./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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 ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.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 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:34:47,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:34:47,628 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:34:47,634 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:34:47,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:34:47,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:34:47,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:34:47,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:34:47,655 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:34:47,656 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:34:47,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:34:47,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:34:47,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:34:47,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:34:47,657 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:34:47,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:34:47,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:34:47,657 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:34:47,658 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:34:47,658 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:34:47,658 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:34:47,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:34:47,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:34:47,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:34:47,665 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:34:47,665 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:34:47,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:34:47,665 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:34:47,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:34:47,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:34:47,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:34:47,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:34:47,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:34:47,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:34:47,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:34:47,667 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:34:47,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:34:47,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:34:47,667 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:34:47,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:34:47,668 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:34:47,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:34:47,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:34:47,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2024-06-27 16:34:47,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:34:47,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:34:47,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:34:47,856 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:34:47,856 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:34:47,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2024-06-27 16:34:48,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:34:49,019 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:34:49,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2024-06-27 16:34:49,026 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e0239c7/f397b028210a409e9f63f0dd01c08c47/FLAGb4f6110ab [2024-06-27 16:34:49,035 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e0239c7/f397b028210a409e9f63f0dd01c08c47 [2024-06-27 16:34:49,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:34:49,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:34:49,039 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:34:49,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:34:49,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:34:49,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e65e790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49, skipping insertion in model container [2024-06-27 16:34:49,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,065 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:34:49,249 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-06-27 16:34:49,256 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:34:49,262 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:34:49,282 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-06-27 16:34:49,286 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:34:49,298 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:34:49,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49 WrapperNode [2024-06-27 16:34:49,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:34:49,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:34:49,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:34:49,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:34:49,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,336 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 304 [2024-06-27 16:34:49,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:34:49,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:34:49,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:34:49,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:34:49,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,349 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,361 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-06-27 16:34:49,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:34:49,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:34:49,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:34:49,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:34:49,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (1/1) ... [2024-06-27 16:34:49,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:34:49,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:34:49,438 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) [2024-06-27 16:34:49,455 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 [2024-06-27 16:34:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:34:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:34:49,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:34:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:34:49,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:34:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:34:49,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:34:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:34:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:34:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 16:34:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 16:34:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 16:34:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:34:49,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:34:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 16:34:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 16:34:49,503 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:34:49,584 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:34:49,585 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:34:49,914 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:34:49,914 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:34:50,183 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:34:50,183 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-27 16:34:50,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:34:50 BoogieIcfgContainer [2024-06-27 16:34:50,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:34:50,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:34:50,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:34:50,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:34:50,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:34:49" (1/3) ... [2024-06-27 16:34:50,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0adc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:34:50, skipping insertion in model container [2024-06-27 16:34:50,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:34:49" (2/3) ... [2024-06-27 16:34:50,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0adc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:34:50, skipping insertion in model container [2024-06-27 16:34:50,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:34:50" (3/3) ... [2024-06-27 16:34:50,192 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2024-06-27 16:34:50,199 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:34:50,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:34:50,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:34:50,207 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:34:50,267 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:34:50,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 93 flow [2024-06-27 16:34:50,336 INFO L124 PetriNetUnfolderBase]: 7/33 cut-off events. [2024-06-27 16:34:50,338 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:34:50,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 7/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-06-27 16:34:50,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 93 flow [2024-06-27 16:34:50,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 82 flow [2024-06-27 16:34:50,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:34:50,366 INFO L357 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, mHoare=true, 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;@40e6c203, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:34:50,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:34:50,382 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:34:50,382 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2024-06-27 16:34:50,382 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:34:50,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:50,383 INFO L208 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] [2024-06-27 16:34:50,383 INFO L420 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)] === [2024-06-27 16:34:50,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:50,387 INFO L85 PathProgramCache]: Analyzing trace with hash -447705035, now seen corresponding path program 1 times [2024-06-27 16:34:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:50,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729787577] [2024-06-27 16:34:50,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:50,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:34:50,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:50,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729787577] [2024-06-27 16:34:50,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729787577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:50,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:50,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:34:50,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982365523] [2024-06-27 16:34:50,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:50,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-06-27 16:34:50,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:50,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-06-27 16:34:50,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-06-27 16:34:50,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:34:50,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:50,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:50,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:34:50,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:50,872 INFO L124 PetriNetUnfolderBase]: 792/1137 cut-off events. [2024-06-27 16:34:50,873 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-06-27 16:34:50,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 1137 events. 792/1137 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3703 event pairs, 608 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 2150. Up to 1137 conditions per place. [2024-06-27 16:34:50,883 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 28 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2024-06-27 16:34:50,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 132 flow [2024-06-27 16:34:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-06-27 16:34:50,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-06-27 16:34:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2024-06-27 16:34:50,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 16:34:50,894 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 82 flow. Second operand 2 states and 39 transitions. [2024-06-27 16:34:50,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 132 flow [2024-06-27 16:34:50,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 16:34:50,898 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 64 flow [2024-06-27 16:34:50,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2024-06-27 16:34:50,902 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2024-06-27 16:34:50,902 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 64 flow [2024-06-27 16:34:50,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:50,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:50,903 INFO L208 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] [2024-06-27 16:34:50,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:34:50,903 INFO L420 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)] === [2024-06-27 16:34:50,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1234612696, now seen corresponding path program 1 times [2024-06-27 16:34:50,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:50,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079361909] [2024-06-27 16:34:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:50,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:34:51,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:51,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079361909] [2024-06-27 16:34:51,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079361909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:51,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:51,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:34:51,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669100276] [2024-06-27 16:34:51,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:51,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:34:51,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:51,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:34:51,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:34:51,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:34:51,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:51,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:51,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:34:51,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:51,194 INFO L124 PetriNetUnfolderBase]: 792/1138 cut-off events. [2024-06-27 16:34:51,195 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-06-27 16:34:51,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1138 events. 792/1138 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3700 event pairs, 608 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 2306. Up to 1137 conditions per place. [2024-06-27 16:34:51,199 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-06-27 16:34:51,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 124 flow [2024-06-27 16:34:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:34:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:34:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-06-27 16:34:51,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 16:34:51,202 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 64 flow. Second operand 3 states and 42 transitions. [2024-06-27 16:34:51,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 124 flow [2024-06-27 16:34:51,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:34:51,206 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 76 flow [2024-06-27 16:34:51,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2024-06-27 16:34:51,207 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2024-06-27 16:34:51,207 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 76 flow [2024-06-27 16:34:51,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:51,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:51,208 INFO L208 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] [2024-06-27 16:34:51,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:34:51,208 INFO L420 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)] === [2024-06-27 16:34:51,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:51,209 INFO L85 PathProgramCache]: Analyzing trace with hash 321585607, now seen corresponding path program 1 times [2024-06-27 16:34:51,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:51,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638627776] [2024-06-27 16:34:51,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:51,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:34:51,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:51,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638627776] [2024-06-27 16:34:51,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638627776] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:34:51,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952011582] [2024-06-27 16:34:51,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:51,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:51,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:34:51,345 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) [2024-06-27 16:34:51,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:34:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:51,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-27 16:34:51,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:34:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:34:51,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:34:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:34:51,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952011582] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:34:51,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:34:51,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-06-27 16:34:51,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682127494] [2024-06-27 16:34:51,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:34:51,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:34:51,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:51,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:34:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:34:51,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:34:51,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:51,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:51,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:34:51,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:51,688 INFO L124 PetriNetUnfolderBase]: 792/1140 cut-off events. [2024-06-27 16:34:51,689 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-06-27 16:34:51,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 1140 events. 792/1140 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3700 event pairs, 608 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 2317. Up to 1137 conditions per place. [2024-06-27 16:34:51,693 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-06-27 16:34:51,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 146 flow [2024-06-27 16:34:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:34:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:34:51,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2024-06-27 16:34:51,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2024-06-27 16:34:51,697 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 76 flow. Second operand 5 states and 53 transitions. [2024-06-27 16:34:51,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 146 flow [2024-06-27 16:34:51,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 16:34:51,699 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 98 flow [2024-06-27 16:34:51,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-06-27 16:34:51,701 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-06-27 16:34:51,701 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 98 flow [2024-06-27 16:34:51,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:51,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:51,702 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:34:51,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 16:34:51,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:34:51,905 INFO L420 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)] === [2024-06-27 16:34:51,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:51,905 INFO L85 PathProgramCache]: Analyzing trace with hash 836812775, now seen corresponding path program 2 times [2024-06-27 16:34:51,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:51,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631127391] [2024-06-27 16:34:51,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:51,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:34:52,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:52,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631127391] [2024-06-27 16:34:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631127391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:52,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:52,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:34:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888326901] [2024-06-27 16:34:52,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:52,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:34:52,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:34:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:34:52,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:34:52,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:52,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:52,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:34:52,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:53,444 INFO L124 PetriNetUnfolderBase]: 2140/3125 cut-off events. [2024-06-27 16:34:53,444 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-06-27 16:34:53,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6341 conditions, 3125 events. 2140/3125 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14134 event pairs, 608 based on Foata normal form. 1/2589 useless extension candidates. Maximal degree in co-relation 6334. Up to 1188 conditions per place. [2024-06-27 16:34:53,454 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 96 selfloop transitions, 13 changer transitions 2/112 dead transitions. [2024-06-27 16:34:53,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 112 transitions, 499 flow [2024-06-27 16:34:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:34:53,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:34:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-27 16:34:53,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5436507936507936 [2024-06-27 16:34:53,457 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 98 flow. Second operand 7 states and 137 transitions. [2024-06-27 16:34:53,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 112 transitions, 499 flow [2024-06-27 16:34:53,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 112 transitions, 489 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 16:34:53,461 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 183 flow [2024-06-27 16:34:53,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-06-27 16:34:53,462 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2024-06-27 16:34:53,463 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 183 flow [2024-06-27 16:34:53,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:53,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:53,463 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:34:53,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:34:53,464 INFO L420 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)] === [2024-06-27 16:34:53,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2145649563, now seen corresponding path program 3 times [2024-06-27 16:34:53,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:53,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879135106] [2024-06-27 16:34:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:53,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:34:53,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:53,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879135106] [2024-06-27 16:34:53,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879135106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:53,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:53,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:34:53,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942242823] [2024-06-27 16:34:53,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:53,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:34:53,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:34:53,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:34:53,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:34:53,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:53,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:53,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:34:53,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:54,649 INFO L124 PetriNetUnfolderBase]: 4722/6948 cut-off events. [2024-06-27 16:34:54,650 INFO L125 PetriNetUnfolderBase]: For 3031/3031 co-relation queries the response was YES. [2024-06-27 16:34:54,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17616 conditions, 6948 events. 4722/6948 cut-off events. For 3031/3031 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 36106 event pairs, 1348 based on Foata normal form. 4/6952 useless extension candidates. Maximal degree in co-relation 17603. Up to 2519 conditions per place. [2024-06-27 16:34:54,677 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 87 selfloop transitions, 20 changer transitions 15/123 dead transitions. [2024-06-27 16:34:54,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 123 transitions, 705 flow [2024-06-27 16:34:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:34:54,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:34:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 16:34:54,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-06-27 16:34:54,679 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 183 flow. Second operand 6 states and 115 transitions. [2024-06-27 16:34:54,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 123 transitions, 705 flow [2024-06-27 16:34:54,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 123 transitions, 705 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:34:54,700 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 319 flow [2024-06-27 16:34:54,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-06-27 16:34:54,701 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2024-06-27 16:34:54,701 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 319 flow [2024-06-27 16:34:54,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:54,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:54,702 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:34:54,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:34:54,702 INFO L420 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)] === [2024-06-27 16:34:54,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:54,703 INFO L85 PathProgramCache]: Analyzing trace with hash 194676001, now seen corresponding path program 4 times [2024-06-27 16:34:54,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:54,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775510704] [2024-06-27 16:34:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:54,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:34:54,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:54,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775510704] [2024-06-27 16:34:54,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775510704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:54,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:54,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:34:54,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548100734] [2024-06-27 16:34:54,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:54,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:34:54,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:54,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:34:54,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:34:54,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:34:54,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:54,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:54,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:34:54,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:56,170 INFO L124 PetriNetUnfolderBase]: 7067/10338 cut-off events. [2024-06-27 16:34:56,171 INFO L125 PetriNetUnfolderBase]: For 12024/12024 co-relation queries the response was YES. [2024-06-27 16:34:56,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30605 conditions, 10338 events. 7067/10338 cut-off events. For 12024/12024 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 56002 event pairs, 2936 based on Foata normal form. 4/10342 useless extension candidates. Maximal degree in co-relation 30587. Up to 4784 conditions per place. [2024-06-27 16:34:56,227 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 109 selfloop transitions, 16 changer transitions 14/140 dead transitions. [2024-06-27 16:34:56,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 140 transitions, 1010 flow [2024-06-27 16:34:56,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:34:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:34:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-27 16:34:56,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 16:34:56,229 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 319 flow. Second operand 6 states and 105 transitions. [2024-06-27 16:34:56,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 140 transitions, 1010 flow [2024-06-27 16:34:56,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 140 transitions, 1006 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 16:34:56,250 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 455 flow [2024-06-27 16:34:56,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-06-27 16:34:56,252 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-06-27 16:34:56,252 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 455 flow [2024-06-27 16:34:56,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:56,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:56,253 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:34:56,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:34:56,256 INFO L420 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)] === [2024-06-27 16:34:56,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:56,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1109558291, now seen corresponding path program 5 times [2024-06-27 16:34:56,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:56,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974068124] [2024-06-27 16:34:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:56,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:34:56,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:56,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974068124] [2024-06-27 16:34:56,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974068124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:56,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:56,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:34:56,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024901054] [2024-06-27 16:34:56,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:56,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:34:56,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:56,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:34:56,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:34:56,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:34:56,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 455 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:56,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:56,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:34:56,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:58,045 INFO L124 PetriNetUnfolderBase]: 7070/10381 cut-off events. [2024-06-27 16:34:58,045 INFO L125 PetriNetUnfolderBase]: For 22879/22879 co-relation queries the response was YES. [2024-06-27 16:34:58,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34161 conditions, 10381 events. 7070/10381 cut-off events. For 22879/22879 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 57919 event pairs, 2439 based on Foata normal form. 1/10382 useless extension candidates. Maximal degree in co-relation 34139. Up to 4721 conditions per place. [2024-06-27 16:34:58,105 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 119 selfloop transitions, 28 changer transitions 3/151 dead transitions. [2024-06-27 16:34:58,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 151 transitions, 1233 flow [2024-06-27 16:34:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:34:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:34:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 16:34:58,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-06-27 16:34:58,106 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 455 flow. Second operand 7 states and 130 transitions. [2024-06-27 16:34:58,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 151 transitions, 1233 flow [2024-06-27 16:34:58,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 151 transitions, 1204 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 16:34:58,136 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 629 flow [2024-06-27 16:34:58,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=629, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-06-27 16:34:58,137 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2024-06-27 16:34:58,137 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 629 flow [2024-06-27 16:34:58,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:58,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:58,138 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:34:58,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:34:58,138 INFO L420 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)] === [2024-06-27 16:34:58,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1522170939, now seen corresponding path program 6 times [2024-06-27 16:34:58,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:58,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915006663] [2024-06-27 16:34:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:58,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:34:58,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:58,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915006663] [2024-06-27 16:34:58,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915006663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:58,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:58,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:34:58,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984966806] [2024-06-27 16:34:58,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:58,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:34:58,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:58,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:34:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:34:58,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:34:58,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 629 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:58,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:58,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:34:58,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:59,787 INFO L124 PetriNetUnfolderBase]: 7356/10870 cut-off events. [2024-06-27 16:34:59,795 INFO L125 PetriNetUnfolderBase]: For 33856/33856 co-relation queries the response was YES. [2024-06-27 16:34:59,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38914 conditions, 10870 events. 7356/10870 cut-off events. For 33856/33856 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 62302 event pairs, 2682 based on Foata normal form. 1/10871 useless extension candidates. Maximal degree in co-relation 38888. Up to 4351 conditions per place. [2024-06-27 16:34:59,862 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 135 selfloop transitions, 25 changer transitions 3/164 dead transitions. [2024-06-27 16:34:59,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 164 transitions, 1551 flow [2024-06-27 16:34:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:34:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:34:59,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 16:34:59,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-06-27 16:34:59,865 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 629 flow. Second operand 7 states and 127 transitions. [2024-06-27 16:34:59,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 164 transitions, 1551 flow [2024-06-27 16:34:59,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 164 transitions, 1502 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 16:34:59,910 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 859 flow [2024-06-27 16:34:59,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=859, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-27 16:34:59,913 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 47 predicate places. [2024-06-27 16:34:59,913 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 859 flow [2024-06-27 16:34:59,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:34:59,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:59,913 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:34:59,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 16:34:59,914 INFO L420 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)] === [2024-06-27 16:34:59,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:59,914 INFO L85 PathProgramCache]: Analyzing trace with hash 283442431, now seen corresponding path program 7 times [2024-06-27 16:34:59,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:59,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451055243] [2024-06-27 16:34:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:59,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:00,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:00,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451055243] [2024-06-27 16:35:00,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451055243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:00,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:00,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:35:00,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881396925] [2024-06-27 16:35:00,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:00,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:35:00,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:00,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:35:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:35:00,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:00,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:00,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:00,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:00,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:01,372 INFO L124 PetriNetUnfolderBase]: 7366/10930 cut-off events. [2024-06-27 16:35:01,373 INFO L125 PetriNetUnfolderBase]: For 48559/48559 co-relation queries the response was YES. [2024-06-27 16:35:01,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42295 conditions, 10930 events. 7366/10930 cut-off events. For 48559/48559 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 61496 event pairs, 2808 based on Foata normal form. 5/10935 useless extension candidates. Maximal degree in co-relation 42264. Up to 4877 conditions per place. [2024-06-27 16:35:01,451 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 112 selfloop transitions, 40 changer transitions 15/168 dead transitions. [2024-06-27 16:35:01,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 168 transitions, 1752 flow [2024-06-27 16:35:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:35:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:35:01,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-27 16:35:01,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 16:35:01,453 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 859 flow. Second operand 6 states and 110 transitions. [2024-06-27 16:35:01,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 168 transitions, 1752 flow [2024-06-27 16:35:01,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 168 transitions, 1709 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 16:35:01,546 INFO L231 Difference]: Finished difference. Result has 90 places, 98 transitions, 1140 flow [2024-06-27 16:35:01,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1140, PETRI_PLACES=90, PETRI_TRANSITIONS=98} [2024-06-27 16:35:01,548 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 55 predicate places. [2024-06-27 16:35:01,548 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 98 transitions, 1140 flow [2024-06-27 16:35:01,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:01,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:01,549 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:01,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 16:35:01,549 INFO L420 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)] === [2024-06-27 16:35:01,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1919790835, now seen corresponding path program 8 times [2024-06-27 16:35:01,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:01,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200042461] [2024-06-27 16:35:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:01,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:01,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:01,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200042461] [2024-06-27 16:35:01,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200042461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:01,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:01,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:35:01,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346982331] [2024-06-27 16:35:01,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:01,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:35:01,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:01,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:35:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:35:01,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:01,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 98 transitions, 1140 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:01,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:01,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:01,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:03,218 INFO L124 PetriNetUnfolderBase]: 7312/10824 cut-off events. [2024-06-27 16:35:03,219 INFO L125 PetriNetUnfolderBase]: For 61063/61063 co-relation queries the response was YES. [2024-06-27 16:35:03,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44155 conditions, 10824 events. 7312/10824 cut-off events. For 61063/61063 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 62220 event pairs, 2628 based on Foata normal form. 1/10825 useless extension candidates. Maximal degree in co-relation 44120. Up to 4339 conditions per place. [2024-06-27 16:35:03,285 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 164 selfloop transitions, 25 changer transitions 3/193 dead transitions. [2024-06-27 16:35:03,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 193 transitions, 2356 flow [2024-06-27 16:35:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:35:03,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:35:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 16:35:03,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-27 16:35:03,286 INFO L175 Difference]: Start difference. First operand has 90 places, 98 transitions, 1140 flow. Second operand 7 states and 128 transitions. [2024-06-27 16:35:03,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 193 transitions, 2356 flow [2024-06-27 16:35:03,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 193 transitions, 2202 flow, removed 58 selfloop flow, removed 2 redundant places. [2024-06-27 16:35:03,422 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 1383 flow [2024-06-27 16:35:03,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1383, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-06-27 16:35:03,423 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 62 predicate places. [2024-06-27 16:35:03,423 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 1383 flow [2024-06-27 16:35:03,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:03,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:03,423 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:03,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 16:35:03,424 INFO L420 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)] === [2024-06-27 16:35:03,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:03,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1212925769, now seen corresponding path program 9 times [2024-06-27 16:35:03,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:03,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700674634] [2024-06-27 16:35:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:03,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:03,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:03,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700674634] [2024-06-27 16:35:03,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700674634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:03,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:03,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:35:03,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582776255] [2024-06-27 16:35:03,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:03,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:35:03,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:03,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:35:03,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:35:03,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:03,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 1383 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:03,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:03,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:03,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:04,871 INFO L124 PetriNetUnfolderBase]: 7312/10816 cut-off events. [2024-06-27 16:35:04,872 INFO L125 PetriNetUnfolderBase]: For 64645/64645 co-relation queries the response was YES. [2024-06-27 16:35:04,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44348 conditions, 10816 events. 7312/10816 cut-off events. For 64645/64645 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 61168 event pairs, 2763 based on Foata normal form. 4/10820 useless extension candidates. Maximal degree in co-relation 44310. Up to 4684 conditions per place. [2024-06-27 16:35:04,919 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 104 selfloop transitions, 60 changer transitions 16/181 dead transitions. [2024-06-27 16:35:04,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 181 transitions, 2245 flow [2024-06-27 16:35:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:35:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:35:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-27 16:35:04,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-27 16:35:04,920 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 1383 flow. Second operand 6 states and 109 transitions. [2024-06-27 16:35:04,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 181 transitions, 2245 flow [2024-06-27 16:35:05,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 181 transitions, 2188 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 16:35:05,030 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 1691 flow [2024-06-27 16:35:05,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1691, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2024-06-27 16:35:05,031 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 69 predicate places. [2024-06-27 16:35:05,031 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 1691 flow [2024-06-27 16:35:05,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:05,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:05,031 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:05,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 16:35:05,031 INFO L420 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)] === [2024-06-27 16:35:05,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:05,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1207144633, now seen corresponding path program 10 times [2024-06-27 16:35:05,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:05,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152080262] [2024-06-27 16:35:05,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:05,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:05,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:05,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152080262] [2024-06-27 16:35:05,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152080262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:05,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:05,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:35:05,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725552085] [2024-06-27 16:35:05,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:05,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:35:05,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:05,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:35:05,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:35:05,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:05,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 1691 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:05,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:05,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:05,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:06,357 INFO L124 PetriNetUnfolderBase]: 7255/10690 cut-off events. [2024-06-27 16:35:06,358 INFO L125 PetriNetUnfolderBase]: For 77142/77142 co-relation queries the response was YES. [2024-06-27 16:35:06,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46220 conditions, 10690 events. 7255/10690 cut-off events. For 77142/77142 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 60020 event pairs, 2551 based on Foata normal form. 7/10697 useless extension candidates. Maximal degree in co-relation 46178. Up to 4630 conditions per place. [2024-06-27 16:35:06,432 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 102 selfloop transitions, 66 changer transitions 18/187 dead transitions. [2024-06-27 16:35:06,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 187 transitions, 2522 flow [2024-06-27 16:35:06,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:35:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:35:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-27 16:35:06,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 16:35:06,433 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 1691 flow. Second operand 6 states and 110 transitions. [2024-06-27 16:35:06,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 187 transitions, 2522 flow [2024-06-27 16:35:06,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 187 transitions, 2447 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 16:35:06,615 INFO L231 Difference]: Finished difference. Result has 109 places, 123 transitions, 1883 flow [2024-06-27 16:35:06,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1883, PETRI_PLACES=109, PETRI_TRANSITIONS=123} [2024-06-27 16:35:06,616 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 74 predicate places. [2024-06-27 16:35:06,616 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 123 transitions, 1883 flow [2024-06-27 16:35:06,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:06,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:06,616 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:06,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 16:35:06,617 INFO L420 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)] === [2024-06-27 16:35:06,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash 976585551, now seen corresponding path program 11 times [2024-06-27 16:35:06,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:06,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176885492] [2024-06-27 16:35:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:06,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:06,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176885492] [2024-06-27 16:35:06,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176885492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:06,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:06,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:35:06,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118677415] [2024-06-27 16:35:06,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:06,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:35:06,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:35:06,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:35:06,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:06,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 123 transitions, 1883 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:06,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:06,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:06,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:07,972 INFO L124 PetriNetUnfolderBase]: 7208/10578 cut-off events. [2024-06-27 16:35:07,972 INFO L125 PetriNetUnfolderBase]: For 84426/84426 co-relation queries the response was YES. [2024-06-27 16:35:08,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46588 conditions, 10578 events. 7208/10578 cut-off events. For 84426/84426 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 58160 event pairs, 2720 based on Foata normal form. 5/10583 useless extension candidates. Maximal degree in co-relation 46544. Up to 4877 conditions per place. [2024-06-27 16:35:08,037 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 125 selfloop transitions, 57 changer transitions 18/201 dead transitions. [2024-06-27 16:35:08,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 201 transitions, 2909 flow [2024-06-27 16:35:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:35:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:35:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-27 16:35:08,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 16:35:08,044 INFO L175 Difference]: Start difference. First operand has 109 places, 123 transitions, 1883 flow. Second operand 6 states and 108 transitions. [2024-06-27 16:35:08,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 201 transitions, 2909 flow [2024-06-27 16:35:08,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 201 transitions, 2764 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 16:35:08,265 INFO L231 Difference]: Finished difference. Result has 113 places, 131 transitions, 2074 flow [2024-06-27 16:35:08,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2074, PETRI_PLACES=113, PETRI_TRANSITIONS=131} [2024-06-27 16:35:08,265 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 78 predicate places. [2024-06-27 16:35:08,265 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 131 transitions, 2074 flow [2024-06-27 16:35:08,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:08,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:08,266 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:08,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 16:35:08,266 INFO L420 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)] === [2024-06-27 16:35:08,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:08,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1580537744, now seen corresponding path program 1 times [2024-06-27 16:35:08,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:08,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573578836] [2024-06-27 16:35:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:08,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:08,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:08,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573578836] [2024-06-27 16:35:08,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573578836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:08,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:08,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:35:08,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287632154] [2024-06-27 16:35:08,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:08,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:35:08,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:08,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:35:08,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:35:08,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:08,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 131 transitions, 2074 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:08,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:08,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:08,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:09,803 INFO L124 PetriNetUnfolderBase]: 8091/11821 cut-off events. [2024-06-27 16:35:09,803 INFO L125 PetriNetUnfolderBase]: For 85322/85322 co-relation queries the response was YES. [2024-06-27 16:35:09,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50060 conditions, 11821 events. 8091/11821 cut-off events. For 85322/85322 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 66745 event pairs, 1725 based on Foata normal form. 13/11834 useless extension candidates. Maximal degree in co-relation 50014. Up to 6536 conditions per place. [2024-06-27 16:35:09,871 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 155 selfloop transitions, 57 changer transitions 1/214 dead transitions. [2024-06-27 16:35:09,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 214 transitions, 2976 flow [2024-06-27 16:35:09,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:35:09,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:35:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 16:35:09,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317460317460317 [2024-06-27 16:35:09,873 INFO L175 Difference]: Start difference. First operand has 113 places, 131 transitions, 2074 flow. Second operand 7 states and 134 transitions. [2024-06-27 16:35:09,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 214 transitions, 2976 flow [2024-06-27 16:35:10,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 214 transitions, 2827 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 16:35:10,064 INFO L231 Difference]: Finished difference. Result has 118 places, 136 transitions, 2194 flow [2024-06-27 16:35:10,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2194, PETRI_PLACES=118, PETRI_TRANSITIONS=136} [2024-06-27 16:35:10,064 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 83 predicate places. [2024-06-27 16:35:10,064 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 136 transitions, 2194 flow [2024-06-27 16:35:10,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:10,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:10,065 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:10,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 16:35:10,065 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:10,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:10,066 INFO L85 PathProgramCache]: Analyzing trace with hash 15090204, now seen corresponding path program 1 times [2024-06-27 16:35:10,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:10,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071663820] [2024-06-27 16:35:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:10,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:10,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:10,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071663820] [2024-06-27 16:35:10,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071663820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:10,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:10,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 16:35:10,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127345550] [2024-06-27 16:35:10,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:10,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:35:10,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:10,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:35:10,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:35:10,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:10,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 136 transitions, 2194 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:10,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:10,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:10,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:12,617 INFO L124 PetriNetUnfolderBase]: 11771/17161 cut-off events. [2024-06-27 16:35:12,617 INFO L125 PetriNetUnfolderBase]: For 129148/129148 co-relation queries the response was YES. [2024-06-27 16:35:12,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71849 conditions, 17161 events. 11771/17161 cut-off events. For 129148/129148 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 102728 event pairs, 3177 based on Foata normal form. 8/17169 useless extension candidates. Maximal degree in co-relation 71801. Up to 5932 conditions per place. [2024-06-27 16:35:12,765 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 227 selfloop transitions, 53 changer transitions 1/282 dead transitions. [2024-06-27 16:35:12,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 282 transitions, 4317 flow [2024-06-27 16:35:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:35:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:35:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-27 16:35:12,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-06-27 16:35:12,767 INFO L175 Difference]: Start difference. First operand has 118 places, 136 transitions, 2194 flow. Second operand 7 states and 142 transitions. [2024-06-27 16:35:12,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 282 transitions, 4317 flow [2024-06-27 16:35:13,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 282 transitions, 4187 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 16:35:13,116 INFO L231 Difference]: Finished difference. Result has 127 places, 162 transitions, 2705 flow [2024-06-27 16:35:13,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2113, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2705, PETRI_PLACES=127, PETRI_TRANSITIONS=162} [2024-06-27 16:35:13,117 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 92 predicate places. [2024-06-27 16:35:13,117 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 162 transitions, 2705 flow [2024-06-27 16:35:13,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:13,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:13,118 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:13,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 16:35:13,118 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:13,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:13,119 INFO L85 PathProgramCache]: Analyzing trace with hash 613927612, now seen corresponding path program 2 times [2024-06-27 16:35:13,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:13,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265056783] [2024-06-27 16:35:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:13,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:13,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:13,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265056783] [2024-06-27 16:35:13,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265056783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:13,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:13,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 16:35:13,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949872053] [2024-06-27 16:35:13,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:13,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:35:13,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:13,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:35:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-27 16:35:13,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:13,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 162 transitions, 2705 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:13,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:13,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:13,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:16,187 INFO L124 PetriNetUnfolderBase]: 13860/20258 cut-off events. [2024-06-27 16:35:16,187 INFO L125 PetriNetUnfolderBase]: For 155163/155163 co-relation queries the response was YES. [2024-06-27 16:35:16,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86920 conditions, 20258 events. 13860/20258 cut-off events. For 155163/155163 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 124829 event pairs, 4155 based on Foata normal form. 13/20271 useless extension candidates. Maximal degree in co-relation 86867. Up to 8023 conditions per place. [2024-06-27 16:35:16,324 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 217 selfloop transitions, 59 changer transitions 1/278 dead transitions. [2024-06-27 16:35:16,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 278 transitions, 4242 flow [2024-06-27 16:35:16,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:35:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:35:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-27 16:35:16,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2024-06-27 16:35:16,325 INFO L175 Difference]: Start difference. First operand has 127 places, 162 transitions, 2705 flow. Second operand 7 states and 146 transitions. [2024-06-27 16:35:16,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 278 transitions, 4242 flow [2024-06-27 16:35:16,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 278 transitions, 4188 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-27 16:35:16,736 INFO L231 Difference]: Finished difference. Result has 135 places, 168 transitions, 2914 flow [2024-06-27 16:35:16,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2914, PETRI_PLACES=135, PETRI_TRANSITIONS=168} [2024-06-27 16:35:16,736 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 100 predicate places. [2024-06-27 16:35:16,736 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 168 transitions, 2914 flow [2024-06-27 16:35:16,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:16,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:16,737 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:16,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 16:35:16,737 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:16,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash -586131088, now seen corresponding path program 2 times [2024-06-27 16:35:16,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:16,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241067614] [2024-06-27 16:35:16,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:16,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:16,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:16,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241067614] [2024-06-27 16:35:16,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241067614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:16,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:16,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 16:35:16,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234486593] [2024-06-27 16:35:16,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:16,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:35:16,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:35:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:35:16,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:16,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 168 transitions, 2914 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:16,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:16,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:16,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:19,894 INFO L124 PetriNetUnfolderBase]: 15896/23214 cut-off events. [2024-06-27 16:35:19,894 INFO L125 PetriNetUnfolderBase]: For 191170/191170 co-relation queries the response was YES. [2024-06-27 16:35:20,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99618 conditions, 23214 events. 15896/23214 cut-off events. For 191170/191170 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 143626 event pairs, 3235 based on Foata normal form. 12/23226 useless extension candidates. Maximal degree in co-relation 99562. Up to 9838 conditions per place. [2024-06-27 16:35:20,082 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 238 selfloop transitions, 54 changer transitions 1/294 dead transitions. [2024-06-27 16:35:20,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 294 transitions, 4692 flow [2024-06-27 16:35:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:35:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:35:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 16:35:20,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-06-27 16:35:20,083 INFO L175 Difference]: Start difference. First operand has 135 places, 168 transitions, 2914 flow. Second operand 7 states and 136 transitions. [2024-06-27 16:35:20,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 294 transitions, 4692 flow [2024-06-27 16:35:20,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 294 transitions, 4537 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-27 16:35:20,731 INFO L231 Difference]: Finished difference. Result has 143 places, 182 transitions, 3251 flow [2024-06-27 16:35:20,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2823, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3251, PETRI_PLACES=143, PETRI_TRANSITIONS=182} [2024-06-27 16:35:20,732 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 108 predicate places. [2024-06-27 16:35:20,732 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 182 transitions, 3251 flow [2024-06-27 16:35:20,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:20,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:20,732 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:20,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 16:35:20,733 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:20,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:20,733 INFO L85 PathProgramCache]: Analyzing trace with hash 391438696, now seen corresponding path program 3 times [2024-06-27 16:35:20,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:20,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147342466] [2024-06-27 16:35:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:20,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:20,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147342466] [2024-06-27 16:35:20,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147342466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:20,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:20,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 16:35:20,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707035286] [2024-06-27 16:35:20,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:20,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:35:20,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:20,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:35:20,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:35:20,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:20,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 182 transitions, 3251 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:20,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:20,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:20,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:24,547 INFO L124 PetriNetUnfolderBase]: 16328/23852 cut-off events. [2024-06-27 16:35:24,548 INFO L125 PetriNetUnfolderBase]: For 214889/214889 co-relation queries the response was YES. [2024-06-27 16:35:24,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103312 conditions, 23852 events. 16328/23852 cut-off events. For 214889/214889 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 149783 event pairs, 4855 based on Foata normal form. 8/23860 useless extension candidates. Maximal degree in co-relation 103252. Up to 9555 conditions per place. [2024-06-27 16:35:24,707 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 213 selfloop transitions, 78 changer transitions 1/293 dead transitions. [2024-06-27 16:35:24,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 293 transitions, 4823 flow [2024-06-27 16:35:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:35:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:35:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-27 16:35:24,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 16:35:24,709 INFO L175 Difference]: Start difference. First operand has 143 places, 182 transitions, 3251 flow. Second operand 7 states and 147 transitions. [2024-06-27 16:35:24,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 293 transitions, 4823 flow [2024-06-27 16:35:25,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 293 transitions, 4722 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 16:35:25,380 INFO L231 Difference]: Finished difference. Result has 150 places, 189 transitions, 3519 flow [2024-06-27 16:35:25,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3178, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3519, PETRI_PLACES=150, PETRI_TRANSITIONS=189} [2024-06-27 16:35:25,381 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 115 predicate places. [2024-06-27 16:35:25,381 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 189 transitions, 3519 flow [2024-06-27 16:35:25,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:25,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:25,382 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:25,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 16:35:25,382 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:25,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:25,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1494868392, now seen corresponding path program 3 times [2024-06-27 16:35:25,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:25,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471106188] [2024-06-27 16:35:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:25,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:25,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:25,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471106188] [2024-06-27 16:35:25,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471106188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:25,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:25,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 16:35:25,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449939034] [2024-06-27 16:35:25,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:25,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:35:25,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:35:25,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:35:25,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:25,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 189 transitions, 3519 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:25,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:25,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:25,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:29,573 INFO L124 PetriNetUnfolderBase]: 19220/28076 cut-off events. [2024-06-27 16:35:29,573 INFO L125 PetriNetUnfolderBase]: For 270229/270229 co-relation queries the response was YES. [2024-06-27 16:35:29,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123321 conditions, 28076 events. 19220/28076 cut-off events. For 270229/270229 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 177742 event pairs, 2855 based on Foata normal form. 12/28088 useless extension candidates. Maximal degree in co-relation 123258. Up to 13311 conditions per place. [2024-06-27 16:35:29,806 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 295 selfloop transitions, 64 changer transitions 1/361 dead transitions. [2024-06-27 16:35:29,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 361 transitions, 6586 flow [2024-06-27 16:35:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:35:29,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:35:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-27 16:35:29,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 16:35:29,808 INFO L175 Difference]: Start difference. First operand has 150 places, 189 transitions, 3519 flow. Second operand 7 states and 135 transitions. [2024-06-27 16:35:29,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 361 transitions, 6586 flow [2024-06-27 16:35:30,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 361 transitions, 6368 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 16:35:30,858 INFO L231 Difference]: Finished difference. Result has 158 places, 228 transitions, 4393 flow [2024-06-27 16:35:30,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3380, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4393, PETRI_PLACES=158, PETRI_TRANSITIONS=228} [2024-06-27 16:35:30,858 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 123 predicate places. [2024-06-27 16:35:30,859 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 228 transitions, 4393 flow [2024-06-27 16:35:30,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:30,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:30,859 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:30,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 16:35:30,859 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:30,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:30,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1075770402, now seen corresponding path program 4 times [2024-06-27 16:35:30,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:30,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035777935] [2024-06-27 16:35:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:30,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:31,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:31,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035777935] [2024-06-27 16:35:31,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035777935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:31,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:31,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 16:35:31,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139466378] [2024-06-27 16:35:31,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:31,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:35:31,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:31,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:35:31,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:35:31,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:31,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 228 transitions, 4393 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:31,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:31,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:31,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:35,534 INFO L124 PetriNetUnfolderBase]: 19199/28039 cut-off events. [2024-06-27 16:35:35,534 INFO L125 PetriNetUnfolderBase]: For 287582/287582 co-relation queries the response was YES. [2024-06-27 16:35:35,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126408 conditions, 28039 events. 19199/28039 cut-off events. For 287582/287582 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 178602 event pairs, 5771 based on Foata normal form. 13/28052 useless extension candidates. Maximal degree in co-relation 126340. Up to 11087 conditions per place. [2024-06-27 16:35:35,771 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 218 selfloop transitions, 109 changer transitions 1/329 dead transitions. [2024-06-27 16:35:35,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 329 transitions, 5850 flow [2024-06-27 16:35:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:35:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:35:35,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-27 16:35:35,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 16:35:35,773 INFO L175 Difference]: Start difference. First operand has 158 places, 228 transitions, 4393 flow. Second operand 7 states and 147 transitions. [2024-06-27 16:35:35,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 329 transitions, 5850 flow [2024-06-27 16:35:36,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 329 transitions, 5814 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-06-27 16:35:36,870 INFO L231 Difference]: Finished difference. Result has 166 places, 230 transitions, 4632 flow [2024-06-27 16:35:36,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4632, PETRI_PLACES=166, PETRI_TRANSITIONS=230} [2024-06-27 16:35:36,870 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 131 predicate places. [2024-06-27 16:35:36,871 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 230 transitions, 4632 flow [2024-06-27 16:35:36,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:36,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:35:36,872 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-06-27 16:35:36,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 16:35:36,873 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:35:36,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:35:36,873 INFO L85 PathProgramCache]: Analyzing trace with hash 850115986, now seen corresponding path program 4 times [2024-06-27 16:35:36,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:35:36,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600738149] [2024-06-27 16:35:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:35:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:35:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:35:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-27 16:35:37,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:35:37,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600738149] [2024-06-27 16:35:37,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600738149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:35:37,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:35:37,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 16:35:37,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453010051] [2024-06-27 16:35:37,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:35:37,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:35:37,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:35:37,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:35:37,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:35:37,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-06-27 16:35:37,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 230 transitions, 4632 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:35:37,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:35:37,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-06-27 16:35:37,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:35:41,821 INFO L124 PetriNetUnfolderBase]: 19795/28951 cut-off events. [2024-06-27 16:35:41,821 INFO L125 PetriNetUnfolderBase]: For 322074/322074 co-relation queries the response was YES. [2024-06-27 16:35:41,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133011 conditions, 28951 events. 19795/28951 cut-off events. For 322074/322074 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 185748 event pairs, 6981 based on Foata normal form. 12/28963 useless extension candidates. Maximal degree in co-relation 132940. Up to 16448 conditions per place.