./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:03:49,899 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:03:49,954 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:03:49,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:03:49,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:03:49,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:03:49,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:03:49,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:03:49,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:03:49,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:03:49,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:03:49,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:03:49,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:03:49,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:03:49,984 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:03:49,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:03:49,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:03:49,984 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:03:49,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:03:49,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:03:49,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:03:49,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:03:49,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:03:49,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:03:49,985 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:03:49,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:03:49,985 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:03:49,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:03:49,985 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:03:49,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:03:49,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:03:49,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:03:49,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:03:49,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:03:49,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:03:49,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:03:49,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:03:49,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:03:49,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:03:49,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:03:49,986 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:03:49,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:03:49,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:03:49,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:03:49,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:03:49,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:03:49,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:03:49,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:03:49,987 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2024-12-02 08:03:50,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:03:50,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:03:50,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:03:50,222 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:03:50,222 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:03:50,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-12-02 08:03:52,828 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/data/e6492107f/76d4368ecea64c6386cdbc54205d162c/FLAG5c5d3a3bc [2024-12-02 08:03:53,024 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:03:53,025 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-12-02 08:03:53,031 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/data/e6492107f/76d4368ecea64c6386cdbc54205d162c/FLAG5c5d3a3bc [2024-12-02 08:03:53,408 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/data/e6492107f/76d4368ecea64c6386cdbc54205d162c [2024-12-02 08:03:53,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:03:53,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:03:53,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:03:53,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:03:53,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:03:53,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bdc064b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53, skipping insertion in model container [2024-12-02 08:03:53,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,436 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:03:53,611 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-12-02 08:03:53,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:03:53,630 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:03:53,657 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-12-02 08:03:53,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:03:53,677 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:03:53,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53 WrapperNode [2024-12-02 08:03:53,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:03:53,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:03:53,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:03:53,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:03:53,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,721 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 300 [2024-12-02 08:03:53,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:03:53,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:03:53,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:03:53,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:03:53,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,734 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,750 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]. [2024-12-02 08:03:53,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,758 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:03:53,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:03:53,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:03:53,769 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:03:53,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (1/1) ... [2024-12-02 08:03:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:03:53,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:03:53,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:03:53,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:03:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:03:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 08:03:53,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 08:03:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 08:03:53,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 08:03:53,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 08:03:53,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 08:03:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:03:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:03:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:03:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:03:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 08:03:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:03:53,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:03:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:03:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:03:53,828 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 08:03:53,929 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:03:53,930 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:03:54,315 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:03:54,315 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:03:54,621 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:03:54,622 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 08:03:54,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:03:54 BoogieIcfgContainer [2024-12-02 08:03:54,622 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:03:54,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:03:54,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:03:54,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:03:54,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:03:53" (1/3) ... [2024-12-02 08:03:54,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6aca5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:03:54, skipping insertion in model container [2024-12-02 08:03:54,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:03:53" (2/3) ... [2024-12-02 08:03:54,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6aca5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:03:54, skipping insertion in model container [2024-12-02 08:03:54,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:03:54" (3/3) ... [2024-12-02 08:03:54,629 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2024-12-02 08:03:54,641 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:03:54,642 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-subst.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-12-02 08:03:54,642 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:03:54,704 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 08:03:54,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 93 flow [2024-12-02 08:03:54,787 INFO L124 PetriNetUnfolderBase]: 7/33 cut-off events. [2024-12-02 08:03:54,789 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-12-02 08:03:54,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 7/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-12-02 08:03:54,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 93 flow [2024-12-02 08:03:54,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 82 flow [2024-12-02 08:03:54,802 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:03:54,813 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;@507dbcc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:03:54,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-12-02 08:03:54,826 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:03:54,827 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2024-12-02 08:03:54,827 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-12-02 08:03:54,827 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:03:54,827 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:54,828 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:03:54,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:54,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2112718655, now seen corresponding path program 1 times [2024-12-02 08:03:54,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:54,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171914812] [2024-12-02 08:03:54,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:54,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:03:55,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:55,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171914812] [2024-12-02 08:03:55,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171914812] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:03:55,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:03:55,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:03:55,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309200479] [2024-12-02 08:03:55,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:03:55,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:03:55,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:55,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:03:55,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:03:55,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:03:55,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:03:55,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:03:55,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:03:55,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:03:55,372 INFO L124 PetriNetUnfolderBase]: 792/1137 cut-off events. [2024-12-02 08:03:55,372 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-12-02 08:03:55,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 1137 events. 792/1137 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3709 event pairs, 608 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 2150. Up to 1137 conditions per place. [2024-12-02 08:03:55,381 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 28 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2024-12-02 08:03:55,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 132 flow [2024-12-02 08:03:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:03:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 08:03:55,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2024-12-02 08:03:55,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-12-02 08:03:55,395 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 82 flow. Second operand 2 states and 39 transitions. [2024-12-02 08:03:55,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 132 flow [2024-12-02 08:03:55,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-12-02 08:03:55,404 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 64 flow [2024-12-02 08:03:55,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2024-12-02 08:03:55,410 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2024-12-02 08:03:55,410 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 64 flow [2024-12-02 08:03:55,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:03:55,410 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:03:55,411 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:55,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:03:55,411 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:03:55,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:55,412 INFO L85 PathProgramCache]: Analyzing trace with hash -304056944, now seen corresponding path program 1 times [2024-12-02 08:03:55,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:55,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611976753] [2024-12-02 08:03:55,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:55,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:03:55,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:55,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611976753] [2024-12-02 08:03:55,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611976753] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:03:55,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:03:55,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:03:55,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671108433] [2024-12-02 08:03:55,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:03:55,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:03:55,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:55,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:03:55,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:03:55,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:03:55,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:03:55,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:03:55,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:03:55,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:03:55,880 INFO L124 PetriNetUnfolderBase]: 792/1138 cut-off events. [2024-12-02 08:03:55,881 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-12-02 08:03:55,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1138 events. 792/1138 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3704 event pairs, 608 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 2306. Up to 1137 conditions per place. [2024-12-02 08:03:55,887 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-12-02 08:03:55,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 124 flow [2024-12-02 08:03:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:03:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:03:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-12-02 08:03:55,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-12-02 08:03:55,889 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 64 flow. Second operand 3 states and 42 transitions. [2024-12-02 08:03:55,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 124 flow [2024-12-02 08:03:55,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:03:55,891 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 76 flow [2024-12-02 08:03:55,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2024-12-02 08:03:55,892 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2024-12-02 08:03:55,892 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 76 flow [2024-12-02 08:03:55,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:03:55,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:03:55,893 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:55,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:03:55,893 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:03:55,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash -873947199, now seen corresponding path program 1 times [2024-12-02 08:03:55,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:55,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223057550] [2024-12-02 08:03:55,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:55,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:03:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223057550] [2024-12-02 08:03:56,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223057550] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:03:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313142892] [2024-12-02 08:03:56,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:56,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:03:56,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:03:56,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:03:56,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:03:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:56,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 08:03:56,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:03:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:03:56,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:03:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:03:56,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313142892] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:03:56,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:03:56,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-12-02 08:03:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783297002] [2024-12-02 08:03:56,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:03:56,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:03:56,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:56,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:03:56,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:03:56,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:03:56,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:03:56,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:03:56,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:03:56,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:03:56,566 INFO L124 PetriNetUnfolderBase]: 792/1140 cut-off events. [2024-12-02 08:03:56,566 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-12-02 08:03:56,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 1140 events. 792/1140 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3704 event pairs, 608 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 2317. Up to 1137 conditions per place. [2024-12-02 08:03:56,573 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-12-02 08:03:56,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 146 flow [2024-12-02 08:03:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:03:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 08:03:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2024-12-02 08:03:56,575 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2024-12-02 08:03:56,575 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 76 flow. Second operand 5 states and 53 transitions. [2024-12-02 08:03:56,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 146 flow [2024-12-02 08:03:56,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 08:03:56,577 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 98 flow [2024-12-02 08:03:56,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-12-02 08:03:56,577 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-12-02 08:03:56,578 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 98 flow [2024-12-02 08:03:56,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:03:56,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:03:56,578 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:56,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:03:56,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:03:56,779 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:03:56,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:56,779 INFO L85 PathProgramCache]: Analyzing trace with hash 730602913, now seen corresponding path program 2 times [2024-12-02 08:03:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:56,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793314221] [2024-12-02 08:03:56,780 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:03:56,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:56,839 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:03:56,839 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:03:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:03:57,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:57,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793314221] [2024-12-02 08:03:57,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793314221] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:03:57,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:03:57,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:03:57,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406176395] [2024-12-02 08:03:57,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:03:57,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:03:57,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:57,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:03:57,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:03:57,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:03:57,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:03:57,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:03:57,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:03:57,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:03:57,980 INFO L124 PetriNetUnfolderBase]: 1926/2789 cut-off events. [2024-12-02 08:03:57,980 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-12-02 08:03:57,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 2789 events. 1926/2789 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11941 event pairs, 608 based on Foata normal form. 1/2306 useless extension candidates. Maximal degree in co-relation 5639. Up to 1184 conditions per place. [2024-12-02 08:03:57,989 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 75 selfloop transitions, 7 changer transitions 11/94 dead transitions. [2024-12-02 08:03:57,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 94 transitions, 421 flow [2024-12-02 08:03:57,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:03:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:03:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-12-02 08:03:57,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-12-02 08:03:57,991 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 98 flow. Second operand 6 states and 115 transitions. [2024-12-02 08:03:57,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 94 transitions, 421 flow [2024-12-02 08:03:57,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 94 transitions, 411 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-12-02 08:03:57,993 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 139 flow [2024-12-02 08:03:57,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-12-02 08:03:57,994 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2024-12-02 08:03:57,994 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 139 flow [2024-12-02 08:03:57,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:03:57,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:03:57,994 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:57,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:03:57,995 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:03:57,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash -206697169, now seen corresponding path program 3 times [2024-12-02 08:03:57,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:57,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311887539] [2024-12-02 08:03:57,995 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:03:57,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:58,046 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 08:03:58,046 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:03:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:03:58,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:58,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311887539] [2024-12-02 08:03:58,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311887539] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:03:58,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:03:58,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:03:58,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186699676] [2024-12-02 08:03:58,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:03:58,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:03:58,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:58,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:03:58,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:03:58,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:03:58,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:03:58,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:03:58,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:03:58,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:03:59,208 INFO L124 PetriNetUnfolderBase]: 2953/4259 cut-off events. [2024-12-02 08:03:59,208 INFO L125 PetriNetUnfolderBase]: For 1350/1350 co-relation queries the response was YES. [2024-12-02 08:03:59,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10364 conditions, 4259 events. 2953/4259 cut-off events. For 1350/1350 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 19029 event pairs, 1209 based on Foata normal form. 1/4030 useless extension candidates. Maximal degree in co-relation 10352. Up to 2089 conditions per place. [2024-12-02 08:03:59,231 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 74 selfloop transitions, 8 changer transitions 11/94 dead transitions. [2024-12-02 08:03:59,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 94 transitions, 486 flow [2024-12-02 08:03:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:03:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:03:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-12-02 08:03:59,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-12-02 08:03:59,234 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 139 flow. Second operand 6 states and 105 transitions. [2024-12-02 08:03:59,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 94 transitions, 486 flow [2024-12-02 08:03:59,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 94 transitions, 482 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-12-02 08:03:59,242 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 196 flow [2024-12-02 08:03:59,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2024-12-02 08:03:59,243 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2024-12-02 08:03:59,243 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 196 flow [2024-12-02 08:03:59,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:03:59,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:03:59,243 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:59,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:03:59,244 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:03:59,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:59,244 INFO L85 PathProgramCache]: Analyzing trace with hash 164032703, now seen corresponding path program 4 times [2024-12-02 08:03:59,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:59,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450071420] [2024-12-02 08:03:59,244 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:03:59,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:59,275 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:03:59,275 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:03:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:03:59,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:59,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450071420] [2024-12-02 08:03:59,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450071420] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:03:59,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:03:59,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:03:59,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615590713] [2024-12-02 08:03:59,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:03:59,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:03:59,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:59,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:03:59,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:03:59,805 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:03:59,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:03:59,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:03:59,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:03:59,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:01,214 INFO L124 PetriNetUnfolderBase]: 6978/10217 cut-off events. [2024-12-02 08:04:01,215 INFO L125 PetriNetUnfolderBase]: For 11309/11309 co-relation queries the response was YES. [2024-12-02 08:04:01,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28381 conditions, 10217 events. 6978/10217 cut-off events. For 11309/11309 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 57405 event pairs, 2510 based on Foata normal form. 1/9636 useless extension candidates. Maximal degree in co-relation 28365. Up to 4351 conditions per place. [2024-12-02 08:04:01,270 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 128 selfloop transitions, 16 changer transitions 3/148 dead transitions. [2024-12-02 08:04:01,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 148 transitions, 1000 flow [2024-12-02 08:04:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-12-02 08:04:01,272 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-12-02 08:04:01,272 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 196 flow. Second operand 7 states and 136 transitions. [2024-12-02 08:04:01,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 148 transitions, 1000 flow [2024-12-02 08:04:01,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 148 transitions, 968 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-12-02 08:04:01,283 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 372 flow [2024-12-02 08:04:01,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=372, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-12-02 08:04:01,284 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 26 predicate places. [2024-12-02 08:04:01,284 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 372 flow [2024-12-02 08:04:01,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:01,285 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:01,285 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:01,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:04:01,285 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:01,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash 119286685, now seen corresponding path program 5 times [2024-12-02 08:04:01,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:01,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342196994] [2024-12-02 08:04:01,286 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:04:01,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:01,325 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:04:01,325 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:04:02,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:02,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342196994] [2024-12-02 08:04:02,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342196994] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:04:02,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972297575] [2024-12-02 08:04:02,053 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:04:02,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:04:02,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:04:02,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:04:02,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:04:02,171 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:04:02,172 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:02,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 08:04:02,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:04:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:02,564 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:04:02,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972297575] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:02,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:04:02,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2024-12-02 08:04:02,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203042564] [2024-12-02 08:04:02,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:02,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:04:02,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:02,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:04:02,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:04:02,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:02,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 372 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:02,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:02,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:02,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:03,805 INFO L124 PetriNetUnfolderBase]: 7030/10307 cut-off events. [2024-12-02 08:04:03,805 INFO L125 PetriNetUnfolderBase]: For 17785/17785 co-relation queries the response was YES. [2024-12-02 08:04:03,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32321 conditions, 10307 events. 7030/10307 cut-off events. For 17785/17785 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 56065 event pairs, 2691 based on Foata normal form. 1/10308 useless extension candidates. Maximal degree in co-relation 32301. Up to 4814 conditions per place. [2024-12-02 08:04:03,848 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 105 selfloop transitions, 27 changer transitions 4/137 dead transitions. [2024-12-02 08:04:03,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 137 transitions, 1023 flow [2024-12-02 08:04:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-12-02 08:04:03,850 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-12-02 08:04:03,850 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 372 flow. Second operand 7 states and 123 transitions. [2024-12-02 08:04:03,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 137 transitions, 1023 flow [2024-12-02 08:04:03,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 137 transitions, 1023 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:04:03,884 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 630 flow [2024-12-02 08:04:03,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=630, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-12-02 08:04:03,885 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2024-12-02 08:04:03,885 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 630 flow [2024-12-02 08:04:03,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:03,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:03,885 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:03,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:04:04,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 08:04:04,086 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:04,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:04,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2008221055, now seen corresponding path program 6 times [2024-12-02 08:04:04,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:04,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3173412] [2024-12-02 08:04:04,087 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 08:04:04,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:04,124 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-12-02 08:04:04,124 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:04,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:04,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3173412] [2024-12-02 08:04:04,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3173412] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:04,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:04,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:04:04,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461547486] [2024-12-02 08:04:04,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:04,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:04:04,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:04,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:04:04,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:04:04,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:04,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 630 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:04,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:04,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:04,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:05,922 INFO L124 PetriNetUnfolderBase]: 7030/10299 cut-off events. [2024-12-02 08:04:05,922 INFO L125 PetriNetUnfolderBase]: For 28534/28534 co-relation queries the response was YES. [2024-12-02 08:04:05,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35662 conditions, 10299 events. 7030/10299 cut-off events. For 28534/28534 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 57025 event pairs, 2635 based on Foata normal form. 4/10303 useless extension candidates. Maximal degree in co-relation 35636. Up to 4465 conditions per place. [2024-12-02 08:04:05,965 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 95 selfloop transitions, 31 changer transitions 15/142 dead transitions. [2024-12-02 08:04:05,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 142 transitions, 1255 flow [2024-12-02 08:04:05,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:04:05,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:04:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-12-02 08:04:05,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-12-02 08:04:05,966 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 630 flow. Second operand 6 states and 109 transitions. [2024-12-02 08:04:05,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 142 transitions, 1255 flow [2024-12-02 08:04:06,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 142 transitions, 1239 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-12-02 08:04:06,038 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 765 flow [2024-12-02 08:04:06,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=765, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-12-02 08:04:06,039 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 46 predicate places. [2024-12-02 08:04:06,039 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 765 flow [2024-12-02 08:04:06,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:06,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:06,039 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:06,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:04:06,039 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:06,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:06,040 INFO L85 PathProgramCache]: Analyzing trace with hash 981154935, now seen corresponding path program 7 times [2024-12-02 08:04:06,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:06,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560682902] [2024-12-02 08:04:06,040 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 08:04:06,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:04:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:06,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:06,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560682902] [2024-12-02 08:04:06,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560682902] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:06,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:06,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:04:06,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291547085] [2024-12-02 08:04:06,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:06,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:04:06,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:06,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:04:06,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:04:06,489 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:06,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 765 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:06,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:06,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:06,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:07,606 INFO L124 PetriNetUnfolderBase]: 6979/10193 cut-off events. [2024-12-02 08:04:07,606 INFO L125 PetriNetUnfolderBase]: For 39192/39192 co-relation queries the response was YES. [2024-12-02 08:04:07,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37809 conditions, 10193 events. 6979/10193 cut-off events. For 39192/39192 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 56062 event pairs, 2460 based on Foata normal form. 5/10198 useless extension candidates. Maximal degree in co-relation 37778. Up to 4572 conditions per place. [2024-12-02 08:04:07,650 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 89 selfloop transitions, 34 changer transitions 15/139 dead transitions. [2024-12-02 08:04:07,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 139 transitions, 1342 flow [2024-12-02 08:04:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:04:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:04:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-12-02 08:04:07,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-12-02 08:04:07,651 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 765 flow. Second operand 6 states and 110 transitions. [2024-12-02 08:04:07,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 139 transitions, 1342 flow [2024-12-02 08:04:07,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 139 transitions, 1304 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-12-02 08:04:07,728 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 870 flow [2024-12-02 08:04:07,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=870, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2024-12-02 08:04:07,728 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 51 predicate places. [2024-12-02 08:04:07,728 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 870 flow [2024-12-02 08:04:07,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:07,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:07,729 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:07,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:04:07,729 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:07,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:07,729 INFO L85 PathProgramCache]: Analyzing trace with hash 484330915, now seen corresponding path program 8 times [2024-12-02 08:04:07,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:07,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520464164] [2024-12-02 08:04:07,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:04:07,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:07,750 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:04:07,750 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:07,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:07,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520464164] [2024-12-02 08:04:07,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520464164] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:07,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:07,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:04:07,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887063079] [2024-12-02 08:04:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:07,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:04:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:07,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:04:07,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:04:07,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:07,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 870 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:07,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:07,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:07,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:09,474 INFO L124 PetriNetUnfolderBase]: 6951/10176 cut-off events. [2024-12-02 08:04:09,475 INFO L125 PetriNetUnfolderBase]: For 45904/45904 co-relation queries the response was YES. [2024-12-02 08:04:09,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38524 conditions, 10176 events. 6951/10176 cut-off events. For 45904/45904 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 55254 event pairs, 2773 based on Foata normal form. 5/10181 useless extension candidates. Maximal degree in co-relation 38491. Up to 4814 conditions per place. [2024-12-02 08:04:09,525 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 102 selfloop transitions, 28 changer transitions 17/148 dead transitions. [2024-12-02 08:04:09,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 148 transitions, 1488 flow [2024-12-02 08:04:09,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:04:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:04:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-12-02 08:04:09,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-12-02 08:04:09,527 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 870 flow. Second operand 6 states and 110 transitions. [2024-12-02 08:04:09,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 148 transitions, 1488 flow [2024-12-02 08:04:09,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 148 transitions, 1419 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-12-02 08:04:09,648 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 925 flow [2024-12-02 08:04:09,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=925, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2024-12-02 08:04:09,648 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 55 predicate places. [2024-12-02 08:04:09,648 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 925 flow [2024-12-02 08:04:09,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:09,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:09,649 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:09,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:04:09,649 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:09,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:09,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2037573931, now seen corresponding path program 9 times [2024-12-02 08:04:09,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:09,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795131679] [2024-12-02 08:04:09,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:04:09,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:09,672 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 08:04:09,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:10,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:10,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795131679] [2024-12-02 08:04:10,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795131679] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:10,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:10,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:04:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389465925] [2024-12-02 08:04:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:10,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:04:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:10,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:04:10,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:04:10,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:10,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 925 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:10,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:10,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:10,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:11,408 INFO L124 PetriNetUnfolderBase]: 7260/10678 cut-off events. [2024-12-02 08:04:11,409 INFO L125 PetriNetUnfolderBase]: For 52297/52297 co-relation queries the response was YES. [2024-12-02 08:04:11,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40796 conditions, 10678 events. 7260/10678 cut-off events. For 52297/52297 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 61076 event pairs, 2661 based on Foata normal form. 1/10679 useless extension candidates. Maximal degree in co-relation 40761. Up to 4282 conditions per place. [2024-12-02 08:04:11,477 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 182 selfloop transitions, 25 changer transitions 4/212 dead transitions. [2024-12-02 08:04:11,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 212 transitions, 2678 flow [2024-12-02 08:04:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:11,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:11,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-12-02 08:04:11,479 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-12-02 08:04:11,479 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 925 flow. Second operand 7 states and 128 transitions. [2024-12-02 08:04:11,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 212 transitions, 2678 flow [2024-12-02 08:04:11,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 212 transitions, 2551 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-12-02 08:04:11,570 INFO L231 Difference]: Finished difference. Result has 97 places, 98 transitions, 1245 flow [2024-12-02 08:04:11,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1245, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2024-12-02 08:04:11,570 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 62 predicate places. [2024-12-02 08:04:11,571 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 1245 flow [2024-12-02 08:04:11,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:11,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:11,571 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:11,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:04:11,571 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:11,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:11,571 INFO L85 PathProgramCache]: Analyzing trace with hash -793126587, now seen corresponding path program 10 times [2024-12-02 08:04:11,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:11,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750854149] [2024-12-02 08:04:11,572 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:04:11,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:11,591 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:04:11,591 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:11,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:11,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750854149] [2024-12-02 08:04:11,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750854149] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:11,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:11,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:04:11,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047726420] [2024-12-02 08:04:11,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:11,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:04:11,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:11,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:04:11,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:04:11,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:11,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 98 transitions, 1245 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:11,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:11,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:11,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:13,041 INFO L124 PetriNetUnfolderBase]: 7260/10668 cut-off events. [2024-12-02 08:04:13,042 INFO L125 PetriNetUnfolderBase]: For 58211/58211 co-relation queries the response was YES. [2024-12-02 08:04:13,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42549 conditions, 10668 events. 7260/10668 cut-off events. For 58211/58211 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 59061 event pairs, 2821 based on Foata normal form. 5/10673 useless extension candidates. Maximal degree in co-relation 42510. Up to 4877 conditions per place. [2024-12-02 08:04:13,080 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 102 selfloop transitions, 42 changer transitions 18/163 dead transitions. [2024-12-02 08:04:13,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 163 transitions, 1942 flow [2024-12-02 08:04:13,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:04:13,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:04:13,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-12-02 08:04:13,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-12-02 08:04:13,081 INFO L175 Difference]: Start difference. First operand has 97 places, 98 transitions, 1245 flow. Second operand 6 states and 108 transitions. [2024-12-02 08:04:13,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 163 transitions, 1942 flow [2024-12-02 08:04:13,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 163 transitions, 1913 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-12-02 08:04:13,207 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 1334 flow [2024-12-02 08:04:13,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1334, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-12-02 08:04:13,207 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 68 predicate places. [2024-12-02 08:04:13,208 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 1334 flow [2024-12-02 08:04:13,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:13,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:13,208 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:13,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:04:13,208 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:13,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash -947761570, now seen corresponding path program 1 times [2024-12-02 08:04:13,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:13,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86498126] [2024-12-02 08:04:13,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:04:13,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:04:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:13,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:13,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86498126] [2024-12-02 08:04:13,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86498126] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:13,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:13,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:04:13,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342881597] [2024-12-02 08:04:13,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:13,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:04:13,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:13,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:04:13,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:04:13,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:13,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 1334 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:13,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:13,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:13,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:14,923 INFO L124 PetriNetUnfolderBase]: 8495/12493 cut-off events. [2024-12-02 08:04:14,923 INFO L125 PetriNetUnfolderBase]: For 69432/69432 co-relation queries the response was YES. [2024-12-02 08:04:14,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49261 conditions, 12493 events. 8495/12493 cut-off events. For 69432/69432 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 72991 event pairs, 1129 based on Foata normal form. 13/12506 useless extension candidates. Maximal degree in co-relation 49220. Up to 7984 conditions per place. [2024-12-02 08:04:14,979 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 197 selfloop transitions, 24 changer transitions 1/223 dead transitions. [2024-12-02 08:04:14,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 223 transitions, 2970 flow [2024-12-02 08:04:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-12-02 08:04:14,980 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-12-02 08:04:14,980 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 1334 flow. Second operand 7 states and 129 transitions. [2024-12-02 08:04:14,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 223 transitions, 2970 flow [2024-12-02 08:04:15,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 223 transitions, 2770 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-12-02 08:04:15,120 INFO L231 Difference]: Finished difference. Result has 107 places, 110 transitions, 1499 flow [2024-12-02 08:04:15,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1499, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2024-12-02 08:04:15,120 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 72 predicate places. [2024-12-02 08:04:15,120 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 1499 flow [2024-12-02 08:04:15,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:15,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:15,120 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:15,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:04:15,121 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:15,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:15,121 INFO L85 PathProgramCache]: Analyzing trace with hash 514616054, now seen corresponding path program 2 times [2024-12-02 08:04:15,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:15,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684216046] [2024-12-02 08:04:15,121 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:04:15,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:15,149 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:04:15,149 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:15,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:15,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684216046] [2024-12-02 08:04:15,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684216046] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:15,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:15,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 08:04:15,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867951928] [2024-12-02 08:04:15,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:15,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 08:04:15,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:15,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 08:04:15,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:04:15,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:15,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 1499 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:15,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:15,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:15,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:17,017 INFO L124 PetriNetUnfolderBase]: 8839/13062 cut-off events. [2024-12-02 08:04:17,017 INFO L125 PetriNetUnfolderBase]: For 78920/78920 co-relation queries the response was YES. [2024-12-02 08:04:17,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52624 conditions, 13062 events. 8839/13062 cut-off events. For 78920/78920 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 76866 event pairs, 2904 based on Foata normal form. 13/13075 useless extension candidates. Maximal degree in co-relation 52580. Up to 4328 conditions per place. [2024-12-02 08:04:17,090 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 209 selfloop transitions, 27 changer transitions 1/238 dead transitions. [2024-12-02 08:04:17,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 238 transitions, 3143 flow [2024-12-02 08:04:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-12-02 08:04:17,092 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5436507936507936 [2024-12-02 08:04:17,092 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 1499 flow. Second operand 7 states and 137 transitions. [2024-12-02 08:04:17,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 238 transitions, 3143 flow [2024-12-02 08:04:17,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 238 transitions, 3112 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-12-02 08:04:17,290 INFO L231 Difference]: Finished difference. Result has 116 places, 121 transitions, 1787 flow [2024-12-02 08:04:17,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1787, PETRI_PLACES=116, PETRI_TRANSITIONS=121} [2024-12-02 08:04:17,290 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 81 predicate places. [2024-12-02 08:04:17,290 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 121 transitions, 1787 flow [2024-12-02 08:04:17,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:17,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:17,290 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:17,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:04:17,291 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:17,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:17,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2113500150, now seen corresponding path program 3 times [2024-12-02 08:04:17,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:17,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056025461] [2024-12-02 08:04:17,291 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:04:17,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:17,314 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 08:04:17,314 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:17,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:17,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056025461] [2024-12-02 08:04:17,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056025461] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:17,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:17,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:04:17,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208213383] [2024-12-02 08:04:17,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:17,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:04:17,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:17,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:04:17,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:04:17,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:17,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 1787 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:17,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:17,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:17,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:19,522 INFO L124 PetriNetUnfolderBase]: 9271/13700 cut-off events. [2024-12-02 08:04:19,522 INFO L125 PetriNetUnfolderBase]: For 92201/92201 co-relation queries the response was YES. [2024-12-02 08:04:19,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56609 conditions, 13700 events. 9271/13700 cut-off events. For 92201/92201 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 81491 event pairs, 2688 based on Foata normal form. 8/13708 useless extension candidates. Maximal degree in co-relation 56561. Up to 4360 conditions per place. [2024-12-02 08:04:19,587 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 197 selfloop transitions, 46 changer transitions 1/245 dead transitions. [2024-12-02 08:04:19,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 245 transitions, 3300 flow [2024-12-02 08:04:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-12-02 08:04:19,589 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-12-02 08:04:19,589 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 1787 flow. Second operand 7 states and 147 transitions. [2024-12-02 08:04:19,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 245 transitions, 3300 flow [2024-12-02 08:04:19,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 245 transitions, 3264 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-12-02 08:04:19,821 INFO L231 Difference]: Finished difference. Result has 123 places, 129 transitions, 2004 flow [2024-12-02 08:04:19,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2004, PETRI_PLACES=123, PETRI_TRANSITIONS=129} [2024-12-02 08:04:19,821 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 88 predicate places. [2024-12-02 08:04:19,821 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 129 transitions, 2004 flow [2024-12-02 08:04:19,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:19,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:19,822 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:19,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 08:04:19,822 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:19,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:19,822 INFO L85 PathProgramCache]: Analyzing trace with hash -253691240, now seen corresponding path program 1 times [2024-12-02 08:04:19,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:19,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732540941] [2024-12-02 08:04:19,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:04:19,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:04:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:20,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:20,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732540941] [2024-12-02 08:04:20,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732540941] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:20,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:20,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:04:20,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663894445] [2024-12-02 08:04:20,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:20,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:04:20,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:20,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:04:20,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:04:20,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:20,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 129 transitions, 2004 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:20,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:20,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:20,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:22,297 INFO L124 PetriNetUnfolderBase]: 11027/16261 cut-off events. [2024-12-02 08:04:22,297 INFO L125 PetriNetUnfolderBase]: For 112061/112061 co-relation queries the response was YES. [2024-12-02 08:04:22,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67349 conditions, 16261 events. 11027/16261 cut-off events. For 112061/112061 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 96524 event pairs, 2145 based on Foata normal form. 8/16269 useless extension candidates. Maximal degree in co-relation 67298. Up to 7584 conditions per place. [2024-12-02 08:04:22,409 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 196 selfloop transitions, 42 changer transitions 1/240 dead transitions. [2024-12-02 08:04:22,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 240 transitions, 3399 flow [2024-12-02 08:04:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:22,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-12-02 08:04:22,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-12-02 08:04:22,410 INFO L175 Difference]: Start difference. First operand has 123 places, 129 transitions, 2004 flow. Second operand 7 states and 133 transitions. [2024-12-02 08:04:22,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 240 transitions, 3399 flow [2024-12-02 08:04:22,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 240 transitions, 3239 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-12-02 08:04:22,853 INFO L231 Difference]: Finished difference. Result has 130 places, 143 transitions, 2251 flow [2024-12-02 08:04:22,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2251, PETRI_PLACES=130, PETRI_TRANSITIONS=143} [2024-12-02 08:04:22,853 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 95 predicate places. [2024-12-02 08:04:22,853 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 143 transitions, 2251 flow [2024-12-02 08:04:22,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:22,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:22,854 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:22,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 08:04:22,854 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:22,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:22,854 INFO L85 PathProgramCache]: Analyzing trace with hash -444695776, now seen corresponding path program 4 times [2024-12-02 08:04:22,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:22,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337835365] [2024-12-02 08:04:22,854 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:04:22,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:22,867 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:04:22,867 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:23,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:23,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337835365] [2024-12-02 08:04:23,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337835365] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:23,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:23,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:04:23,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928036387] [2024-12-02 08:04:23,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:23,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:04:23,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:23,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:04:23,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:04:23,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:23,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 143 transitions, 2251 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:23,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:23,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:23,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:25,169 INFO L124 PetriNetUnfolderBase]: 11371/16830 cut-off events. [2024-12-02 08:04:25,169 INFO L125 PetriNetUnfolderBase]: For 125134/125134 co-relation queries the response was YES. [2024-12-02 08:04:25,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70242 conditions, 16830 events. 11371/16830 cut-off events. For 125134/125134 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 103223 event pairs, 3120 based on Foata normal form. 13/16843 useless extension candidates. Maximal degree in co-relation 70187. Up to 5369 conditions per place. [2024-12-02 08:04:25,267 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 210 selfloop transitions, 54 changer transitions 1/266 dead transitions. [2024-12-02 08:04:25,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 266 transitions, 3873 flow [2024-12-02 08:04:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-12-02 08:04:25,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2024-12-02 08:04:25,268 INFO L175 Difference]: Start difference. First operand has 130 places, 143 transitions, 2251 flow. Second operand 7 states and 146 transitions. [2024-12-02 08:04:25,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 266 transitions, 3873 flow [2024-12-02 08:04:25,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 266 transitions, 3767 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-12-02 08:04:25,601 INFO L231 Difference]: Finished difference. Result has 137 places, 146 transitions, 2382 flow [2024-12-02 08:04:25,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2382, PETRI_PLACES=137, PETRI_TRANSITIONS=146} [2024-12-02 08:04:25,602 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 102 predicate places. [2024-12-02 08:04:25,602 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 146 transitions, 2382 flow [2024-12-02 08:04:25,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:25,602 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:25,602 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:25,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 08:04:25,602 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:25,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1827308240, now seen corresponding path program 2 times [2024-12-02 08:04:25,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:25,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394301013] [2024-12-02 08:04:25,603 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:04:25,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:25,625 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:04:25,625 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:25,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:25,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:25,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394301013] [2024-12-02 08:04:25,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394301013] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:25,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:25,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 08:04:25,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549237332] [2024-12-02 08:04:25,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:25,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 08:04:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:25,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 08:04:25,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:04:25,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:25,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 146 transitions, 2382 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:25,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:25,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:25,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:29,343 INFO L124 PetriNetUnfolderBase]: 17827/26342 cut-off events. [2024-12-02 08:04:29,343 INFO L125 PetriNetUnfolderBase]: For 197059/197059 co-relation queries the response was YES. [2024-12-02 08:04:29,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110015 conditions, 26342 events. 17827/26342 cut-off events. For 197059/197059 co-relation queries the response was YES. Maximal size of possible extension queue 1051. Compared 169157 event pairs, 2702 based on Foata normal form. 8/26350 useless extension candidates. Maximal degree in co-relation 109957. Up to 12481 conditions per place. [2024-12-02 08:04:29,539 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 255 selfloop transitions, 61 changer transitions 1/318 dead transitions. [2024-12-02 08:04:29,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 318 transitions, 5216 flow [2024-12-02 08:04:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-12-02 08:04:29,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-12-02 08:04:29,540 INFO L175 Difference]: Start difference. First operand has 137 places, 146 transitions, 2382 flow. Second operand 7 states and 132 transitions. [2024-12-02 08:04:29,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 318 transitions, 5216 flow [2024-12-02 08:04:30,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 318 transitions, 5062 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-12-02 08:04:30,264 INFO L231 Difference]: Finished difference. Result has 146 places, 187 transitions, 3249 flow [2024-12-02 08:04:30,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3249, PETRI_PLACES=146, PETRI_TRANSITIONS=187} [2024-12-02 08:04:30,264 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 111 predicate places. [2024-12-02 08:04:30,264 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 187 transitions, 3249 flow [2024-12-02 08:04:30,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:30,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:30,265 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:30,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 08:04:30,265 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:30,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:30,265 INFO L85 PathProgramCache]: Analyzing trace with hash 648645782, now seen corresponding path program 5 times [2024-12-02 08:04:30,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:30,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832401836] [2024-12-02 08:04:30,266 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:04:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:30,307 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:04:30,307 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:30,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:30,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832401836] [2024-12-02 08:04:30,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832401836] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:04:30,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382026686] [2024-12-02 08:04:30,653 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:04:30,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:04:30,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:04:30,655 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:04:30,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:04:30,744 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:04:30,744 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:30,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 08:04:30,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:04:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:30,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:04:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:31,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382026686] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:04:31,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:04:31,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 19 [2024-12-02 08:04:31,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641126721] [2024-12-02 08:04:31,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:31,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:04:31,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:31,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:04:31,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-12-02 08:04:31,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:31,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 187 transitions, 3249 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:31,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:31,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:31,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:35,619 INFO L124 PetriNetUnfolderBase]: 17806/26305 cut-off events. [2024-12-02 08:04:35,619 INFO L125 PetriNetUnfolderBase]: For 227638/227638 co-relation queries the response was YES. [2024-12-02 08:04:35,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114260 conditions, 26305 events. 17806/26305 cut-off events. For 227638/227638 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 170412 event pairs, 4698 based on Foata normal form. 13/26318 useless extension candidates. Maximal degree in co-relation 114197. Up to 8900 conditions per place. [2024-12-02 08:04:35,825 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 213 selfloop transitions, 91 changer transitions 1/306 dead transitions. [2024-12-02 08:04:35,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 306 transitions, 4922 flow [2024-12-02 08:04:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-12-02 08:04:35,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-12-02 08:04:35,827 INFO L175 Difference]: Start difference. First operand has 146 places, 187 transitions, 3249 flow. Second operand 7 states and 147 transitions. [2024-12-02 08:04:35,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 306 transitions, 4922 flow [2024-12-02 08:04:36,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 306 transitions, 4890 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-12-02 08:04:36,757 INFO L231 Difference]: Finished difference. Result has 154 places, 189 transitions, 3447 flow [2024-12-02 08:04:36,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3447, PETRI_PLACES=154, PETRI_TRANSITIONS=189} [2024-12-02 08:04:36,758 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 119 predicate places. [2024-12-02 08:04:36,758 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 189 transitions, 3447 flow [2024-12-02 08:04:36,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:36,758 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:36,758 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:36,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:04:36,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:04:36,959 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:36,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:36,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2143864996, now seen corresponding path program 3 times [2024-12-02 08:04:36,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:36,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345024743] [2024-12-02 08:04:36,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:04:36,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:36,977 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 08:04:36,977 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:37,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:37,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345024743] [2024-12-02 08:04:37,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345024743] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:37,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:37,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:04:37,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339717486] [2024-12-02 08:04:37,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:37,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:04:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:37,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:04:37,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:04:37,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:37,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 189 transitions, 3447 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:37,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:37,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:37,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:41,339 INFO L124 PetriNetUnfolderBase]: 18238/26943 cut-off events. [2024-12-02 08:04:41,339 INFO L125 PetriNetUnfolderBase]: For 254104/254104 co-relation queries the response was YES. [2024-12-02 08:04:41,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119363 conditions, 26943 events. 18238/26943 cut-off events. For 254104/254104 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 174542 event pairs, 6088 based on Foata normal form. 8/26951 useless extension candidates. Maximal degree in co-relation 119297. Up to 13230 conditions per place. [2024-12-02 08:04:41,586 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 249 selfloop transitions, 84 changer transitions 1/335 dead transitions. [2024-12-02 08:04:41,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 335 transitions, 5861 flow [2024-12-02 08:04:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:41,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-12-02 08:04:41,587 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-12-02 08:04:41,587 INFO L175 Difference]: Start difference. First operand has 154 places, 189 transitions, 3447 flow. Second operand 7 states and 142 transitions. [2024-12-02 08:04:41,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 335 transitions, 5861 flow [2024-12-02 08:04:42,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 335 transitions, 5624 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-12-02 08:04:42,594 INFO L231 Difference]: Finished difference. Result has 161 places, 214 transitions, 4073 flow [2024-12-02 08:04:42,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3274, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4073, PETRI_PLACES=161, PETRI_TRANSITIONS=214} [2024-12-02 08:04:42,594 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 126 predicate places. [2024-12-02 08:04:42,594 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 214 transitions, 4073 flow [2024-12-02 08:04:42,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:42,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:42,595 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:42,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 08:04:42,595 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:42,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:42,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1202691838, now seen corresponding path program 6 times [2024-12-02 08:04:42,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:42,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271690892] [2024-12-02 08:04:42,595 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 08:04:42,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:42,622 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 08:04:42,622 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:42,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:42,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271690892] [2024-12-02 08:04:42,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271690892] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:42,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:42,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 08:04:42,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375840180] [2024-12-02 08:04:42,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:42,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 08:04:42,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:42,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 08:04:42,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:04:42,974 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:42,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 214 transitions, 4073 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:42,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:42,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:42,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:47,297 INFO L124 PetriNetUnfolderBase]: 18939/28096 cut-off events. [2024-12-02 08:04:47,298 INFO L125 PetriNetUnfolderBase]: For 277239/277239 co-relation queries the response was YES. [2024-12-02 08:04:47,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126134 conditions, 28096 events. 18939/28096 cut-off events. For 277239/277239 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 184580 event pairs, 4473 based on Foata normal form. 13/28109 useless extension candidates. Maximal degree in co-relation 126063. Up to 8900 conditions per place. [2024-12-02 08:04:47,566 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 268 selfloop transitions, 80 changer transitions 1/350 dead transitions. [2024-12-02 08:04:47,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 350 transitions, 6277 flow [2024-12-02 08:04:47,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:47,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:47,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-12-02 08:04:47,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-12-02 08:04:47,567 INFO L175 Difference]: Start difference. First operand has 161 places, 214 transitions, 4073 flow. Second operand 7 states and 142 transitions. [2024-12-02 08:04:47,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 350 transitions, 6277 flow [2024-12-02 08:04:48,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 350 transitions, 6095 flow, removed 68 selfloop flow, removed 1 redundant places. [2024-12-02 08:04:48,794 INFO L231 Difference]: Finished difference. Result has 169 places, 217 transitions, 4177 flow [2024-12-02 08:04:48,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3913, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4177, PETRI_PLACES=169, PETRI_TRANSITIONS=217} [2024-12-02 08:04:48,794 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 134 predicate places. [2024-12-02 08:04:48,794 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 217 transitions, 4177 flow [2024-12-02 08:04:48,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:48,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:48,795 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:48,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 08:04:48,795 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:48,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1033442422, now seen corresponding path program 7 times [2024-12-02 08:04:48,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:48,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733420060] [2024-12-02 08:04:48,795 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 08:04:48,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:04:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:49,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:49,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733420060] [2024-12-02 08:04:49,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733420060] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:49,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:49,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:04:49,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739253933] [2024-12-02 08:04:49,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:49,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:04:49,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:49,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:04:49,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:04:49,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:49,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 217 transitions, 4177 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:49,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:49,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:49,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:04:53,525 INFO L124 PetriNetUnfolderBase]: 20175/30028 cut-off events. [2024-12-02 08:04:53,525 INFO L125 PetriNetUnfolderBase]: For 309012/309012 co-relation queries the response was YES. [2024-12-02 08:04:53,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135410 conditions, 30028 events. 20175/30028 cut-off events. For 309012/309012 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 200676 event pairs, 5462 based on Foata normal form. 8/30036 useless extension candidates. Maximal degree in co-relation 135336. Up to 12342 conditions per place. [2024-12-02 08:04:53,804 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 233 selfloop transitions, 109 changer transitions 1/344 dead transitions. [2024-12-02 08:04:53,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 344 transitions, 6192 flow [2024-12-02 08:04:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:04:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:04:53,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-12-02 08:04:53,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-12-02 08:04:53,805 INFO L175 Difference]: Start difference. First operand has 169 places, 217 transitions, 4177 flow. Second operand 7 states and 144 transitions. [2024-12-02 08:04:53,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 344 transitions, 6192 flow [2024-12-02 08:04:55,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 344 transitions, 6072 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-12-02 08:04:55,467 INFO L231 Difference]: Finished difference. Result has 176 places, 245 transitions, 5052 flow [2024-12-02 08:04:55,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5052, PETRI_PLACES=176, PETRI_TRANSITIONS=245} [2024-12-02 08:04:55,467 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 141 predicate places. [2024-12-02 08:04:55,468 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 245 transitions, 5052 flow [2024-12-02 08:04:55,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:55,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:04:55,468 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:55,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 08:04:55,468 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:04:55,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:55,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1487174946, now seen corresponding path program 4 times [2024-12-02 08:04:55,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:55,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627490699] [2024-12-02 08:04:55,468 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:04:55,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:55,488 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:04:55,488 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:04:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:04:55,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:55,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627490699] [2024-12-02 08:04:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627490699] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:04:55,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:04:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:04:55,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274630560] [2024-12-02 08:04:55,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:55,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:04:55,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:55,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:04:55,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:04:55,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:04:55,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 245 transitions, 5052 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:04:55,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:04:55,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:04:55,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:05:01,232 INFO L124 PetriNetUnfolderBase]: 20687/30827 cut-off events. [2024-12-02 08:05:01,232 INFO L125 PetriNetUnfolderBase]: For 350280/350280 co-relation queries the response was YES. [2024-12-02 08:05:01,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143092 conditions, 30827 events. 20687/30827 cut-off events. For 350280/350280 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 207370 event pairs, 7562 based on Foata normal form. 8/30835 useless extension candidates. Maximal degree in co-relation 143015. Up to 18346 conditions per place. [2024-12-02 08:05:01,503 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 219 selfloop transitions, 120 changer transitions 1/341 dead transitions. [2024-12-02 08:05:01,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 341 transitions, 6459 flow [2024-12-02 08:05:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:05:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:05:01,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-12-02 08:05:01,504 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-12-02 08:05:01,504 INFO L175 Difference]: Start difference. First operand has 176 places, 245 transitions, 5052 flow. Second operand 7 states and 144 transitions. [2024-12-02 08:05:01,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 341 transitions, 6459 flow [2024-12-02 08:05:02,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 341 transitions, 6349 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-12-02 08:05:03,002 INFO L231 Difference]: Finished difference. Result has 182 places, 252 transitions, 5361 flow [2024-12-02 08:05:03,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4944, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5361, PETRI_PLACES=182, PETRI_TRANSITIONS=252} [2024-12-02 08:05:03,002 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 147 predicate places. [2024-12-02 08:05:03,002 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 252 transitions, 5361 flow [2024-12-02 08:05:03,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:03,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:05:03,002 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:05:03,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 08:05:03,003 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:05:03,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:05:03,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1994018300, now seen corresponding path program 8 times [2024-12-02 08:05:03,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:05:03,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067425565] [2024-12-02 08:05:03,003 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:05:03,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:05:03,024 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:05:03,024 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:05:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:05:03,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:05:03,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067425565] [2024-12-02 08:05:03,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067425565] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:05:03,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:05:03,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:05:03,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247313591] [2024-12-02 08:05:03,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:05:03,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:05:03,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:05:03,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:05:03,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:05:03,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:05:03,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 252 transitions, 5361 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:03,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:05:03,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:05:03,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:05:08,930 INFO L124 PetriNetUnfolderBase]: 20666/30790 cut-off events. [2024-12-02 08:05:08,930 INFO L125 PetriNetUnfolderBase]: For 366276/366276 co-relation queries the response was YES. [2024-12-02 08:05:09,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144266 conditions, 30790 events. 20666/30790 cut-off events. For 366276/366276 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 207461 event pairs, 4939 based on Foata normal form. 13/30803 useless extension candidates. Maximal degree in co-relation 144187. Up to 9956 conditions per place. [2024-12-02 08:05:09,274 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 277 selfloop transitions, 94 changer transitions 1/373 dead transitions. [2024-12-02 08:05:09,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 373 transitions, 7362 flow [2024-12-02 08:05:09,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:05:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:05:09,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-12-02 08:05:09,275 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5515873015873016 [2024-12-02 08:05:09,275 INFO L175 Difference]: Start difference. First operand has 182 places, 252 transitions, 5361 flow. Second operand 7 states and 139 transitions. [2024-12-02 08:05:09,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 373 transitions, 7362 flow [2024-12-02 08:05:10,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 373 transitions, 7162 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-12-02 08:05:10,988 INFO L231 Difference]: Finished difference. Result has 189 places, 262 transitions, 5681 flow [2024-12-02 08:05:10,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5163, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5681, PETRI_PLACES=189, PETRI_TRANSITIONS=262} [2024-12-02 08:05:10,988 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 154 predicate places. [2024-12-02 08:05:10,988 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 262 transitions, 5681 flow [2024-12-02 08:05:10,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:10,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:05:10,988 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:05:10,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 08:05:10,989 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:05:10,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:05:10,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1803253076, now seen corresponding path program 9 times [2024-12-02 08:05:10,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:05:10,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734246234] [2024-12-02 08:05:10,989 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:05:10,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:05:11,013 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 08:05:11,014 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:05:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:05:11,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:05:11,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734246234] [2024-12-02 08:05:11,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734246234] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:05:11,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:05:11,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:05:11,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727368300] [2024-12-02 08:05:11,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:05:11,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:05:11,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:05:11,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:05:11,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:05:11,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:05:11,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 262 transitions, 5681 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:11,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:05:11,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:05:11,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:05:16,677 INFO L124 PetriNetUnfolderBase]: 20687/30818 cut-off events. [2024-12-02 08:05:16,678 INFO L125 PetriNetUnfolderBase]: For 387344/387344 co-relation queries the response was YES. [2024-12-02 08:05:16,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144679 conditions, 30818 events. 20687/30818 cut-off events. For 387344/387344 co-relation queries the response was YES. Maximal size of possible extension queue 1249. Compared 207144 event pairs, 5707 based on Foata normal form. 26/30844 useless extension candidates. Maximal degree in co-relation 144597. Up to 13109 conditions per place. [2024-12-02 08:05:16,975 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 237 selfloop transitions, 123 changer transitions 1/362 dead transitions. [2024-12-02 08:05:16,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 362 transitions, 7192 flow [2024-12-02 08:05:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:05:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:05:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-12-02 08:05:16,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-12-02 08:05:16,976 INFO L175 Difference]: Start difference. First operand has 189 places, 262 transitions, 5681 flow. Second operand 7 states and 144 transitions. [2024-12-02 08:05:16,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 362 transitions, 7192 flow [2024-12-02 08:05:18,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 362 transitions, 7044 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-12-02 08:05:18,853 INFO L231 Difference]: Finished difference. Result has 194 places, 266 transitions, 5912 flow [2024-12-02 08:05:18,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5536, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5912, PETRI_PLACES=194, PETRI_TRANSITIONS=266} [2024-12-02 08:05:18,854 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 159 predicate places. [2024-12-02 08:05:18,854 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 266 transitions, 5912 flow [2024-12-02 08:05:18,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:18,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:05:18,854 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:05:18,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 08:05:18,854 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:05:18,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:05:18,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1696638108, now seen corresponding path program 5 times [2024-12-02 08:05:18,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:05:18,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685377824] [2024-12-02 08:05:18,854 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:05:18,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:05:18,883 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:05:18,883 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:05:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:05:19,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:05:19,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685377824] [2024-12-02 08:05:19,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685377824] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:05:19,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358060715] [2024-12-02 08:05:19,179 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:05:19,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:05:19,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:05:19,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:05:19,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:05:19,279 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:05:19,279 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:05:19,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 08:05:19,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:05:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:05:19,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:05:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:05:19,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358060715] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:05:19,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:05:19,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2024-12-02 08:05:19,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498915155] [2024-12-02 08:05:19,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:05:19,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:05:19,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:05:19,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:05:19,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:05:19,767 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:05:19,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 266 transitions, 5912 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:19,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:05:19,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:05:19,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:05:25,670 INFO L124 PetriNetUnfolderBase]: 20759/30945 cut-off events. [2024-12-02 08:05:25,670 INFO L125 PetriNetUnfolderBase]: For 394562/394562 co-relation queries the response was YES. [2024-12-02 08:05:25,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146409 conditions, 30945 events. 20759/30945 cut-off events. For 394562/394562 co-relation queries the response was YES. Maximal size of possible extension queue 1258. Compared 208307 event pairs, 7597 based on Foata normal form. 12/30957 useless extension candidates. Maximal degree in co-relation 146325. Up to 18352 conditions per place. [2024-12-02 08:05:26,034 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 227 selfloop transitions, 127 changer transitions 1/356 dead transitions. [2024-12-02 08:05:26,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 356 transitions, 7224 flow [2024-12-02 08:05:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:05:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:05:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-12-02 08:05:26,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-12-02 08:05:26,035 INFO L175 Difference]: Start difference. First operand has 194 places, 266 transitions, 5912 flow. Second operand 7 states and 144 transitions. [2024-12-02 08:05:26,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 356 transitions, 7224 flow [2024-12-02 08:05:27,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 356 transitions, 7006 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-12-02 08:05:27,902 INFO L231 Difference]: Finished difference. Result has 198 places, 268 transitions, 6015 flow [2024-12-02 08:05:27,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5694, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6015, PETRI_PLACES=198, PETRI_TRANSITIONS=268} [2024-12-02 08:05:27,903 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 163 predicate places. [2024-12-02 08:05:27,903 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 268 transitions, 6015 flow [2024-12-02 08:05:27,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:27,903 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:05:27,903 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:05:27,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:05:28,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 08:05:28,104 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:05:28,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:05:28,104 INFO L85 PathProgramCache]: Analyzing trace with hash 751114050, now seen corresponding path program 10 times [2024-12-02 08:05:28,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:05:28,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239151783] [2024-12-02 08:05:28,104 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:05:28,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:05:28,115 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:05:28,115 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:05:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:05:28,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:05:28,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239151783] [2024-12-02 08:05:28,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239151783] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:05:28,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:05:28,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:05:28,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955559541] [2024-12-02 08:05:28,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:05:28,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:05:28,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:05:28,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:05:28,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:05:28,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:05:28,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 268 transitions, 6015 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:28,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:05:28,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:05:28,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:05:33,239 INFO L124 PetriNetUnfolderBase]: 20748/30918 cut-off events. [2024-12-02 08:05:33,239 INFO L125 PetriNetUnfolderBase]: For 399430/399430 co-relation queries the response was YES. [2024-12-02 08:05:33,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146786 conditions, 30918 events. 20748/30918 cut-off events. For 399430/399430 co-relation queries the response was YES. Maximal size of possible extension queue 1266. Compared 208465 event pairs, 5105 based on Foata normal form. 3/30921 useless extension candidates. Maximal degree in co-relation 146700. Up to 9956 conditions per place. [2024-12-02 08:05:33,595 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 272 selfloop transitions, 93 changer transitions 6/372 dead transitions. [2024-12-02 08:05:33,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 372 transitions, 7711 flow [2024-12-02 08:05:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:05:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:05:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-12-02 08:05:33,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5198412698412699 [2024-12-02 08:05:33,597 INFO L175 Difference]: Start difference. First operand has 198 places, 268 transitions, 6015 flow. Second operand 7 states and 131 transitions. [2024-12-02 08:05:33,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 372 transitions, 7711 flow [2024-12-02 08:05:35,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 372 transitions, 7464 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-12-02 08:05:35,624 INFO L231 Difference]: Finished difference. Result has 201 places, 267 transitions, 5943 flow [2024-12-02 08:05:35,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5738, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5943, PETRI_PLACES=201, PETRI_TRANSITIONS=267} [2024-12-02 08:05:35,624 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 166 predicate places. [2024-12-02 08:05:35,624 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 267 transitions, 5943 flow [2024-12-02 08:05:35,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:35,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:05:35,624 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:05:35,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 08:05:35,624 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:05:35,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:05:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2009189404, now seen corresponding path program 11 times [2024-12-02 08:05:35,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:05:35,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607288939] [2024-12-02 08:05:35,625 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:05:35,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:05:35,649 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:05:35,649 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:05:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:05:35,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:05:35,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607288939] [2024-12-02 08:05:35,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607288939] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:05:35,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791989086] [2024-12-02 08:05:35,942 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:05:35,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:05:35,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:05:35,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:05:35,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:05:36,041 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:05:36,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:05:36,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 08:05:36,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:05:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:05:36,332 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:05:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:05:36,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791989086] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:05:36,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:05:36,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2024-12-02 08:05:36,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011422102] [2024-12-02 08:05:36,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:05:36,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:05:36,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:05:36,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:05:36,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:05:36,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:05:36,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 267 transitions, 5943 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:36,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:05:36,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:05:36,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:05:42,246 INFO L124 PetriNetUnfolderBase]: 20800/31009 cut-off events. [2024-12-02 08:05:42,246 INFO L125 PetriNetUnfolderBase]: For 399003/399003 co-relation queries the response was YES. [2024-12-02 08:05:42,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146995 conditions, 31009 events. 20800/31009 cut-off events. For 399003/399003 co-relation queries the response was YES. Maximal size of possible extension queue 1256. Compared 208915 event pairs, 6169 based on Foata normal form. 8/31017 useless extension candidates. Maximal degree in co-relation 146908. Up to 13235 conditions per place. [2024-12-02 08:05:42,545 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 244 selfloop transitions, 122 changer transitions 1/368 dead transitions. [2024-12-02 08:05:42,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 368 transitions, 7500 flow [2024-12-02 08:05:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:05:42,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:05:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-12-02 08:05:42,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-12-02 08:05:42,547 INFO L175 Difference]: Start difference. First operand has 201 places, 267 transitions, 5943 flow. Second operand 7 states and 140 transitions. [2024-12-02 08:05:42,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 368 transitions, 7500 flow [2024-12-02 08:05:44,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 368 transitions, 7300 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-12-02 08:05:44,340 INFO L231 Difference]: Finished difference. Result has 204 places, 274 transitions, 6184 flow [2024-12-02 08:05:44,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5755, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6184, PETRI_PLACES=204, PETRI_TRANSITIONS=274} [2024-12-02 08:05:44,340 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 169 predicate places. [2024-12-02 08:05:44,340 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 274 transitions, 6184 flow [2024-12-02 08:05:44,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:44,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:05:44,341 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:05:44,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 08:05:44,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 08:05:44,541 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:05:44,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:05:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1186436444, now seen corresponding path program 6 times [2024-12-02 08:05:44,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:05:44,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795230533] [2024-12-02 08:05:44,542 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 08:05:44,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:05:44,560 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 08:05:44,560 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:05:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:05:44,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:05:44,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795230533] [2024-12-02 08:05:44,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795230533] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:05:44,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:05:44,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:05:44,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363964345] [2024-12-02 08:05:44,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:05:44,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:05:44,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:05:44,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:05:44,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:05:44,772 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:05:44,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 274 transitions, 6184 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:44,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:05:44,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:05:44,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:05:50,128 INFO L124 PetriNetUnfolderBase]: 20796/31005 cut-off events. [2024-12-02 08:05:50,128 INFO L125 PetriNetUnfolderBase]: For 406979/406979 co-relation queries the response was YES. [2024-12-02 08:05:50,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148576 conditions, 31005 events. 20796/31005 cut-off events. For 406979/406979 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 209019 event pairs, 7629 based on Foata normal form. 4/31009 useless extension candidates. Maximal degree in co-relation 148486. Up to 18422 conditions per place. [2024-12-02 08:05:50,477 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 220 selfloop transitions, 137 changer transitions 8/366 dead transitions. [2024-12-02 08:05:50,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 366 transitions, 7679 flow [2024-12-02 08:05:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:05:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:05:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-12-02 08:05:50,479 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-12-02 08:05:50,479 INFO L175 Difference]: Start difference. First operand has 204 places, 274 transitions, 6184 flow. Second operand 7 states and 130 transitions. [2024-12-02 08:05:50,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 366 transitions, 7679 flow [2024-12-02 08:05:52,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 366 transitions, 7480 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-12-02 08:05:52,559 INFO L231 Difference]: Finished difference. Result has 208 places, 284 transitions, 6537 flow [2024-12-02 08:05:52,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5956, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6537, PETRI_PLACES=208, PETRI_TRANSITIONS=284} [2024-12-02 08:05:52,559 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 173 predicate places. [2024-12-02 08:05:52,559 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 284 transitions, 6537 flow [2024-12-02 08:05:52,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:52,560 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:05:52,560 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:05:52,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 08:05:52,560 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:05:52,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:05:52,560 INFO L85 PathProgramCache]: Analyzing trace with hash 391548434, now seen corresponding path program 12 times [2024-12-02 08:05:52,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:05:52,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210138217] [2024-12-02 08:05:52,561 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 08:05:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:05:52,576 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 08:05:52,577 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:05:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:05:52,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:05:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210138217] [2024-12-02 08:05:52,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210138217] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:05:52,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:05:52,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:05:52,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063359810] [2024-12-02 08:05:52,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:05:52,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:05:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:05:52,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:05:52,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:05:52,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:05:52,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 284 transitions, 6537 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:05:52,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:05:52,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:05:52,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:05:58,151 INFO L124 PetriNetUnfolderBase]: 20758/30923 cut-off events. [2024-12-02 08:05:58,151 INFO L125 PetriNetUnfolderBase]: For 428182/428182 co-relation queries the response was YES. [2024-12-02 08:05:58,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151118 conditions, 30923 events. 20758/30923 cut-off events. For 428182/428182 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 208087 event pairs, 5887 based on Foata normal form. 13/30936 useless extension candidates. Maximal degree in co-relation 151027. Up to 13231 conditions per place. [2024-12-02 08:05:58,505 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 248 selfloop transitions, 133 changer transitions 1/383 dead transitions. [2024-12-02 08:05:58,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 383 transitions, 8194 flow [2024-12-02 08:05:58,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:05:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:05:58,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-12-02 08:05:58,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-12-02 08:05:58,506 INFO L175 Difference]: Start difference. First operand has 208 places, 284 transitions, 6537 flow. Second operand 7 states and 140 transitions. [2024-12-02 08:05:58,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 383 transitions, 8194 flow [2024-12-02 08:06:00,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 383 transitions, 8010 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-12-02 08:06:00,686 INFO L231 Difference]: Finished difference. Result has 214 places, 293 transitions, 6953 flow [2024-12-02 08:06:00,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6361, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6953, PETRI_PLACES=214, PETRI_TRANSITIONS=293} [2024-12-02 08:06:00,686 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 179 predicate places. [2024-12-02 08:06:00,687 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 293 transitions, 6953 flow [2024-12-02 08:06:00,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:00,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:06:00,687 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:06:00,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 08:06:00,687 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:06:00,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:06:00,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1871169852, now seen corresponding path program 7 times [2024-12-02 08:06:00,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:06:00,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653512150] [2024-12-02 08:06:00,687 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 08:06:00,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:06:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:06:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:06:00,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:06:00,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653512150] [2024-12-02 08:06:00,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653512150] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:06:00,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:06:00,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:06:00,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815108005] [2024-12-02 08:06:00,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:06:00,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:06:00,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:06:00,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:06:00,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:06:00,892 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:06:00,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 293 transitions, 6953 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:00,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:06:00,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:06:00,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:06:06,931 INFO L124 PetriNetUnfolderBase]: 20830/31050 cut-off events. [2024-12-02 08:06:06,932 INFO L125 PetriNetUnfolderBase]: For 438488/438488 co-relation queries the response was YES. [2024-12-02 08:06:07,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151889 conditions, 31050 events. 20830/31050 cut-off events. For 438488/438488 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 209461 event pairs, 7307 based on Foata normal form. 12/31062 useless extension candidates. Maximal degree in co-relation 151795. Up to 18375 conditions per place. [2024-12-02 08:06:07,301 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 249 selfloop transitions, 131 changer transitions 2/383 dead transitions. [2024-12-02 08:06:07,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 383 transitions, 8343 flow [2024-12-02 08:06:07,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:06:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:06:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-12-02 08:06:07,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-12-02 08:06:07,303 INFO L175 Difference]: Start difference. First operand has 214 places, 293 transitions, 6953 flow. Second operand 7 states and 138 transitions. [2024-12-02 08:06:07,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 383 transitions, 8343 flow [2024-12-02 08:06:09,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 383 transitions, 8206 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-12-02 08:06:09,547 INFO L231 Difference]: Finished difference. Result has 219 places, 294 transitions, 7110 flow [2024-12-02 08:06:09,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6818, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7110, PETRI_PLACES=219, PETRI_TRANSITIONS=294} [2024-12-02 08:06:09,547 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 184 predicate places. [2024-12-02 08:06:09,548 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 294 transitions, 7110 flow [2024-12-02 08:06:09,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:09,548 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:06:09,548 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:06:09,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 08:06:09,548 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:06:09,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:06:09,548 INFO L85 PathProgramCache]: Analyzing trace with hash 27559268, now seen corresponding path program 13 times [2024-12-02 08:06:09,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:06:09,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773662492] [2024-12-02 08:06:09,549 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 08:06:09,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:06:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:06:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:06:09,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:06:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773662492] [2024-12-02 08:06:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773662492] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:06:09,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:06:09,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:06:09,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101395545] [2024-12-02 08:06:09,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:06:09,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:06:09,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:06:09,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:06:09,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:06:09,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:06:09,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 294 transitions, 7110 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:09,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:06:09,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:06:09,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:06:15,036 INFO L124 PetriNetUnfolderBase]: 20833/31062 cut-off events. [2024-12-02 08:06:15,036 INFO L125 PetriNetUnfolderBase]: For 452453/452453 co-relation queries the response was YES. [2024-12-02 08:06:15,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152765 conditions, 31062 events. 20833/31062 cut-off events. For 452453/452453 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 209631 event pairs, 6167 based on Foata normal form. 3/31065 useless extension candidates. Maximal degree in co-relation 152670. Up to 13357 conditions per place. [2024-12-02 08:06:15,369 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 242 selfloop transitions, 128 changer transitions 6/377 dead transitions. [2024-12-02 08:06:15,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 377 transitions, 8466 flow [2024-12-02 08:06:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:06:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:06:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-12-02 08:06:15,371 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-12-02 08:06:15,371 INFO L175 Difference]: Start difference. First operand has 219 places, 294 transitions, 7110 flow. Second operand 7 states and 132 transitions. [2024-12-02 08:06:15,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 377 transitions, 8466 flow [2024-12-02 08:06:17,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 377 transitions, 8233 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 08:06:17,414 INFO L231 Difference]: Finished difference. Result has 224 places, 294 transitions, 7150 flow [2024-12-02 08:06:17,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6878, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7150, PETRI_PLACES=224, PETRI_TRANSITIONS=294} [2024-12-02 08:06:17,415 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 189 predicate places. [2024-12-02 08:06:17,415 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 294 transitions, 7150 flow [2024-12-02 08:06:17,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:17,415 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:06:17,415 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:06:17,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 08:06:17,416 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:06:17,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:06:17,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1135997350, now seen corresponding path program 8 times [2024-12-02 08:06:17,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:06:17,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235826174] [2024-12-02 08:06:17,416 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:06:17,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:06:17,433 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:06:17,433 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:06:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:06:17,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:06:17,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235826174] [2024-12-02 08:06:17,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235826174] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:06:17,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:06:17,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:06:17,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670363478] [2024-12-02 08:06:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:06:17,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:06:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:06:17,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:06:17,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:06:17,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:06:17,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 294 transitions, 7150 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:17,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:06:17,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:06:17,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:06:23,890 INFO L124 PetriNetUnfolderBase]: 20820/31040 cut-off events. [2024-12-02 08:06:23,890 INFO L125 PetriNetUnfolderBase]: For 453314/453314 co-relation queries the response was YES. [2024-12-02 08:06:24,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152651 conditions, 31040 events. 20820/31040 cut-off events. For 453314/453314 co-relation queries the response was YES. Maximal size of possible extension queue 1267. Compared 209518 event pairs, 7302 based on Foata normal form. 4/31044 useless extension candidates. Maximal degree in co-relation 152554. Up to 18375 conditions per place. [2024-12-02 08:06:24,284 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 244 selfloop transitions, 128 changer transitions 7/380 dead transitions. [2024-12-02 08:06:24,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 380 transitions, 8460 flow [2024-12-02 08:06:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:06:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:06:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-12-02 08:06:24,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5317460317460317 [2024-12-02 08:06:24,285 INFO L175 Difference]: Start difference. First operand has 224 places, 294 transitions, 7150 flow. Second operand 7 states and 134 transitions. [2024-12-02 08:06:24,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 380 transitions, 8460 flow [2024-12-02 08:06:26,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 380 transitions, 8202 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-12-02 08:06:26,531 INFO L231 Difference]: Finished difference. Result has 224 places, 293 transitions, 7109 flow [2024-12-02 08:06:26,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6847, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7109, PETRI_PLACES=224, PETRI_TRANSITIONS=293} [2024-12-02 08:06:26,531 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 189 predicate places. [2024-12-02 08:06:26,531 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 293 transitions, 7109 flow [2024-12-02 08:06:26,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:26,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:06:26,532 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:06:26,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 08:06:26,532 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:06:26,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:06:26,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2052944332, now seen corresponding path program 14 times [2024-12-02 08:06:26,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:06:26,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753716367] [2024-12-02 08:06:26,532 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:06:26,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:06:26,549 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:06:26,549 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:06:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:06:26,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:06:26,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753716367] [2024-12-02 08:06:26,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753716367] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:06:26,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:06:26,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 08:06:26,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977405665] [2024-12-02 08:06:26,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:06:26,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 08:06:26,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:06:26,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 08:06:26,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:06:26,820 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:06:26,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 293 transitions, 7109 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:26,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:06:26,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:06:26,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:06:32,272 INFO L124 PetriNetUnfolderBase]: 20795/30987 cut-off events. [2024-12-02 08:06:32,272 INFO L125 PetriNetUnfolderBase]: For 454294/454294 co-relation queries the response was YES. [2024-12-02 08:06:32,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152762 conditions, 30987 events. 20795/30987 cut-off events. For 454294/454294 co-relation queries the response was YES. Maximal size of possible extension queue 1257. Compared 208701 event pairs, 5967 based on Foata normal form. 3/30990 useless extension candidates. Maximal degree in co-relation 152665. Up to 13353 conditions per place. [2024-12-02 08:06:32,665 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 240 selfloop transitions, 128 changer transitions 6/375 dead transitions. [2024-12-02 08:06:32,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 375 transitions, 8417 flow [2024-12-02 08:06:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:06:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:06:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-12-02 08:06:32,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-12-02 08:06:32,666 INFO L175 Difference]: Start difference. First operand has 224 places, 293 transitions, 7109 flow. Second operand 7 states and 132 transitions. [2024-12-02 08:06:32,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 375 transitions, 8417 flow [2024-12-02 08:06:34,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 375 transitions, 8155 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-12-02 08:06:34,972 INFO L231 Difference]: Finished difference. Result has 225 places, 292 transitions, 7080 flow [2024-12-02 08:06:34,972 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6807, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7080, PETRI_PLACES=225, PETRI_TRANSITIONS=292} [2024-12-02 08:06:34,972 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 190 predicate places. [2024-12-02 08:06:34,972 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 292 transitions, 7080 flow [2024-12-02 08:06:34,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:34,972 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:06:34,972 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:06:34,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 08:06:34,973 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:06:34,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:06:34,973 INFO L85 PathProgramCache]: Analyzing trace with hash -573616496, now seen corresponding path program 9 times [2024-12-02 08:06:34,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:06:34,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389144417] [2024-12-02 08:06:34,973 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:06:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:06:34,987 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 08:06:34,987 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:06:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:06:35,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:06:35,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389144417] [2024-12-02 08:06:35,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389144417] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:06:35,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:06:35,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:06:35,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027853213] [2024-12-02 08:06:35,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:06:35,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:06:35,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:06:35,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:06:35,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:06:35,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:06:35,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 292 transitions, 7080 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:35,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:06:35,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:06:35,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:06:40,537 INFO L124 PetriNetUnfolderBase]: 20767/30931 cut-off events. [2024-12-02 08:06:40,537 INFO L125 PetriNetUnfolderBase]: For 452773/452773 co-relation queries the response was YES. [2024-12-02 08:06:40,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152198 conditions, 30931 events. 20767/30931 cut-off events. For 452773/452773 co-relation queries the response was YES. Maximal size of possible extension queue 1253. Compared 208151 event pairs, 7259 based on Foata normal form. 4/30935 useless extension candidates. Maximal degree in co-relation 152100. Up to 18349 conditions per place. [2024-12-02 08:06:40,943 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 238 selfloop transitions, 133 changer transitions 8/380 dead transitions. [2024-12-02 08:06:40,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 380 transitions, 8421 flow [2024-12-02 08:06:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:06:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:06:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-12-02 08:06:40,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-12-02 08:06:40,945 INFO L175 Difference]: Start difference. First operand has 225 places, 292 transitions, 7080 flow. Second operand 7 states and 133 transitions. [2024-12-02 08:06:40,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 380 transitions, 8421 flow [2024-12-02 08:06:43,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 380 transitions, 8153 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-12-02 08:06:43,406 INFO L231 Difference]: Finished difference. Result has 225 places, 290 transitions, 6978 flow [2024-12-02 08:06:43,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6762, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6978, PETRI_PLACES=225, PETRI_TRANSITIONS=290} [2024-12-02 08:06:43,407 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 190 predicate places. [2024-12-02 08:06:43,407 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 290 transitions, 6978 flow [2024-12-02 08:06:43,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:43,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:06:43,407 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:06:43,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 08:06:43,407 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:06:43,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:06:43,408 INFO L85 PathProgramCache]: Analyzing trace with hash 708862488, now seen corresponding path program 10 times [2024-12-02 08:06:43,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:06:43,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014480286] [2024-12-02 08:06:43,408 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:06:43,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:06:43,423 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:06:43,423 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:06:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:06:43,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:06:43,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014480286] [2024-12-02 08:06:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014480286] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:06:43,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:06:43,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:06:43,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760532032] [2024-12-02 08:06:43,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:06:43,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:06:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:06:43,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:06:43,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:06:43,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:06:43,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 290 transitions, 6978 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:43,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:06:43,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:06:43,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:06:49,290 INFO L124 PetriNetUnfolderBase]: 20878/31154 cut-off events. [2024-12-02 08:06:49,290 INFO L125 PetriNetUnfolderBase]: For 455585/455585 co-relation queries the response was YES. [2024-12-02 08:06:49,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153229 conditions, 31154 events. 20878/31154 cut-off events. For 455585/455585 co-relation queries the response was YES. Maximal size of possible extension queue 1273. Compared 210432 event pairs, 7561 based on Foata normal form. 8/31162 useless extension candidates. Maximal degree in co-relation 153131. Up to 18349 conditions per place. [2024-12-02 08:06:49,628 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 242 selfloop transitions, 135 changer transitions 1/379 dead transitions. [2024-12-02 08:06:49,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 379 transitions, 8306 flow [2024-12-02 08:06:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:06:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:06:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-12-02 08:06:49,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-12-02 08:06:49,629 INFO L175 Difference]: Start difference. First operand has 225 places, 290 transitions, 6978 flow. Second operand 7 states and 142 transitions. [2024-12-02 08:06:49,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 379 transitions, 8306 flow [2024-12-02 08:06:51,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 379 transitions, 8036 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-12-02 08:06:51,675 INFO L231 Difference]: Finished difference. Result has 227 places, 294 transitions, 7071 flow [2024-12-02 08:06:51,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6716, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7071, PETRI_PLACES=227, PETRI_TRANSITIONS=294} [2024-12-02 08:06:51,676 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 192 predicate places. [2024-12-02 08:06:51,676 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 294 transitions, 7071 flow [2024-12-02 08:06:51,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:51,676 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:06:51,676 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:06:51,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 08:06:51,676 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:06:51,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:06:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1870774570, now seen corresponding path program 11 times [2024-12-02 08:06:51,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:06:51,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932648012] [2024-12-02 08:06:51,677 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:06:51,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:06:51,695 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:06:51,695 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:06:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:06:51,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:06:51,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932648012] [2024-12-02 08:06:51,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932648012] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:06:51,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509496866] [2024-12-02 08:06:51,942 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:06:51,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:06:51,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:06:51,943 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:06:51,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:06:52,054 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:06:52,054 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:06:52,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 08:06:52,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:06:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:06:52,385 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:06:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:06:52,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509496866] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:06:52,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:06:52,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2024-12-02 08:06:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228900197] [2024-12-02 08:06:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:06:52,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:06:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:06:52,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:06:52,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:06:52,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:06:52,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 294 transitions, 7071 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:06:52,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:06:52,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:06:52,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:06:58,547 INFO L124 PetriNetUnfolderBase]: 20914/31207 cut-off events. [2024-12-02 08:06:58,547 INFO L125 PetriNetUnfolderBase]: For 457817/457817 co-relation queries the response was YES. [2024-12-02 08:06:58,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154261 conditions, 31207 events. 20914/31207 cut-off events. For 457817/457817 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 210861 event pairs, 7537 based on Foata normal form. 12/31219 useless extension candidates. Maximal degree in co-relation 154161. Up to 18361 conditions per place. [2024-12-02 08:06:58,972 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 241 selfloop transitions, 136 changer transitions 1/379 dead transitions. [2024-12-02 08:06:58,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 379 transitions, 8317 flow [2024-12-02 08:06:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:06:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:06:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-12-02 08:06:58,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-12-02 08:06:58,973 INFO L175 Difference]: Start difference. First operand has 227 places, 294 transitions, 7071 flow. Second operand 7 states and 142 transitions. [2024-12-02 08:06:58,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 379 transitions, 8317 flow [2024-12-02 08:07:01,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 379 transitions, 8077 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-12-02 08:07:01,165 INFO L231 Difference]: Finished difference. Result has 229 places, 295 transitions, 7124 flow [2024-12-02 08:07:01,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6805, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7124, PETRI_PLACES=229, PETRI_TRANSITIONS=295} [2024-12-02 08:07:01,166 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 194 predicate places. [2024-12-02 08:07:01,166 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 295 transitions, 7124 flow [2024-12-02 08:07:01,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:01,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:07:01,166 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:07:01,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 08:07:01,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 08:07:01,367 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:07:01,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:07:01,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1734922282, now seen corresponding path program 12 times [2024-12-02 08:07:01,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:07:01,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470650107] [2024-12-02 08:07:01,367 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 08:07:01,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:07:01,388 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 08:07:01,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:07:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:07:01,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:07:01,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470650107] [2024-12-02 08:07:01,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470650107] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:07:01,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:07:01,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:07:01,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112962771] [2024-12-02 08:07:01,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:07:01,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:07:01,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:07:01,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:07:01,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:07:01,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:07:01,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 295 transitions, 7124 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:01,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:07:01,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:07:01,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:07:07,419 INFO L124 PetriNetUnfolderBase]: 20898/31172 cut-off events. [2024-12-02 08:07:07,419 INFO L125 PetriNetUnfolderBase]: For 464150/464150 co-relation queries the response was YES. [2024-12-02 08:07:07,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155249 conditions, 31172 events. 20898/31172 cut-off events. For 464150/464150 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 210478 event pairs, 7582 based on Foata normal form. 4/31176 useless extension candidates. Maximal degree in co-relation 155150. Up to 18361 conditions per place. [2024-12-02 08:07:07,800 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 234 selfloop transitions, 132 changer transitions 7/374 dead transitions. [2024-12-02 08:07:07,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 374 transitions, 8346 flow [2024-12-02 08:07:07,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:07:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:07:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-12-02 08:07:07,801 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-12-02 08:07:07,801 INFO L175 Difference]: Start difference. First operand has 229 places, 295 transitions, 7124 flow. Second operand 7 states and 135 transitions. [2024-12-02 08:07:07,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 374 transitions, 8346 flow [2024-12-02 08:07:09,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 374 transitions, 8114 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-12-02 08:07:09,961 INFO L231 Difference]: Finished difference. Result has 233 places, 294 transitions, 7134 flow [2024-12-02 08:07:09,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6892, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7134, PETRI_PLACES=233, PETRI_TRANSITIONS=294} [2024-12-02 08:07:09,962 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 198 predicate places. [2024-12-02 08:07:09,962 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 294 transitions, 7134 flow [2024-12-02 08:07:09,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:09,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:07:09,962 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:07:09,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 08:07:09,962 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:07:09,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:07:09,963 INFO L85 PathProgramCache]: Analyzing trace with hash -510417256, now seen corresponding path program 13 times [2024-12-02 08:07:09,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:07:09,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672618994] [2024-12-02 08:07:09,963 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 08:07:09,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:07:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:07:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:07:10,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:07:10,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672618994] [2024-12-02 08:07:10,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672618994] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:07:10,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:07:10,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:07:10,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481235640] [2024-12-02 08:07:10,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:07:10,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:07:10,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:07:10,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:07:10,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:07:10,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:07:10,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 294 transitions, 7134 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:10,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:07:10,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:07:10,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:07:16,194 INFO L124 PetriNetUnfolderBase]: 20868/31111 cut-off events. [2024-12-02 08:07:16,194 INFO L125 PetriNetUnfolderBase]: For 466445/466445 co-relation queries the response was YES. [2024-12-02 08:07:16,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155017 conditions, 31111 events. 20868/31111 cut-off events. For 466445/466445 co-relation queries the response was YES. Maximal size of possible extension queue 1265. Compared 209837 event pairs, 7589 based on Foata normal form. 4/31115 useless extension candidates. Maximal degree in co-relation 154917. Up to 18361 conditions per place. [2024-12-02 08:07:16,545 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 235 selfloop transitions, 130 changer transitions 7/373 dead transitions. [2024-12-02 08:07:16,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 373 transitions, 8342 flow [2024-12-02 08:07:16,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:07:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:07:16,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-12-02 08:07:16,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-12-02 08:07:16,546 INFO L175 Difference]: Start difference. First operand has 233 places, 294 transitions, 7134 flow. Second operand 7 states and 135 transitions. [2024-12-02 08:07:16,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 373 transitions, 8342 flow [2024-12-02 08:07:18,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 373 transitions, 8071 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-12-02 08:07:18,592 INFO L231 Difference]: Finished difference. Result has 233 places, 293 transitions, 7090 flow [2024-12-02 08:07:18,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6822, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7090, PETRI_PLACES=233, PETRI_TRANSITIONS=293} [2024-12-02 08:07:18,593 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 198 predicate places. [2024-12-02 08:07:18,593 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 293 transitions, 7090 flow [2024-12-02 08:07:18,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:18,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:07:18,593 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:07:18,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 08:07:18,593 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:07:18,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:07:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash 936083868, now seen corresponding path program 14 times [2024-12-02 08:07:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:07:18,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521697407] [2024-12-02 08:07:18,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:07:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:07:18,609 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:07:18,609 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:07:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:07:18,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:07:18,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521697407] [2024-12-02 08:07:18,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521697407] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:07:18,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:07:18,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:07:18,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913253286] [2024-12-02 08:07:18,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:07:18,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:07:18,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:07:18,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:07:18,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:07:18,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:07:18,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 293 transitions, 7090 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:18,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:07:18,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:07:18,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:07:24,665 INFO L124 PetriNetUnfolderBase]: 20825/31018 cut-off events. [2024-12-02 08:07:24,665 INFO L125 PetriNetUnfolderBase]: For 465579/465579 co-relation queries the response was YES. [2024-12-02 08:07:24,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154599 conditions, 31018 events. 20825/31018 cut-off events. For 465579/465579 co-relation queries the response was YES. Maximal size of possible extension queue 1265. Compared 208778 event pairs, 7659 based on Foata normal form. 8/31026 useless extension candidates. Maximal degree in co-relation 154499. Up to 18361 conditions per place. [2024-12-02 08:07:25,024 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 226 selfloop transitions, 142 changer transitions 2/371 dead transitions. [2024-12-02 08:07:25,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 371 transitions, 8282 flow [2024-12-02 08:07:25,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:07:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:07:25,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-12-02 08:07:25,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-12-02 08:07:25,025 INFO L175 Difference]: Start difference. First operand has 233 places, 293 transitions, 7090 flow. Second operand 7 states and 135 transitions. [2024-12-02 08:07:25,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 371 transitions, 8282 flow [2024-12-02 08:07:27,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 371 transitions, 8004 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-12-02 08:07:27,131 INFO L231 Difference]: Finished difference. Result has 230 places, 292 transitions, 7065 flow [2024-12-02 08:07:27,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6781, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7065, PETRI_PLACES=230, PETRI_TRANSITIONS=292} [2024-12-02 08:07:27,132 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 195 predicate places. [2024-12-02 08:07:27,132 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 292 transitions, 7065 flow [2024-12-02 08:07:27,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:27,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:07:27,132 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:07:27,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 08:07:27,132 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:07:27,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:07:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash -914704028, now seen corresponding path program 15 times [2024-12-02 08:07:27,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:07:27,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596407419] [2024-12-02 08:07:27,132 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:07:27,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:07:27,146 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 08:07:27,146 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:07:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:07:27,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:07:27,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596407419] [2024-12-02 08:07:27,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596407419] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:07:27,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:07:27,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:07:27,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753317133] [2024-12-02 08:07:27,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:07:27,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:07:27,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:07:27,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:07:27,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:07:27,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:07:27,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 292 transitions, 7065 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:27,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:07:27,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:07:27,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:07:32,846 INFO L124 PetriNetUnfolderBase]: 20809/30983 cut-off events. [2024-12-02 08:07:32,846 INFO L125 PetriNetUnfolderBase]: For 466413/466413 co-relation queries the response was YES. [2024-12-02 08:07:33,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154787 conditions, 30983 events. 20809/30983 cut-off events. For 466413/466413 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 208338 event pairs, 7651 based on Foata normal form. 4/30987 useless extension candidates. Maximal degree in co-relation 154690. Up to 18361 conditions per place. [2024-12-02 08:07:33,234 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 221 selfloop transitions, 139 changer transitions 7/368 dead transitions. [2024-12-02 08:07:33,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 368 transitions, 8235 flow [2024-12-02 08:07:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:07:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:07:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-12-02 08:07:33,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5198412698412699 [2024-12-02 08:07:33,235 INFO L175 Difference]: Start difference. First operand has 230 places, 292 transitions, 7065 flow. Second operand 7 states and 131 transitions. [2024-12-02 08:07:33,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 368 transitions, 8235 flow [2024-12-02 08:07:35,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 368 transitions, 7991 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 08:07:35,424 INFO L231 Difference]: Finished difference. Result has 233 places, 290 transitions, 7025 flow [2024-12-02 08:07:35,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6778, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7025, PETRI_PLACES=233, PETRI_TRANSITIONS=290} [2024-12-02 08:07:35,425 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 198 predicate places. [2024-12-02 08:07:35,425 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 290 transitions, 7025 flow [2024-12-02 08:07:35,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:35,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:07:35,425 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:07:35,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 08:07:35,426 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:07:35,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:07:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash -85716850, now seen corresponding path program 15 times [2024-12-02 08:07:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:07:35,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023416755] [2024-12-02 08:07:35,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 08:07:35,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:07:35,441 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 08:07:35,441 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:07:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:07:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:07:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023416755] [2024-12-02 08:07:35,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023416755] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:07:35,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:07:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:07:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340146168] [2024-12-02 08:07:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:07:35,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:07:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:07:35,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:07:35,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:07:35,750 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:07:35,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 290 transitions, 7025 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:35,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:07:35,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:07:35,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:07:41,006 INFO L124 PetriNetUnfolderBase]: 20785/30947 cut-off events. [2024-12-02 08:07:41,006 INFO L125 PetriNetUnfolderBase]: For 465169/465169 co-relation queries the response was YES. [2024-12-02 08:07:41,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155039 conditions, 30947 events. 20785/30947 cut-off events. For 465169/465169 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 207584 event pairs, 7601 based on Foata normal form. 13/30960 useless extension candidates. Maximal degree in co-relation 154942. Up to 18930 conditions per place. [2024-12-02 08:07:41,353 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 260 selfloop transitions, 149 changer transitions 1/411 dead transitions. [2024-12-02 08:07:41,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 411 transitions, 9328 flow [2024-12-02 08:07:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:07:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:07:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-12-02 08:07:41,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-12-02 08:07:41,354 INFO L175 Difference]: Start difference. First operand has 233 places, 290 transitions, 7025 flow. Second operand 7 states and 135 transitions. [2024-12-02 08:07:41,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 411 transitions, 9328 flow [2024-12-02 08:07:43,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 411 transitions, 9010 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-12-02 08:07:43,316 INFO L231 Difference]: Finished difference. Result has 236 places, 309 transitions, 7633 flow [2024-12-02 08:07:43,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6739, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7633, PETRI_PLACES=236, PETRI_TRANSITIONS=309} [2024-12-02 08:07:43,317 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 201 predicate places. [2024-12-02 08:07:43,317 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 309 transitions, 7633 flow [2024-12-02 08:07:43,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:43,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:07:43,317 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:07:43,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 08:07:43,317 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:07:43,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:07:43,318 INFO L85 PathProgramCache]: Analyzing trace with hash 936636950, now seen corresponding path program 16 times [2024-12-02 08:07:43,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:07:43,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667940243] [2024-12-02 08:07:43,318 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:07:43,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:07:43,331 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:07:43,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:07:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:07:43,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:07:43,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667940243] [2024-12-02 08:07:43,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667940243] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:07:43,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:07:43,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:07:43,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631166253] [2024-12-02 08:07:43,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:07:43,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:07:43,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:07:43,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:07:43,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:07:43,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:07:43,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 309 transitions, 7633 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:43,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:07:43,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:07:43,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:07:49,428 INFO L124 PetriNetUnfolderBase]: 21549/32218 cut-off events. [2024-12-02 08:07:49,428 INFO L125 PetriNetUnfolderBase]: For 488052/488052 co-relation queries the response was YES. [2024-12-02 08:07:49,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161898 conditions, 32218 events. 21549/32218 cut-off events. For 488052/488052 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 218491 event pairs, 6986 based on Foata normal form. 12/32230 useless extension candidates. Maximal degree in co-relation 161798. Up to 13819 conditions per place. [2024-12-02 08:07:49,810 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 287 selfloop transitions, 143 changer transitions 1/432 dead transitions. [2024-12-02 08:07:49,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 432 transitions, 9908 flow [2024-12-02 08:07:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:07:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:07:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-12-02 08:07:49,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5515873015873016 [2024-12-02 08:07:49,811 INFO L175 Difference]: Start difference. First operand has 236 places, 309 transitions, 7633 flow. Second operand 7 states and 139 transitions. [2024-12-02 08:07:49,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 432 transitions, 9908 flow [2024-12-02 08:07:52,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 432 transitions, 9584 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-12-02 08:07:52,376 INFO L231 Difference]: Finished difference. Result has 242 places, 316 transitions, 7860 flow [2024-12-02 08:07:52,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7315, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7860, PETRI_PLACES=242, PETRI_TRANSITIONS=316} [2024-12-02 08:07:52,377 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 207 predicate places. [2024-12-02 08:07:52,377 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 316 transitions, 7860 flow [2024-12-02 08:07:52,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:52,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:07:52,377 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:07:52,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 08:07:52,377 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:07:52,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:07:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash -367173378, now seen corresponding path program 17 times [2024-12-02 08:07:52,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:07:52,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346805265] [2024-12-02 08:07:52,378 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:07:52,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:07:52,394 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:07:52,394 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:07:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:07:52,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:07:52,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346805265] [2024-12-02 08:07:52,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346805265] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:07:52,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493952890] [2024-12-02 08:07:52,626 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 08:07:52,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:07:52,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:07:52,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:07:52,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:07:52,738 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 08:07:52,738 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:07:52,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 08:07:52,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:07:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:07:52,834 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:07:52,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493952890] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:07:52,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:07:52,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 12 [2024-12-02 08:07:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982926689] [2024-12-02 08:07:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:07:52,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:07:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:07:52,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:07:52,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:07:52,835 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:07:52,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 316 transitions, 7860 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:07:52,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:07:52,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:07:52,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:07:58,836 INFO L124 PetriNetUnfolderBase]: 21533/32183 cut-off events. [2024-12-02 08:07:58,837 INFO L125 PetriNetUnfolderBase]: For 498365/498365 co-relation queries the response was YES. [2024-12-02 08:07:59,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162286 conditions, 32183 events. 21533/32183 cut-off events. For 498365/498365 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 218400 event pairs, 6858 based on Foata normal form. 4/32187 useless extension candidates. Maximal degree in co-relation 162183. Up to 13302 conditions per place. [2024-12-02 08:07:59,261 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 280 selfloop transitions, 127 changer transitions 8/416 dead transitions. [2024-12-02 08:07:59,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 416 transitions, 9628 flow [2024-12-02 08:07:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:07:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:07:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-12-02 08:07:59,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-12-02 08:07:59,262 INFO L175 Difference]: Start difference. First operand has 242 places, 316 transitions, 7860 flow. Second operand 7 states and 125 transitions. [2024-12-02 08:07:59,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 416 transitions, 9628 flow [2024-12-02 08:08:01,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 416 transitions, 9389 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-12-02 08:08:01,923 INFO L231 Difference]: Finished difference. Result has 246 places, 322 transitions, 8013 flow [2024-12-02 08:08:01,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7574, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8013, PETRI_PLACES=246, PETRI_TRANSITIONS=322} [2024-12-02 08:08:01,923 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 211 predicate places. [2024-12-02 08:08:01,923 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 322 transitions, 8013 flow [2024-12-02 08:08:01,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:08:01,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:08:01,923 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:08:01,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 08:08:02,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a7ec8e-e565-4aa1-bd84-220c6599d7aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:08:02,124 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:08:02,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:08:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash -298615530, now seen corresponding path program 16 times [2024-12-02 08:08:02,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:08:02,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631184883] [2024-12-02 08:08:02,124 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 08:08:02,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:08:02,135 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 08:08:02,135 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:08:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:08:02,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:08:02,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631184883] [2024-12-02 08:08:02,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631184883] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:08:02,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:08:02,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:08:02,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825443792] [2024-12-02 08:08:02,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:08:02,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:08:02,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:08:02,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:08:02,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:08:02,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:08:02,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 322 transitions, 8013 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:08:02,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:08:02,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:08:02,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:08:08,055 INFO L124 PetriNetUnfolderBase]: 21495/32101 cut-off events. [2024-12-02 08:08:08,055 INFO L125 PetriNetUnfolderBase]: For 500270/500270 co-relation queries the response was YES. [2024-12-02 08:08:08,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163115 conditions, 32101 events. 21495/32101 cut-off events. For 500270/500270 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 217336 event pairs, 6601 based on Foata normal form. 13/32114 useless extension candidates. Maximal degree in co-relation 163011. Up to 11838 conditions per place. [2024-12-02 08:08:08,634 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 310 selfloop transitions, 111 changer transitions 1/423 dead transitions. [2024-12-02 08:08:08,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 423 transitions, 9736 flow [2024-12-02 08:08:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:08:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 08:08:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-12-02 08:08:08,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5317460317460317 [2024-12-02 08:08:08,635 INFO L175 Difference]: Start difference. First operand has 246 places, 322 transitions, 8013 flow. Second operand 7 states and 134 transitions. [2024-12-02 08:08:08,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 423 transitions, 9736 flow [2024-12-02 08:08:11,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 423 transitions, 9478 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-12-02 08:08:11,322 INFO L231 Difference]: Finished difference. Result has 249 places, 323 transitions, 8010 flow [2024-12-02 08:08:11,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7755, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8010, PETRI_PLACES=249, PETRI_TRANSITIONS=323} [2024-12-02 08:08:11,323 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 214 predicate places. [2024-12-02 08:08:11,323 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 323 transitions, 8010 flow [2024-12-02 08:08:11,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:08:11,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:08:11,323 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:08:11,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-12-02 08:08:11,323 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:08:11,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:08:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash -788452992, now seen corresponding path program 18 times [2024-12-02 08:08:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:08:11,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718954517] [2024-12-02 08:08:11,323 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 08:08:11,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:08:11,345 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 08:08:11,345 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:08:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:08:11,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:08:11,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718954517] [2024-12-02 08:08:11,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718954517] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:08:11,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:08:11,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:08:11,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635123775] [2024-12-02 08:08:11,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:08:11,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:08:11,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:08:11,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:08:11,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:08:11,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-12-02 08:08:11,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 323 transitions, 8010 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:08:11,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:08:11,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-12-02 08:08:11,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand