./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:38:36,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:38:36,109 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:38:36,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:38:36,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:38:36,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:38:36,135 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:38:36,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:38:36,136 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:38:36,137 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:38:36,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:38:36,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:38:36,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:38:36,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:38:36,139 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:38:36,140 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:38:36,140 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:38:36,141 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:38:36,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:38:36,141 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:38:36,141 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:38:36,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:38:36,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:38:36,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:38:36,145 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:38:36,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:38:36,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:38:36,145 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:38:36,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:38:36,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:38:36,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:38:36,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:38:36,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:38:36,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:38:36,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:38:36,146 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:38:36,147 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:38:36,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:38:36,147 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:38:36,147 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:38:36,147 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:38:36,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:38:36,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f [2024-11-20 09:38:36,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:38:36,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:38:36,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:38:36,387 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:38:36,387 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:38:36,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-11-20 09:38:37,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:38:37,836 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:38:37,836 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-11-20 09:38:37,843 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ed87467/373ad9b8a9e44a249a84ea9fdef9addd/FLAGe6bd81fb9 [2024-11-20 09:38:37,857 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ed87467/373ad9b8a9e44a249a84ea9fdef9addd [2024-11-20 09:38:37,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:38:37,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:38:37,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:38:37,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:38:37,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:38:37,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:38:37" (1/1) ... [2024-11-20 09:38:37,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f634b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:37, skipping insertion in model container [2024-11-20 09:38:37,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:38:37" (1/1) ... [2024-11-20 09:38:37,887 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:38:38,053 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2421,2434] [2024-11-20 09:38:38,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:38:38,069 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:38:38,094 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2421,2434] [2024-11-20 09:38:38,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:38:38,116 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:38:38,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38 WrapperNode [2024-11-20 09:38:38,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:38:38,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:38:38,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:38:38,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:38:38,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,168 INFO L138 Inliner]: procedures = 19, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2024-11-20 09:38:38,169 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:38:38,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:38:38,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:38:38,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:38:38,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,186 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,204 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]. [2024-11-20 09:38:38,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,225 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:38:38,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:38:38,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:38:38,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:38:38,240 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (1/1) ... [2024-11-20 09:38:38,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:38:38,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:38,265 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) [2024-11-20 09:38:38,267 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 [2024-11-20 09:38:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:38:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:38:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:38:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:38:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:38:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:38:38,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:38:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:38:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:38:38,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:38:38,300 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:38:38,370 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:38:38,371 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:38:38,537 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:38:38,537 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:38:38,648 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:38:38,648 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-20 09:38:38,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:38:38 BoogieIcfgContainer [2024-11-20 09:38:38,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:38:38,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:38:38,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:38:38,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:38:38,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:38:37" (1/3) ... [2024-11-20 09:38:38,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19750497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:38:38, skipping insertion in model container [2024-11-20 09:38:38,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:38" (2/3) ... [2024-11-20 09:38:38,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19750497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:38:38, skipping insertion in model container [2024-11-20 09:38:38,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:38:38" (3/3) ... [2024-11-20 09:38:38,660 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-11-20 09:38:38,674 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:38:38,674 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:38:38,674 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:38:38,722 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 09:38:38,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 105 flow [2024-11-20 09:38:38,778 INFO L124 PetriNetUnfolderBase]: 6/39 cut-off events. [2024-11-20 09:38:38,778 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:38:38,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 6/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 88 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-20 09:38:38,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 42 transitions, 105 flow [2024-11-20 09:38:38,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 38 transitions, 94 flow [2024-11-20 09:38:38,791 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:38:38,798 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;@781ccd5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:38:38,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:38:38,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:38:38,808 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2024-11-20 09:38:38,808 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:38:38,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:38,809 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:38,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:38,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:38,813 INFO L85 PathProgramCache]: Analyzing trace with hash 122765952, now seen corresponding path program 1 times [2024-11-20 09:38:38,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:38,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224345086] [2024-11-20 09:38:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:38,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:39,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:39,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:39,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224345086] [2024-11-20 09:38:39,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224345086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:39,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:39,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:38:39,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323110900] [2024-11-20 09:38:39,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:39,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:38:39,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:38:39,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:38:39,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-20 09:38:39,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:39,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:39,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-20 09:38:39,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:39,341 INFO L124 PetriNetUnfolderBase]: 996/1607 cut-off events. [2024-11-20 09:38:39,341 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-20 09:38:39,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2944 conditions, 1607 events. 996/1607 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8018 event pairs, 94 based on Foata normal form. 1/1447 useless extension candidates. Maximal degree in co-relation 2669. Up to 1177 conditions per place. [2024-11-20 09:38:39,355 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 32 selfloop transitions, 7 changer transitions 1/55 dead transitions. [2024-11-20 09:38:39,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 223 flow [2024-11-20 09:38:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:38:39,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:38:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-20 09:38:39,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.753968253968254 [2024-11-20 09:38:39,367 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 94 flow. Second operand 3 states and 95 transitions. [2024-11-20 09:38:39,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 223 flow [2024-11-20 09:38:39,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 201 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 09:38:39,376 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 129 flow [2024-11-20 09:38:39,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=39, PETRI_TRANSITIONS=44} [2024-11-20 09:38:39,382 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2024-11-20 09:38:39,383 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 129 flow [2024-11-20 09:38:39,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:39,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:39,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:39,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:38:39,385 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:39,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:39,385 INFO L85 PathProgramCache]: Analyzing trace with hash -392611716, now seen corresponding path program 1 times [2024-11-20 09:38:39,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:39,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129986145] [2024-11-20 09:38:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:39,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:38:39,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:39,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129986145] [2024-11-20 09:38:39,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129986145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:39,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:39,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:38:39,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756549208] [2024-11-20 09:38:39,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:39,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:38:39,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:38:39,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:38:39,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 42 [2024-11-20 09:38:39,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:39,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:39,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 42 [2024-11-20 09:38:39,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:39,666 INFO L124 PetriNetUnfolderBase]: 891/1473 cut-off events. [2024-11-20 09:38:39,666 INFO L125 PetriNetUnfolderBase]: For 226/310 co-relation queries the response was YES. [2024-11-20 09:38:39,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 1473 events. 891/1473 cut-off events. For 226/310 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7905 event pairs, 153 based on Foata normal form. 47/1331 useless extension candidates. Maximal degree in co-relation 1791. Up to 595 conditions per place. [2024-11-20 09:38:39,676 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 31 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-11-20 09:38:39,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 225 flow [2024-11-20 09:38:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:38:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:38:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-20 09:38:39,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-11-20 09:38:39,678 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 129 flow. Second operand 3 states and 98 transitions. [2024-11-20 09:38:39,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 225 flow [2024-11-20 09:38:39,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 216 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 09:38:39,681 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 132 flow [2024-11-20 09:38:39,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2024-11-20 09:38:39,683 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2024-11-20 09:38:39,683 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 132 flow [2024-11-20 09:38:39,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:39,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:39,684 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:39,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:38:39,684 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:39,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:39,685 INFO L85 PathProgramCache]: Analyzing trace with hash 9928746, now seen corresponding path program 1 times [2024-11-20 09:38:39,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:39,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237433115] [2024-11-20 09:38:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:39,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:39,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:39,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237433115] [2024-11-20 09:38:39,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237433115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:39,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:39,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:38:39,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218768587] [2024-11-20 09:38:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:39,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:38:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:38:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:38:39,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 42 [2024-11-20 09:38:39,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:39,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:39,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 42 [2024-11-20 09:38:39,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:39,947 INFO L124 PetriNetUnfolderBase]: 930/1659 cut-off events. [2024-11-20 09:38:39,947 INFO L125 PetriNetUnfolderBase]: For 345/369 co-relation queries the response was YES. [2024-11-20 09:38:39,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 1659 events. 930/1659 cut-off events. For 345/369 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9856 event pairs, 148 based on Foata normal form. 57/1462 useless extension candidates. Maximal degree in co-relation 1763. Up to 652 conditions per place. [2024-11-20 09:38:39,959 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 32 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-20 09:38:39,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 237 flow [2024-11-20 09:38:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:38:39,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:38:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-20 09:38:39,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7698412698412699 [2024-11-20 09:38:39,961 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 132 flow. Second operand 3 states and 97 transitions. [2024-11-20 09:38:39,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 237 flow [2024-11-20 09:38:39,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:38:39,963 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 142 flow [2024-11-20 09:38:39,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2024-11-20 09:38:39,963 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-11-20 09:38:39,964 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 142 flow [2024-11-20 09:38:39,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:39,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:39,964 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:39,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:38:39,965 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:39,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash 16134528, now seen corresponding path program 1 times [2024-11-20 09:38:39,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:39,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723643540] [2024-11-20 09:38:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:39,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:40,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:40,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723643540] [2024-11-20 09:38:40,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723643540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:40,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:40,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:38:40,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116142472] [2024-11-20 09:38:40,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:40,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:38:40,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:40,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:38:40,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:38:40,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 42 [2024-11-20 09:38:40,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:40,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:40,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 42 [2024-11-20 09:38:40,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:40,226 INFO L124 PetriNetUnfolderBase]: 1150/1965 cut-off events. [2024-11-20 09:38:40,226 INFO L125 PetriNetUnfolderBase]: For 773/827 co-relation queries the response was YES. [2024-11-20 09:38:40,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4515 conditions, 1965 events. 1150/1965 cut-off events. For 773/827 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11434 event pairs, 264 based on Foata normal form. 72/1649 useless extension candidates. Maximal degree in co-relation 1636. Up to 683 conditions per place. [2024-11-20 09:38:40,239 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 33 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-20 09:38:40,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 255 flow [2024-11-20 09:38:40,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:38:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:38:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-20 09:38:40,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2024-11-20 09:38:40,242 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 142 flow. Second operand 3 states and 96 transitions. [2024-11-20 09:38:40,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 255 flow [2024-11-20 09:38:40,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:38:40,245 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 152 flow [2024-11-20 09:38:40,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2024-11-20 09:38:40,246 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-11-20 09:38:40,246 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 152 flow [2024-11-20 09:38:40,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:40,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:40,246 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:40,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:38:40,247 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:40,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:40,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1374564100, now seen corresponding path program 1 times [2024-11-20 09:38:40,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:40,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454520035] [2024-11-20 09:38:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:40,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:38:40,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:40,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454520035] [2024-11-20 09:38:40,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454520035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:40,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:40,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:38:40,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271305974] [2024-11-20 09:38:40,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:40,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:38:40,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:40,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:38:40,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:38:40,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 42 [2024-11-20 09:38:40,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:40,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:40,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 42 [2024-11-20 09:38:40,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:40,523 INFO L124 PetriNetUnfolderBase]: 1312/2142 cut-off events. [2024-11-20 09:38:40,523 INFO L125 PetriNetUnfolderBase]: For 1077/1131 co-relation queries the response was YES. [2024-11-20 09:38:40,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5225 conditions, 2142 events. 1312/2142 cut-off events. For 1077/1131 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12150 event pairs, 285 based on Foata normal form. 40/1860 useless extension candidates. Maximal degree in co-relation 1892. Up to 925 conditions per place. [2024-11-20 09:38:40,536 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 34 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-20 09:38:40,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 260 flow [2024-11-20 09:38:40,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:38:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:38:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-20 09:38:40,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2024-11-20 09:38:40,538 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 152 flow. Second operand 3 states and 94 transitions. [2024-11-20 09:38:40,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 260 flow [2024-11-20 09:38:40,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:38:40,540 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 154 flow [2024-11-20 09:38:40,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-11-20 09:38:40,541 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-11-20 09:38:40,541 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 154 flow [2024-11-20 09:38:40,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:40,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:40,541 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:40,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:38:40,541 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:40,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:40,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2068257726, now seen corresponding path program 1 times [2024-11-20 09:38:40,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:40,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023499374] [2024-11-20 09:38:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:40,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:38:40,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023499374] [2024-11-20 09:38:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023499374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:40,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:40,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:38:40,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450468008] [2024-11-20 09:38:40,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:40,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:38:40,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:40,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:38:40,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:38:40,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-11-20 09:38:40,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:40,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:40,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-11-20 09:38:40,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:40,967 INFO L124 PetriNetUnfolderBase]: 1995/3193 cut-off events. [2024-11-20 09:38:40,968 INFO L125 PetriNetUnfolderBase]: For 1751/2025 co-relation queries the response was YES. [2024-11-20 09:38:40,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8092 conditions, 3193 events. 1995/3193 cut-off events. For 1751/2025 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17408 event pairs, 516 based on Foata normal form. 101/2857 useless extension candidates. Maximal degree in co-relation 3124. Up to 1040 conditions per place. [2024-11-20 09:38:40,992 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 49 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2024-11-20 09:38:40,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 358 flow [2024-11-20 09:38:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:38:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:38:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-11-20 09:38:40,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2024-11-20 09:38:40,995 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 154 flow. Second operand 4 states and 128 transitions. [2024-11-20 09:38:40,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 358 flow [2024-11-20 09:38:40,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 09:38:40,999 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 182 flow [2024-11-20 09:38:41,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-11-20 09:38:41,000 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-11-20 09:38:41,001 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 182 flow [2024-11-20 09:38:41,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:41,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:41,001 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:41,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:38:41,002 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:41,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:41,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1785097993, now seen corresponding path program 1 times [2024-11-20 09:38:41,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:41,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420394325] [2024-11-20 09:38:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:41,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:38:41,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:41,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420394325] [2024-11-20 09:38:41,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420394325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:41,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:41,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:38:41,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702886212] [2024-11-20 09:38:41,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:41,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:38:41,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:41,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:38:41,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:38:41,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-11-20 09:38:41,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:41,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:41,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-11-20 09:38:41,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:41,628 INFO L124 PetriNetUnfolderBase]: 3325/5357 cut-off events. [2024-11-20 09:38:41,628 INFO L125 PetriNetUnfolderBase]: For 4628/4867 co-relation queries the response was YES. [2024-11-20 09:38:41,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14365 conditions, 5357 events. 3325/5357 cut-off events. For 4628/4867 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 34470 event pairs, 890 based on Foata normal form. 212/4975 useless extension candidates. Maximal degree in co-relation 7542. Up to 1618 conditions per place. [2024-11-20 09:38:41,658 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 55 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2024-11-20 09:38:41,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 444 flow [2024-11-20 09:38:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:38:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:38:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-11-20 09:38:41,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2024-11-20 09:38:41,659 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 182 flow. Second operand 4 states and 128 transitions. [2024-11-20 09:38:41,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 444 flow [2024-11-20 09:38:41,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 438 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-20 09:38:41,663 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 212 flow [2024-11-20 09:38:41,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-11-20 09:38:41,664 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-11-20 09:38:41,664 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 212 flow [2024-11-20 09:38:41,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:41,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:41,666 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:41,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 09:38:41,666 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:41,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:41,667 INFO L85 PathProgramCache]: Analyzing trace with hash 950982699, now seen corresponding path program 1 times [2024-11-20 09:38:41,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:41,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158886933] [2024-11-20 09:38:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:41,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 09:38:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:41,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158886933] [2024-11-20 09:38:41,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158886933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:41,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:41,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:38:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822860764] [2024-11-20 09:38:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:41,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:38:41,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:38:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:38:41,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 42 [2024-11-20 09:38:41,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:41,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:41,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 42 [2024-11-20 09:38:41,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:42,573 INFO L124 PetriNetUnfolderBase]: 5662/8775 cut-off events. [2024-11-20 09:38:42,573 INFO L125 PetriNetUnfolderBase]: For 14603/15485 co-relation queries the response was YES. [2024-11-20 09:38:42,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26826 conditions, 8775 events. 5662/8775 cut-off events. For 14603/15485 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 57732 event pairs, 1741 based on Foata normal form. 410/8002 useless extension candidates. Maximal degree in co-relation 15466. Up to 2671 conditions per place. [2024-11-20 09:38:42,643 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 59 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-11-20 09:38:42,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 524 flow [2024-11-20 09:38:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:38:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:38:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-20 09:38:42,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7440476190476191 [2024-11-20 09:38:42,644 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 212 flow. Second operand 4 states and 125 transitions. [2024-11-20 09:38:42,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 524 flow [2024-11-20 09:38:42,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 518 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-20 09:38:42,649 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 240 flow [2024-11-20 09:38:42,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-20 09:38:42,650 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-11-20 09:38:42,650 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 240 flow [2024-11-20 09:38:42,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:42,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:42,652 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:42,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 09:38:42,655 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:42,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:42,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1742463773, now seen corresponding path program 1 times [2024-11-20 09:38:42,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:42,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685657031] [2024-11-20 09:38:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:42,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:38:42,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685657031] [2024-11-20 09:38:42,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685657031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255165537] [2024-11-20 09:38:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:42,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:42,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:42,845 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) [2024-11-20 09:38:42,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:38:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:42,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 09:38:42,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:38:43,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:38:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:38:43,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255165537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:38:43,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:38:43,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-20 09:38:43,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544027022] [2024-11-20 09:38:43,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:38:43,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:38:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:38:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:38:43,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-20 09:38:43,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:43,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:43,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-20 09:38:43,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:45,035 INFO L124 PetriNetUnfolderBase]: 13709/22568 cut-off events. [2024-11-20 09:38:45,036 INFO L125 PetriNetUnfolderBase]: For 30411/32258 co-relation queries the response was YES. [2024-11-20 09:38:45,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69472 conditions, 22568 events. 13709/22568 cut-off events. For 30411/32258 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 162321 event pairs, 2553 based on Foata normal form. 878/23142 useless extension candidates. Maximal degree in co-relation 17508. Up to 8575 conditions per place. [2024-11-20 09:38:45,173 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 99 selfloop transitions, 22 changer transitions 1/140 dead transitions. [2024-11-20 09:38:45,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 140 transitions, 907 flow [2024-11-20 09:38:45,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:38:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:38:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-11-20 09:38:45,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8380952380952381 [2024-11-20 09:38:45,175 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 240 flow. Second operand 5 states and 176 transitions. [2024-11-20 09:38:45,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 140 transitions, 907 flow [2024-11-20 09:38:45,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 140 transitions, 899 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-20 09:38:45,182 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 381 flow [2024-11-20 09:38:45,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2024-11-20 09:38:45,183 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-11-20 09:38:45,183 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 381 flow [2024-11-20 09:38:45,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:45,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:45,184 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:45,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:38:45,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:45,385 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:45,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:45,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1192892357, now seen corresponding path program 2 times [2024-11-20 09:38:45,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:45,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116520849] [2024-11-20 09:38:45,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:45,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:38:45,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:45,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116520849] [2024-11-20 09:38:45,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116520849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:45,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566282432] [2024-11-20 09:38:45,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:38:45,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:45,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:45,523 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) [2024-11-20 09:38:45,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:38:45,593 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:38:45,593 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:38:45,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 09:38:45,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:38:45,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:38:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:38:45,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566282432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:38:45,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:38:45,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-20 09:38:45,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831830440] [2024-11-20 09:38:45,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:38:45,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:38:45,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:45,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:38:45,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:38:45,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-20 09:38:45,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:45,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:45,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-20 09:38:45,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:49,380 INFO L124 PetriNetUnfolderBase]: 25739/42364 cut-off events. [2024-11-20 09:38:49,380 INFO L125 PetriNetUnfolderBase]: For 76297/79952 co-relation queries the response was YES. [2024-11-20 09:38:49,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145325 conditions, 42364 events. 25739/42364 cut-off events. For 76297/79952 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 339415 event pairs, 3101 based on Foata normal form. 1759/43584 useless extension candidates. Maximal degree in co-relation 36540. Up to 14115 conditions per place. [2024-11-20 09:38:49,789 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 123 selfloop transitions, 46 changer transitions 1/188 dead transitions. [2024-11-20 09:38:49,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 188 transitions, 1337 flow [2024-11-20 09:38:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:38:49,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:38:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-11-20 09:38:49,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8531746031746031 [2024-11-20 09:38:49,791 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 381 flow. Second operand 6 states and 215 transitions. [2024-11-20 09:38:49,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 188 transitions, 1337 flow [2024-11-20 09:38:49,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 188 transitions, 1253 flow, removed 42 selfloop flow, removed 0 redundant places. [2024-11-20 09:38:49,818 INFO L231 Difference]: Finished difference. Result has 70 places, 95 transitions, 569 flow [2024-11-20 09:38:49,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=569, PETRI_PLACES=70, PETRI_TRANSITIONS=95} [2024-11-20 09:38:49,819 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2024-11-20 09:38:49,819 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 95 transitions, 569 flow [2024-11-20 09:38:49,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:49,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:49,819 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:49,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 09:38:50,020 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,SelfDestructingSolverStorable9 [2024-11-20 09:38:50,020 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:50,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:50,021 INFO L85 PathProgramCache]: Analyzing trace with hash -752760083, now seen corresponding path program 3 times [2024-11-20 09:38:50,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:50,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010492901] [2024-11-20 09:38:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:50,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:38:50,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:50,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010492901] [2024-11-20 09:38:50,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010492901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:50,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365293745] [2024-11-20 09:38:50,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:38:50,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:50,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:50,160 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) [2024-11-20 09:38:50,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:38:50,218 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-20 09:38:50,218 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:38:50,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 09:38:50,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:38:50,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:38:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:38:50,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365293745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:38:50,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:38:50,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-20 09:38:50,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727858065] [2024-11-20 09:38:50,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:38:50,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:38:50,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:50,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:38:50,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:38:50,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-20 09:38:50,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 569 flow. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:50,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:50,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-20 09:38:50,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:56,725 INFO L124 PetriNetUnfolderBase]: 41804/69035 cut-off events. [2024-11-20 09:38:56,725 INFO L125 PetriNetUnfolderBase]: For 132197/138032 co-relation queries the response was YES. [2024-11-20 09:38:56,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239811 conditions, 69035 events. 41804/69035 cut-off events. For 132197/138032 co-relation queries the response was YES. Maximal size of possible extension queue 2253. Compared 596814 event pairs, 4343 based on Foata normal form. 2876/70891 useless extension candidates. Maximal degree in co-relation 63722. Up to 20701 conditions per place. [2024-11-20 09:38:57,218 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 146 selfloop transitions, 76 changer transitions 1/241 dead transitions. [2024-11-20 09:38:57,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 241 transitions, 1790 flow [2024-11-20 09:38:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:38:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:38:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 254 transitions. [2024-11-20 09:38:57,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8639455782312925 [2024-11-20 09:38:57,221 INFO L175 Difference]: Start difference. First operand has 70 places, 95 transitions, 569 flow. Second operand 7 states and 254 transitions. [2024-11-20 09:38:57,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 241 transitions, 1790 flow [2024-11-20 09:38:57,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 241 transitions, 1683 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-11-20 09:38:57,275 INFO L231 Difference]: Finished difference. Result has 76 places, 125 transitions, 847 flow [2024-11-20 09:38:57,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=847, PETRI_PLACES=76, PETRI_TRANSITIONS=125} [2024-11-20 09:38:57,276 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-11-20 09:38:57,276 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 125 transitions, 847 flow [2024-11-20 09:38:57,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:57,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:57,276 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:57,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 09:38:57,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:57,481 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:57,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:57,481 INFO L85 PathProgramCache]: Analyzing trace with hash 178294997, now seen corresponding path program 4 times [2024-11-20 09:38:57,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:57,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576981770] [2024-11-20 09:38:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:57,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:38:57,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:57,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576981770] [2024-11-20 09:38:57,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576981770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:57,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524230079] [2024-11-20 09:38:57,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:38:57,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:57,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:57,627 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) [2024-11-20 09:38:57,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:38:57,680 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:38:57,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:38:57,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 09:38:57,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:38:57,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:38:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:38:57,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524230079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:38:57,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:38:57,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-20 09:38:57,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404914872] [2024-11-20 09:38:57,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:38:57,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:38:57,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:57,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:38:57,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:38:57,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-20 09:38:57,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 125 transitions, 847 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:57,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:57,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-20 09:38:57,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:39:06,056 INFO L124 PetriNetUnfolderBase]: 53502/87544 cut-off events. [2024-11-20 09:39:06,056 INFO L125 PetriNetUnfolderBase]: For 206513/213652 co-relation queries the response was YES. [2024-11-20 09:39:06,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320527 conditions, 87544 events. 53502/87544 cut-off events. For 206513/213652 co-relation queries the response was YES. Maximal size of possible extension queue 2791. Compared 776264 event pairs, 11037 based on Foata normal form. 3522/89229 useless extension candidates. Maximal degree in co-relation 95372. Up to 58694 conditions per place. [2024-11-20 09:39:06,921 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 185 selfloop transitions, 54 changer transitions 1/258 dead transitions. [2024-11-20 09:39:06,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 258 transitions, 2128 flow [2024-11-20 09:39:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:39:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:39:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-11-20 09:39:06,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8373015873015873 [2024-11-20 09:39:06,923 INFO L175 Difference]: Start difference. First operand has 76 places, 125 transitions, 847 flow. Second operand 6 states and 211 transitions. [2024-11-20 09:39:06,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 258 transitions, 2128 flow [2024-11-20 09:39:07,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 258 transitions, 2014 flow, removed 40 selfloop flow, removed 1 redundant places. [2024-11-20 09:39:07,061 INFO L231 Difference]: Finished difference. Result has 83 places, 175 transitions, 1352 flow [2024-11-20 09:39:07,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1352, PETRI_PLACES=83, PETRI_TRANSITIONS=175} [2024-11-20 09:39:07,062 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2024-11-20 09:39:07,063 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 175 transitions, 1352 flow [2024-11-20 09:39:07,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:39:07,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:39:07,063 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:39:07,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 09:39:07,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:07,264 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:39:07,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:39:07,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1125496137, now seen corresponding path program 5 times [2024-11-20 09:39:07,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:39:07,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622776122] [2024-11-20 09:39:07,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:39:07,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:39:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:39:07,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:39:07,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622776122] [2024-11-20 09:39:07,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622776122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:39:07,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597403235] [2024-11-20 09:39:07,632 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 09:39:07,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:07,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:39:07,634 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) [2024-11-20 09:39:07,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 09:39:07,694 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 09:39:07,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:39:07,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 09:39:07,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:39:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:39:07,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:39:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:39:07,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597403235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:39:07,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:39:07,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-20 09:39:07,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353352791] [2024-11-20 09:39:07,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:39:07,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:39:07,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:39:07,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:39:07,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:39:07,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-20 09:39:07,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 175 transitions, 1352 flow. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:39:07,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:39:07,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-20 09:39:07,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:39:19,200 INFO L124 PetriNetUnfolderBase]: 72127/118460 cut-off events. [2024-11-20 09:39:19,200 INFO L125 PetriNetUnfolderBase]: For 288310/298695 co-relation queries the response was YES. [2024-11-20 09:39:19,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433978 conditions, 118460 events. 72127/118460 cut-off events. For 288310/298695 co-relation queries the response was YES. Maximal size of possible extension queue 4201. Compared 1095738 event pairs, 6907 based on Foata normal form. 5053/121523 useless extension candidates. Maximal degree in co-relation 146593. Up to 23338 conditions per place. [2024-11-20 09:39:20,297 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 170 selfloop transitions, 162 changer transitions 1/351 dead transitions. [2024-11-20 09:39:20,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 351 transitions, 2954 flow [2024-11-20 09:39:20,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:39:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:39:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2024-11-20 09:39:20,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8720238095238095 [2024-11-20 09:39:20,299 INFO L175 Difference]: Start difference. First operand has 83 places, 175 transitions, 1352 flow. Second operand 8 states and 293 transitions. [2024-11-20 09:39:20,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 351 transitions, 2954 flow [2024-11-20 09:39:20,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 351 transitions, 2942 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-20 09:39:20,703 INFO L231 Difference]: Finished difference. Result has 91 places, 211 transitions, 1953 flow [2024-11-20 09:39:20,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1953, PETRI_PLACES=91, PETRI_TRANSITIONS=211} [2024-11-20 09:39:20,705 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 49 predicate places. [2024-11-20 09:39:20,705 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 211 transitions, 1953 flow [2024-11-20 09:39:20,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:39:20,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:39:20,706 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:39:20,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 09:39:20,906 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,SelfDestructingSolverStorable12 [2024-11-20 09:39:20,907 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:39:20,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:39:20,907 INFO L85 PathProgramCache]: Analyzing trace with hash -273154425, now seen corresponding path program 6 times [2024-11-20 09:39:20,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:39:20,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199061535] [2024-11-20 09:39:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:39:20,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:39:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 09:39:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:39:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199061535] [2024-11-20 09:39:21,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199061535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:39:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503213248] [2024-11-20 09:39:21,218 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 09:39:21,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:21,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:39:21,221 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) [2024-11-20 09:39:21,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 09:39:21,281 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-20 09:39:21,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:39:21,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 09:39:21,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:39:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:39:21,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:39:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 09:39:21,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503213248] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 09:39:21,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 09:39:21,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 9] total 15 [2024-11-20 09:39:21,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561610628] [2024-11-20 09:39:21,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:39:21,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:39:21,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:39:21,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:39:21,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-20 09:39:21,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 42 [2024-11-20 09:39:21,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 211 transitions, 1953 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:39:21,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:39:21,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 42 [2024-11-20 09:39:21,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand