:02:39,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-11-12 08:02:39,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-11-12 08:02:39,025 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-11-12 08:02:39,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-11-12 08:02:39,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-12 08:02:39,030 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-11-12 08:02:39,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-11-12 08:02:39,031 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-11-12 08:02:39,031 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-11-12 08:02:39,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:39,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:39,032 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:39,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:02:39,032 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:39,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:39,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 1 times [2024-11-12 08:02:39,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:39,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489881641] [2024-11-12 08:02:39,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:39,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:39,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489881641] [2024-11-12 08:02:39,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489881641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:39,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:39,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 08:02:39,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706241174] [2024-11-12 08:02:39,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:39,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:02:39,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:02:39,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:02:39,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:39,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:39,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:39,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:39,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:39,495 INFO L124 PetriNetUnfolderBase]: 337/617 cut-off events. [2024-11-12 08:02:39,495 INFO L125 PetriNetUnfolderBase]: For 1712/1724 co-relation queries the response was YES. [2024-11-12 08:02:39,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1942 conditions, 617 events. 337/617 cut-off events. For 1712/1724 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2588 event pairs, 68 based on Foata normal form. 30/646 useless extension candidates. Maximal degree in co-relation 1916. Up to 237 conditions per place. [2024-11-12 08:02:39,501 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 16 changer transitions 24/89 dead transitions. [2024-11-12 08:02:39,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 607 flow [2024-11-12 08:02:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 08:02:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 08:02:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-11-12 08:02:39,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-11-12 08:02:39,506 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 11 states and 135 transitions. [2024-11-12 08:02:39,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 607 flow [2024-11-12 08:02:39,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 540 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-12 08:02:39,520 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 279 flow [2024-11-12 08:02:39,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=279, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2024-11-12 08:02:39,521 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2024-11-12 08:02:39,522 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 279 flow [2024-11-12 08:02:39,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:39,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:39,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:39,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:02:39,523 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:39,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1744668785, now seen corresponding path program 2 times [2024-11-12 08:02:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:39,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055116988] [2024-11-12 08:02:39,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:39,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:39,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:39,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055116988] [2024-11-12 08:02:39,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055116988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:39,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:39,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 08:02:39,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548350808] [2024-11-12 08:02:39,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:39,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:02:39,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:39,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:02:39,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:02:39,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:39,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:39,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:39,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:39,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:39,949 INFO L124 PetriNetUnfolderBase]: 508/929 cut-off events. [2024-11-12 08:02:39,949 INFO L125 PetriNetUnfolderBase]: For 3237/3255 co-relation queries the response was YES. [2024-11-12 08:02:39,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 929 events. 508/929 cut-off events. For 3237/3255 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4211 event pairs, 53 based on Foata normal form. 45/971 useless extension candidates. Maximal degree in co-relation 3046. Up to 253 conditions per place. [2024-11-12 08:02:39,955 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 20 changer transitions 23/103 dead transitions. [2024-11-12 08:02:39,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 771 flow [2024-11-12 08:02:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 08:02:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 08:02:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-11-12 08:02:39,957 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-12 08:02:39,957 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 279 flow. Second operand 11 states and 141 transitions. [2024-11-12 08:02:39,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 771 flow [2024-11-12 08:02:39,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 705 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-11-12 08:02:39,964 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 376 flow [2024-11-12 08:02:39,965 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=376, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2024-11-12 08:02:39,965 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-11-12 08:02:39,966 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 376 flow [2024-11-12 08:02:39,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:39,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:39,966 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:39,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 08:02:39,966 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:39,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 3 times [2024-11-12 08:02:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:39,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919125183] [2024-11-12 08:02:39,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:39,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:40,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:40,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919125183] [2024-11-12 08:02:40,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919125183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:40,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:40,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 08:02:40,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368889732] [2024-11-12 08:02:40,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:40,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:02:40,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:40,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:02:40,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:02:40,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:40,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:40,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:40,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:40,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:40,358 INFO L124 PetriNetUnfolderBase]: 481/884 cut-off events. [2024-11-12 08:02:40,358 INFO L125 PetriNetUnfolderBase]: For 5184/5202 co-relation queries the response was YES. [2024-11-12 08:02:40,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3384 conditions, 884 events. 481/884 cut-off events. For 5184/5202 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4001 event pairs, 59 based on Foata normal form. 63/944 useless extension candidates. Maximal degree in co-relation 3352. Up to 154 conditions per place. [2024-11-12 08:02:40,364 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 25 changer transitions 33/106 dead transitions. [2024-11-12 08:02:40,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 106 transitions, 964 flow [2024-11-12 08:02:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 08:02:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 08:02:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-11-12 08:02:40,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-11-12 08:02:40,366 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 376 flow. Second operand 11 states and 138 transitions. [2024-11-12 08:02:40,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 106 transitions, 964 flow [2024-11-12 08:02:40,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 106 transitions, 893 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-11-12 08:02:40,378 INFO L231 Difference]: Finished difference. Result has 73 places, 48 transitions, 475 flow [2024-11-12 08:02:40,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=475, PETRI_PLACES=73, PETRI_TRANSITIONS=48} [2024-11-12 08:02:40,379 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-11-12 08:02:40,379 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 48 transitions, 475 flow [2024-11-12 08:02:40,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:40,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:40,379 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:40,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:02:40,380 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:40,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:40,380 INFO L85 PathProgramCache]: Analyzing trace with hash 391260105, now seen corresponding path program 1 times [2024-11-12 08:02:40,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:40,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608124521] [2024-11-12 08:02:40,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:40,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:40,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:40,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608124521] [2024-11-12 08:02:40,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608124521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:40,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612054304] [2024-11-12 08:02:40,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:40,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:40,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:40,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:40,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:02:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:40,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 08:02:40,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:40,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:40,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612054304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:40,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:40,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-12 08:02:40,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479143557] [2024-11-12 08:02:40,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:40,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 08:02:40,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:40,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 08:02:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-12 08:02:40,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:40,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 48 transitions, 475 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 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) [2024-11-12 08:02:40,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:40,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:40,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:41,366 INFO L124 PetriNetUnfolderBase]: 589/1094 cut-off events. [2024-11-12 08:02:41,367 INFO L125 PetriNetUnfolderBase]: For 10490/10508 co-relation queries the response was YES. [2024-11-12 08:02:41,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4735 conditions, 1094 events. 589/1094 cut-off events. For 10490/10508 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4691 event pairs, 149 based on Foata normal form. 81/1174 useless extension candidates. Maximal degree in co-relation 4699. Up to 522 conditions per place. [2024-11-12 08:02:41,376 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 67 selfloop transitions, 17 changer transitions 67/154 dead transitions. [2024-11-12 08:02:41,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 1547 flow [2024-11-12 08:02:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 08:02:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-12 08:02:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2024-11-12 08:02:41,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-11-12 08:02:41,378 INFO L175 Difference]: Start difference. First operand has 73 places, 48 transitions, 475 flow. Second operand 19 states and 231 transitions. [2024-11-12 08:02:41,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 1547 flow [2024-11-12 08:02:41,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 154 transitions, 1448 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-11-12 08:02:41,394 INFO L231 Difference]: Finished difference. Result has 93 places, 54 transitions, 604 flow [2024-11-12 08:02:41,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=604, PETRI_PLACES=93, PETRI_TRANSITIONS=54} [2024-11-12 08:02:41,395 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2024-11-12 08:02:41,395 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 54 transitions, 604 flow [2024-11-12 08:02:41,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 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) [2024-11-12 08:02:41,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:41,395 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:41,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 08:02:41,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:41,597 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:41,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:41,597 INFO L85 PathProgramCache]: Analyzing trace with hash 410859599, now seen corresponding path program 2 times [2024-11-12 08:02:41,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:41,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203957307] [2024-11-12 08:02:41,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:41,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:41,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:41,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203957307] [2024-11-12 08:02:41,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203957307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:41,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041855626] [2024-11-12 08:02:41,704 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:02:41,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:41,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:41,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:41,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:02:41,768 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:02:41,768 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:41,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 08:02:41,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:41,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:41,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041855626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:41,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:41,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-12 08:02:41,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625411110] [2024-11-12 08:02:41,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:41,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 08:02:41,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:41,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 08:02:41,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-12 08:02:41,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:41,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 54 transitions, 604 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 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) [2024-11-12 08:02:41,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:41,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:41,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:42,616 INFO L124 PetriNetUnfolderBase]: 877/1613 cut-off events. [2024-11-12 08:02:42,616 INFO L125 PetriNetUnfolderBase]: For 36575/36593 co-relation queries the response was YES. [2024-11-12 08:02:42,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9220 conditions, 1613 events. 877/1613 cut-off events. For 36575/36593 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7687 event pairs, 68 based on Foata normal form. 90/1702 useless extension candidates. Maximal degree in co-relation 9174. Up to 312 conditions per place. [2024-11-12 08:02:42,632 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 88 selfloop transitions, 47 changer transitions 80/218 dead transitions. [2024-11-12 08:02:42,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 218 transitions, 2806 flow [2024-11-12 08:02:42,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 08:02:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 08:02:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 334 transitions. [2024-11-12 08:02:42,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-11-12 08:02:42,635 INFO L175 Difference]: Start difference. First operand has 93 places, 54 transitions, 604 flow. Second operand 27 states and 334 transitions. [2024-11-12 08:02:42,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 218 transitions, 2806 flow [2024-11-12 08:02:42,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 218 transitions, 2262 flow, removed 261 selfloop flow, removed 12 redundant places. [2024-11-12 08:02:42,666 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 1007 flow [2024-11-12 08:02:42,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1007, PETRI_PLACES=119, PETRI_TRANSITIONS=70} [2024-11-12 08:02:42,667 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 93 predicate places. [2024-11-12 08:02:42,668 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 1007 flow [2024-11-12 08:02:42,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 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) [2024-11-12 08:02:42,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:42,668 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:42,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 08:02:42,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-12 08:02:42,879 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:42,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:42,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2010162528, now seen corresponding path program 1 times [2024-11-12 08:02:42,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:42,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544680215] [2024-11-12 08:02:42,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:42,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:43,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:43,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544680215] [2024-11-12 08:02:43,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544680215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:43,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296587882] [2024-11-12 08:02:43,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:43,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:43,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:43,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:43,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:02:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:43,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:02:43,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:43,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:43,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296587882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:43,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:43,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-12 08:02:43,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402170557] [2024-11-12 08:02:43,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:43,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:02:43,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:43,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:02:43,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:02:43,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:43,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 70 transitions, 1007 flow. Second operand has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:43,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:43,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:43,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:44,099 INFO L124 PetriNetUnfolderBase]: 1111/2082 cut-off events. [2024-11-12 08:02:44,100 INFO L125 PetriNetUnfolderBase]: For 86453/86459 co-relation queries the response was YES. [2024-11-12 08:02:44,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14592 conditions, 2082 events. 1111/2082 cut-off events. For 86453/86459 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10786 event pairs, 153 based on Foata normal form. 69/2148 useless extension candidates. Maximal degree in co-relation 14534. Up to 490 conditions per place. [2024-11-12 08:02:44,124 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 99 selfloop transitions, 51 changer transitions 67/220 dead transitions. [2024-11-12 08:02:44,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 220 transitions, 3619 flow [2024-11-12 08:02:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 08:02:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 08:02:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-11-12 08:02:44,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-11-12 08:02:44,127 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 1007 flow. Second operand 25 states and 309 transitions. [2024-11-12 08:02:44,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 220 transitions, 3619 flow [2024-11-12 08:02:44,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 220 transitions, 3039 flow, removed 274 selfloop flow, removed 15 redundant places. [2024-11-12 08:02:44,206 INFO L231 Difference]: Finished difference. Result has 135 places, 81 transitions, 1293 flow [2024-11-12 08:02:44,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1293, PETRI_PLACES=135, PETRI_TRANSITIONS=81} [2024-11-12 08:02:44,207 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 109 predicate places. [2024-11-12 08:02:44,207 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 81 transitions, 1293 flow [2024-11-12 08:02:44,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:44,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:44,207 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:44,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 08:02:44,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:44,408 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:44,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:44,409 INFO L85 PathProgramCache]: Analyzing trace with hash 427004722, now seen corresponding path program 2 times [2024-11-12 08:02:44,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:44,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136292212] [2024-11-12 08:02:44,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:44,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:44,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:44,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136292212] [2024-11-12 08:02:44,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136292212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:44,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837943643] [2024-11-12 08:02:44,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:02:44,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:44,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:44,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:44,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 08:02:44,628 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:02:44,629 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:44,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:02:44,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:44,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:44,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837943643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:44,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:44,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-12 08:02:44,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712358167] [2024-11-12 08:02:44,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:44,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 08:02:44,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:44,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 08:02:44,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:02:44,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:44,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 81 transitions, 1293 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:44,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:44,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:44,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:45,795 INFO L124 PetriNetUnfolderBase]: 1192/2266 cut-off events. [2024-11-12 08:02:45,796 INFO L125 PetriNetUnfolderBase]: For 130343/130349 co-relation queries the response was YES. [2024-11-12 08:02:45,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16874 conditions, 2266 events. 1192/2266 cut-off events. For 130343/130349 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11883 event pairs, 38 based on Foata normal form. 132/2397 useless extension candidates. Maximal degree in co-relation 16809. Up to 480 conditions per place. [2024-11-12 08:02:45,820 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 89 selfloop transitions, 76 changer transitions 93/261 dead transitions. [2024-11-12 08:02:45,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 261 transitions, 4879 flow [2024-11-12 08:02:45,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-12 08:02:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-12 08:02:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 345 transitions. [2024-11-12 08:02:45,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2024-11-12 08:02:45,822 INFO L175 Difference]: Start difference. First operand has 135 places, 81 transitions, 1293 flow. Second operand 28 states and 345 transitions. [2024-11-12 08:02:45,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 261 transitions, 4879 flow [2024-11-12 08:02:45,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 261 transitions, 4140 flow, removed 336 selfloop flow, removed 18 redundant places. [2024-11-12 08:02:45,943 INFO L231 Difference]: Finished difference. Result has 154 places, 100 transitions, 1854 flow [2024-11-12 08:02:45,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1854, PETRI_PLACES=154, PETRI_TRANSITIONS=100} [2024-11-12 08:02:45,944 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 128 predicate places. [2024-11-12 08:02:45,944 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 100 transitions, 1854 flow [2024-11-12 08:02:45,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:45,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:45,945 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:45,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 08:02:46,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:46,145 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:46,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:46,146 INFO L85 PathProgramCache]: Analyzing trace with hash 899107870, now seen corresponding path program 3 times [2024-11-12 08:02:46,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:46,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129343762] [2024-11-12 08:02:46,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:46,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:46,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:46,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129343762] [2024-11-12 08:02:46,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129343762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:46,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612769651] [2024-11-12 08:02:46,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:02:46,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:46,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:46,351 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:46,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 08:02:46,408 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-12 08:02:46,409 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:46,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:02:46,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:46,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:46,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612769651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:46,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-11-12 08:02:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241782542] [2024-11-12 08:02:46,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:46,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:02:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:02:46,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:02:46,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:46,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 100 transitions, 1854 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:46,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:46,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:46,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:48,086 INFO L124 PetriNetUnfolderBase]: 1426/2650 cut-off events. [2024-11-12 08:02:48,087 INFO L125 PetriNetUnfolderBase]: For 187471/187477 co-relation queries the response was YES. [2024-11-12 08:02:48,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21519 conditions, 2650 events. 1426/2650 cut-off events. For 187471/187477 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13546 event pairs, 40 based on Foata normal form. 60/2709 useless extension candidates. Maximal degree in co-relation 21446. Up to 558 conditions per place. [2024-11-12 08:02:48,122 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 114 selfloop transitions, 98 changer transitions 91/306 dead transitions. [2024-11-12 08:02:48,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 306 transitions, 6134 flow [2024-11-12 08:02:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-12 08:02:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-12 08:02:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 417 transitions. [2024-11-12 08:02:48,125 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5110294117647058 [2024-11-12 08:02:48,125 INFO L175 Difference]: Start difference. First operand has 154 places, 100 transitions, 1854 flow. Second operand 34 states and 417 transitions. [2024-11-12 08:02:48,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 306 transitions, 6134 flow [2024-11-12 08:02:48,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 306 transitions, 5138 flow, removed 468 selfloop flow, removed 19 redundant places. [2024-11-12 08:02:48,339 INFO L231 Difference]: Finished difference. Result has 177 places, 122 transitions, 2420 flow [2024-11-12 08:02:48,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2420, PETRI_PLACES=177, PETRI_TRANSITIONS=122} [2024-11-12 08:02:48,340 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 151 predicate places. [2024-11-12 08:02:48,340 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 122 transitions, 2420 flow [2024-11-12 08:02:48,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:48,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:48,341 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:48,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 08:02:48,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-12 08:02:48,542 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:48,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash -133490771, now seen corresponding path program 4 times [2024-11-12 08:02:48,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:48,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500208795] [2024-11-12 08:02:48,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:48,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:48,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500208795] [2024-11-12 08:02:48,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500208795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:48,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662545483] [2024-11-12 08:02:48,850 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:02:48,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:48,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:48,852 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) [2024-11-12 08:02:48,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 08:02:48,921 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:02:48,921 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:48,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:02:48,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:49,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:49,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662545483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:49,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:49,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-11-12 08:02:49,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075624690] [2024-11-12 08:02:49,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:49,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:02:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:02:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:02:49,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:49,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 122 transitions, 2420 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:49,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:49,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:49,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:49,908 INFO L124 PetriNetUnfolderBase]: 1408/2676 cut-off events. [2024-11-12 08:02:49,908 INFO L125 PetriNetUnfolderBase]: For 207785/207791 co-relation queries the response was YES. [2024-11-12 08:02:49,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21194 conditions, 2676 events. 1408/2676 cut-off events. For 207785/207791 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14202 event pairs, 477 based on Foata normal form. 33/2706 useless extension candidates. Maximal degree in co-relation 21115. Up to 1645 conditions per place. [2024-11-12 08:02:49,989 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 134 selfloop transitions, 36 changer transitions 47/220 dead transitions. [2024-11-12 08:02:49,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 220 transitions, 4638 flow [2024-11-12 08:02:49,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 08:02:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-12 08:02:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 225 transitions. [2024-11-12 08:02:49,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-11-12 08:02:49,991 INFO L175 Difference]: Start difference. First operand has 177 places, 122 transitions, 2420 flow. Second operand 19 states and 225 transitions. [2024-11-12 08:02:49,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 220 transitions, 4638 flow [2024-11-12 08:02:50,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 220 transitions, 3635 flow, removed 462 selfloop flow, removed 25 redundant places. [2024-11-12 08:02:50,262 INFO L231 Difference]: Finished difference. Result has 169 places, 126 transitions, 2061 flow [2024-11-12 08:02:50,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2061, PETRI_PLACES=169, PETRI_TRANSITIONS=126} [2024-11-12 08:02:50,263 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 143 predicate places. [2024-11-12 08:02:50,263 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 126 transitions, 2061 flow [2024-11-12 08:02:50,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:50,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:50,264 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:50,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 08:02:50,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:50,465 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:50,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:50,465 INFO L85 PathProgramCache]: Analyzing trace with hash -450928797, now seen corresponding path program 5 times [2024-11-12 08:02:50,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:50,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882810631] [2024-11-12 08:02:50,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:50,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:50,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:50,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882810631] [2024-11-12 08:02:50,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882810631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557248275] [2024-11-12 08:02:50,703 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:02:50,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:50,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:50,704 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) [2024-11-12 08:02:50,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 08:02:50,761 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-12 08:02:50,762 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:50,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:02:50,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:50,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:51,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557248275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:51,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:51,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-11-12 08:02:51,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034757719] [2024-11-12 08:02:51,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:51,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 08:02:51,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:51,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 08:02:51,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:02:51,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:51,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 126 transitions, 2061 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:51,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:51,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:51,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:51,910 INFO L124 PetriNetUnfolderBase]: 1570/3051 cut-off events. [2024-11-12 08:02:51,911 INFO L125 PetriNetUnfolderBase]: For 162098/162104 co-relation queries the response was YES. [2024-11-12 08:02:51,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20842 conditions, 3051 events. 1570/3051 cut-off events. For 162098/162104 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 17075 event pairs, 396 based on Foata normal form. 33/3083 useless extension candidates. Maximal degree in co-relation 20772. Up to 1489 conditions per place. [2024-11-12 08:02:51,936 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 135 selfloop transitions, 62 changer transitions 53/253 dead transitions. [2024-11-12 08:02:51,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 253 transitions, 4428 flow [2024-11-12 08:02:51,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-12 08:02:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-12 08:02:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 261 transitions. [2024-11-12 08:02:51,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4943181818181818 [2024-11-12 08:02:51,941 INFO L175 Difference]: Start difference. First operand has 169 places, 126 transitions, 2061 flow. Second operand 22 states and 261 transitions. [2024-11-12 08:02:51,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 253 transitions, 4428 flow [2024-11-12 08:02:52,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 253 transitions, 4236 flow, removed 72 selfloop flow, removed 12 redundant places. [2024-11-12 08:02:52,151 INFO L231 Difference]: Finished difference. Result has 187 places, 145 transitions, 2612 flow [2024-11-12 08:02:52,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2612, PETRI_PLACES=187, PETRI_TRANSITIONS=145} [2024-11-12 08:02:52,154 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 161 predicate places. [2024-11-12 08:02:52,154 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 145 transitions, 2612 flow [2024-11-12 08:02:52,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:52,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:52,155 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:52,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 08:02:52,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:52,356 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:52,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash -584449067, now seen corresponding path program 6 times [2024-11-12 08:02:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:52,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577412499] [2024-11-12 08:02:52,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:52,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:52,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577412499] [2024-11-12 08:02:52,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577412499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004713298] [2024-11-12 08:02:52,566 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:02:52,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:52,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:52,568 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) [2024-11-12 08:02:52,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 08:02:52,627 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-12 08:02:52,627 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:52,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:02:52,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:52,705 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:52,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004713298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:52,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:52,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-11-12 08:02:52,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408404996] [2024-11-12 08:02:52,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:52,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:02:52,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:52,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:02:52,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:02:52,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:52,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 145 transitions, 2612 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:52,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:52,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:52,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:53,528 INFO L124 PetriNetUnfolderBase]: 1624/3177 cut-off events. [2024-11-12 08:02:53,529 INFO L125 PetriNetUnfolderBase]: For 188940/188946 co-relation queries the response was YES. [2024-11-12 08:02:53,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22672 conditions, 3177 events. 1624/3177 cut-off events. For 188940/188946 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 17978 event pairs, 327 based on Foata normal form. 33/3207 useless extension candidates. Maximal degree in co-relation 22593. Up to 1171 conditions per place. [2024-11-12 08:02:53,556 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 83 changer transitions 51/256 dead transitions. [2024-11-12 08:02:53,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 256 transitions, 4862 flow [2024-11-12 08:02:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 08:02:53,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-12 08:02:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 250 transitions. [2024-11-12 08:02:53,558 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-11-12 08:02:53,558 INFO L175 Difference]: Start difference. First operand has 187 places, 145 transitions, 2612 flow. Second operand 21 states and 250 transitions. [2024-11-12 08:02:53,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 256 transitions, 4862 flow [2024-11-12 08:02:53,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 256 transitions, 4584 flow, removed 117 selfloop flow, removed 11 redundant places. [2024-11-12 08:02:53,927 INFO L231 Difference]: Finished difference. Result has 200 places, 151 transitions, 2856 flow [2024-11-12 08:02:53,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2856, PETRI_PLACES=200, PETRI_TRANSITIONS=151} [2024-11-12 08:02:53,928 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 174 predicate places. [2024-11-12 08:02:53,928 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 151 transitions, 2856 flow [2024-11-12 08:02:53,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:53,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:53,928 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:53,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 08:02:54,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-12 08:02:54,129 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:54,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:54,130 INFO L85 PathProgramCache]: Analyzing trace with hash -176872313, now seen corresponding path program 7 times [2024-11-12 08:02:54,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:54,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496933030] [2024-11-12 08:02:54,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:54,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:54,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496933030] [2024-11-12 08:02:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496933030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816563419] [2024-11-12 08:02:54,396 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:02:54,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:54,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:54,398 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) [2024-11-12 08:02:54,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 08:02:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:54,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:02:54,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:54,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:54,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816563419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:54,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:54,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-11-12 08:02:54,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935394868] [2024-11-12 08:02:54,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:54,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 08:02:54,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:54,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 08:02:54,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:02:54,733 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:54,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 151 transitions, 2856 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:54,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:54,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:54,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:55,608 INFO L124 PetriNetUnfolderBase]: 1750/3465 cut-off events. [2024-11-12 08:02:55,608 INFO L125 PetriNetUnfolderBase]: For 215015/215021 co-relation queries the response was YES. [2024-11-12 08:02:55,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25184 conditions, 3465 events. 1750/3465 cut-off events. For 215015/215021 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 20383 event pairs, 258 based on Foata normal form. 33/3497 useless extension candidates. Maximal degree in co-relation 25101. Up to 1033 conditions per place. [2024-11-12 08:02:55,644 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 122 selfloop transitions, 104 changer transitions 57/286 dead transitions. [2024-11-12 08:02:55,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 286 transitions, 5504 flow [2024-11-12 08:02:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 08:02:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 08:02:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 287 transitions. [2024-11-12 08:02:55,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4982638888888889 [2024-11-12 08:02:55,646 INFO L175 Difference]: Start difference. First operand has 200 places, 151 transitions, 2856 flow. Second operand 24 states and 287 transitions. [2024-11-12 08:02:55,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 286 transitions, 5504 flow [2024-11-12 08:02:56,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 286 transitions, 5144 flow, removed 138 selfloop flow, removed 13 redundant places. [2024-11-12 08:02:56,045 INFO L231 Difference]: Finished difference. Result has 217 places, 166 transitions, 3409 flow [2024-11-12 08:02:56,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3409, PETRI_PLACES=217, PETRI_TRANSITIONS=166} [2024-11-12 08:02:56,045 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 191 predicate places. [2024-11-12 08:02:56,046 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 166 transitions, 3409 flow [2024-11-12 08:02:56,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:56,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:56,046 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:56,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 08:02:56,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-12 08:02:56,247 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:56,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:56,247 INFO L85 PathProgramCache]: Analyzing trace with hash 552481663, now seen corresponding path program 8 times [2024-11-12 08:02:56,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:56,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457125799] [2024-11-12 08:02:56,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:56,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:56,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:56,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457125799] [2024-11-12 08:02:56,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457125799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:56,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148196092] [2024-11-12 08:02:56,454 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:02:56,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:56,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:56,457 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) [2024-11-12 08:02:56,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 08:02:56,517 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:02:56,518 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:56,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:02:56,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:56,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:56,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148196092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:56,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:56,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-11-12 08:02:56,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95914215] [2024-11-12 08:02:56,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:56,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:02:56,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:02:56,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:02:56,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:56,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 166 transitions, 3409 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:56,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:56,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:56,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:57,741 INFO L124 PetriNetUnfolderBase]: 1840/3672 cut-off events. [2024-11-12 08:02:57,741 INFO L125 PetriNetUnfolderBase]: For 231043/231049 co-relation queries the response was YES. [2024-11-12 08:02:57,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27065 conditions, 3672 events. 1840/3672 cut-off events. For 231043/231049 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 22147 event pairs, 237 based on Foata normal form. 33/3702 useless extension candidates. Maximal degree in co-relation 26975. Up to 859 conditions per place. [2024-11-12 08:02:57,777 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 115 selfloop transitions, 121 changer transitions 55/294 dead transitions. [2024-11-12 08:02:57,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 294 transitions, 6067 flow [2024-11-12 08:02:57,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-12 08:02:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-12 08:02:57,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 276 transitions. [2024-11-12 08:02:57,779 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-12 08:02:57,779 INFO L175 Difference]: Start difference. First operand has 217 places, 166 transitions, 3409 flow. Second operand 23 states and 276 transitions. [2024-11-12 08:02:57,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 294 transitions, 6067 flow [2024-11-12 08:02:58,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 294 transitions, 5693 flow, removed 132 selfloop flow, removed 16 redundant places. [2024-11-12 08:02:58,155 INFO L231 Difference]: Finished difference. Result has 229 places, 177 transitions, 3875 flow [2024-11-12 08:02:58,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3875, PETRI_PLACES=229, PETRI_TRANSITIONS=177} [2024-11-12 08:02:58,156 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 203 predicate places. [2024-11-12 08:02:58,156 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 177 transitions, 3875 flow [2024-11-12 08:02:58,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:58,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:58,157 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:58,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 08:02:58,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 08:02:58,358 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:58,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:58,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1272202843, now seen corresponding path program 9 times [2024-11-12 08:02:58,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:58,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669093497] [2024-11-12 08:02:58,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:58,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:58,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:58,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669093497] [2024-11-12 08:02:58,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669093497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:58,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772768534] [2024-11-12 08:02:58,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:02:58,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:58,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:58,580 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) [2024-11-12 08:02:58,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 08:02:58,642 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-12 08:02:58,642 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:58,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:02:58,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:58,736 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:58,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:58,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772768534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:58,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:58,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-11-12 08:02:58,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658141041] [2024-11-12 08:02:58,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:58,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 08:02:58,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:58,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 08:02:58,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:02:58,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:58,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 177 transitions, 3875 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:02:58,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:58,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:58,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:59,908 INFO L124 PetriNetUnfolderBase]: 1930/3876 cut-off events. [2024-11-12 08:02:59,908 INFO L125 PetriNetUnfolderBase]: For 261665/261671 co-relation queries the response was YES. [2024-11-12 08:02:59,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29354 conditions, 3876 events. 1930/3876 cut-off events. For 261665/261671 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 23878 event pairs, 174 based on Foata normal form. 33/3908 useless extension candidates. Maximal degree in co-relation 29258. Up to 888 conditions per place. [2024-11-12 08:02:59,939 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 118 selfloop transitions, 138 changer transitions 61/320 dead transitions. [2024-11-12 08:02:59,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 320 transitions, 6735 flow [2024-11-12 08:02:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 08:02:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 08:02:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 313 transitions. [2024-11-12 08:02:59,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5016025641025641 [2024-11-12 08:02:59,941 INFO L175 Difference]: Start difference. First operand has 229 places, 177 transitions, 3875 flow. Second operand 26 states and 313 transitions. [2024-11-12 08:02:59,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 320 transitions, 6735 flow [2024-11-12 08:03:00,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 320 transitions, 6261 flow, removed 168 selfloop flow, removed 16 redundant places. [2024-11-12 08:03:00,283 INFO L231 Difference]: Finished difference. Result has 243 places, 188 transitions, 4314 flow [2024-11-12 08:03:00,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4314, PETRI_PLACES=243, PETRI_TRANSITIONS=188} [2024-11-12 08:03:00,284 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 217 predicate places. [2024-11-12 08:03:00,284 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 188 transitions, 4314 flow [2024-11-12 08:03:00,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:00,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:03:00,285 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:03:00,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 08:03:00,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 08:03:00,485 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:03:00,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:00,486 INFO L85 PathProgramCache]: Analyzing trace with hash -531512277, now seen corresponding path program 10 times [2024-11-12 08:03:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:00,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623981753] [2024-11-12 08:03:00,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:00,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:00,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:00,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623981753] [2024-11-12 08:03:00,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623981753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:03:00,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657835152] [2024-11-12 08:03:00,755 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:03:00,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:00,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:03:00,758 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) [2024-11-12 08:03:00,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 08:03:00,819 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:03:00,820 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:03:00,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:03:00,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:03:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:00,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:03:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:01,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657835152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:03:01,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:03:01,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-11-12 08:03:01,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874134855] [2024-11-12 08:03:01,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:03:01,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:03:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:03:01,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:03:01,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:03:01,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 188 transitions, 4314 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:01,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:01,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:03:01,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:02,206 INFO L124 PetriNetUnfolderBase]: 2002/4038 cut-off events. [2024-11-12 08:03:02,206 INFO L125 PetriNetUnfolderBase]: For 283050/283056 co-relation queries the response was YES. [2024-11-12 08:03:02,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31107 conditions, 4038 events. 2002/4038 cut-off events. For 283050/283056 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 25220 event pairs, 153 based on Foata normal form. 33/4068 useless extension candidates. Maximal degree in co-relation 31006. Up to 924 conditions per place. [2024-11-12 08:03:02,236 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 114 selfloop transitions, 150 changer transitions 59/326 dead transitions. [2024-11-12 08:03:02,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 326 transitions, 7218 flow [2024-11-12 08:03:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 08:03:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 08:03:02,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 302 transitions. [2024-11-12 08:03:02,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2024-11-12 08:03:02,239 INFO L175 Difference]: Start difference. First operand has 243 places, 188 transitions, 4314 flow. Second operand 25 states and 302 transitions. [2024-11-12 08:03:02,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 326 transitions, 7218 flow [2024-11-12 08:03:02,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 326 transitions, 6694 flow, removed 173 selfloop flow, removed 20 redundant places. [2024-11-12 08:03:02,617 INFO L231 Difference]: Finished difference. Result has 251 places, 197 transitions, 4663 flow [2024-11-12 08:03:02,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3922, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4663, PETRI_PLACES=251, PETRI_TRANSITIONS=197} [2024-11-12 08:03:02,617 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 225 predicate places. [2024-11-12 08:03:02,617 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 197 transitions, 4663 flow [2024-11-12 08:03:02,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:02,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:03:02,618 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:03:02,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 08:03:02,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 08:03:02,819 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:03:02,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:02,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1865814495, now seen corresponding path program 11 times [2024-11-12 08:03:02,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:02,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443341849] [2024-11-12 08:03:02,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:02,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:02,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:02,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443341849] [2024-11-12 08:03:02,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443341849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:03:02,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319919198] [2024-11-12 08:03:02,988 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:03:02,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:02,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:03:02,989 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) [2024-11-12 08:03:02,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 08:03:03,037 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-12 08:03:03,038 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:03:03,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:03:03,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:03:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:03,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:03:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:03,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319919198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:03:03,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:03:03,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-11-12 08:03:03,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164186258] [2024-11-12 08:03:03,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:03:03,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 08:03:03,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:03,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 08:03:03,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:03:03,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:03:03,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 197 transitions, 4663 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:03,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:03,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:03:03,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:04,513 INFO L124 PetriNetUnfolderBase]: 2101/4245 cut-off events. [2024-11-12 08:03:04,514 INFO L125 PetriNetUnfolderBase]: For 305493/305499 co-relation queries the response was YES. [2024-11-12 08:03:04,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32941 conditions, 4245 events. 2101/4245 cut-off events. For 305493/305499 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 26719 event pairs, 84 based on Foata normal form. 33/4277 useless extension candidates. Maximal degree in co-relation 32836. Up to 966 conditions per place. [2024-11-12 08:03:04,560 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 166 changer transitions 63/351 dead transitions. [2024-11-12 08:03:04,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 351 transitions, 7718 flow [2024-11-12 08:03:04,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-12 08:03:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-12 08:03:04,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 339 transitions. [2024-11-12 08:03:04,562 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5044642857142857 [2024-11-12 08:03:04,562 INFO L175 Difference]: Start difference. First operand has 251 places, 197 transitions, 4663 flow. Second operand 28 states and 339 transitions. [2024-11-12 08:03:04,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 351 transitions, 7718 flow [2024-11-12 08:03:05,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 351 transitions, 7156 flow, removed 174 selfloop flow, removed 20 redundant places. [2024-11-12 08:03:05,085 INFO L231 Difference]: Finished difference. Result has 262 places, 207 transitions, 4989 flow [2024-11-12 08:03:05,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4235, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4989, PETRI_PLACES=262, PETRI_TRANSITIONS=207} [2024-11-12 08:03:05,086 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 236 predicate places. [2024-11-12 08:03:05,086 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 207 transitions, 4989 flow [2024-11-12 08:03:05,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:05,087 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:03:05,087 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:03:05,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-12 08:03:05,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:05,288 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:03:05,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash 334855933, now seen corresponding path program 12 times [2024-11-12 08:03:05,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:05,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471643025] [2024-11-12 08:03:05,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:05,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:05,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:05,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471643025] [2024-11-12 08:03:05,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471643025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:03:05,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016611023] [2024-11-12 08:03:05,574 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:03:05,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:05,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:03:05,576 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) [2024-11-12 08:03:05,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 08:03:05,638 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-12 08:03:05,639 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:03:05,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:03:05,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:03:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:05,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:03:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:05,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016611023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:03:05,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:03:05,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-11-12 08:03:05,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937487290] [2024-11-12 08:03:05,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:03:05,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:03:05,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:05,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:03:05,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:03:05,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:03:05,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 207 transitions, 4989 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:05,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:05,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:03:05,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:06,921 INFO L124 PetriNetUnfolderBase]: 2272/4566 cut-off events. [2024-11-12 08:03:06,921 INFO L125 PetriNetUnfolderBase]: For 350106/350112 co-relation queries the response was YES. [2024-11-12 08:03:06,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36520 conditions, 4566 events. 2272/4566 cut-off events. For 350106/350112 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 28964 event pairs, 81 based on Foata normal form. 33/4596 useless extension candidates. Maximal degree in co-relation 36411. Up to 1032 conditions per place. [2024-11-12 08:03:06,961 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 128 selfloop transitions, 174 changer transitions 55/360 dead transitions. [2024-11-12 08:03:06,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 360 transitions, 8295 flow [2024-11-12 08:03:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 08:03:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 08:03:06,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 332 transitions. [2024-11-12 08:03:06,963 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-11-12 08:03:06,963 INFO L175 Difference]: Start difference. First operand has 262 places, 207 transitions, 4989 flow. Second operand 27 states and 332 transitions. [2024-11-12 08:03:06,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 360 transitions, 8295 flow [2024-11-12 08:03:07,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 360 transitions, 7718 flow, removed 189 selfloop flow, removed 21 redundant places. [2024-11-12 08:03:07,581 INFO L231 Difference]: Finished difference. Result has 271 places, 215 transitions, 5398 flow [2024-11-12 08:03:07,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4570, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5398, PETRI_PLACES=271, PETRI_TRANSITIONS=215} [2024-11-12 08:03:07,582 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 245 predicate places. [2024-11-12 08:03:07,582 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 215 transitions, 5398 flow [2024-11-12 08:03:07,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:07,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:03:07,583 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:03:07,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-12 08:03:07,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:07,783 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:03:07,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash 400366853, now seen corresponding path program 13 times [2024-11-12 08:03:07,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:07,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012997466] [2024-11-12 08:03:07,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:07,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:07,947 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:07,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:07,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012997466] [2024-11-12 08:03:07,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012997466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:03:07,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805900847] [2024-11-12 08:03:07,948 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:03:07,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:07,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:03:07,950 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) [2024-11-12 08:03:07,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 08:03:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:08,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:03:08,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:03:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:08,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:03:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:08,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805900847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:03:08,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:03:08,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-11-12 08:03:08,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649940299] [2024-11-12 08:03:08,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:03:08,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 08:03:08,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:08,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 08:03:08,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:03:08,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:03:08,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 215 transitions, 5398 flow. Second operand has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:08,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:08,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:03:08,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:09,604 INFO L124 PetriNetUnfolderBase]: 2218/4482 cut-off events. [2024-11-12 08:03:09,604 INFO L125 PetriNetUnfolderBase]: For 364456/364462 co-relation queries the response was YES. [2024-11-12 08:03:09,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36415 conditions, 4482 events. 2218/4482 cut-off events. For 364456/364462 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 28459 event pairs, 78 based on Foata normal form. 51/4532 useless extension candidates. Maximal degree in co-relation 36301. Up to 1008 conditions per place. [2024-11-12 08:03:09,662 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 177 changer transitions 67/366 dead transitions. [2024-11-12 08:03:09,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 366 transitions, 8612 flow [2024-11-12 08:03:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-12 08:03:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-12 08:03:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 341 transitions. [2024-11-12 08:03:09,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5074404761904762 [2024-11-12 08:03:09,663 INFO L175 Difference]: Start difference. First operand has 271 places, 215 transitions, 5398 flow. Second operand 28 states and 341 transitions. [2024-11-12 08:03:09,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 366 transitions, 8612 flow [2024-11-12 08:03:10,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 366 transitions, 7860 flow, removed 244 selfloop flow, removed 22 redundant places. [2024-11-12 08:03:10,419 INFO L231 Difference]: Finished difference. Result has 278 places, 217 transitions, 5432 flow [2024-11-12 08:03:10,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4888, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5432, PETRI_PLACES=278, PETRI_TRANSITIONS=217} [2024-11-12 08:03:10,420 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 252 predicate places. [2024-11-12 08:03:10,420 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 217 transitions, 5432 flow [2024-11-12 08:03:10,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:10,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:03:10,421 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:03:10,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-12 08:03:10,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:10,621 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:03:10,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:10,622 INFO L85 PathProgramCache]: Analyzing trace with hash -107109742, now seen corresponding path program 14 times [2024-11-12 08:03:10,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:10,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549408836] [2024-11-12 08:03:10,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:10,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:03:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:10,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549408836] [2024-11-12 08:03:10,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549408836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:03:10,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870371639] [2024-11-12 08:03:10,693 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:03:10,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:10,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:03:10,695 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) [2024-11-12 08:03:10,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 08:03:10,752 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:03:10,753 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:03:10,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 08:03:10,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:03:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:03:10,794 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:03:10,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870371639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:03:10,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:03:10,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-11-12 08:03:10,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138100317] [2024-11-12 08:03:10,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:03:10,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:03:10,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:10,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:03:10,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:03:10,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2024-11-12 08:03:10,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 217 transitions, 5432 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:10,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:10,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2024-11-12 08:03:10,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:12,237 INFO L124 PetriNetUnfolderBase]: 3094/6666 cut-off events. [2024-11-12 08:03:12,237 INFO L125 PetriNetUnfolderBase]: For 365611/366677 co-relation queries the response was YES. [2024-11-12 08:03:12,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39935 conditions, 6666 events. 3094/6666 cut-off events. For 365611/366677 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 53441 event pairs, 171 based on Foata normal form. 266/6320 useless extension candidates. Maximal degree in co-relation 39827. Up to 1324 conditions per place. [2024-11-12 08:03:12,283 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 235/235 dead transitions. [2024-11-12 08:03:12,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 235 transitions, 4711 flow [2024-11-12 08:03:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:03:12,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:03:12,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-11-12 08:03:12,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-11-12 08:03:12,284 INFO L175 Difference]: Start difference. First operand has 278 places, 217 transitions, 5432 flow. Second operand 8 states and 142 transitions. [2024-11-12 08:03:12,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 235 transitions, 4711 flow [2024-11-12 08:03:12,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 235 transitions, 3973 flow, removed 181 selfloop flow, removed 32 redundant places. [2024-11-12 08:03:12,720 INFO L231 Difference]: Finished difference. Result has 247 places, 0 transitions, 0 flow [2024-11-12 08:03:12,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=247, PETRI_TRANSITIONS=0} [2024-11-12 08:03:12,720 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 221 predicate places. [2024-11-12 08:03:12,721 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 0 transitions, 0 flow [2024-11-12 08:03:12,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:12,723 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-12 08:03:12,723 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-12 08:03:12,723 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-12 08:03:12,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-12 08:03:12,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-12 08:03:12,924 INFO L421 BasicCegarLoop]: Path program histogram: [14, 3, 2, 2, 1] [2024-11-12 08:03:12,928 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 08:03:12,928 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 08:03:12,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:03:12 BasicIcfg [2024-11-12 08:03:12,932 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 08:03:12,932 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 08:03:12,932 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 08:03:12,932 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 08:03:12,933 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:02:36" (3/4) ... [2024-11-12 08:03:12,935 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 08:03:12,938 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-11-12 08:03:12,939 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-11-12 08:03:12,942 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-11-12 08:03:12,942 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-12 08:03:12,942 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-12 08:03:12,943 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-12 08:03:13,018 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 08:03:13,018 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 08:03:13,019 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 08:03:13,019 INFO L158 Benchmark]: Toolchain (without parser) took 37200.42ms. Allocated memory was 174.1MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 122.4MB in the beginning and 6.5GB in the end (delta: -6.3GB). Peak memory consumption was 942.8MB. Max. memory is 16.1GB. [2024-11-12 08:03:13,019 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 140.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 08:03:13,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 540.53ms. Allocated memory is still 174.1MB. Free memory was 122.4MB in the beginning and 100.4MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-12 08:03:13,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.37ms. Allocated memory is still 174.1MB. Free memory was 100.4MB in the beginning and 98.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 08:03:13,020 INFO L158 Benchmark]: Boogie Preprocessor took 56.18ms. Allocated memory is still 174.1MB. Free memory was 98.7MB in the beginning and 96.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:03:13,020 INFO L158 Benchmark]: RCFGBuilder took 508.87ms. Allocated memory is still 174.1MB. Free memory was 96.6MB in the beginning and 78.8MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-12 08:03:13,021 INFO L158 Benchmark]: TraceAbstraction took 35945.67ms. Allocated memory was 174.1MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 78.1MB in the beginning and 6.5GB in the end (delta: -6.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-12 08:03:13,021 INFO L158 Benchmark]: Witness Printer took 86.68ms. Allocated memory is still 7.5GB. Free memory was 6.5GB in the beginning and 6.5GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 08:03:13,023 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 140.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 540.53ms. Allocated memory is still 174.1MB. Free memory was 122.4MB in the beginning and 100.4MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.37ms. Allocated memory is still 174.1MB. Free memory was 100.4MB in the beginning and 98.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.18ms. Allocated memory is still 174.1MB. Free memory was 98.7MB in the beginning and 96.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 508.87ms. Allocated memory is still 174.1MB. Free memory was 96.6MB in the beginning and 78.8MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 35945.67ms. Allocated memory was 174.1MB in the beginning and 7.5GB in the end (delta: 7.3GB). Free memory was 78.1MB in the beginning and 6.5GB in the end (delta: -6.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 86.68ms. Allocated memory is still 7.5GB. Free memory was 6.5GB in the beginning and 6.5GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 35.8s, OverallIterations: 22, TraceHistogramMax: 6, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 23.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4919 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4888 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 233 mSDsCounter, 323 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6764 IncrementalHoareTripleChecker+Invalid, 7087 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 323 mSolverCounterUnsat, 7 mSDtfsCounter, 6764 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1553 GetRequests, 944 SyntacticMatches, 53 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4111 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5432occurred in iteration=21, InterpolantAutomatonStates: 440, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 1164 NumberOfCodeBlocks, 1164 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 1612 ConstructedInterpolants, 0 QuantifiedInterpolants, 6857 SizeOfPredicates, 137 NumberOfNonLiveVariables, 1849 ConjunctsInSsa, 219 ConjunctsInUnsatCore, 53 InterpolantComputations, 7 PerfectInterpolantSequences, 113/1137 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 08:03:13,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE