./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:13:56,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:13:56,832 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:13:56,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:13:56,840 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:13:56,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:13:56,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:13:56,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:13:56,867 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:13:56,869 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:13:56,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:13:56,870 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:13:56,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:13:56,870 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:13:56,870 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:13:56,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:13:56,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:13:56,871 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:13:56,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:13:56,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:13:56,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:13:56,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:13:56,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:13:56,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:13:56,873 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:13:56,873 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:13:56,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:13:56,874 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:13:56,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:13:56,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:13:56,874 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:13:56,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:13:56,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:13:56,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:13:56,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:13:56,876 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:13:56,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:13:56,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:13:56,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:13:56,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:13:56,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:13:56,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:13:56,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-10-13 07:13:57,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:13:57,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:13:57,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:13:57,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:13:57,089 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:13:57,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-13 07:13:58,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:13:58,522 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:13:58,524 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-10-13 07:13:58,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/276e05880/0fa53c3a532d4fcd89b75726fd526254/FLAG5e0fec3c5 [2024-10-13 07:13:58,546 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/276e05880/0fa53c3a532d4fcd89b75726fd526254 [2024-10-13 07:13:58,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:13:58,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:13:58,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:13:58,557 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:13:58,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:13:58,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23dc6edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58, skipping insertion in model container [2024-10-13 07:13:58,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,589 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:13:58,758 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2896,2909] [2024-10-13 07:13:58,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:13:58,779 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:13:58,801 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2896,2909] [2024-10-13 07:13:58,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:13:58,820 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:13:58,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58 WrapperNode [2024-10-13 07:13:58,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:13:58,822 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:13:58,822 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:13:58,822 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:13:58,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,835 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,855 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 159 [2024-10-13 07:13:58,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:13:58,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:13:58,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:13:58,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:13:58,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,883 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]. [2024-10-13 07:13:58,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,895 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:13:58,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:13:58,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:13:58,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:13:58,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (1/1) ... [2024-10-13 07:13:58,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:13:58,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:13:58,928 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) [2024-10-13 07:13:58,930 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 [2024-10-13 07:13:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:13:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:13:58,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:13:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:13:58,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:13:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:13:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 07:13:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 07:13:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 07:13:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:13:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:13:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 07:13:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:13:58,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:13:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 07:13:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 07:13:58,967 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:13:59,055 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:13:59,058 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:13:59,266 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:13:59,266 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:13:59,457 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:13:59,458 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 07:13:59,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:59 BoogieIcfgContainer [2024-10-13 07:13:59,458 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:13:59,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:13:59,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:13:59,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:13:59,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:13:58" (1/3) ... [2024-10-13 07:13:59,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680614c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:59, skipping insertion in model container [2024-10-13 07:13:59,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:58" (2/3) ... [2024-10-13 07:13:59,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680614c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:59, skipping insertion in model container [2024-10-13 07:13:59,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:59" (3/3) ... [2024-10-13 07:13:59,472 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-10-13 07:13:59,505 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:13:59,506 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:13:59,506 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:13:59,539 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 07:13:59,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2024-10-13 07:13:59,588 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-10-13 07:13:59,589 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:13:59,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-10-13 07:13:59,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2024-10-13 07:13:59,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2024-10-13 07:13:59,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:13:59,608 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@bf9d15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:13:59,609 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-13 07:13:59,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:13:59,620 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-10-13 07:13:59,621 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:13:59,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:13:59,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:13:59,622 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:13:59,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:13:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2097850719, now seen corresponding path program 1 times [2024-10-13 07:13:59,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:13:59,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022932525] [2024-10-13 07:13:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:13:59,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:13:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:13:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:13:59,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:13:59,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022932525] [2024-10-13 07:13:59,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022932525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:13:59,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:13:59,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:13:59,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320677319] [2024-10-13 07:13:59,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:13:59,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 07:13:59,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:13:59,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 07:13:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 07:13:59,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-13 07:13:59,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:13:59,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:13:59,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-13 07:13:59,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:13:59,923 INFO L124 PetriNetUnfolderBase]: 108/208 cut-off events. [2024-10-13 07:13:59,923 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-13 07:13:59,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 208 events. 108/208 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 678 event pairs, 83 based on Foata normal form. 13/202 useless extension candidates. Maximal degree in co-relation 366. Up to 178 conditions per place. [2024-10-13 07:13:59,927 INFO L140 encePairwiseOnDemand]: 28/29 looper letters, 20 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2024-10-13 07:13:59,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 102 flow [2024-10-13 07:13:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 07:13:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 07:13:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2024-10-13 07:13:59,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.603448275862069 [2024-10-13 07:13:59,936 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 2 states and 35 transitions. [2024-10-13 07:13:59,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 102 flow [2024-10-13 07:13:59,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 07:13:59,939 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 54 flow [2024-10-13 07:13:59,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2024-10-13 07:13:59,942 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2024-10-13 07:13:59,943 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 54 flow [2024-10-13 07:13:59,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:13:59,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:13:59,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:13:59,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:13:59,943 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:13:59,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:13:59,944 INFO L85 PathProgramCache]: Analyzing trace with hash 702721458, now seen corresponding path program 1 times [2024-10-13 07:13:59,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:13:59,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18406641] [2024-10-13 07:13:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:13:59,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:13:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:00,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:00,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18406641] [2024-10-13 07:14:00,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18406641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:00,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:00,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:14:00,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288618030] [2024-10-13 07:14:00,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:00,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:14:00,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:14:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:14:00,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-13 07:14:00,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:00,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:00,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-13 07:14:00,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:00,158 INFO L124 PetriNetUnfolderBase]: 116/226 cut-off events. [2024-10-13 07:14:00,159 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:14:00,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 226 events. 116/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 702 event pairs, 34 based on Foata normal form. 3/216 useless extension candidates. Maximal degree in co-relation 427. Up to 159 conditions per place. [2024-10-13 07:14:00,162 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 24 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-10-13 07:14:00,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 32 transitions, 123 flow [2024-10-13 07:14:00,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:14:00,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:14:00,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-10-13 07:14:00,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-10-13 07:14:00,164 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 54 flow. Second operand 3 states and 49 transitions. [2024-10-13 07:14:00,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 32 transitions, 123 flow [2024-10-13 07:14:00,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 123 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:14:00,167 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 73 flow [2024-10-13 07:14:00,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2024-10-13 07:14:00,168 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2024-10-13 07:14:00,168 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 73 flow [2024-10-13 07:14:00,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:00,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:00,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:00,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:14:00,168 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:00,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1414017828, now seen corresponding path program 2 times [2024-10-13 07:14:00,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:00,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283361063] [2024-10-13 07:14:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:00,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:00,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:00,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283361063] [2024-10-13 07:14:00,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283361063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:00,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:00,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:14:00,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244564004] [2024-10-13 07:14:00,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:00,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:14:00,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:00,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:14:00,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:14:00,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-13 07:14:00,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:00,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:00,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-13 07:14:00,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:00,440 INFO L124 PetriNetUnfolderBase]: 129/267 cut-off events. [2024-10-13 07:14:00,441 INFO L125 PetriNetUnfolderBase]: For 47/49 co-relation queries the response was YES. [2024-10-13 07:14:00,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 267 events. 129/267 cut-off events. For 47/49 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 934 event pairs, 93 based on Foata normal form. 11/264 useless extension candidates. Maximal degree in co-relation 565. Up to 193 conditions per place. [2024-10-13 07:14:00,445 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 21 selfloop transitions, 2 changer transitions 8/36 dead transitions. [2024-10-13 07:14:00,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 155 flow [2024-10-13 07:14:00,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:14:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:14:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-10-13 07:14:00,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2024-10-13 07:14:00,447 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 73 flow. Second operand 4 states and 59 transitions. [2024-10-13 07:14:00,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 155 flow [2024-10-13 07:14:00,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:14:00,448 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 86 flow [2024-10-13 07:14:00,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-10-13 07:14:00,449 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-10-13 07:14:00,449 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 86 flow [2024-10-13 07:14:00,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:00,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:00,450 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:00,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:14:00,450 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:00,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:00,452 INFO L85 PathProgramCache]: Analyzing trace with hash 453692084, now seen corresponding path program 1 times [2024-10-13 07:14:00,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:00,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504641400] [2024-10-13 07:14:00,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:00,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:00,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:00,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504641400] [2024-10-13 07:14:00,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504641400] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:00,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:00,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:14:00,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209499930] [2024-10-13 07:14:00,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:00,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:14:00,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:14:00,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:14:00,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 07:14:00,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 86 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:00,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:00,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 07:14:00,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:01,110 INFO L124 PetriNetUnfolderBase]: 171/334 cut-off events. [2024-10-13 07:14:01,110 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-10-13 07:14:01,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 334 events. 171/334 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1255 event pairs, 10 based on Foata normal form. 1/334 useless extension candidates. Maximal degree in co-relation 727. Up to 199 conditions per place. [2024-10-13 07:14:01,112 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 42 selfloop transitions, 13 changer transitions 5/64 dead transitions. [2024-10-13 07:14:01,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 64 transitions, 299 flow [2024-10-13 07:14:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:14:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:14:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-10-13 07:14:01,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-10-13 07:14:01,114 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 86 flow. Second operand 10 states and 120 transitions. [2024-10-13 07:14:01,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 64 transitions, 299 flow [2024-10-13 07:14:01,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 64 transitions, 289 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-13 07:14:01,116 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 152 flow [2024-10-13 07:14:01,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=152, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-10-13 07:14:01,116 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-10-13 07:14:01,117 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 152 flow [2024-10-13 07:14:01,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:01,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:01,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:01,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:14:01,117 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:01,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:01,117 INFO L85 PathProgramCache]: Analyzing trace with hash -563805100, now seen corresponding path program 2 times [2024-10-13 07:14:01,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:01,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387986259] [2024-10-13 07:14:01,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:01,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:01,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:01,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387986259] [2024-10-13 07:14:01,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387986259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:01,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:01,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:14:01,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225294444] [2024-10-13 07:14:01,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:01,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:14:01,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:01,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:14:01,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:14:01,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 07:14:01,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 152 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:01,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:01,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 07:14:01,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:01,637 INFO L124 PetriNetUnfolderBase]: 193/388 cut-off events. [2024-10-13 07:14:01,639 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-10-13 07:14:01,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 388 events. 193/388 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1629 event pairs, 24 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1051. Up to 226 conditions per place. [2024-10-13 07:14:01,641 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 44 selfloop transitions, 20 changer transitions 5/73 dead transitions. [2024-10-13 07:14:01,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 73 transitions, 428 flow [2024-10-13 07:14:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:14:01,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:14:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-10-13 07:14:01,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4241379310344828 [2024-10-13 07:14:01,644 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 152 flow. Second operand 10 states and 123 transitions. [2024-10-13 07:14:01,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 73 transitions, 428 flow [2024-10-13 07:14:01,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 419 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-13 07:14:01,648 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 274 flow [2024-10-13 07:14:01,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=274, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-10-13 07:14:01,649 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-10-13 07:14:01,650 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 274 flow [2024-10-13 07:14:01,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:01,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:01,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:01,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 07:14:01,651 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:01,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:01,653 INFO L85 PathProgramCache]: Analyzing trace with hash 783150618, now seen corresponding path program 3 times [2024-10-13 07:14:01,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:01,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985603262] [2024-10-13 07:14:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:01,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:01,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:01,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985603262] [2024-10-13 07:14:01,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985603262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:01,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:01,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:14:01,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771460272] [2024-10-13 07:14:01,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:01,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:14:01,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:14:01,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:14:02,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 07:14:02,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 274 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:02,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:02,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 07:14:02,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:02,167 INFO L124 PetriNetUnfolderBase]: 205/428 cut-off events. [2024-10-13 07:14:02,167 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2024-10-13 07:14:02,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 428 events. 205/428 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1932 event pairs, 9 based on Foata normal form. 1/429 useless extension candidates. Maximal degree in co-relation 1349. Up to 213 conditions per place. [2024-10-13 07:14:02,170 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 48 selfloop transitions, 26 changer transitions 5/83 dead transitions. [2024-10-13 07:14:02,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 569 flow [2024-10-13 07:14:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:14:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:14:02,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-10-13 07:14:02,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4169278996865204 [2024-10-13 07:14:02,172 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 274 flow. Second operand 11 states and 133 transitions. [2024-10-13 07:14:02,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 569 flow [2024-10-13 07:14:02,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 546 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-13 07:14:02,176 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 349 flow [2024-10-13 07:14:02,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=349, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-10-13 07:14:02,177 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2024-10-13 07:14:02,177 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 349 flow [2024-10-13 07:14:02,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:02,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:02,177 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:02,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:14:02,177 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:02,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:02,178 INFO L85 PathProgramCache]: Analyzing trace with hash -496111328, now seen corresponding path program 4 times [2024-10-13 07:14:02,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:02,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89468674] [2024-10-13 07:14:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:02,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:02,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:02,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89468674] [2024-10-13 07:14:02,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89468674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:02,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:02,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:14:02,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189538493] [2024-10-13 07:14:02,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:02,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:14:02,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:14:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:14:02,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 07:14:02,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 349 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:02,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:02,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 07:14:02,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:02,685 INFO L124 PetriNetUnfolderBase]: 204/435 cut-off events. [2024-10-13 07:14:02,685 INFO L125 PetriNetUnfolderBase]: For 953/953 co-relation queries the response was YES. [2024-10-13 07:14:02,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1507 conditions, 435 events. 204/435 cut-off events. For 953/953 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2017 event pairs, 32 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 1489. Up to 263 conditions per place. [2024-10-13 07:14:02,688 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 49 selfloop transitions, 22 changer transitions 5/80 dead transitions. [2024-10-13 07:14:02,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 80 transitions, 633 flow [2024-10-13 07:14:02,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:14:02,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:14:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-10-13 07:14:02,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4206896551724138 [2024-10-13 07:14:02,690 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 349 flow. Second operand 10 states and 122 transitions. [2024-10-13 07:14:02,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 80 transitions, 633 flow [2024-10-13 07:14:02,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 572 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-10-13 07:14:02,694 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 390 flow [2024-10-13 07:14:02,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-10-13 07:14:02,696 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-10-13 07:14:02,696 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 390 flow [2024-10-13 07:14:02,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:02,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:02,697 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:02,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:14:02,697 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:02,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:02,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1358592218, now seen corresponding path program 5 times [2024-10-13 07:14:02,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:02,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894661846] [2024-10-13 07:14:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:02,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:03,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:03,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894661846] [2024-10-13 07:14:03,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894661846] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:03,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:03,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:14:03,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256589796] [2024-10-13 07:14:03,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:03,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:14:03,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:03,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:14:03,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:14:03,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 07:14:03,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 390 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:03,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:03,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 07:14:03,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:03,197 INFO L124 PetriNetUnfolderBase]: 216/469 cut-off events. [2024-10-13 07:14:03,197 INFO L125 PetriNetUnfolderBase]: For 972/972 co-relation queries the response was YES. [2024-10-13 07:14:03,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 469 events. 216/469 cut-off events. For 972/972 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2240 event pairs, 22 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 1622. Up to 282 conditions per place. [2024-10-13 07:14:03,200 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 54 selfloop transitions, 23 changer transitions 5/86 dead transitions. [2024-10-13 07:14:03,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 679 flow [2024-10-13 07:14:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:14:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:14:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-10-13 07:14:03,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42758620689655175 [2024-10-13 07:14:03,201 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 390 flow. Second operand 10 states and 124 transitions. [2024-10-13 07:14:03,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 679 flow [2024-10-13 07:14:03,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 636 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-13 07:14:03,204 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 434 flow [2024-10-13 07:14:03,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=434, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-10-13 07:14:03,205 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-10-13 07:14:03,205 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 434 flow [2024-10-13 07:14:03,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:03,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:03,205 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:03,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 07:14:03,205 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:03,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash 75713766, now seen corresponding path program 6 times [2024-10-13 07:14:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:03,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651873295] [2024-10-13 07:14:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:03,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:03,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:03,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651873295] [2024-10-13 07:14:03,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651873295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:03,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:03,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:14:03,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863485465] [2024-10-13 07:14:03,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:03,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:14:03,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:03,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:14:03,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:14:03,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 07:14:03,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 434 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:03,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:03,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 07:14:03,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:03,586 INFO L124 PetriNetUnfolderBase]: 212/456 cut-off events. [2024-10-13 07:14:03,586 INFO L125 PetriNetUnfolderBase]: For 1524/1532 co-relation queries the response was YES. [2024-10-13 07:14:03,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1717 conditions, 456 events. 212/456 cut-off events. For 1524/1532 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2153 event pairs, 22 based on Foata normal form. 9/465 useless extension candidates. Maximal degree in co-relation 1695. Up to 286 conditions per place. [2024-10-13 07:14:03,589 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 48 selfloop transitions, 22 changer transitions 8/82 dead transitions. [2024-10-13 07:14:03,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 82 transitions, 693 flow [2024-10-13 07:14:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:14:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:14:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-10-13 07:14:03,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2024-10-13 07:14:03,590 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 434 flow. Second operand 10 states and 119 transitions. [2024-10-13 07:14:03,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 82 transitions, 693 flow [2024-10-13 07:14:03,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 636 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-10-13 07:14:03,595 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 430 flow [2024-10-13 07:14:03,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=430, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2024-10-13 07:14:03,595 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-10-13 07:14:03,596 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 430 flow [2024-10-13 07:14:03,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:03,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:03,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:03,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 07:14:03,596 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:03,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1376393114, now seen corresponding path program 7 times [2024-10-13 07:14:03,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:03,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244827561] [2024-10-13 07:14:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:03,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:03,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:03,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244827561] [2024-10-13 07:14:03,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244827561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:03,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:03,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:14:03,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354129744] [2024-10-13 07:14:03,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:03,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:14:03,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:03,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:14:03,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:14:03,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 07:14:03,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 430 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:03,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:03,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 07:14:03,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:04,065 INFO L124 PetriNetUnfolderBase]: 221/483 cut-off events. [2024-10-13 07:14:04,066 INFO L125 PetriNetUnfolderBase]: For 1664/1676 co-relation queries the response was YES. [2024-10-13 07:14:04,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 483 events. 221/483 cut-off events. For 1664/1676 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2353 event pairs, 33 based on Foata normal form. 3/486 useless extension candidates. Maximal degree in co-relation 1792. Up to 292 conditions per place. [2024-10-13 07:14:04,069 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 57 selfloop transitions, 23 changer transitions 5/89 dead transitions. [2024-10-13 07:14:04,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 89 transitions, 768 flow [2024-10-13 07:14:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:14:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:14:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-10-13 07:14:04,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43448275862068964 [2024-10-13 07:14:04,070 INFO L175 Difference]: Start difference. First operand has 77 places, 59 transitions, 430 flow. Second operand 10 states and 126 transitions. [2024-10-13 07:14:04,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 89 transitions, 768 flow [2024-10-13 07:14:04,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 89 transitions, 714 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-10-13 07:14:04,075 INFO L231 Difference]: Finished difference. Result has 79 places, 62 transitions, 473 flow [2024-10-13 07:14:04,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=473, PETRI_PLACES=79, PETRI_TRANSITIONS=62} [2024-10-13 07:14:04,076 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-10-13 07:14:04,076 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 62 transitions, 473 flow [2024-10-13 07:14:04,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:04,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:04,078 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:04,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 07:14:04,078 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:04,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:04,078 INFO L85 PathProgramCache]: Analyzing trace with hash -553579926, now seen corresponding path program 8 times [2024-10-13 07:14:04,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:04,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781941439] [2024-10-13 07:14:04,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:04,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:04,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781941439] [2024-10-13 07:14:04,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781941439] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:04,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:04,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:14:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218092537] [2024-10-13 07:14:04,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:04,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:14:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:04,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:14:04,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:14:04,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 07:14:04,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 473 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:04,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:04,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 07:14:04,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:04,511 INFO L124 PetriNetUnfolderBase]: 217/470 cut-off events. [2024-10-13 07:14:04,511 INFO L125 PetriNetUnfolderBase]: For 2286/2306 co-relation queries the response was YES. [2024-10-13 07:14:04,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 470 events. 217/470 cut-off events. For 2286/2306 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2274 event pairs, 33 based on Foata normal form. 11/481 useless extension candidates. Maximal degree in co-relation 1856. Up to 296 conditions per place. [2024-10-13 07:14:04,514 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 51 selfloop transitions, 22 changer transitions 8/85 dead transitions. [2024-10-13 07:14:04,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 773 flow [2024-10-13 07:14:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:14:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:14:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-10-13 07:14:04,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-10-13 07:14:04,515 INFO L175 Difference]: Start difference. First operand has 79 places, 62 transitions, 473 flow. Second operand 10 states and 121 transitions. [2024-10-13 07:14:04,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 773 flow [2024-10-13 07:14:04,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 706 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-10-13 07:14:04,520 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 461 flow [2024-10-13 07:14:04,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=461, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2024-10-13 07:14:04,521 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-10-13 07:14:04,521 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 461 flow [2024-10-13 07:14:04,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:04,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:04,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:04,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 07:14:04,522 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:04,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:04,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2131435174, now seen corresponding path program 9 times [2024-10-13 07:14:04,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:04,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845203853] [2024-10-13 07:14:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:04,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:04,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845203853] [2024-10-13 07:14:04,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845203853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:04,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:04,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:14:04,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419023299] [2024-10-13 07:14:04,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:04,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:14:04,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:04,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:14:04,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:14:04,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 07:14:04,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 461 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:04,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:04,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 07:14:04,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:04,986 INFO L124 PetriNetUnfolderBase]: 229/498 cut-off events. [2024-10-13 07:14:04,986 INFO L125 PetriNetUnfolderBase]: For 2520/2544 co-relation queries the response was YES. [2024-10-13 07:14:04,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 498 events. 229/498 cut-off events. For 2520/2544 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2391 event pairs, 39 based on Foata normal form. 5/502 useless extension candidates. Maximal degree in co-relation 1962. Up to 302 conditions per place. [2024-10-13 07:14:04,989 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 60 selfloop transitions, 22 changer transitions 5/91 dead transitions. [2024-10-13 07:14:04,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 91 transitions, 822 flow [2024-10-13 07:14:04,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:14:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:14:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-10-13 07:14:04,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2024-10-13 07:14:04,990 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 461 flow. Second operand 10 states and 127 transitions. [2024-10-13 07:14:04,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 91 transitions, 822 flow [2024-10-13 07:14:04,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 91 transitions, 766 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-10-13 07:14:04,995 INFO L231 Difference]: Finished difference. Result has 84 places, 65 transitions, 510 flow [2024-10-13 07:14:04,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=510, PETRI_PLACES=84, PETRI_TRANSITIONS=65} [2024-10-13 07:14:04,996 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-10-13 07:14:04,996 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 65 transitions, 510 flow [2024-10-13 07:14:04,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:04,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:04,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:04,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 07:14:04,997 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:04,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash -264102008, now seen corresponding path program 10 times [2024-10-13 07:14:04,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:04,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027805066] [2024-10-13 07:14:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:05,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:05,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027805066] [2024-10-13 07:14:05,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027805066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:05,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:14:05,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:14:05,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463486312] [2024-10-13 07:14:05,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:05,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:14:05,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:05,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:14:05,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:14:05,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-13 07:14:05,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 65 transitions, 510 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:05,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:05,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-13 07:14:05,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:05,415 INFO L124 PetriNetUnfolderBase]: 225/485 cut-off events. [2024-10-13 07:14:05,416 INFO L125 PetriNetUnfolderBase]: For 3378/3416 co-relation queries the response was YES. [2024-10-13 07:14:05,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 485 events. 225/485 cut-off events. For 3378/3416 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2318 event pairs, 39 based on Foata normal form. 13/497 useless extension candidates. Maximal degree in co-relation 2014. Up to 306 conditions per place. [2024-10-13 07:14:05,419 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 54 selfloop transitions, 21 changer transitions 8/87 dead transitions. [2024-10-13 07:14:05,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 87 transitions, 817 flow [2024-10-13 07:14:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:14:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:14:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-10-13 07:14:05,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4206896551724138 [2024-10-13 07:14:05,421 INFO L175 Difference]: Start difference. First operand has 84 places, 65 transitions, 510 flow. Second operand 10 states and 122 transitions. [2024-10-13 07:14:05,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 87 transitions, 817 flow [2024-10-13 07:14:05,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 742 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-10-13 07:14:05,425 INFO L231 Difference]: Finished difference. Result has 87 places, 65 transitions, 490 flow [2024-10-13 07:14:05,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=490, PETRI_PLACES=87, PETRI_TRANSITIONS=65} [2024-10-13 07:14:05,426 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-10-13 07:14:05,427 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 65 transitions, 490 flow [2024-10-13 07:14:05,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:05,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:05,427 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:05,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 07:14:05,428 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:05,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1324135758, now seen corresponding path program 1 times [2024-10-13 07:14:05,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:05,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103690799] [2024-10-13 07:14:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:05,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:05,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103690799] [2024-10-13 07:14:05,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103690799] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:14:05,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381150175] [2024-10-13 07:14:05,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:05,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:05,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:05,521 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) [2024-10-13 07:14:05,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:14:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:05,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:14:05,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:14:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:05,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:14:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:05,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381150175] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:14:05,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:14:05,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 07:14:05,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957534579] [2024-10-13 07:14:05,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:14:05,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:14:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:05,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:14:05,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:14:05,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-13 07:14:05,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 65 transitions, 490 flow. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:05,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:05,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-13 07:14:05,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:05,891 INFO L124 PetriNetUnfolderBase]: 359/848 cut-off events. [2024-10-13 07:14:05,892 INFO L125 PetriNetUnfolderBase]: For 6364/6414 co-relation queries the response was YES. [2024-10-13 07:14:05,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3561 conditions, 848 events. 359/848 cut-off events. For 6364/6414 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5021 event pairs, 173 based on Foata normal form. 38/885 useless extension candidates. Maximal degree in co-relation 3532. Up to 369 conditions per place. [2024-10-13 07:14:05,897 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 106 selfloop transitions, 5 changer transitions 10/126 dead transitions. [2024-10-13 07:14:05,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 1203 flow [2024-10-13 07:14:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:14:05,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:14:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-10-13 07:14:05,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2024-10-13 07:14:05,898 INFO L175 Difference]: Start difference. First operand has 87 places, 65 transitions, 490 flow. Second operand 6 states and 89 transitions. [2024-10-13 07:14:05,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 126 transitions, 1203 flow [2024-10-13 07:14:05,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 126 transitions, 1093 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-10-13 07:14:05,906 INFO L231 Difference]: Finished difference. Result has 85 places, 68 transitions, 479 flow [2024-10-13 07:14:05,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=479, PETRI_PLACES=85, PETRI_TRANSITIONS=68} [2024-10-13 07:14:05,907 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-10-13 07:14:05,907 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 68 transitions, 479 flow [2024-10-13 07:14:05,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:05,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:05,908 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:05,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 07:14:06,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 07:14:06,113 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:06,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1135903420, now seen corresponding path program 1 times [2024-10-13 07:14:06,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:06,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692222059] [2024-10-13 07:14:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:06,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:06,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:06,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692222059] [2024-10-13 07:14:06,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692222059] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:14:06,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356168357] [2024-10-13 07:14:06,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:06,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:06,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:06,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:14:06,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:14:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:06,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:14:06,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:14:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:06,297 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:14:06,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356168357] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:14:06,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:14:06,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 07:14:06,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116375483] [2024-10-13 07:14:06,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:14:06,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:14:06,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:06,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:14:06,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:14:06,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-13 07:14:06,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 68 transitions, 479 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:06,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:06,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-13 07:14:06,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:06,408 INFO L124 PetriNetUnfolderBase]: 341/856 cut-off events. [2024-10-13 07:14:06,408 INFO L125 PetriNetUnfolderBase]: For 6848/6985 co-relation queries the response was YES. [2024-10-13 07:14:06,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3456 conditions, 856 events. 341/856 cut-off events. For 6848/6985 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5160 event pairs, 98 based on Foata normal form. 81/936 useless extension candidates. Maximal degree in co-relation 3425. Up to 319 conditions per place. [2024-10-13 07:14:06,412 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 55 selfloop transitions, 7 changer transitions 26/93 dead transitions. [2024-10-13 07:14:06,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 93 transitions, 805 flow [2024-10-13 07:14:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:14:06,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:14:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-13 07:14:06,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-10-13 07:14:06,413 INFO L175 Difference]: Start difference. First operand has 85 places, 68 transitions, 479 flow. Second operand 4 states and 78 transitions. [2024-10-13 07:14:06,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 93 transitions, 805 flow [2024-10-13 07:14:06,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 781 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-13 07:14:06,419 INFO L231 Difference]: Finished difference. Result has 86 places, 41 transitions, 296 flow [2024-10-13 07:14:06,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=86, PETRI_TRANSITIONS=41} [2024-10-13 07:14:06,420 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-10-13 07:14:06,420 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 41 transitions, 296 flow [2024-10-13 07:14:06,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:06,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:06,420 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:06,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 07:14:06,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 07:14:06,625 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:06,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:06,625 INFO L85 PathProgramCache]: Analyzing trace with hash -512073594, now seen corresponding path program 2 times [2024-10-13 07:14:06,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:06,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112332168] [2024-10-13 07:14:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:06,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:06,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:06,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112332168] [2024-10-13 07:14:06,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112332168] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:14:06,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916015142] [2024-10-13 07:14:06,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:14:06,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:06,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:06,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:14:06,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:14:07,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:14:07,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:14:07,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 07:14:07,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:14:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:07,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:14:07,322 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 07:14:07,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-13 07:14:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:07,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916015142] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:14:07,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:14:07,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-10-13 07:14:07,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096841400] [2024-10-13 07:14:07,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:14:07,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-13 07:14:07,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:07,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-13 07:14:07,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2024-10-13 07:14:07,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-10-13 07:14:07,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 41 transitions, 296 flow. Second operand has 22 states, 22 states have (on average 7.590909090909091) internal successors, (167), 22 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:07,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:07,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-10-13 07:14:07,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:08,241 INFO L124 PetriNetUnfolderBase]: 883/1672 cut-off events. [2024-10-13 07:14:08,241 INFO L125 PetriNetUnfolderBase]: For 16259/16259 co-relation queries the response was YES. [2024-10-13 07:14:08,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7148 conditions, 1672 events. 883/1672 cut-off events. For 16259/16259 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8589 event pairs, 78 based on Foata normal form. 61/1731 useless extension candidates. Maximal degree in co-relation 7117. Up to 385 conditions per place. [2024-10-13 07:14:08,252 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 152 selfloop transitions, 46 changer transitions 0/201 dead transitions. [2024-10-13 07:14:08,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 201 transitions, 1836 flow [2024-10-13 07:14:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 07:14:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 07:14:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 261 transitions. [2024-10-13 07:14:08,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-10-13 07:14:08,254 INFO L175 Difference]: Start difference. First operand has 86 places, 41 transitions, 296 flow. Second operand 19 states and 261 transitions. [2024-10-13 07:14:08,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 201 transitions, 1836 flow [2024-10-13 07:14:08,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 201 transitions, 1383 flow, removed 212 selfloop flow, removed 16 redundant places. [2024-10-13 07:14:08,264 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 719 flow [2024-10-13 07:14:08,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=719, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2024-10-13 07:14:08,266 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-10-13 07:14:08,266 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 719 flow [2024-10-13 07:14:08,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.590909090909091) internal successors, (167), 22 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:08,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:08,267 INFO L204 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] [2024-10-13 07:14:08,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 07:14:08,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:08,471 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:08,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:08,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1759470284, now seen corresponding path program 3 times [2024-10-13 07:14:08,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:08,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576301802] [2024-10-13 07:14:08,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:08,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:09,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:09,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576301802] [2024-10-13 07:14:09,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576301802] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:14:09,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963268309] [2024-10-13 07:14:09,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:14:09,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:09,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:09,087 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:14:09,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:14:09,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:14:09,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:14:09,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 07:14:09,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:14:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:14:09,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:14:09,248 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 07:14:09,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-13 07:14:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 07:14:09,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963268309] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:14:09,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:14:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2024-10-13 07:14:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946987158] [2024-10-13 07:14:09,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:14:09,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:14:09,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:09,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:14:09,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:14:09,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-10-13 07:14:09,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 719 flow. Second operand has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:09,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:09,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-10-13 07:14:09,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:09,744 INFO L124 PetriNetUnfolderBase]: 1282/2431 cut-off events. [2024-10-13 07:14:09,744 INFO L125 PetriNetUnfolderBase]: For 12192/12192 co-relation queries the response was YES. [2024-10-13 07:14:09,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9746 conditions, 2431 events. 1282/2431 cut-off events. For 12192/12192 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13752 event pairs, 247 based on Foata normal form. 56/2485 useless extension candidates. Maximal degree in co-relation 9718. Up to 739 conditions per place. [2024-10-13 07:14:09,757 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 134 selfloop transitions, 37 changer transitions 0/174 dead transitions. [2024-10-13 07:14:09,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 174 transitions, 1758 flow [2024-10-13 07:14:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 07:14:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 07:14:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-10-13 07:14:09,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40583554376657827 [2024-10-13 07:14:09,758 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 719 flow. Second operand 13 states and 153 transitions. [2024-10-13 07:14:09,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 174 transitions, 1758 flow [2024-10-13 07:14:09,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 174 transitions, 1614 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-10-13 07:14:09,780 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 833 flow [2024-10-13 07:14:09,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=833, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2024-10-13 07:14:09,781 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-10-13 07:14:09,781 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 833 flow [2024-10-13 07:14:09,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:09,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:09,781 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:09,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 07:14:09,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 07:14:09,982 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:09,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:09,982 INFO L85 PathProgramCache]: Analyzing trace with hash -319072756, now seen corresponding path program 1 times [2024-10-13 07:14:09,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:09,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463697224] [2024-10-13 07:14:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:09,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:10,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:10,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463697224] [2024-10-13 07:14:10,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463697224] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:14:10,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152820158] [2024-10-13 07:14:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:10,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:10,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:10,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:14:10,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 07:14:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:10,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-13 07:14:10,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:14:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:11,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:14:11,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:14:11,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2024-10-13 07:14:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:14:12,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152820158] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:14:12,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:14:12,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 13] total 44 [2024-10-13 07:14:12,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152330202] [2024-10-13 07:14:12,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:14:12,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-13 07:14:12,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:12,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-13 07:14:12,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2024-10-13 07:14:12,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-10-13 07:14:12,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 833 flow. Second operand has 45 states, 45 states have (on average 5.711111111111111) internal successors, (257), 45 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:12,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:12,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-10-13 07:14:12,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:13,806 INFO L124 PetriNetUnfolderBase]: 2327/4345 cut-off events. [2024-10-13 07:14:13,806 INFO L125 PetriNetUnfolderBase]: For 22786/22786 co-relation queries the response was YES. [2024-10-13 07:14:13,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17586 conditions, 4345 events. 2327/4345 cut-off events. For 22786/22786 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 28001 event pairs, 305 based on Foata normal form. 2/4347 useless extension candidates. Maximal degree in co-relation 17556. Up to 2450 conditions per place. [2024-10-13 07:14:13,835 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 177 selfloop transitions, 138 changer transitions 5/322 dead transitions. [2024-10-13 07:14:13,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 322 transitions, 3268 flow [2024-10-13 07:14:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-13 07:14:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-10-13 07:14:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 297 transitions. [2024-10-13 07:14:13,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29261083743842364 [2024-10-13 07:14:13,838 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 833 flow. Second operand 35 states and 297 transitions. [2024-10-13 07:14:13,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 322 transitions, 3268 flow [2024-10-13 07:14:13,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 322 transitions, 3201 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-10-13 07:14:13,880 INFO L231 Difference]: Finished difference. Result has 128 places, 217 transitions, 2564 flow [2024-10-13 07:14:13,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2564, PETRI_PLACES=128, PETRI_TRANSITIONS=217} [2024-10-13 07:14:13,880 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-10-13 07:14:13,880 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 217 transitions, 2564 flow [2024-10-13 07:14:13,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.711111111111111) internal successors, (257), 45 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:13,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:13,881 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:13,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 07:14:14,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 07:14:14,083 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:14,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash 105110766, now seen corresponding path program 2 times [2024-10-13 07:14:14,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:14,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168646863] [2024-10-13 07:14:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:14,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:14,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:14,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168646863] [2024-10-13 07:14:14,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168646863] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:14:14,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461814807] [2024-10-13 07:14:14,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:14:14,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:14,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:14,895 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:14:14,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 07:14:14,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:14:14,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:14:14,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-13 07:14:14,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:14:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:15,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:14:16,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:14:16,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-10-13 07:14:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:16,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461814807] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:14:16,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:14:16,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 49 [2024-10-13 07:14:16,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534109047] [2024-10-13 07:14:16,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:14:16,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-13 07:14:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-13 07:14:16,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2199, Unknown=0, NotChecked=0, Total=2450 [2024-10-13 07:14:16,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-10-13 07:14:16,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 217 transitions, 2564 flow. Second operand has 50 states, 50 states have (on average 5.54) internal successors, (277), 50 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:16,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:16,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-10-13 07:14:16,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:20,772 INFO L124 PetriNetUnfolderBase]: 2737/5159 cut-off events. [2024-10-13 07:14:20,773 INFO L125 PetriNetUnfolderBase]: For 35514/35514 co-relation queries the response was YES. [2024-10-13 07:14:20,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24919 conditions, 5159 events. 2737/5159 cut-off events. For 35514/35514 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 35187 event pairs, 188 based on Foata normal form. 5/5164 useless extension candidates. Maximal degree in co-relation 24882. Up to 2494 conditions per place. [2024-10-13 07:14:20,800 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 260 selfloop transitions, 282 changer transitions 28/572 dead transitions. [2024-10-13 07:14:20,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 572 transitions, 6395 flow [2024-10-13 07:14:20,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-13 07:14:20,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-10-13 07:14:20,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 524 transitions. [2024-10-13 07:14:20,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31699939503932245 [2024-10-13 07:14:20,803 INFO L175 Difference]: Start difference. First operand has 128 places, 217 transitions, 2564 flow. Second operand 57 states and 524 transitions. [2024-10-13 07:14:20,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 572 transitions, 6395 flow [2024-10-13 07:14:20,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 572 transitions, 6296 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-10-13 07:14:20,886 INFO L231 Difference]: Finished difference. Result has 201 places, 377 transitions, 5129 flow [2024-10-13 07:14:20,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=5129, PETRI_PLACES=201, PETRI_TRANSITIONS=377} [2024-10-13 07:14:20,887 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-10-13 07:14:20,887 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 377 transitions, 5129 flow [2024-10-13 07:14:20,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.54) internal successors, (277), 50 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:20,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:20,888 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:20,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 07:14:21,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:21,089 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:21,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1730166744, now seen corresponding path program 3 times [2024-10-13 07:14:21,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:21,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378348842] [2024-10-13 07:14:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:21,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:21,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:21,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378348842] [2024-10-13 07:14:21,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378348842] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:14:21,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804889977] [2024-10-13 07:14:21,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:14:21,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:21,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:21,867 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:14:21,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 07:14:21,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:14:21,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:14:21,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-13 07:14:21,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:14:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:22,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:14:23,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:14:23,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-10-13 07:14:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:23,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804889977] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:14:23,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:14:23,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-10-13 07:14:23,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932162968] [2024-10-13 07:14:23,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:14:23,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-13 07:14:23,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-13 07:14:23,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2024-10-13 07:14:23,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-10-13 07:14:23,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 377 transitions, 5129 flow. Second operand has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:23,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:23,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-10-13 07:14:23,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:27,330 INFO L124 PetriNetUnfolderBase]: 2833/5376 cut-off events. [2024-10-13 07:14:27,330 INFO L125 PetriNetUnfolderBase]: For 58071/58071 co-relation queries the response was YES. [2024-10-13 07:14:27,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31404 conditions, 5376 events. 2833/5376 cut-off events. For 58071/58071 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 37013 event pairs, 216 based on Foata normal form. 3/5379 useless extension candidates. Maximal degree in co-relation 31345. Up to 2796 conditions per place. [2024-10-13 07:14:27,368 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 258 selfloop transitions, 330 changer transitions 10/600 dead transitions. [2024-10-13 07:14:27,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 600 transitions, 8273 flow [2024-10-13 07:14:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-13 07:14:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-10-13 07:14:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 423 transitions. [2024-10-13 07:14:27,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32413793103448274 [2024-10-13 07:14:27,372 INFO L175 Difference]: Start difference. First operand has 201 places, 377 transitions, 5129 flow. Second operand 45 states and 423 transitions. [2024-10-13 07:14:27,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 600 transitions, 8273 flow [2024-10-13 07:14:27,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 600 transitions, 7814 flow, removed 210 selfloop flow, removed 9 redundant places. [2024-10-13 07:14:27,560 INFO L231 Difference]: Finished difference. Result has 246 places, 457 transitions, 7007 flow [2024-10-13 07:14:27,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4788, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7007, PETRI_PLACES=246, PETRI_TRANSITIONS=457} [2024-10-13 07:14:27,561 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2024-10-13 07:14:27,561 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 457 transitions, 7007 flow [2024-10-13 07:14:27,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:27,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:27,562 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:27,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 07:14:27,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:27,763 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:27,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:27,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1779634174, now seen corresponding path program 4 times [2024-10-13 07:14:27,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:27,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547741372] [2024-10-13 07:14:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:27,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:28,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:28,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547741372] [2024-10-13 07:14:28,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547741372] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:14:28,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311655432] [2024-10-13 07:14:28,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:14:28,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:28,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:28,535 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:14:28,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 07:14:28,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:14:28,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:14:28,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-13 07:14:28,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:14:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:29,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:14:29,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:14:29,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-10-13 07:14:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:30,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311655432] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:14:30,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:14:30,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-10-13 07:14:30,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859512128] [2024-10-13 07:14:30,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:14:30,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-13 07:14:30,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:30,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-13 07:14:30,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2024-10-13 07:14:30,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-10-13 07:14:30,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 457 transitions, 7007 flow. Second operand has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:30,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:30,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-10-13 07:14:30,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:39,984 INFO L124 PetriNetUnfolderBase]: 3075/5921 cut-off events. [2024-10-13 07:14:39,985 INFO L125 PetriNetUnfolderBase]: For 81565/81565 co-relation queries the response was YES. [2024-10-13 07:14:40,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37887 conditions, 5921 events. 3075/5921 cut-off events. For 81565/81565 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 42720 event pairs, 193 based on Foata normal form. 3/5924 useless extension candidates. Maximal degree in co-relation 37817. Up to 2734 conditions per place. [2024-10-13 07:14:40,033 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 316 selfloop transitions, 484 changer transitions 10/812 dead transitions. [2024-10-13 07:14:40,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 812 transitions, 11950 flow [2024-10-13 07:14:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-10-13 07:14:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-10-13 07:14:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 683 transitions. [2024-10-13 07:14:40,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3098911070780399 [2024-10-13 07:14:40,035 INFO L175 Difference]: Start difference. First operand has 246 places, 457 transitions, 7007 flow. Second operand 76 states and 683 transitions. [2024-10-13 07:14:40,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 812 transitions, 11950 flow [2024-10-13 07:14:40,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 812 transitions, 11553 flow, removed 125 selfloop flow, removed 21 redundant places. [2024-10-13 07:14:40,330 INFO L231 Difference]: Finished difference. Result has 312 places, 606 transitions, 10486 flow [2024-10-13 07:14:40,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6674, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=352, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=10486, PETRI_PLACES=312, PETRI_TRANSITIONS=606} [2024-10-13 07:14:40,331 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 283 predicate places. [2024-10-13 07:14:40,331 INFO L471 AbstractCegarLoop]: Abstraction has has 312 places, 606 transitions, 10486 flow [2024-10-13 07:14:40,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:40,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:40,331 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:40,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 07:14:40,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-13 07:14:40,536 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:40,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:40,536 INFO L85 PathProgramCache]: Analyzing trace with hash -700160860, now seen corresponding path program 5 times [2024-10-13 07:14:40,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:40,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152983268] [2024-10-13 07:14:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:40,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:41,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:41,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152983268] [2024-10-13 07:14:41,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152983268] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:14:41,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449693279] [2024-10-13 07:14:41,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:14:41,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:41,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:41,273 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:14:41,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 07:14:41,407 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:14:41,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:14:41,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-13 07:14:41,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:14:41,883 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-13 07:14:41,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-13 07:14:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:42,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:14:42,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:14:42,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-10-13 07:14:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:42,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449693279] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:14:42,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:14:42,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-10-13 07:14:42,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144998045] [2024-10-13 07:14:42,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:14:42,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-13 07:14:42,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:42,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-13 07:14:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2024-10-13 07:14:42,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-10-13 07:14:42,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 606 transitions, 10486 flow. Second operand has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:42,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:42,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-10-13 07:14:42,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:47,014 INFO L124 PetriNetUnfolderBase]: 3128/6062 cut-off events. [2024-10-13 07:14:47,014 INFO L125 PetriNetUnfolderBase]: For 112015/112015 co-relation queries the response was YES. [2024-10-13 07:14:47,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43460 conditions, 6062 events. 3128/6062 cut-off events. For 112015/112015 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 44182 event pairs, 234 based on Foata normal form. 3/6065 useless extension candidates. Maximal degree in co-relation 43381. Up to 3110 conditions per place. [2024-10-13 07:14:47,063 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 326 selfloop transitions, 440 changer transitions 10/778 dead transitions. [2024-10-13 07:14:47,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 778 transitions, 13335 flow [2024-10-13 07:14:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-13 07:14:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-13 07:14:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 426 transitions. [2024-10-13 07:14:47,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3193403298350825 [2024-10-13 07:14:47,065 INFO L175 Difference]: Start difference. First operand has 312 places, 606 transitions, 10486 flow. Second operand 46 states and 426 transitions. [2024-10-13 07:14:47,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 778 transitions, 13335 flow [2024-10-13 07:14:47,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 778 transitions, 12632 flow, removed 268 selfloop flow, removed 24 redundant places. [2024-10-13 07:14:47,620 INFO L231 Difference]: Finished difference. Result has 337 places, 628 transitions, 11520 flow [2024-10-13 07:14:47,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9812, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=420, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=11520, PETRI_PLACES=337, PETRI_TRANSITIONS=628} [2024-10-13 07:14:47,621 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 308 predicate places. [2024-10-13 07:14:47,621 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 628 transitions, 11520 flow [2024-10-13 07:14:47,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:47,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:47,621 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:47,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 07:14:47,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:47,822 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:47,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:47,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1600409642, now seen corresponding path program 6 times [2024-10-13 07:14:47,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:47,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459281583] [2024-10-13 07:14:47,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:47,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:48,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:48,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459281583] [2024-10-13 07:14:48,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459281583] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:14:48,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696173475] [2024-10-13 07:14:48,522 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:14:48,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:48,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:48,523 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:14:48,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 07:14:48,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 07:14:48,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:14:48,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-13 07:14:48,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:14:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:49,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:14:49,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:14:49,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2024-10-13 07:14:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:50,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696173475] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:14:50,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:14:50,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 50 [2024-10-13 07:14:50,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205337734] [2024-10-13 07:14:50,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:14:50,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-13 07:14:50,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:50,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-13 07:14:50,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=2302, Unknown=0, NotChecked=0, Total=2550 [2024-10-13 07:14:50,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-10-13 07:14:50,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 628 transitions, 11520 flow. Second operand has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:50,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:50,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-10-13 07:14:50,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:14:56,529 INFO L124 PetriNetUnfolderBase]: 3524/6835 cut-off events. [2024-10-13 07:14:56,529 INFO L125 PetriNetUnfolderBase]: For 152576/152576 co-relation queries the response was YES. [2024-10-13 07:14:56,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51756 conditions, 6835 events. 3524/6835 cut-off events. For 152576/152576 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 50526 event pairs, 288 based on Foata normal form. 5/6840 useless extension candidates. Maximal degree in co-relation 51676. Up to 2625 conditions per place. [2024-10-13 07:14:56,591 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 387 selfloop transitions, 527 changer transitions 12/928 dead transitions. [2024-10-13 07:14:56,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 928 transitions, 16398 flow [2024-10-13 07:14:56,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-10-13 07:14:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2024-10-13 07:14:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 712 transitions. [2024-10-13 07:14:56,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3188535602328706 [2024-10-13 07:14:56,593 INFO L175 Difference]: Start difference. First operand has 337 places, 628 transitions, 11520 flow. Second operand 77 states and 712 transitions. [2024-10-13 07:14:56,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 928 transitions, 16398 flow [2024-10-13 07:14:57,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 928 transitions, 16068 flow, removed 55 selfloop flow, removed 24 redundant places. [2024-10-13 07:14:57,325 INFO L231 Difference]: Finished difference. Result has 397 places, 717 transitions, 14398 flow [2024-10-13 07:14:57,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11212, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=448, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=14398, PETRI_PLACES=397, PETRI_TRANSITIONS=717} [2024-10-13 07:14:57,326 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 368 predicate places. [2024-10-13 07:14:57,326 INFO L471 AbstractCegarLoop]: Abstraction has has 397 places, 717 transitions, 14398 flow [2024-10-13 07:14:57,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:57,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:57,326 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:14:57,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 07:14:57,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 07:14:57,530 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:14:57,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:14:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1012258710, now seen corresponding path program 7 times [2024-10-13 07:14:57,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:14:57,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787082234] [2024-10-13 07:14:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:14:57,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:14:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:14:58,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:14:58,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787082234] [2024-10-13 07:14:58,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787082234] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:14:58,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659694478] [2024-10-13 07:14:58,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:14:58,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:14:58,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:14:58,174 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:14:58,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 07:14:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:14:58,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-13 07:14:58,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:14:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:14:58,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:14:59,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:14:59,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2024-10-13 07:14:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:14:59,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659694478] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:14:59,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:14:59,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 12] total 43 [2024-10-13 07:14:59,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862243090] [2024-10-13 07:14:59,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:14:59,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-13 07:14:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:14:59,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-13 07:14:59,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2024-10-13 07:14:59,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-10-13 07:14:59,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 717 transitions, 14398 flow. Second operand has 44 states, 44 states have (on average 5.75) internal successors, (253), 44 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:59,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:14:59,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-10-13 07:14:59,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:15:01,549 INFO L124 PetriNetUnfolderBase]: 3686/7139 cut-off events. [2024-10-13 07:15:01,550 INFO L125 PetriNetUnfolderBase]: For 193906/193906 co-relation queries the response was YES. [2024-10-13 07:15:01,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58275 conditions, 7139 events. 3686/7139 cut-off events. For 193906/193906 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 53169 event pairs, 289 based on Foata normal form. 5/7144 useless extension candidates. Maximal degree in co-relation 58187. Up to 3856 conditions per place. [2024-10-13 07:15:01,621 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 396 selfloop transitions, 462 changer transitions 25/885 dead transitions. [2024-10-13 07:15:01,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 885 transitions, 18166 flow [2024-10-13 07:15:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-13 07:15:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-13 07:15:01,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 312 transitions. [2024-10-13 07:15:01,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32601880877742945 [2024-10-13 07:15:01,623 INFO L175 Difference]: Start difference. First operand has 397 places, 717 transitions, 14398 flow. Second operand 33 states and 312 transitions. [2024-10-13 07:15:01,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 885 transitions, 18166 flow [2024-10-13 07:15:02,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 885 transitions, 17566 flow, removed 159 selfloop flow, removed 35 redundant places. [2024-10-13 07:15:02,693 INFO L231 Difference]: Finished difference. Result has 404 places, 759 transitions, 16516 flow [2024-10-13 07:15:02,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=13866, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=409, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=16516, PETRI_PLACES=404, PETRI_TRANSITIONS=759} [2024-10-13 07:15:02,694 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 375 predicate places. [2024-10-13 07:15:02,694 INFO L471 AbstractCegarLoop]: Abstraction has has 404 places, 759 transitions, 16516 flow [2024-10-13 07:15:02,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.75) internal successors, (253), 44 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:02,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:02,695 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:15:02,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 07:15:02,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-13 07:15:02,895 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:15:02,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2107075832, now seen corresponding path program 8 times [2024-10-13 07:15:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:02,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569170099] [2024-10-13 07:15:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:02,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:03,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:03,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569170099] [2024-10-13 07:15:03,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569170099] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:15:03,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333760880] [2024-10-13 07:15:03,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:15:03,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:15:03,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:15:03,667 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:15:03,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 07:15:03,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:15:03,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:15:03,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-13 07:15:03,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:15:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:04,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:15:04,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:15:04,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-10-13 07:15:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:05,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333760880] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:15:05,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:15:05,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-10-13 07:15:05,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326419276] [2024-10-13 07:15:05,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:15:05,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-13 07:15:05,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-13 07:15:05,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=2413, Unknown=0, NotChecked=0, Total=2652 [2024-10-13 07:15:05,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-10-13 07:15:05,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 759 transitions, 16516 flow. Second operand has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:05,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:05,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-10-13 07:15:05,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:15:10,386 INFO L124 PetriNetUnfolderBase]: 3690/7164 cut-off events. [2024-10-13 07:15:10,386 INFO L125 PetriNetUnfolderBase]: For 236114/236114 co-relation queries the response was YES. [2024-10-13 07:15:10,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62901 conditions, 7164 events. 3690/7164 cut-off events. For 236114/236114 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 53951 event pairs, 280 based on Foata normal form. 3/7167 useless extension candidates. Maximal degree in co-relation 62804. Up to 3834 conditions per place. [2024-10-13 07:15:10,545 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 393 selfloop transitions, 533 changer transitions 10/938 dead transitions. [2024-10-13 07:15:10,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 938 transitions, 19854 flow [2024-10-13 07:15:10,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-13 07:15:10,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-10-13 07:15:10,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 482 transitions. [2024-10-13 07:15:10,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.313597918022121 [2024-10-13 07:15:10,547 INFO L175 Difference]: Start difference. First operand has 404 places, 759 transitions, 16516 flow. Second operand 53 states and 482 transitions. [2024-10-13 07:15:10,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 938 transitions, 19854 flow [2024-10-13 07:15:11,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 938 transitions, 19614 flow, removed 51 selfloop flow, removed 21 redundant places. [2024-10-13 07:15:11,561 INFO L231 Difference]: Finished difference. Result has 437 places, 781 transitions, 18493 flow [2024-10-13 07:15:11,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=16281, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=18493, PETRI_PLACES=437, PETRI_TRANSITIONS=781} [2024-10-13 07:15:11,562 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 408 predicate places. [2024-10-13 07:15:11,562 INFO L471 AbstractCegarLoop]: Abstraction has has 437 places, 781 transitions, 18493 flow [2024-10-13 07:15:11,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:11,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:11,563 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:15:11,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 07:15:11,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-13 07:15:11,763 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:15:11,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:11,764 INFO L85 PathProgramCache]: Analyzing trace with hash 570403758, now seen corresponding path program 9 times [2024-10-13 07:15:11,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:11,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885711825] [2024-10-13 07:15:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:11,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:12,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:12,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885711825] [2024-10-13 07:15:12,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885711825] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:15:12,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547748359] [2024-10-13 07:15:12,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:15:12,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:15:12,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:15:12,568 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:15:12,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 07:15:12,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:15:12,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:15:12,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-13 07:15:12,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:15:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:13,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:15:13,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:15:13,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2024-10-13 07:15:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547748359] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:15:14,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:15:14,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 50 [2024-10-13 07:15:14,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681238824] [2024-10-13 07:15:14,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:15:14,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-13 07:15:14,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:14,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-13 07:15:14,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=2278, Unknown=0, NotChecked=0, Total=2550 [2024-10-13 07:15:14,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-10-13 07:15:14,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 781 transitions, 18493 flow. Second operand has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:14,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:14,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-10-13 07:15:14,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:15:20,197 INFO L124 PetriNetUnfolderBase]: 3998/7764 cut-off events. [2024-10-13 07:15:20,198 INFO L125 PetriNetUnfolderBase]: For 309443/309443 co-relation queries the response was YES. [2024-10-13 07:15:20,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73003 conditions, 7764 events. 3998/7764 cut-off events. For 309443/309443 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 59215 event pairs, 336 based on Foata normal form. 4/7768 useless extension candidates. Maximal degree in co-relation 72901. Up to 3521 conditions per place. [2024-10-13 07:15:20,272 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 432 selfloop transitions, 558 changer transitions 14/1006 dead transitions. [2024-10-13 07:15:20,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1006 transitions, 23561 flow [2024-10-13 07:15:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-13 07:15:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-10-13 07:15:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 517 transitions. [2024-10-13 07:15:20,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32413793103448274 [2024-10-13 07:15:20,274 INFO L175 Difference]: Start difference. First operand has 437 places, 781 transitions, 18493 flow. Second operand 55 states and 517 transitions. [2024-10-13 07:15:20,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1006 transitions, 23561 flow [2024-10-13 07:15:21,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 1006 transitions, 22991 flow, removed 67 selfloop flow, removed 31 redundant places. [2024-10-13 07:15:21,509 INFO L231 Difference]: Finished difference. Result has 469 places, 848 transitions, 21385 flow [2024-10-13 07:15:21,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=17940, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=498, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=21385, PETRI_PLACES=469, PETRI_TRANSITIONS=848} [2024-10-13 07:15:21,510 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 440 predicate places. [2024-10-13 07:15:21,510 INFO L471 AbstractCegarLoop]: Abstraction has has 469 places, 848 transitions, 21385 flow [2024-10-13 07:15:21,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:21,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:15:21,511 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:15:21,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-13 07:15:21,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-13 07:15:21,711 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:15:21,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:15:21,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2041374758, now seen corresponding path program 10 times [2024-10-13 07:15:21,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:15:21,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151599580] [2024-10-13 07:15:21,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:15:21,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:15:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:15:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:22,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:15:22,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151599580] [2024-10-13 07:15:22,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151599580] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:15:22,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430277052] [2024-10-13 07:15:22,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:15:22,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:15:22,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:15:22,411 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:15:22,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 07:15:22,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:15:22,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:15:22,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-13 07:15:22,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:15:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:23,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:15:23,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:15:23,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2024-10-13 07:15:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:15:23,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430277052] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:15:23,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:15:23,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 16] total 50 [2024-10-13 07:15:23,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964743375] [2024-10-13 07:15:23,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:15:23,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-13 07:15:23,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:15:23,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-13 07:15:23,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=2288, Unknown=0, NotChecked=0, Total=2550 [2024-10-13 07:15:23,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-10-13 07:15:23,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 848 transitions, 21385 flow. Second operand has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:15:23,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:15:23,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-10-13 07:15:23,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand