./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya --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 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:20:52,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:20:53,034 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:20:53,039 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:20:53,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:20:53,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:20:53,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:20:53,066 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:20:53,067 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:20:53,067 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:20:53,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:20:53,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:20:53,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:20:53,070 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:20:53,071 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:20:53,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:20:53,072 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:20:53,073 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:20:53,073 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:20:53,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:20:53,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:20:53,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:20:53,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:20:53,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:20:53,079 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:20:53,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:20:53,080 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:20:53,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:20:53,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:20:53,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:20:53,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:20:53,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:20:53,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:20:53,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:20:53,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:20:53,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:20:53,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:20:53,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:20:53,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:20:53,084 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:20:53,085 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:20:53,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:20:53,085 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 [2023-11-29 04:20:53,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:20:53,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:20:53,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:20:53,324 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:20:53,324 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:20:53,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2023-11-29 04:20:56,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:20:56,387 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:20:56,388 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2023-11-29 04:20:56,396 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/data/3f472c75b/06819ee2fdde44d2a31f4880a885fb5f/FLAG8a49ebe6a [2023-11-29 04:20:56,411 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/data/3f472c75b/06819ee2fdde44d2a31f4880a885fb5f [2023-11-29 04:20:56,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:20:56,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:20:56,415 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:20:56,416 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:20:56,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:20:56,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a5fd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56, skipping insertion in model container [2023-11-29 04:20:56,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,443 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:20:56,594 WARN L240 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_730c3012-5ad0-49e9-8438-828f43eab340/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2528,2541] [2023-11-29 04:20:56,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:20:56,612 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:20:56,639 WARN L240 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_730c3012-5ad0-49e9-8438-828f43eab340/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2528,2541] [2023-11-29 04:20:56,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:20:56,650 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:20:56,650 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:20:56,658 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:20:56,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56 WrapperNode [2023-11-29 04:20:56,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:20:56,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:20:56,660 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:20:56,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:20:56,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,697 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 120 [2023-11-29 04:20:56,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:20:56,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:20:56,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:20:56,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:20:56,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,715 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,733 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 04:20:56,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:20:56,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:20:56,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:20:56,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:20:56,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (1/1) ... [2023-11-29 04:20:56,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:20:56,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:20:56,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:20:56,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:20:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:20:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:20:56,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:20:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:20:56,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:20:56,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 04:20:56,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 04:20:56,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 04:20:56,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 04:20:56,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:20:56,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:20:56,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:20:56,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:20:56,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 04:20:56,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:20:56,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:20:56,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:20:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:20:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:20:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 04:20:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:20:56,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:20:56,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:20:56,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:20:56,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:20:56,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:20:56,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:20:56,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:20:56,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 04:20:56,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:20:56,836 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:20:56,964 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:20:56,966 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:20:57,222 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:20:57,417 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:20:57,417 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 04:20:57,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:20:57 BoogieIcfgContainer [2023-11-29 04:20:57,418 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:20:57,421 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:20:57,421 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:20:57,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:20:57,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:20:56" (1/3) ... [2023-11-29 04:20:57,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c1387c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:20:57, skipping insertion in model container [2023-11-29 04:20:57,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:56" (2/3) ... [2023-11-29 04:20:57,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c1387c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:20:57, skipping insertion in model container [2023-11-29 04:20:57,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:20:57" (3/3) ... [2023-11-29 04:20:57,427 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2023-11-29 04:20:57,435 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:20:57,444 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:20:57,444 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:20:57,444 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:20:57,499 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 04:20:57,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 43 transitions, 114 flow [2023-11-29 04:20:57,561 INFO L124 PetriNetUnfolderBase]: 4/39 cut-off events. [2023-11-29 04:20:57,561 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 04:20:57,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 39 events. 4/39 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-29 04:20:57,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 43 transitions, 114 flow [2023-11-29 04:20:57,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 38 transitions, 100 flow [2023-11-29 04:20:57,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:20:57,583 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11fa8beb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:20:57,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 04:20:57,597 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:20:57,598 INFO L124 PetriNetUnfolderBase]: 4/37 cut-off events. [2023-11-29 04:20:57,598 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 04:20:57,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:57,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:57,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:20:57,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:57,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1610158265, now seen corresponding path program 1 times [2023-11-29 04:20:57,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:57,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879175522] [2023-11-29 04:20:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:57,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:20:57,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:57,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879175522] [2023-11-29 04:20:57,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879175522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:57,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:57,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:20:57,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051562765] [2023-11-29 04:20:57,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:58,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:20:58,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:58,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:20:58,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:20:58,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:20:58,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-11-29 04:20:58,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:58,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:20:58,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:58,774 INFO L124 PetriNetUnfolderBase]: 3661/5016 cut-off events. [2023-11-29 04:20:58,775 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-11-29 04:20:58,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 5016 events. 3661/5016 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 21808 event pairs, 656 based on Foata normal form. 1/5004 useless extension candidates. Maximal degree in co-relation 8256. Up to 3880 conditions per place. [2023-11-29 04:20:58,835 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 53 selfloop transitions, 5 changer transitions 1/64 dead transitions. [2023-11-29 04:20:58,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 291 flow [2023-11-29 04:20:58,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:20:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:20:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-29 04:20:58,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2023-11-29 04:20:58,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-29 04:20:58,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-29 04:20:58,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:58,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-29 04:20:58,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2023-11-29 04:20:58,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2023-11-29 04:20:58,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2023-11-29 04:20:58,867 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 100 flow. Second operand 3 states and 87 transitions. [2023-11-29 04:20:58,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 291 flow [2023-11-29 04:20:58,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 261 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 04:20:58,881 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 117 flow [2023-11-29 04:20:58,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2023-11-29 04:20:58,888 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -5 predicate places. [2023-11-29 04:20:58,889 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 117 flow [2023-11-29 04:20:58,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-11-29 04:20:58,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:58,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:58,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:20:58,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:20:58,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash -240374807, now seen corresponding path program 1 times [2023-11-29 04:20:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:58,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847188395] [2023-11-29 04:20:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:20:59,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:59,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847188395] [2023-11-29 04:20:59,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847188395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:59,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:59,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:20:59,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216307882] [2023-11-29 04:20:59,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:59,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:20:59,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:59,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:20:59,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:20:59,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:20:59,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:59,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:59,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:20:59,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:00,259 INFO L124 PetriNetUnfolderBase]: 7926/10704 cut-off events. [2023-11-29 04:21:00,259 INFO L125 PetriNetUnfolderBase]: For 1813/1833 co-relation queries the response was YES. [2023-11-29 04:21:00,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24173 conditions, 10704 events. 7926/10704 cut-off events. For 1813/1833 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 54499 event pairs, 2446 based on Foata normal form. 0/10156 useless extension candidates. Maximal degree in co-relation 3833. Up to 5601 conditions per place. [2023-11-29 04:21:00,347 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 97 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2023-11-29 04:21:00,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 111 transitions, 528 flow [2023-11-29 04:21:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:21:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:21:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2023-11-29 04:21:00,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6232558139534884 [2023-11-29 04:21:00,351 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 134 transitions. [2023-11-29 04:21:00,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 134 transitions. [2023-11-29 04:21:00,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:00,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 134 transitions. [2023-11-29 04:21:00,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:00,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:00,355 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:00,355 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 117 flow. Second operand 5 states and 134 transitions. [2023-11-29 04:21:00,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 111 transitions, 528 flow [2023-11-29 04:21:00,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 111 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:21:00,360 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 175 flow [2023-11-29 04:21:00,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2023-11-29 04:21:00,362 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2023-11-29 04:21:00,362 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 175 flow [2023-11-29 04:21:00,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:00,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:00,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:00,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:21:00,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:00,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:00,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1726688973, now seen corresponding path program 2 times [2023-11-29 04:21:00,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:00,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73204093] [2023-11-29 04:21:00,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:00,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:00,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:00,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73204093] [2023-11-29 04:21:00,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73204093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:00,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:00,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:21:00,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354785620] [2023-11-29 04:21:00,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:00,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:21:00,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:00,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:21:00,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:21:00,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:21:00,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 175 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2023-11-29 04:21:00,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:00,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:21:00,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:02,320 INFO L124 PetriNetUnfolderBase]: 10697/14496 cut-off events. [2023-11-29 04:21:02,321 INFO L125 PetriNetUnfolderBase]: For 5911/5911 co-relation queries the response was YES. [2023-11-29 04:21:02,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37728 conditions, 14496 events. 10697/14496 cut-off events. For 5911/5911 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 78098 event pairs, 1487 based on Foata normal form. 304/14790 useless extension candidates. Maximal degree in co-relation 18243. Up to 3850 conditions per place. [2023-11-29 04:21:02,401 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 150 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2023-11-29 04:21:02,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 167 transitions, 852 flow [2023-11-29 04:21:02,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:21:02,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:21:02,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2023-11-29 04:21:02,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6611295681063123 [2023-11-29 04:21:02,404 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 199 transitions. [2023-11-29 04:21:02,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 199 transitions. [2023-11-29 04:21:02,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:02,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 199 transitions. [2023-11-29 04:21:02,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.428571428571427) internal successors, (199), 7 states have internal predecessors, (199), 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) [2023-11-29 04:21:02,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 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) [2023-11-29 04:21:02,409 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 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) [2023-11-29 04:21:02,410 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 175 flow. Second operand 7 states and 199 transitions. [2023-11-29 04:21:02,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 167 transitions, 852 flow [2023-11-29 04:21:02,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 167 transitions, 852 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:21:02,422 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 266 flow [2023-11-29 04:21:02,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=266, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-11-29 04:21:02,423 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2023-11-29 04:21:02,423 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 266 flow [2023-11-29 04:21:02,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2023-11-29 04:21:02,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:02,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:02,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:21:02,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:02,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:02,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1609585012, now seen corresponding path program 1 times [2023-11-29 04:21:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:02,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092108330] [2023-11-29 04:21:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:02,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:02,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092108330] [2023-11-29 04:21:02,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092108330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:02,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:02,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:21:02,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037460341] [2023-11-29 04:21:02,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:02,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:21:02,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:02,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:21:02,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:21:02,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:21:02,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-11-29 04:21:02,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:02,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:21:02,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:03,335 INFO L124 PetriNetUnfolderBase]: 7455/10264 cut-off events. [2023-11-29 04:21:03,335 INFO L125 PetriNetUnfolderBase]: For 13447/13487 co-relation queries the response was YES. [2023-11-29 04:21:03,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30457 conditions, 10264 events. 7455/10264 cut-off events. For 13447/13487 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 52359 event pairs, 2869 based on Foata normal form. 388/10578 useless extension candidates. Maximal degree in co-relation 21284. Up to 6187 conditions per place. [2023-11-29 04:21:03,397 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 74 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-11-29 04:21:03,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 503 flow [2023-11-29 04:21:03,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:21:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:21:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-29 04:21:03,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6821705426356589 [2023-11-29 04:21:03,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-29 04:21:03,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-29 04:21:03,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:03,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-29 04:21:03,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2023-11-29 04:21:03,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2023-11-29 04:21:03,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2023-11-29 04:21:03,402 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 266 flow. Second operand 3 states and 88 transitions. [2023-11-29 04:21:03,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 503 flow [2023-11-29 04:21:03,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 495 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 04:21:03,427 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 271 flow [2023-11-29 04:21:03,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-11-29 04:21:03,428 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 14 predicate places. [2023-11-29 04:21:03,428 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 271 flow [2023-11-29 04:21:03,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-11-29 04:21:03,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:03,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:03,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:21:03,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:03,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1348236679, now seen corresponding path program 3 times [2023-11-29 04:21:03,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:03,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582152705] [2023-11-29 04:21:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:03,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:03,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:03,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582152705] [2023-11-29 04:21:03,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582152705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:03,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:03,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:21:03,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620734659] [2023-11-29 04:21:03,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:03,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:21:03,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:03,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:21:03,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:21:03,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:21:03,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2023-11-29 04:21:03,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:03,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:21:03,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:05,248 INFO L124 PetriNetUnfolderBase]: 15011/20183 cut-off events. [2023-11-29 04:21:05,248 INFO L125 PetriNetUnfolderBase]: For 21035/21050 co-relation queries the response was YES. [2023-11-29 04:21:05,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59092 conditions, 20183 events. 15011/20183 cut-off events. For 21035/21050 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 106098 event pairs, 4865 based on Foata normal form. 166/20320 useless extension candidates. Maximal degree in co-relation 42403. Up to 9134 conditions per place. [2023-11-29 04:21:05,410 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 107 selfloop transitions, 17 changer transitions 0/127 dead transitions. [2023-11-29 04:21:05,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 127 transitions, 781 flow [2023-11-29 04:21:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:21:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:21:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2023-11-29 04:21:05,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2023-11-29 04:21:05,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 132 transitions. [2023-11-29 04:21:05,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 132 transitions. [2023-11-29 04:21:05,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:05,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 132 transitions. [2023-11-29 04:21:05,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2023-11-29 04:21:05,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:05,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:05,415 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 271 flow. Second operand 5 states and 132 transitions. [2023-11-29 04:21:05,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 127 transitions, 781 flow [2023-11-29 04:21:05,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 127 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:21:05,475 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 397 flow [2023-11-29 04:21:05,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2023-11-29 04:21:05,477 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2023-11-29 04:21:05,477 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 397 flow [2023-11-29 04:21:05,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2023-11-29 04:21:05,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:05,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:05,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:21:05,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:05,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1419591305, now seen corresponding path program 4 times [2023-11-29 04:21:05,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:05,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585555393] [2023-11-29 04:21:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:05,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:05,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:05,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585555393] [2023-11-29 04:21:05,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585555393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:05,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:05,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:21:05,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232110690] [2023-11-29 04:21:05,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:05,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:21:05,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:05,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:21:05,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:21:05,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:21:05,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:05,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:05,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:21:05,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:07,278 INFO L124 PetriNetUnfolderBase]: 12956/17920 cut-off events. [2023-11-29 04:21:07,279 INFO L125 PetriNetUnfolderBase]: For 35298/35339 co-relation queries the response was YES. [2023-11-29 04:21:07,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58660 conditions, 17920 events. 12956/17920 cut-off events. For 35298/35339 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 100023 event pairs, 3269 based on Foata normal form. 88/17921 useless extension candidates. Maximal degree in co-relation 42296. Up to 8145 conditions per place. [2023-11-29 04:21:07,404 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 121 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2023-11-29 04:21:07,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 140 transitions, 946 flow [2023-11-29 04:21:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:21:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:21:07,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2023-11-29 04:21:07,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641860465116279 [2023-11-29 04:21:07,406 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 138 transitions. [2023-11-29 04:21:07,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 138 transitions. [2023-11-29 04:21:07,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:07,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 138 transitions. [2023-11-29 04:21:07,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-29 04:21:07,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:07,408 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:07,408 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 397 flow. Second operand 5 states and 138 transitions. [2023-11-29 04:21:07,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 140 transitions, 946 flow [2023-11-29 04:21:07,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 140 transitions, 928 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-29 04:21:07,668 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 440 flow [2023-11-29 04:21:07,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=440, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-11-29 04:21:07,669 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 26 predicate places. [2023-11-29 04:21:07,669 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 440 flow [2023-11-29 04:21:07,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:07,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:07,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:07,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:21:07,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:07,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:07,671 INFO L85 PathProgramCache]: Analyzing trace with hash -688572187, now seen corresponding path program 1 times [2023-11-29 04:21:07,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:07,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425303626] [2023-11-29 04:21:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:07,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:07,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:07,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425303626] [2023-11-29 04:21:07,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425303626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:07,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:07,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:21:07,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043943413] [2023-11-29 04:21:07,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:07,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:21:07,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:07,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:21:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:21:07,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:21:07,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:07,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:07,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:21:07,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:09,567 INFO L124 PetriNetUnfolderBase]: 13610/19213 cut-off events. [2023-11-29 04:21:09,567 INFO L125 PetriNetUnfolderBase]: For 49674/49822 co-relation queries the response was YES. [2023-11-29 04:21:09,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64879 conditions, 19213 events. 13610/19213 cut-off events. For 49674/49822 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 114504 event pairs, 4384 based on Foata normal form. 18/18255 useless extension candidates. Maximal degree in co-relation 47447. Up to 10078 conditions per place. [2023-11-29 04:21:09,698 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 110 selfloop transitions, 15 changer transitions 0/132 dead transitions. [2023-11-29 04:21:09,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 132 transitions, 899 flow [2023-11-29 04:21:09,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:21:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:21:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2023-11-29 04:21:09,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641860465116279 [2023-11-29 04:21:09,700 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 138 transitions. [2023-11-29 04:21:09,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 138 transitions. [2023-11-29 04:21:09,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:09,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 138 transitions. [2023-11-29 04:21:09,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2023-11-29 04:21:09,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:09,702 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:09,702 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 440 flow. Second operand 5 states and 138 transitions. [2023-11-29 04:21:09,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 132 transitions, 899 flow [2023-11-29 04:21:09,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 132 transitions, 866 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 04:21:09,891 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 462 flow [2023-11-29 04:21:09,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-11-29 04:21:09,892 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2023-11-29 04:21:09,893 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 462 flow [2023-11-29 04:21:09,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:09,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:09,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:09,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:21:09,894 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:09,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash -618819671, now seen corresponding path program 5 times [2023-11-29 04:21:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:09,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358878163] [2023-11-29 04:21:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:09,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:10,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:10,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:10,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358878163] [2023-11-29 04:21:10,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358878163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:10,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:10,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:21:10,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150708806] [2023-11-29 04:21:10,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:10,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:21:10,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:21:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:21:10,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:21:10,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 462 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2023-11-29 04:21:10,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:10,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:21:10,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:12,652 INFO L124 PetriNetUnfolderBase]: 18931/25385 cut-off events. [2023-11-29 04:21:12,653 INFO L125 PetriNetUnfolderBase]: For 51066/52464 co-relation queries the response was YES. [2023-11-29 04:21:12,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84466 conditions, 25385 events. 18931/25385 cut-off events. For 51066/52464 co-relation queries the response was YES. Maximal size of possible extension queue 973. Compared 139835 event pairs, 6231 based on Foata normal form. 366/25711 useless extension candidates. Maximal degree in co-relation 70172. Up to 14610 conditions per place. [2023-11-29 04:21:12,796 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 128 selfloop transitions, 22 changer transitions 0/153 dead transitions. [2023-11-29 04:21:12,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 153 transitions, 1068 flow [2023-11-29 04:21:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:21:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:21:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2023-11-29 04:21:12,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6356589147286822 [2023-11-29 04:21:12,798 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 164 transitions. [2023-11-29 04:21:12,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 164 transitions. [2023-11-29 04:21:12,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:12,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 164 transitions. [2023-11-29 04:21:12,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 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) [2023-11-29 04:21:12,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2023-11-29 04:21:12,800 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2023-11-29 04:21:12,801 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 462 flow. Second operand 6 states and 164 transitions. [2023-11-29 04:21:12,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 153 transitions, 1068 flow [2023-11-29 04:21:12,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 153 transitions, 1043 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 04:21:12,974 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 538 flow [2023-11-29 04:21:12,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=538, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2023-11-29 04:21:12,975 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 35 predicate places. [2023-11-29 04:21:12,975 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 538 flow [2023-11-29 04:21:12,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2023-11-29 04:21:12,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:12,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:12,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:21:12,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:12,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:12,976 INFO L85 PathProgramCache]: Analyzing trace with hash 328980543, now seen corresponding path program 2 times [2023-11-29 04:21:12,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:12,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840205260] [2023-11-29 04:21:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:12,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:13,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:13,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840205260] [2023-11-29 04:21:13,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840205260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:13,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:13,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:21:13,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105852729] [2023-11-29 04:21:13,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:13,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:21:13,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:13,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:21:13,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:21:13,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:21:13,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 538 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:13,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:13,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:21:13,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:16,580 INFO L124 PetriNetUnfolderBase]: 26652/35895 cut-off events. [2023-11-29 04:21:16,581 INFO L125 PetriNetUnfolderBase]: For 112577/113832 co-relation queries the response was YES. [2023-11-29 04:21:16,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126477 conditions, 35895 events. 26652/35895 cut-off events. For 112577/113832 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 208729 event pairs, 9557 based on Foata normal form. 265/33934 useless extension candidates. Maximal degree in co-relation 90065. Up to 21177 conditions per place. [2023-11-29 04:21:16,808 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 176 selfloop transitions, 15 changer transitions 0/200 dead transitions. [2023-11-29 04:21:16,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 200 transitions, 1955 flow [2023-11-29 04:21:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:21:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:21:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2023-11-29 04:21:16,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2023-11-29 04:21:16,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 132 transitions. [2023-11-29 04:21:16,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 132 transitions. [2023-11-29 04:21:16,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:16,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 132 transitions. [2023-11-29 04:21:16,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2023-11-29 04:21:16,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:16,811 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:16,811 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 538 flow. Second operand 5 states and 132 transitions. [2023-11-29 04:21:16,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 200 transitions, 1955 flow [2023-11-29 04:21:17,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 200 transitions, 1815 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-29 04:21:17,185 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 679 flow [2023-11-29 04:21:17,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=679, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2023-11-29 04:21:17,186 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 39 predicate places. [2023-11-29 04:21:17,186 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 679 flow [2023-11-29 04:21:17,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:17,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:17,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:17,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:21:17,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:17,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash 895302849, now seen corresponding path program 3 times [2023-11-29 04:21:17,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:17,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862268009] [2023-11-29 04:21:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:17,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:17,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862268009] [2023-11-29 04:21:17,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862268009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:17,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:17,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:21:17,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761369135] [2023-11-29 04:21:17,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:17,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:21:17,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:21:17,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:21:17,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:21:17,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2023-11-29 04:21:17,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:17,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:21:17,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:22,159 INFO L124 PetriNetUnfolderBase]: 36624/49317 cut-off events. [2023-11-29 04:21:22,159 INFO L125 PetriNetUnfolderBase]: For 163812/163920 co-relation queries the response was YES. [2023-11-29 04:21:22,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187371 conditions, 49317 events. 36624/49317 cut-off events. For 163812/163920 co-relation queries the response was YES. Maximal size of possible extension queue 1729. Compared 290087 event pairs, 13560 based on Foata normal form. 784/48803 useless extension candidates. Maximal degree in co-relation 139608. Up to 32340 conditions per place. [2023-11-29 04:21:22,512 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 142 selfloop transitions, 42 changer transitions 2/191 dead transitions. [2023-11-29 04:21:22,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 191 transitions, 1715 flow [2023-11-29 04:21:22,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:21:22,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:21:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2023-11-29 04:21:22,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5930232558139535 [2023-11-29 04:21:22,514 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 153 transitions. [2023-11-29 04:21:22,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 153 transitions. [2023-11-29 04:21:22,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:22,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 153 transitions. [2023-11-29 04:21:22,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2023-11-29 04:21:22,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2023-11-29 04:21:22,517 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2023-11-29 04:21:22,517 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 679 flow. Second operand 6 states and 153 transitions. [2023-11-29 04:21:22,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 191 transitions, 1715 flow [2023-11-29 04:21:23,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 191 transitions, 1703 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-29 04:21:23,948 INFO L231 Difference]: Finished difference. Result has 94 places, 107 transitions, 1055 flow [2023-11-29 04:21:23,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1055, PETRI_PLACES=94, PETRI_TRANSITIONS=107} [2023-11-29 04:21:23,950 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2023-11-29 04:21:23,950 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 107 transitions, 1055 flow [2023-11-29 04:21:23,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2023-11-29 04:21:23,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:23,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:23,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:21:23,951 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:23,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash 469758665, now seen corresponding path program 4 times [2023-11-29 04:21:23,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:23,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836766154] [2023-11-29 04:21:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:24,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:24,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836766154] [2023-11-29 04:21:24,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836766154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:24,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:24,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:21:24,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882232572] [2023-11-29 04:21:24,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:24,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:21:24,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:24,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:21:24,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:21:24,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:21:24,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 107 transitions, 1055 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:24,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:24,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:21:24,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:28,581 INFO L124 PetriNetUnfolderBase]: 31103/42035 cut-off events. [2023-11-29 04:21:28,582 INFO L125 PetriNetUnfolderBase]: For 176448/177432 co-relation queries the response was YES. [2023-11-29 04:21:28,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170069 conditions, 42035 events. 31103/42035 cut-off events. For 176448/177432 co-relation queries the response was YES. Maximal size of possible extension queue 1669. Compared 250828 event pairs, 10114 based on Foata normal form. 252/40938 useless extension candidates. Maximal degree in co-relation 128084. Up to 23177 conditions per place. [2023-11-29 04:21:28,972 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 148 selfloop transitions, 35 changer transitions 0/198 dead transitions. [2023-11-29 04:21:28,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 198 transitions, 2092 flow [2023-11-29 04:21:28,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:21:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:21:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2023-11-29 04:21:28,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2023-11-29 04:21:28,974 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 132 transitions. [2023-11-29 04:21:28,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 132 transitions. [2023-11-29 04:21:28,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:28,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 132 transitions. [2023-11-29 04:21:28,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2023-11-29 04:21:28,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:28,976 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:28,977 INFO L175 Difference]: Start difference. First operand has 94 places, 107 transitions, 1055 flow. Second operand 5 states and 132 transitions. [2023-11-29 04:21:28,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 198 transitions, 2092 flow [2023-11-29 04:21:30,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 198 transitions, 2064 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-11-29 04:21:30,937 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 1426 flow [2023-11-29 04:21:30,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1426, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2023-11-29 04:21:30,937 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 54 predicate places. [2023-11-29 04:21:30,938 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 1426 flow [2023-11-29 04:21:30,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:30,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:30,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:30,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:21:30,938 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:30,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash -411034827, now seen corresponding path program 5 times [2023-11-29 04:21:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:30,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972095668] [2023-11-29 04:21:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:30,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:31,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972095668] [2023-11-29 04:21:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972095668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:31,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:31,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:21:31,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426678931] [2023-11-29 04:21:31,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:31,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:21:31,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:21:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:21:31,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:21:31,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 1426 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2023-11-29 04:21:31,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:31,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:21:31,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:36,467 INFO L124 PetriNetUnfolderBase]: 35666/48329 cut-off events. [2023-11-29 04:21:36,467 INFO L125 PetriNetUnfolderBase]: For 263313/264974 co-relation queries the response was YES. [2023-11-29 04:21:36,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205728 conditions, 48329 events. 35666/48329 cut-off events. For 263313/264974 co-relation queries the response was YES. Maximal size of possible extension queue 2042. Compared 296714 event pairs, 3824 based on Foata normal form. 508/47167 useless extension candidates. Maximal degree in co-relation 157655. Up to 18302 conditions per place. [2023-11-29 04:21:36,934 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 257 selfloop transitions, 30 changer transitions 4/306 dead transitions. [2023-11-29 04:21:36,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 306 transitions, 3527 flow [2023-11-29 04:21:36,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:21:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:21:36,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2023-11-29 04:21:36,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6245847176079734 [2023-11-29 04:21:36,936 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 188 transitions. [2023-11-29 04:21:36,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 188 transitions. [2023-11-29 04:21:36,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:36,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 188 transitions. [2023-11-29 04:21:36,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 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) [2023-11-29 04:21:36,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 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) [2023-11-29 04:21:36,939 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 43.0) internal successors, (344), 8 states have internal predecessors, (344), 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) [2023-11-29 04:21:36,939 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 1426 flow. Second operand 7 states and 188 transitions. [2023-11-29 04:21:36,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 306 transitions, 3527 flow [2023-11-29 04:21:39,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 306 transitions, 3451 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-11-29 04:21:39,998 INFO L231 Difference]: Finished difference. Result has 108 places, 130 transitions, 1575 flow [2023-11-29 04:21:39,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1575, PETRI_PLACES=108, PETRI_TRANSITIONS=130} [2023-11-29 04:21:39,999 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 61 predicate places. [2023-11-29 04:21:39,999 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 130 transitions, 1575 flow [2023-11-29 04:21:39,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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) [2023-11-29 04:21:39,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:39,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:39,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:21:39,999 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:40,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:40,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1659313104, now seen corresponding path program 1 times [2023-11-29 04:21:40,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:40,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334231818] [2023-11-29 04:21:40,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:40,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:40,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:40,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334231818] [2023-11-29 04:21:40,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334231818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:40,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:40,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:21:40,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105136735] [2023-11-29 04:21:40,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:40,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:21:40,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:40,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:21:40,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:21:40,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:21:40,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 130 transitions, 1575 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-11-29 04:21:40,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:40,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:21:40,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:43,838 INFO L124 PetriNetUnfolderBase]: 24754/35067 cut-off events. [2023-11-29 04:21:43,839 INFO L125 PetriNetUnfolderBase]: For 199036/202229 co-relation queries the response was YES. [2023-11-29 04:21:43,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146257 conditions, 35067 events. 24754/35067 cut-off events. For 199036/202229 co-relation queries the response was YES. Maximal size of possible extension queue 1551. Compared 223888 event pairs, 5902 based on Foata normal form. 1627/36301 useless extension candidates. Maximal degree in co-relation 115374. Up to 22378 conditions per place. [2023-11-29 04:21:44,287 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 166 selfloop transitions, 3 changer transitions 8/195 dead transitions. [2023-11-29 04:21:44,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 195 transitions, 2756 flow [2023-11-29 04:21:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:21:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:21:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-29 04:21:44,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2023-11-29 04:21:44,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-29 04:21:44,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-29 04:21:44,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:44,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-29 04:21:44,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2023-11-29 04:21:44,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2023-11-29 04:21:44,290 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2023-11-29 04:21:44,290 INFO L175 Difference]: Start difference. First operand has 108 places, 130 transitions, 1575 flow. Second operand 3 states and 84 transitions. [2023-11-29 04:21:44,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 195 transitions, 2756 flow [2023-11-29 04:21:45,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 195 transitions, 2675 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-29 04:21:45,345 INFO L231 Difference]: Finished difference. Result has 107 places, 127 transitions, 1496 flow [2023-11-29 04:21:45,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1496, PETRI_PLACES=107, PETRI_TRANSITIONS=127} [2023-11-29 04:21:45,346 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 60 predicate places. [2023-11-29 04:21:45,346 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 127 transitions, 1496 flow [2023-11-29 04:21:45,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-11-29 04:21:45,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:45,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:45,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:21:45,346 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:45,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:45,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1384889035, now seen corresponding path program 6 times [2023-11-29 04:21:45,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:45,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958829101] [2023-11-29 04:21:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:45,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:45,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:45,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958829101] [2023-11-29 04:21:45,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958829101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:45,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:45,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:21:45,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039574310] [2023-11-29 04:21:45,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:45,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:21:45,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:45,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:21:45,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:21:45,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:21:45,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 127 transitions, 1496 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:45,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:45,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:21:45,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:50,495 INFO L124 PetriNetUnfolderBase]: 29399/40419 cut-off events. [2023-11-29 04:21:50,496 INFO L125 PetriNetUnfolderBase]: For 214136/214957 co-relation queries the response was YES. [2023-11-29 04:21:50,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174173 conditions, 40419 events. 29399/40419 cut-off events. For 214136/214957 co-relation queries the response was YES. Maximal size of possible extension queue 1604. Compared 244504 event pairs, 11959 based on Foata normal form. 166/39065 useless extension candidates. Maximal degree in co-relation 141010. Up to 25167 conditions per place. [2023-11-29 04:21:50,824 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 100 selfloop transitions, 48 changer transitions 19/182 dead transitions. [2023-11-29 04:21:50,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 182 transitions, 2120 flow [2023-11-29 04:21:50,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:21:50,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:21:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2023-11-29 04:21:50,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5953488372093023 [2023-11-29 04:21:50,826 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 128 transitions. [2023-11-29 04:21:50,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 128 transitions. [2023-11-29 04:21:50,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:50,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 128 transitions. [2023-11-29 04:21:50,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:50,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:50,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:50,828 INFO L175 Difference]: Start difference. First operand has 107 places, 127 transitions, 1496 flow. Second operand 5 states and 128 transitions. [2023-11-29 04:21:50,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 182 transitions, 2120 flow [2023-11-29 04:21:52,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 182 transitions, 2101 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-29 04:21:52,998 INFO L231 Difference]: Finished difference. Result has 109 places, 121 transitions, 1492 flow [2023-11-29 04:21:52,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1492, PETRI_PLACES=109, PETRI_TRANSITIONS=121} [2023-11-29 04:21:52,999 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 62 predicate places. [2023-11-29 04:21:52,999 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 121 transitions, 1492 flow [2023-11-29 04:21:52,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:52,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:52,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:52,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 04:21:52,999 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:53,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1716535233, now seen corresponding path program 6 times [2023-11-29 04:21:53,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:53,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940317357] [2023-11-29 04:21:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:53,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:53,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:53,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940317357] [2023-11-29 04:21:53,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940317357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:53,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:53,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:21:53,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443152283] [2023-11-29 04:21:53,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:53,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:21:53,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:21:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:21:53,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:21:53,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 121 transitions, 1492 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:53,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:53,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:21:53,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:57,522 INFO L124 PetriNetUnfolderBase]: 28078/39215 cut-off events. [2023-11-29 04:21:57,522 INFO L125 PetriNetUnfolderBase]: For 220524/223994 co-relation queries the response was YES. [2023-11-29 04:21:57,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167994 conditions, 39215 events. 28078/39215 cut-off events. For 220524/223994 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 246279 event pairs, 9319 based on Foata normal form. 1085/40175 useless extension candidates. Maximal degree in co-relation 134302. Up to 18866 conditions per place. [2023-11-29 04:21:57,844 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 164 selfloop transitions, 27 changer transitions 7/206 dead transitions. [2023-11-29 04:21:57,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 206 transitions, 2516 flow [2023-11-29 04:21:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:21:57,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:21:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2023-11-29 04:21:57,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2023-11-29 04:21:57,846 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 132 transitions. [2023-11-29 04:21:57,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 132 transitions. [2023-11-29 04:21:57,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:57,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 132 transitions. [2023-11-29 04:21:57,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2023-11-29 04:21:57,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:57,847 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:21:57,848 INFO L175 Difference]: Start difference. First operand has 109 places, 121 transitions, 1492 flow. Second operand 5 states and 132 transitions. [2023-11-29 04:21:57,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 206 transitions, 2516 flow [2023-11-29 04:21:59,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 206 transitions, 2382 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-29 04:21:59,499 INFO L231 Difference]: Finished difference. Result has 109 places, 123 transitions, 1503 flow [2023-11-29 04:21:59,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1503, PETRI_PLACES=109, PETRI_TRANSITIONS=123} [2023-11-29 04:21:59,500 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 62 predicate places. [2023-11-29 04:21:59,500 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 123 transitions, 1503 flow [2023-11-29 04:21:59,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:59,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:59,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:59,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 04:21:59,501 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:21:59,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:59,501 INFO L85 PathProgramCache]: Analyzing trace with hash -129445637, now seen corresponding path program 7 times [2023-11-29 04:21:59,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:59,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285981848] [2023-11-29 04:21:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:59,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:21:59,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:59,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285981848] [2023-11-29 04:21:59,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285981848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:59,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:59,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:21:59,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078935470] [2023-11-29 04:21:59,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:59,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:21:59,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:59,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:21:59,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:21:59,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:21:59,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 123 transitions, 1503 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:21:59,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:59,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:21:59,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:22:04,676 INFO L124 PetriNetUnfolderBase]: 30552/42305 cut-off events. [2023-11-29 04:22:04,676 INFO L125 PetriNetUnfolderBase]: For 249768/250903 co-relation queries the response was YES. [2023-11-29 04:22:04,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184324 conditions, 42305 events. 30552/42305 cut-off events. For 249768/250903 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 266407 event pairs, 11368 based on Foata normal form. 665/41445 useless extension candidates. Maximal degree in co-relation 147876. Up to 26282 conditions per place. [2023-11-29 04:22:05,069 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 220 selfloop transitions, 20 changer transitions 6/261 dead transitions. [2023-11-29 04:22:05,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 261 transitions, 3539 flow [2023-11-29 04:22:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:22:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:22:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2023-11-29 04:22:05,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2023-11-29 04:22:05,071 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 132 transitions. [2023-11-29 04:22:05,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 132 transitions. [2023-11-29 04:22:05,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:22:05,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 132 transitions. [2023-11-29 04:22:05,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2023-11-29 04:22:05,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:22:05,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:22:05,073 INFO L175 Difference]: Start difference. First operand has 109 places, 123 transitions, 1503 flow. Second operand 5 states and 132 transitions. [2023-11-29 04:22:05,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 261 transitions, 3539 flow [2023-11-29 04:22:06,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 261 transitions, 3363 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-29 04:22:06,628 INFO L231 Difference]: Finished difference. Result has 112 places, 130 transitions, 1554 flow [2023-11-29 04:22:06,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1554, PETRI_PLACES=112, PETRI_TRANSITIONS=130} [2023-11-29 04:22:06,628 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 65 predicate places. [2023-11-29 04:22:06,628 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 130 transitions, 1554 flow [2023-11-29 04:22:06,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:22:06,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:22:06,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:22:06,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:22:06,629 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:22:06,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:22:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash -777342807, now seen corresponding path program 8 times [2023-11-29 04:22:06,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:22:06,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117186781] [2023-11-29 04:22:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:06,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:22:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:22:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:22:06,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117186781] [2023-11-29 04:22:06,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117186781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:22:06,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:22:06,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:22:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304419792] [2023-11-29 04:22:06,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:22:06,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:22:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:22:06,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:22:06,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:22:06,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:22:06,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 130 transitions, 1554 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2023-11-29 04:22:06,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:06,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:22:06,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:22:13,122 INFO L124 PetriNetUnfolderBase]: 38566/52456 cut-off events. [2023-11-29 04:22:13,122 INFO L125 PetriNetUnfolderBase]: For 299320/299426 co-relation queries the response was YES. [2023-11-29 04:22:13,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237763 conditions, 52456 events. 38566/52456 cut-off events. For 299320/299426 co-relation queries the response was YES. Maximal size of possible extension queue 1894. Compared 319337 event pairs, 13672 based on Foata normal form. 636/51276 useless extension candidates. Maximal degree in co-relation 189831. Up to 29195 conditions per place. [2023-11-29 04:22:13,734 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 174 selfloop transitions, 44 changer transitions 23/246 dead transitions. [2023-11-29 04:22:13,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 246 transitions, 3013 flow [2023-11-29 04:22:13,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:22:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:22:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2023-11-29 04:22:13,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5968992248062015 [2023-11-29 04:22:13,736 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 154 transitions. [2023-11-29 04:22:13,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 154 transitions. [2023-11-29 04:22:13,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:22:13,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 154 transitions. [2023-11-29 04:22:13,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 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) [2023-11-29 04:22:13,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2023-11-29 04:22:13,738 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2023-11-29 04:22:13,738 INFO L175 Difference]: Start difference. First operand has 112 places, 130 transitions, 1554 flow. Second operand 6 states and 154 transitions. [2023-11-29 04:22:13,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 246 transitions, 3013 flow [2023-11-29 04:22:16,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 246 transitions, 2987 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:22:16,636 INFO L231 Difference]: Finished difference. Result has 117 places, 129 transitions, 1618 flow [2023-11-29 04:22:16,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1618, PETRI_PLACES=117, PETRI_TRANSITIONS=129} [2023-11-29 04:22:16,636 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 70 predicate places. [2023-11-29 04:22:16,636 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 129 transitions, 1618 flow [2023-11-29 04:22:16,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2023-11-29 04:22:16,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:22:16,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:22:16,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 04:22:16,637 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:22:16,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:22:16,638 INFO L85 PathProgramCache]: Analyzing trace with hash 936314033, now seen corresponding path program 7 times [2023-11-29 04:22:16,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:22:16,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247239991] [2023-11-29 04:22:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:16,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:22:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:22:16,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:22:16,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247239991] [2023-11-29 04:22:16,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247239991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:22:16,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:22:16,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:22:16,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853083653] [2023-11-29 04:22:16,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:22:16,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:22:16,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:22:16,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:22:16,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:22:16,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:22:16,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 129 transitions, 1618 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2023-11-29 04:22:16,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:16,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:22:16,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:22:22,730 INFO L124 PetriNetUnfolderBase]: 37729/50750 cut-off events. [2023-11-29 04:22:22,730 INFO L125 PetriNetUnfolderBase]: For 311609/314078 co-relation queries the response was YES. [2023-11-29 04:22:22,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230248 conditions, 50750 events. 37729/50750 cut-off events. For 311609/314078 co-relation queries the response was YES. Maximal size of possible extension queue 1874. Compared 302003 event pairs, 8960 based on Foata normal form. 1136/51815 useless extension candidates. Maximal degree in co-relation 176393. Up to 20696 conditions per place. [2023-11-29 04:22:23,256 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 251 selfloop transitions, 33 changer transitions 1/291 dead transitions. [2023-11-29 04:22:23,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 291 transitions, 3741 flow [2023-11-29 04:22:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:22:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:22:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2023-11-29 04:22:23,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6085271317829457 [2023-11-29 04:22:23,258 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 157 transitions. [2023-11-29 04:22:23,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 157 transitions. [2023-11-29 04:22:23,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:22:23,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 157 transitions. [2023-11-29 04:22:23,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 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) [2023-11-29 04:22:23,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2023-11-29 04:22:23,260 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2023-11-29 04:22:23,260 INFO L175 Difference]: Start difference. First operand has 117 places, 129 transitions, 1618 flow. Second operand 6 states and 157 transitions. [2023-11-29 04:22:23,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 291 transitions, 3741 flow [2023-11-29 04:22:25,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 291 transitions, 3531 flow, removed 48 selfloop flow, removed 7 redundant places. [2023-11-29 04:22:25,831 INFO L231 Difference]: Finished difference. Result has 112 places, 137 transitions, 1764 flow [2023-11-29 04:22:25,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1764, PETRI_PLACES=112, PETRI_TRANSITIONS=137} [2023-11-29 04:22:25,832 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 65 predicate places. [2023-11-29 04:22:25,832 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 137 transitions, 1764 flow [2023-11-29 04:22:25,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2023-11-29 04:22:25,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:22:25,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:22:25,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 04:22:25,833 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:22:25,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:22:25,833 INFO L85 PathProgramCache]: Analyzing trace with hash 822722972, now seen corresponding path program 1 times [2023-11-29 04:22:25,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:22:25,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495449397] [2023-11-29 04:22:25,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:25,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:22:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:22:25,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:22:25,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495449397] [2023-11-29 04:22:25,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495449397] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:22:25,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40756918] [2023-11-29 04:22:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:25,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:22:25,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:22:25,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:22:25,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:22:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:26,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:22:26,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:22:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:22:26,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:22:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:22:26,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40756918] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:22:26,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:22:26,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-11-29 04:22:26,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740227223] [2023-11-29 04:22:26,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:22:26,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:22:26,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:22:26,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:22:26,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:22:26,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:22:26,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 1764 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:22:26,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:26,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:22:26,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:22:33,510 INFO L124 PetriNetUnfolderBase]: 43487/59138 cut-off events. [2023-11-29 04:22:33,510 INFO L125 PetriNetUnfolderBase]: For 371235/371601 co-relation queries the response was YES. [2023-11-29 04:22:33,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272313 conditions, 59138 events. 43487/59138 cut-off events. For 371235/371601 co-relation queries the response was YES. Maximal size of possible extension queue 2206. Compared 366618 event pairs, 1277 based on Foata normal form. 714/58329 useless extension candidates. Maximal degree in co-relation 215252. Up to 13235 conditions per place. [2023-11-29 04:22:34,096 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 263 selfloop transitions, 159 changer transitions 0/428 dead transitions. [2023-11-29 04:22:34,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 428 transitions, 4982 flow [2023-11-29 04:22:34,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:22:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 04:22:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 325 transitions. [2023-11-29 04:22:34,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398671096345515 [2023-11-29 04:22:34,098 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 325 transitions. [2023-11-29 04:22:34,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 325 transitions. [2023-11-29 04:22:34,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:22:34,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 325 transitions. [2023-11-29 04:22:34,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 23.214285714285715) internal successors, (325), 14 states have internal predecessors, (325), 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) [2023-11-29 04:22:34,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 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) [2023-11-29 04:22:34,102 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 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) [2023-11-29 04:22:34,102 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 1764 flow. Second operand 14 states and 325 transitions. [2023-11-29 04:22:34,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 428 transitions, 4982 flow [2023-11-29 04:22:39,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 428 transitions, 4827 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-29 04:22:39,944 INFO L231 Difference]: Finished difference. Result has 122 places, 219 transitions, 3235 flow [2023-11-29 04:22:39,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3235, PETRI_PLACES=122, PETRI_TRANSITIONS=219} [2023-11-29 04:22:39,945 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 75 predicate places. [2023-11-29 04:22:39,945 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 219 transitions, 3235 flow [2023-11-29 04:22:39,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:22:39,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:22:39,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:22:39,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:22:40,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:22:40,146 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:22:40,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:22:40,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1247329208, now seen corresponding path program 2 times [2023-11-29 04:22:40,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:22:40,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843991119] [2023-11-29 04:22:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:40,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:22:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:22:40,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:22:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843991119] [2023-11-29 04:22:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843991119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:22:40,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:22:40,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:22:40,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106203176] [2023-11-29 04:22:40,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:22:40,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:22:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:22:40,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:22:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:22:40,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:22:40,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 219 transitions, 3235 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-29 04:22:40,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:40,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:22:40,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:22:47,598 INFO L124 PetriNetUnfolderBase]: 42873/58939 cut-off events. [2023-11-29 04:22:47,598 INFO L125 PetriNetUnfolderBase]: For 430540/432542 co-relation queries the response was YES. [2023-11-29 04:22:47,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284487 conditions, 58939 events. 42873/58939 cut-off events. For 430540/432542 co-relation queries the response was YES. Maximal size of possible extension queue 2351. Compared 376124 event pairs, 13095 based on Foata normal form. 264/58465 useless extension candidates. Maximal degree in co-relation 259018. Up to 30479 conditions per place. [2023-11-29 04:22:48,227 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 212 selfloop transitions, 32 changer transitions 20/309 dead transitions. [2023-11-29 04:22:48,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 309 transitions, 4467 flow [2023-11-29 04:22:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:22:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:22:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2023-11-29 04:22:48,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6093023255813953 [2023-11-29 04:22:48,228 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 131 transitions. [2023-11-29 04:22:48,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 131 transitions. [2023-11-29 04:22:48,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:22:48,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 131 transitions. [2023-11-29 04:22:48,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-11-29 04:22:48,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:22:48,231 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:22:48,231 INFO L175 Difference]: Start difference. First operand has 122 places, 219 transitions, 3235 flow. Second operand 5 states and 131 transitions. [2023-11-29 04:22:48,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 309 transitions, 4467 flow [2023-11-29 04:22:56,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 309 transitions, 4239 flow, removed 43 selfloop flow, removed 2 redundant places. [2023-11-29 04:22:56,032 INFO L231 Difference]: Finished difference. Result has 126 places, 219 transitions, 3112 flow [2023-11-29 04:22:56,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3112, PETRI_PLACES=126, PETRI_TRANSITIONS=219} [2023-11-29 04:22:56,032 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 79 predicate places. [2023-11-29 04:22:56,033 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 219 transitions, 3112 flow [2023-11-29 04:22:56,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-29 04:22:56,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:22:56,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:22:56,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 04:22:56,033 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:22:56,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:22:56,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1602166634, now seen corresponding path program 3 times [2023-11-29 04:22:56,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:22:56,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573284743] [2023-11-29 04:22:56,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:56,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:22:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:22:56,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:22:56,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573284743] [2023-11-29 04:22:56,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573284743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:22:56,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:22:56,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:22:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049783772] [2023-11-29 04:22:56,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:22:56,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:22:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:22:56,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:22:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:22:56,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:22:56,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 219 transitions, 3112 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-29 04:22:56,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:56,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:22:56,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:05,415 INFO L124 PetriNetUnfolderBase]: 49928/69253 cut-off events. [2023-11-29 04:23:05,416 INFO L125 PetriNetUnfolderBase]: For 536338/538542 co-relation queries the response was YES. [2023-11-29 04:23:05,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333687 conditions, 69253 events. 49928/69253 cut-off events. For 536338/538542 co-relation queries the response was YES. Maximal size of possible extension queue 2930. Compared 464169 event pairs, 9429 based on Foata normal form. 1639/70566 useless extension candidates. Maximal degree in co-relation 299598. Up to 25070 conditions per place. [2023-11-29 04:23:06,279 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 407 selfloop transitions, 26 changer transitions 2/480 dead transitions. [2023-11-29 04:23:06,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 480 transitions, 7525 flow [2023-11-29 04:23:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:23:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:23:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2023-11-29 04:23:06,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6093023255813953 [2023-11-29 04:23:06,281 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 131 transitions. [2023-11-29 04:23:06,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 131 transitions. [2023-11-29 04:23:06,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:06,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 131 transitions. [2023-11-29 04:23:06,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2023-11-29 04:23:06,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:23:06,283 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:23:06,283 INFO L175 Difference]: Start difference. First operand has 126 places, 219 transitions, 3112 flow. Second operand 5 states and 131 transitions. [2023-11-29 04:23:06,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 480 transitions, 7525 flow [2023-11-29 04:23:16,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 480 transitions, 7168 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-29 04:23:16,274 INFO L231 Difference]: Finished difference. Result has 128 places, 231 transitions, 3203 flow [2023-11-29 04:23:16,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3006, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3203, PETRI_PLACES=128, PETRI_TRANSITIONS=231} [2023-11-29 04:23:16,274 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 81 predicate places. [2023-11-29 04:23:16,275 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 231 transitions, 3203 flow [2023-11-29 04:23:16,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-29 04:23:16,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:16,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:16,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 04:23:16,275 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:16,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1571246830, now seen corresponding path program 4 times [2023-11-29 04:23:16,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:16,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934040010] [2023-11-29 04:23:16,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:16,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:23:16,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:16,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934040010] [2023-11-29 04:23:16,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934040010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:16,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:16,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:23:16,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379562989] [2023-11-29 04:23:16,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:16,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:23:16,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:23:16,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:23:16,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:23:16,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 231 transitions, 3203 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-29 04:23:16,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:16,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:23:16,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:27,094 INFO L124 PetriNetUnfolderBase]: 59144/82075 cut-off events. [2023-11-29 04:23:27,094 INFO L125 PetriNetUnfolderBase]: For 664900/667314 co-relation queries the response was YES. [2023-11-29 04:23:27,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415794 conditions, 82075 events. 59144/82075 cut-off events. For 664900/667314 co-relation queries the response was YES. Maximal size of possible extension queue 3556. Compared 562786 event pairs, 16371 based on Foata normal form. 424/81819 useless extension candidates. Maximal degree in co-relation 371862. Up to 39622 conditions per place. [2023-11-29 04:23:27,908 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 250 selfloop transitions, 89 changer transitions 2/386 dead transitions. [2023-11-29 04:23:27,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 386 transitions, 5578 flow [2023-11-29 04:23:27,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:23:27,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:23:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2023-11-29 04:23:27,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2023-11-29 04:23:27,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 130 transitions. [2023-11-29 04:23:27,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 130 transitions. [2023-11-29 04:23:27,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:27,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 130 transitions. [2023-11-29 04:23:27,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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) [2023-11-29 04:23:27,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:23:27,912 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:23:27,912 INFO L175 Difference]: Start difference. First operand has 128 places, 231 transitions, 3203 flow. Second operand 5 states and 130 transitions. [2023-11-29 04:23:27,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 386 transitions, 5578 flow [2023-11-29 04:23:43,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 386 transitions, 5512 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 04:23:43,744 INFO L231 Difference]: Finished difference. Result has 134 places, 288 transitions, 4299 flow [2023-11-29 04:23:43,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3183, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4299, PETRI_PLACES=134, PETRI_TRANSITIONS=288} [2023-11-29 04:23:43,745 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 87 predicate places. [2023-11-29 04:23:43,745 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 288 transitions, 4299 flow [2023-11-29 04:23:43,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-29 04:23:43,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:23:43,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:43,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 04:23:43,746 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:23:43,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:43,746 INFO L85 PathProgramCache]: Analyzing trace with hash -204425134, now seen corresponding path program 5 times [2023-11-29 04:23:43,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:23:43,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784023297] [2023-11-29 04:23:43,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:43,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:23:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:23:43,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:23:43,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784023297] [2023-11-29 04:23:43,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784023297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:43,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:43,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:23:43,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529102912] [2023-11-29 04:23:43,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:43,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:23:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:23:43,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:23:43,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:23:43,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:23:43,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 288 transitions, 4299 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-29 04:23:43,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:23:43,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:23:43,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:23:57,241 INFO L124 PetriNetUnfolderBase]: 66211/91887 cut-off events. [2023-11-29 04:23:57,242 INFO L125 PetriNetUnfolderBase]: For 873141/875873 co-relation queries the response was YES. [2023-11-29 04:23:57,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493119 conditions, 91887 events. 66211/91887 cut-off events. For 873141/875873 co-relation queries the response was YES. Maximal size of possible extension queue 4072. Compared 638320 event pairs, 13678 based on Foata normal form. 1033/92438 useless extension candidates. Maximal degree in co-relation 430499. Up to 43559 conditions per place. [2023-11-29 04:23:58,225 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 391 selfloop transitions, 95 changer transitions 5/536 dead transitions. [2023-11-29 04:23:58,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 536 transitions, 8668 flow [2023-11-29 04:23:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:23:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:23:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2023-11-29 04:23:58,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6186046511627907 [2023-11-29 04:23:58,226 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 133 transitions. [2023-11-29 04:23:58,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 133 transitions. [2023-11-29 04:23:58,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:23:58,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 133 transitions. [2023-11-29 04:23:58,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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) [2023-11-29 04:23:58,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:23:58,228 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:23:58,228 INFO L175 Difference]: Start difference. First operand has 134 places, 288 transitions, 4299 flow. Second operand 5 states and 133 transitions. [2023-11-29 04:23:58,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 536 transitions, 8668 flow [2023-11-29 04:24:18,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 536 transitions, 8476 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 04:24:18,425 INFO L231 Difference]: Finished difference. Result has 139 places, 331 transitions, 5270 flow [2023-11-29 04:24:18,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4219, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5270, PETRI_PLACES=139, PETRI_TRANSITIONS=331} [2023-11-29 04:24:18,426 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 92 predicate places. [2023-11-29 04:24:18,426 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 331 transitions, 5270 flow [2023-11-29 04:24:18,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-29 04:24:18,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:24:18,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:24:18,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 04:24:18,427 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:24:18,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:24:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash 642791002, now seen corresponding path program 6 times [2023-11-29 04:24:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:24:18,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134986047] [2023-11-29 04:24:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:24:18,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:24:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:24:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:24:18,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:24:18,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134986047] [2023-11-29 04:24:18,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134986047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:24:18,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:24:18,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:24:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729219642] [2023-11-29 04:24:18,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:24:18,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:24:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:24:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:24:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:24:18,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:24:18,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 331 transitions, 5270 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-29 04:24:18,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:24:18,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:24:18,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:24:32,744 INFO L124 PetriNetUnfolderBase]: 65369/90775 cut-off events. [2023-11-29 04:24:32,745 INFO L125 PetriNetUnfolderBase]: For 1000107/1002825 co-relation queries the response was YES. [2023-11-29 04:24:33,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503637 conditions, 90775 events. 65369/90775 cut-off events. For 1000107/1002825 co-relation queries the response was YES. Maximal size of possible extension queue 4039. Compared 629937 event pairs, 14464 based on Foata normal form. 912/90795 useless extension candidates. Maximal degree in co-relation 441771. Up to 42261 conditions per place. [2023-11-29 04:24:33,768 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 278 selfloop transitions, 145 changer transitions 4/472 dead transitions. [2023-11-29 04:24:33,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 472 transitions, 7837 flow [2023-11-29 04:24:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:24:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:24:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2023-11-29 04:24:33,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-29 04:24:33,770 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 129 transitions. [2023-11-29 04:24:33,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 129 transitions. [2023-11-29 04:24:33,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:24:33,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 129 transitions. [2023-11-29 04:24:33,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2023-11-29 04:24:33,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:24:33,771 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:24:33,771 INFO L175 Difference]: Start difference. First operand has 139 places, 331 transitions, 5270 flow. Second operand 5 states and 129 transitions. [2023-11-29 04:24:33,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 472 transitions, 7837 flow [2023-11-29 04:24:58,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 472 transitions, 7685 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-11-29 04:24:58,740 INFO L231 Difference]: Finished difference. Result has 144 places, 383 transitions, 6633 flow [2023-11-29 04:24:58,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5144, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6633, PETRI_PLACES=144, PETRI_TRANSITIONS=383} [2023-11-29 04:24:58,741 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 97 predicate places. [2023-11-29 04:24:58,741 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 383 transitions, 6633 flow [2023-11-29 04:24:58,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-29 04:24:58,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:24:58,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:24:58,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 04:24:58,741 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:24:58,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:24:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1874264434, now seen corresponding path program 7 times [2023-11-29 04:24:58,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:24:58,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952073270] [2023-11-29 04:24:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:24:58,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:24:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:24:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:24:58,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:24:58,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952073270] [2023-11-29 04:24:58,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952073270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:24:58,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:24:58,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:24:58,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427593719] [2023-11-29 04:24:58,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:24:58,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:24:58,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:24:58,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:24:58,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:24:58,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:24:58,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 383 transitions, 6633 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2023-11-29 04:24:58,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:24:58,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:24:58,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:25:15,386 INFO L124 PetriNetUnfolderBase]: 71609/98086 cut-off events. [2023-11-29 04:25:15,386 INFO L125 PetriNetUnfolderBase]: For 1186140/1186456 co-relation queries the response was YES. [2023-11-29 04:25:15,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558269 conditions, 98086 events. 71609/98086 cut-off events. For 1186140/1186456 co-relation queries the response was YES. Maximal size of possible extension queue 4046. Compared 658083 event pairs, 15843 based on Foata normal form. 211/98167 useless extension candidates. Maximal degree in co-relation 493075. Up to 47925 conditions per place. [2023-11-29 04:25:16,664 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 321 selfloop transitions, 161 changer transitions 3/516 dead transitions. [2023-11-29 04:25:16,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 516 transitions, 8863 flow [2023-11-29 04:25:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:25:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:25:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2023-11-29 04:25:16,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-29 04:25:16,666 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 129 transitions. [2023-11-29 04:25:16,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 129 transitions. [2023-11-29 04:25:16,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:25:16,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 129 transitions. [2023-11-29 04:25:16,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2023-11-29 04:25:16,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:25:16,667 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:25:16,667 INFO L175 Difference]: Start difference. First operand has 144 places, 383 transitions, 6633 flow. Second operand 5 states and 129 transitions. [2023-11-29 04:25:16,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 516 transitions, 8863 flow [2023-11-29 04:25:47,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 516 transitions, 8695 flow, removed 39 selfloop flow, removed 1 redundant places. [2023-11-29 04:25:47,607 INFO L231 Difference]: Finished difference. Result has 148 places, 399 transitions, 7029 flow [2023-11-29 04:25:47,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6319, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7029, PETRI_PLACES=148, PETRI_TRANSITIONS=399} [2023-11-29 04:25:47,608 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 101 predicate places. [2023-11-29 04:25:47,608 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 399 transitions, 7029 flow [2023-11-29 04:25:47,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2023-11-29 04:25:47,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:25:47,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:25:47,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 04:25:47,609 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:25:47,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:25:47,609 INFO L85 PathProgramCache]: Analyzing trace with hash 187800684, now seen corresponding path program 8 times [2023-11-29 04:25:47,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:25:47,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446858068] [2023-11-29 04:25:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:25:47,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:25:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:25:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:25:47,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:25:47,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446858068] [2023-11-29 04:25:47,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446858068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:25:47,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:25:47,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:25:47,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120430057] [2023-11-29 04:25:47,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:25:47,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:25:47,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:25:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:25:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:25:47,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:25:47,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 399 transitions, 7029 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2023-11-29 04:25:47,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:25:47,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:25:47,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:26:05,322 INFO L124 PetriNetUnfolderBase]: 72719/99436 cut-off events. [2023-11-29 04:26:05,322 INFO L125 PetriNetUnfolderBase]: For 1337663/1338068 co-relation queries the response was YES. [2023-11-29 04:26:05,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578027 conditions, 99436 events. 72719/99436 cut-off events. For 1337663/1338068 co-relation queries the response was YES. Maximal size of possible extension queue 4059. Compared 665773 event pairs, 19335 based on Foata normal form. 356/99694 useless extension candidates. Maximal degree in co-relation 516878. Up to 43686 conditions per place. [2023-11-29 04:26:06,419 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 329 selfloop transitions, 167 changer transitions 3/530 dead transitions. [2023-11-29 04:26:06,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 530 transitions, 9442 flow [2023-11-29 04:26:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:26:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:26:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2023-11-29 04:26:06,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2023-11-29 04:26:06,421 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 132 transitions. [2023-11-29 04:26:06,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 132 transitions. [2023-11-29 04:26:06,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:26:06,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 132 transitions. [2023-11-29 04:26:06,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2023-11-29 04:26:06,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:26:06,423 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:26:06,423 INFO L175 Difference]: Start difference. First operand has 148 places, 399 transitions, 7029 flow. Second operand 5 states and 132 transitions. [2023-11-29 04:26:06,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 530 transitions, 9442 flow [2023-11-29 04:26:39,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 530 transitions, 9074 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-11-29 04:26:39,960 INFO L231 Difference]: Finished difference. Result has 148 places, 421 transitions, 7375 flow [2023-11-29 04:26:39,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6453, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7375, PETRI_PLACES=148, PETRI_TRANSITIONS=421} [2023-11-29 04:26:39,961 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 101 predicate places. [2023-11-29 04:26:39,961 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 421 transitions, 7375 flow [2023-11-29 04:26:39,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2023-11-29 04:26:39,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:26:39,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:39,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 04:26:39,962 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:26:39,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:39,962 INFO L85 PathProgramCache]: Analyzing trace with hash 960501980, now seen corresponding path program 9 times [2023-11-29 04:26:39,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:39,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783077843] [2023-11-29 04:26:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:39,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:26:40,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:40,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783077843] [2023-11-29 04:26:40,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783077843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:26:40,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:26:40,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:26:40,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148693613] [2023-11-29 04:26:40,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:26:40,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:26:40,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:40,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:26:40,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:26:40,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 43 [2023-11-29 04:26:40,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 421 transitions, 7375 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2023-11-29 04:26:40,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:26:40,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 43 [2023-11-29 04:26:40,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:26:57,602 INFO L124 PetriNetUnfolderBase]: 70465/97710 cut-off events. [2023-11-29 04:26:57,602 INFO L125 PetriNetUnfolderBase]: For 1292845/1295195 co-relation queries the response was YES. [2023-11-29 04:26:58,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566333 conditions, 97710 events. 70465/97710 cut-off events. For 1292845/1295195 co-relation queries the response was YES. Maximal size of possible extension queue 4239. Compared 680221 event pairs, 13359 based on Foata normal form. 612/97850 useless extension candidates. Maximal degree in co-relation 504966. Up to 42223 conditions per place. [2023-11-29 04:26:58,958 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 435 selfloop transitions, 135 changer transitions 0/633 dead transitions. [2023-11-29 04:26:58,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 633 transitions, 11289 flow [2023-11-29 04:26:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:26:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:26:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2023-11-29 04:26:58,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624031007751938 [2023-11-29 04:26:58,960 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 161 transitions. [2023-11-29 04:26:58,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 161 transitions. [2023-11-29 04:26:58,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:26:58,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 161 transitions. [2023-11-29 04:26:58,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 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) [2023-11-29 04:26:58,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2023-11-29 04:26:58,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2023-11-29 04:26:58,961 INFO L175 Difference]: Start difference. First operand has 148 places, 421 transitions, 7375 flow. Second operand 6 states and 161 transitions. [2023-11-29 04:26:58,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 633 transitions, 11289 flow [2023-11-29 04:27:27,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 633 transitions, 10811 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-11-29 04:27:27,030 INFO L231 Difference]: Finished difference. Result has 149 places, 437 transitions, 7667 flow [2023-11-29 04:27:27,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7025, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7667, PETRI_PLACES=149, PETRI_TRANSITIONS=437} [2023-11-29 04:27:27,031 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 102 predicate places. [2023-11-29 04:27:27,031 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 437 transitions, 7667 flow [2023-11-29 04:27:27,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2023-11-29 04:27:27,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:27:27,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:27:27,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 04:27:27,031 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:27:27,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:27,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2077578544, now seen corresponding path program 10 times [2023-11-29 04:27:27,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:27:27,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840669800] [2023-11-29 04:27:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:27,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:27:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:27:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:27:27,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:27:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840669800] [2023-11-29 04:27:27,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840669800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:27:27,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561168068] [2023-11-29 04:27:27,127 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:27:27,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:27,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:27:27,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:27:27,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:27:27,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:27:27,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:27:27,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:27:27,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:27:27,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:27:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:27:27,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561168068] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:27:27,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:27:27,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-29 04:27:27,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330474103] [2023-11-29 04:27:27,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:27:27,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:27:27,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:27:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:27:27,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:27:27,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:27:27,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 437 transitions, 7667 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 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) [2023-11-29 04:27:27,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:27:27,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:27:27,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:27:57,051 INFO L124 PetriNetUnfolderBase]: 120351/163340 cut-off events. [2023-11-29 04:27:57,051 INFO L125 PetriNetUnfolderBase]: For 1919812/1920022 co-relation queries the response was YES. [2023-11-29 04:27:58,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908018 conditions, 163340 events. 120351/163340 cut-off events. For 1919812/1920022 co-relation queries the response was YES. Maximal size of possible extension queue 6912. Compared 1140732 event pairs, 9307 based on Foata normal form. 280/163556 useless extension candidates. Maximal degree in co-relation 802482. Up to 42060 conditions per place. [2023-11-29 04:27:59,406 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 666 selfloop transitions, 358 changer transitions 0/1039 dead transitions. [2023-11-29 04:27:59,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 1039 transitions, 18189 flow [2023-11-29 04:27:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:27:59,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 04:27:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 363 transitions. [2023-11-29 04:27:59,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5627906976744186 [2023-11-29 04:27:59,408 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 363 transitions. [2023-11-29 04:27:59,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 363 transitions. [2023-11-29 04:27:59,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:27:59,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 363 transitions. [2023-11-29 04:27:59,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 24.2) internal successors, (363), 15 states have internal predecessors, (363), 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) [2023-11-29 04:27:59,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 43.0) internal successors, (688), 16 states have internal predecessors, (688), 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) [2023-11-29 04:27:59,411 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 43.0) internal successors, (688), 16 states have internal predecessors, (688), 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) [2023-11-29 04:27:59,411 INFO L175 Difference]: Start difference. First operand has 149 places, 437 transitions, 7667 flow. Second operand 15 states and 363 transitions. [2023-11-29 04:27:59,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 1039 transitions, 18189 flow [2023-11-29 04:28:57,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 1039 transitions, 17419 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-11-29 04:28:57,249 INFO L231 Difference]: Finished difference. Result has 166 places, 536 transitions, 10280 flow [2023-11-29 04:28:57,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7409, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10280, PETRI_PLACES=166, PETRI_TRANSITIONS=536} [2023-11-29 04:28:57,250 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 119 predicate places. [2023-11-29 04:28:57,250 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 536 transitions, 10280 flow [2023-11-29 04:28:57,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 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) [2023-11-29 04:28:57,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:28:57,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:57,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:28:57,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 04:28:57,451 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:28:57,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:57,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1519208578, now seen corresponding path program 11 times [2023-11-29 04:28:57,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:57,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376304501] [2023-11-29 04:28:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:57,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:57,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376304501] [2023-11-29 04:28:57,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376304501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:28:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246241101] [2023-11-29 04:28:57,547 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:28:57,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:28:57,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:28:57,548 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:28:57,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:28:57,682 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:28:57,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:28:57,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:28:57,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:28:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:28:57,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:28:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:28:57,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246241101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:28:57,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:28:57,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-29 04:28:57,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340984311] [2023-11-29 04:28:57,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:28:57,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:28:57,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:57,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:28:57,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:28:57,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:28:57,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 536 transitions, 10280 flow. Second operand has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 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) [2023-11-29 04:28:57,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:28:57,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:28:57,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:29:43,603 INFO L124 PetriNetUnfolderBase]: 151960/207051 cut-off events. [2023-11-29 04:29:43,603 INFO L125 PetriNetUnfolderBase]: For 2736041/2736595 co-relation queries the response was YES. [2023-11-29 04:29:45,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189283 conditions, 207051 events. 151960/207051 cut-off events. For 2736041/2736595 co-relation queries the response was YES. Maximal size of possible extension queue 7882. Compared 1466777 event pairs, 17414 based on Foata normal form. 379/207257 useless extension candidates. Maximal degree in co-relation 1063420. Up to 50315 conditions per place. [2023-11-29 04:29:46,456 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 570 selfloop transitions, 709 changer transitions 0/1312 dead transitions. [2023-11-29 04:29:46,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1312 transitions, 24508 flow [2023-11-29 04:29:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:29:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 04:29:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 371 transitions. [2023-11-29 04:29:46,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751937984496124 [2023-11-29 04:29:46,458 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 371 transitions. [2023-11-29 04:29:46,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 371 transitions. [2023-11-29 04:29:46,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:29:46,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 371 transitions. [2023-11-29 04:29:46,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 24.733333333333334) internal successors, (371), 15 states have internal predecessors, (371), 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) [2023-11-29 04:29:46,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 43.0) internal successors, (688), 16 states have internal predecessors, (688), 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) [2023-11-29 04:29:46,461 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 43.0) internal successors, (688), 16 states have internal predecessors, (688), 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) [2023-11-29 04:29:46,462 INFO L175 Difference]: Start difference. First operand has 166 places, 536 transitions, 10280 flow. Second operand 15 states and 371 transitions. [2023-11-29 04:29:46,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1312 transitions, 24508 flow [2023-11-29 04:33:23,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 1312 transitions, 24342 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-11-29 04:33:23,044 INFO L231 Difference]: Finished difference. Result has 186 places, 906 transitions, 20097 flow [2023-11-29 04:33:23,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10206, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=20097, PETRI_PLACES=186, PETRI_TRANSITIONS=906} [2023-11-29 04:33:23,046 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 139 predicate places. [2023-11-29 04:33:23,046 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 906 transitions, 20097 flow [2023-11-29 04:33:23,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 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) [2023-11-29 04:33:23,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:33:23,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:33:23,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:33:23,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 04:33:23,247 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 04:33:23,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash -174987324, now seen corresponding path program 12 times [2023-11-29 04:33:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:33:23,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954642735] [2023-11-29 04:33:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:23,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:33:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:33:23,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:33:23,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954642735] [2023-11-29 04:33:23,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954642735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:33:23,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970455752] [2023-11-29 04:33:23,338 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 04:33:23,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:33:23,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:33:23,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:33:23,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730c3012-5ad0-49e9-8438-828f43eab340/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:33:23,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 04:33:23,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:33:23,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:33:23,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:33:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:23,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:33:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970455752] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:33:23,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:33:23,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-29 04:33:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395331805] [2023-11-29 04:33:23,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:33:23,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:33:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:33:23,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:33:23,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:33:23,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 43 [2023-11-29 04:33:23,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 906 transitions, 20097 flow. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:33:23,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:33:23,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 43 [2023-11-29 04:33:23,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand