./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/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_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/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_f4221665-6a22-4af6-8974-ed4f58ff3451/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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:29:09,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:29:09,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:29:09,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:29:09,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:29:09,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:29:09,749 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:29:09,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:29:09,750 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:29:09,751 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:29:09,751 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:29:09,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:29:09,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:29:09,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:29:09,754 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:29:09,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:29:09,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:29:09,755 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:29:09,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:29:09,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:29:09,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:29:09,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:29:09,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:29:09,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:29:09,760 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:29:09,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:29:09,760 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:29:09,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:29:09,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:29:09,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:29:09,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:29:09,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:29:09,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:29:09,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:29:09,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:29:09,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:29:09,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:29:09,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:29:09,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:29:09,765 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:29:09,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:29:09,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:29:09,766 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_f4221665-6a22-4af6-8974-ed4f58ff3451/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2023-11-29 05:29:09,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:29:09,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:29:09,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:29:09,985 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:29:09,985 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:29:09,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2023-11-29 05:29:12,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:29:12,902 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:29:12,903 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2023-11-29 05:29:12,912 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/data/3bef8bfa4/744ad06211e5437c95df3fb437f3f9a0/FLAGa95e63f33 [2023-11-29 05:29:12,924 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/data/3bef8bfa4/744ad06211e5437c95df3fb437f3f9a0 [2023-11-29 05:29:12,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:29:12,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:29:12,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:29:12,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:29:12,933 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:29:12,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:29:12" (1/1) ... [2023-11-29 05:29:12,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c060ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:12, skipping insertion in model container [2023-11-29 05:29:12,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:29:12" (1/1) ... [2023-11-29 05:29:12,963 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:29:13,145 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_f4221665-6a22-4af6-8974-ed4f58ff3451/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6540,6553] [2023-11-29 05:29:13,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:29:13,166 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:29:13,207 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_f4221665-6a22-4af6-8974-ed4f58ff3451/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6540,6553] [2023-11-29 05:29:13,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:29:13,225 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:29:13,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13 WrapperNode [2023-11-29 05:29:13,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:29:13,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:29:13,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:29:13,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:29:13,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,246 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,287 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 606 [2023-11-29 05:29:13,288 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:29:13,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:29:13,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:29:13,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:29:13,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,330 INFO L175 MemorySlicer]: Split 35 memory accesses to 5 slices as follows [2, 2, 27, 2, 2]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 3, 1, 1]. [2023-11-29 05:29:13,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:29:13,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:29:13,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:29:13,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:29:13,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (1/1) ... [2023-11-29 05:29:13,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:29:13,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:29:13,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:29:13,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:29:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:29:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:29:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:29:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:29:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:29:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:29:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 05:29:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:29:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:29:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:29:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:29:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 05:29:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 05:29:13,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 05:29:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 05:29:13,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 05:29:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 05:29:13,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 05:29:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:29:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:29:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:29:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:29:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:29:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:29:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:29:13,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:29:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:29:13,446 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 05:29:13,587 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:29:13,589 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:29:14,350 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:29:15,231 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:29:15,231 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 05:29:15,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:29:15 BoogieIcfgContainer [2023-11-29 05:29:15,232 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:29:15,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:29:15,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:29:15,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:29:15,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:29:12" (1/3) ... [2023-11-29 05:29:15,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff246ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:29:15, skipping insertion in model container [2023-11-29 05:29:15,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:29:13" (2/3) ... [2023-11-29 05:29:15,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff246ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:29:15, skipping insertion in model container [2023-11-29 05:29:15,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:29:15" (3/3) ... [2023-11-29 05:29:15,241 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2023-11-29 05:29:15,250 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:29:15,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:29:15,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:29:15,261 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:29:15,392 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 05:29:15,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 123 flow [2023-11-29 05:29:15,467 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events. [2023-11-29 05:29:15,467 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:29:15,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 12/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-29 05:29:15,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 123 flow [2023-11-29 05:29:15,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2023-11-29 05:29:15,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:29:15,491 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;@287b6b06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:29:15,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 05:29:15,515 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:29:15,515 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2023-11-29 05:29:15,515 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:29:15,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:15,516 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 05:29:15,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:15,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:15,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1416757406, now seen corresponding path program 1 times [2023-11-29 05:29:15,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:15,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982981588] [2023-11-29 05:29:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:15,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:15,963 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 05:29:15,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:15,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982981588] [2023-11-29 05:29:15,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982981588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:15,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:15,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:29:15,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737935023] [2023-11-29 05:29:15,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:15,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:29:15,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:16,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:29:16,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:29:16,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:16,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 05:29:16,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:16,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:16,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:16,857 INFO L124 PetriNetUnfolderBase]: 1664/2361 cut-off events. [2023-11-29 05:29:16,857 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-29 05:29:16,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 2361 events. 1664/2361 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9842 event pairs, 1125 based on Foata normal form. 268/2082 useless extension candidates. Maximal degree in co-relation 4159. Up to 2271 conditions per place. [2023-11-29 05:29:16,881 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 37 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-11-29 05:29:16,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 198 flow [2023-11-29 05:29:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:29:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:29:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2023-11-29 05:29:16,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2023-11-29 05:29:16,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 70 transitions. [2023-11-29 05:29:16,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 70 transitions. [2023-11-29 05:29:16,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:16,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 70 transitions. [2023-11-29 05:29:16,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 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 05:29:16,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 05:29:16,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 05:29:16,906 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 3 states and 70 transitions. [2023-11-29 05:29:16,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 198 flow [2023-11-29 05:29:16,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 186 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 05:29:16,914 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 126 flow [2023-11-29 05:29:16,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2023-11-29 05:29:16,920 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-11-29 05:29:16,920 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 126 flow [2023-11-29 05:29:16,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 05:29:16,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:16,921 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 05:29:16,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:29:16,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:16,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1741264555, now seen corresponding path program 1 times [2023-11-29 05:29:16,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:16,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859764383] [2023-11-29 05:29:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:16,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:29:17,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:17,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859764383] [2023-11-29 05:29:17,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859764383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:29:17,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873222188] [2023-11-29 05:29:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:17,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:17,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:29:17,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:29:17,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:29:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:17,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:29:17,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:29:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:29:17,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:29:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:29:17,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873222188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:29:17,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:29:17,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-29 05:29:17,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348225614] [2023-11-29 05:29:17,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:29:17,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:29:17,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:17,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:29:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:29:17,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:17,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 126 flow. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 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 05:29:17,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:17,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:17,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:18,102 INFO L124 PetriNetUnfolderBase]: 1664/2370 cut-off events. [2023-11-29 05:29:18,102 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-29 05:29:18,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2370 events. 1664/2370 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9852 event pairs, 1125 based on Foata normal form. 6/1831 useless extension candidates. Maximal degree in co-relation 4672. Up to 2271 conditions per place. [2023-11-29 05:29:18,114 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 37 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2023-11-29 05:29:18,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 266 flow [2023-11-29 05:29:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:29:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:29:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2023-11-29 05:29:18,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3366013071895425 [2023-11-29 05:29:18,117 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 103 transitions. [2023-11-29 05:29:18,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 103 transitions. [2023-11-29 05:29:18,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:18,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 103 transitions. [2023-11-29 05:29:18,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 05:29:18,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 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 05:29:18,121 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 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 05:29:18,121 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 126 flow. Second operand 6 states and 103 transitions. [2023-11-29 05:29:18,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 266 flow [2023-11-29 05:29:18,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:29:18,124 INFO L231 Difference]: Finished difference. Result has 49 places, 56 transitions, 216 flow [2023-11-29 05:29:18,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=49, PETRI_TRANSITIONS=56} [2023-11-29 05:29:18,125 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-11-29 05:29:18,126 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 56 transitions, 216 flow [2023-11-29 05:29:18,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 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 05:29:18,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:18,126 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 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 05:29:18,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:29:18,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 05:29:18,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:18,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:18,329 INFO L85 PathProgramCache]: Analyzing trace with hash -397893168, now seen corresponding path program 2 times [2023-11-29 05:29:18,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:18,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603933813] [2023-11-29 05:29:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:18,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:29:18,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603933813] [2023-11-29 05:29:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603933813] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:29:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880575735] [2023-11-29 05:29:18,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:29:18,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:18,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:29:18,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:29:18,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:29:18,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:29:18,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:29:18,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:29:18,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:29:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 05:29:21,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:29:21,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880575735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:21,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:29:21,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-29 05:29:21,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264712516] [2023-11-29 05:29:21,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:21,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:29:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:29:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:29:21,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:21,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 56 transitions, 216 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 05:29:21,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:21,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:21,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:22,653 INFO L124 PetriNetUnfolderBase]: 2392/3465 cut-off events. [2023-11-29 05:29:22,653 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-29 05:29:22,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6973 conditions, 3465 events. 2392/3465 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16289 event pairs, 1125 based on Foata normal form. 1/2726 useless extension candidates. Maximal degree in co-relation 6885. Up to 2197 conditions per place. [2023-11-29 05:29:22,679 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 93 selfloop transitions, 2 changer transitions 10/109 dead transitions. [2023-11-29 05:29:22,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 109 transitions, 544 flow [2023-11-29 05:29:22,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:29:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:29:22,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2023-11-29 05:29:22,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2023-11-29 05:29:22,682 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 129 transitions. [2023-11-29 05:29:22,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 129 transitions. [2023-11-29 05:29:22,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:22,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 129 transitions. [2023-11-29 05:29:22,683 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 05:29:22,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:29:22,685 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:29:22,685 INFO L175 Difference]: Start difference. First operand has 49 places, 56 transitions, 216 flow. Second operand 5 states and 129 transitions. [2023-11-29 05:29:22,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 109 transitions, 544 flow [2023-11-29 05:29:22,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 109 transitions, 520 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-29 05:29:22,691 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 207 flow [2023-11-29 05:29:22,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2023-11-29 05:29:22,692 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2023-11-29 05:29:22,692 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 207 flow [2023-11-29 05:29:22,692 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 05:29:22,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:22,693 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 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 05:29:22,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:29:22,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:22,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:22,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1787279914, now seen corresponding path program 3 times [2023-11-29 05:29:22,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:22,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751844084] [2023-11-29 05:29:22,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:22,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:29:23,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:23,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751844084] [2023-11-29 05:29:23,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751844084] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:29:23,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327016832] [2023-11-29 05:29:23,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:29:23,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:23,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:29:23,070 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:29:23,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:29:23,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 05:29:23,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:29:23,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:29:23,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:29:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 05:29:24,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:29:24,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327016832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:24,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:29:24,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-11-29 05:29:24,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522351295] [2023-11-29 05:29:24,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:24,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:29:24,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:24,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:29:24,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:29:24,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:24,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 207 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 05:29:24,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:24,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:24,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:26,490 INFO L124 PetriNetUnfolderBase]: 3066/4543 cut-off events. [2023-11-29 05:29:26,490 INFO L125 PetriNetUnfolderBase]: For 775/775 co-relation queries the response was YES. [2023-11-29 05:29:26,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9598 conditions, 4543 events. 3066/4543 cut-off events. For 775/775 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 23033 event pairs, 1655 based on Foata normal form. 1/4078 useless extension candidates. Maximal degree in co-relation 9559. Up to 2965 conditions per place. [2023-11-29 05:29:26,516 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 89 selfloop transitions, 3 changer transitions 10/106 dead transitions. [2023-11-29 05:29:26,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 531 flow [2023-11-29 05:29:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:29:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:29:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2023-11-29 05:29:26,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2023-11-29 05:29:26,518 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 125 transitions. [2023-11-29 05:29:26,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 125 transitions. [2023-11-29 05:29:26,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:26,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 125 transitions. [2023-11-29 05:29:26,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 05:29:26,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:29:26,522 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:29:26,522 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 207 flow. Second operand 5 states and 125 transitions. [2023-11-29 05:29:26,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 531 flow [2023-11-29 05:29:26,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 106 transitions, 522 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 05:29:26,527 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 224 flow [2023-11-29 05:29:26,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-11-29 05:29:26,528 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2023-11-29 05:29:26,529 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 224 flow [2023-11-29 05:29:26,529 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 05:29:26,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:26,529 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 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 05:29:26,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:29:26,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:26,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:26,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:26,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1452446996, now seen corresponding path program 4 times [2023-11-29 05:29:26,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:26,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586239513] [2023-11-29 05:29:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:26,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:29:26,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:26,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586239513] [2023-11-29 05:29:26,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586239513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:29:26,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191233340] [2023-11-29 05:29:26,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:29:26,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:26,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:29:26,971 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:29:26,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:29:27,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:29:27,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:29:27,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:29:27,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:29:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:29:27,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:29:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 05:29:27,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191233340] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:29:27,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:29:27,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-29 05:29:27,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405894411] [2023-11-29 05:29:27,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:29:27,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:29:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:27,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:29:27,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:29:27,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:27,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 224 flow. Second operand has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 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 05:29:27,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:27,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:27,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:28,507 INFO L124 PetriNetUnfolderBase]: 3032/4523 cut-off events. [2023-11-29 05:29:28,507 INFO L125 PetriNetUnfolderBase]: For 1875/1875 co-relation queries the response was YES. [2023-11-29 05:29:28,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9980 conditions, 4523 events. 3032/4523 cut-off events. For 1875/1875 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 22725 event pairs, 2407 based on Foata normal form. 1/4058 useless extension candidates. Maximal degree in co-relation 9939. Up to 4383 conditions per place. [2023-11-29 05:29:28,531 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 39 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2023-11-29 05:29:28,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 356 flow [2023-11-29 05:29:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:29:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:29:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2023-11-29 05:29:28,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29971988795518206 [2023-11-29 05:29:28,533 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 107 transitions. [2023-11-29 05:29:28,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 107 transitions. [2023-11-29 05:29:28,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:28,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 107 transitions. [2023-11-29 05:29:28,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 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 05:29:28,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 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 05:29:28,536 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 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 05:29:28,536 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 224 flow. Second operand 7 states and 107 transitions. [2023-11-29 05:29:28,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 356 flow [2023-11-29 05:29:28,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 350 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 05:29:28,541 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 286 flow [2023-11-29 05:29:28,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-11-29 05:29:28,543 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2023-11-29 05:29:28,543 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 286 flow [2023-11-29 05:29:28,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 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 05:29:28,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:28,544 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 05:29:28,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:29:28,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:28,748 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:28,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:28,748 INFO L85 PathProgramCache]: Analyzing trace with hash -405483631, now seen corresponding path program 5 times [2023-11-29 05:29:28,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:28,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202144860] [2023-11-29 05:29:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:28,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:29:30,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:30,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202144860] [2023-11-29 05:29:30,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202144860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:30,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:30,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:29:30,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570583873] [2023-11-29 05:29:30,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:30,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:29:30,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:30,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:29:30,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:29:30,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:30,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 286 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 05:29:30,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:30,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:30,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:32,697 INFO L124 PetriNetUnfolderBase]: 6856/10336 cut-off events. [2023-11-29 05:29:32,697 INFO L125 PetriNetUnfolderBase]: For 2139/2139 co-relation queries the response was YES. [2023-11-29 05:29:32,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21636 conditions, 10336 events. 6856/10336 cut-off events. For 2139/2139 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 62276 event pairs, 1953 based on Foata normal form. 1/8987 useless extension candidates. Maximal degree in co-relation 21523. Up to 3978 conditions per place. [2023-11-29 05:29:32,744 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 141 selfloop transitions, 36 changer transitions 1/182 dead transitions. [2023-11-29 05:29:32,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 182 transitions, 952 flow [2023-11-29 05:29:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:29:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:29:32,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2023-11-29 05:29:32,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5826330532212886 [2023-11-29 05:29:32,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 208 transitions. [2023-11-29 05:29:32,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 208 transitions. [2023-11-29 05:29:32,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:32,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 208 transitions. [2023-11-29 05:29:32,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 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 05:29:32,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 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 05:29:32,749 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 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 05:29:32,749 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 286 flow. Second operand 7 states and 208 transitions. [2023-11-29 05:29:32,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 182 transitions, 952 flow [2023-11-29 05:29:32,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 182 transitions, 916 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-29 05:29:32,757 INFO L231 Difference]: Finished difference. Result has 70 places, 100 transitions, 541 flow [2023-11-29 05:29:32,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=70, PETRI_TRANSITIONS=100} [2023-11-29 05:29:32,758 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2023-11-29 05:29:32,759 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 100 transitions, 541 flow [2023-11-29 05:29:32,759 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 05:29:32,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:32,759 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 05:29:32,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:29:32,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:32,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1166366095, now seen corresponding path program 6 times [2023-11-29 05:29:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:32,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589717154] [2023-11-29 05:29:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:32,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:29:34,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:34,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589717154] [2023-11-29 05:29:34,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589717154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:34,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:34,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:29:34,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159817780] [2023-11-29 05:29:34,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:34,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:29:34,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:29:34,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:29:34,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:34,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 100 transitions, 541 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 05:29:34,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:34,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:34,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:37,405 INFO L124 PetriNetUnfolderBase]: 8382/12460 cut-off events. [2023-11-29 05:29:37,405 INFO L125 PetriNetUnfolderBase]: For 11534/11558 co-relation queries the response was YES. [2023-11-29 05:29:37,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32900 conditions, 12460 events. 8382/12460 cut-off events. For 11534/11558 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 76738 event pairs, 3219 based on Foata normal form. 9/12135 useless extension candidates. Maximal degree in co-relation 32800. Up to 5412 conditions per place. [2023-11-29 05:29:37,463 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 142 selfloop transitions, 43 changer transitions 2/191 dead transitions. [2023-11-29 05:29:37,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 191 transitions, 1271 flow [2023-11-29 05:29:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:29:37,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:29:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2023-11-29 05:29:37,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647058823529412 [2023-11-29 05:29:37,465 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 144 transitions. [2023-11-29 05:29:37,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 144 transitions. [2023-11-29 05:29:37,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:37,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 144 transitions. [2023-11-29 05:29:37,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 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 05:29:37,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:29:37,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:29:37,468 INFO L175 Difference]: Start difference. First operand has 70 places, 100 transitions, 541 flow. Second operand 5 states and 144 transitions. [2023-11-29 05:29:37,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 191 transitions, 1271 flow [2023-11-29 05:29:37,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 191 transitions, 1263 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-29 05:29:37,513 INFO L231 Difference]: Finished difference. Result has 78 places, 131 transitions, 925 flow [2023-11-29 05:29:37,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=925, PETRI_PLACES=78, PETRI_TRANSITIONS=131} [2023-11-29 05:29:37,514 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2023-11-29 05:29:37,514 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 131 transitions, 925 flow [2023-11-29 05:29:37,514 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 05:29:37,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:37,515 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 05:29:37,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:29:37,515 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:37,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:37,515 INFO L85 PathProgramCache]: Analyzing trace with hash -376044409, now seen corresponding path program 7 times [2023-11-29 05:29:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:37,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485521735] [2023-11-29 05:29:37,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:37,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:29:38,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:38,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485521735] [2023-11-29 05:29:38,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485521735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:38,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:38,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:29:38,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051059105] [2023-11-29 05:29:38,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:38,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:29:38,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:38,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:29:38,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:29:38,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:38,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 131 transitions, 925 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 05:29:38,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:38,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:38,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:41,818 INFO L124 PetriNetUnfolderBase]: 9020/13494 cut-off events. [2023-11-29 05:29:41,818 INFO L125 PetriNetUnfolderBase]: For 25362/25372 co-relation queries the response was YES. [2023-11-29 05:29:41,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40234 conditions, 13494 events. 9020/13494 cut-off events. For 25362/25372 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 85659 event pairs, 3669 based on Foata normal form. 3/13177 useless extension candidates. Maximal degree in co-relation 40130. Up to 7368 conditions per place. [2023-11-29 05:29:41,890 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 181 selfloop transitions, 40 changer transitions 2/227 dead transitions. [2023-11-29 05:29:41,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 227 transitions, 1852 flow [2023-11-29 05:29:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:29:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:29:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2023-11-29 05:29:41,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2023-11-29 05:29:41,892 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 149 transitions. [2023-11-29 05:29:41,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 149 transitions. [2023-11-29 05:29:41,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:41,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 149 transitions. [2023-11-29 05:29:41,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 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 05:29:41,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:29:41,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:29:41,893 INFO L175 Difference]: Start difference. First operand has 78 places, 131 transitions, 925 flow. Second operand 5 states and 149 transitions. [2023-11-29 05:29:41,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 227 transitions, 1852 flow [2023-11-29 05:29:41,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 227 transitions, 1840 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-29 05:29:41,975 INFO L231 Difference]: Finished difference. Result has 85 places, 155 transitions, 1310 flow [2023-11-29 05:29:41,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1310, PETRI_PLACES=85, PETRI_TRANSITIONS=155} [2023-11-29 05:29:41,976 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2023-11-29 05:29:41,977 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 155 transitions, 1310 flow [2023-11-29 05:29:41,977 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 05:29:41,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:41,977 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 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 05:29:41,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:29:41,977 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:41,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash -668652335, now seen corresponding path program 8 times [2023-11-29 05:29:41,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:41,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124540205] [2023-11-29 05:29:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:41,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:29:42,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:42,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124540205] [2023-11-29 05:29:42,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124540205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:42,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:42,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:29:42,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060313567] [2023-11-29 05:29:42,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:42,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:29:42,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:42,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:29:42,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:29:42,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:42,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 155 transitions, 1310 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 05:29:42,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:42,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:42,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:45,984 INFO L124 PetriNetUnfolderBase]: 9230/13778 cut-off events. [2023-11-29 05:29:45,984 INFO L125 PetriNetUnfolderBase]: For 39310/39320 co-relation queries the response was YES. [2023-11-29 05:29:46,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44472 conditions, 13778 events. 9230/13778 cut-off events. For 39310/39320 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 87362 event pairs, 3411 based on Foata normal form. 1/13355 useless extension candidates. Maximal degree in co-relation 44364. Up to 6564 conditions per place. [2023-11-29 05:29:46,072 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 162 selfloop transitions, 48 changer transitions 2/216 dead transitions. [2023-11-29 05:29:46,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 216 transitions, 2007 flow [2023-11-29 05:29:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:29:46,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:29:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2023-11-29 05:29:46,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568627450980392 [2023-11-29 05:29:46,074 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 142 transitions. [2023-11-29 05:29:46,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 142 transitions. [2023-11-29 05:29:46,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:46,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 142 transitions. [2023-11-29 05:29:46,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 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 05:29:46,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:29:46,076 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:29:46,077 INFO L175 Difference]: Start difference. First operand has 85 places, 155 transitions, 1310 flow. Second operand 5 states and 142 transitions. [2023-11-29 05:29:46,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 216 transitions, 2007 flow [2023-11-29 05:29:46,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 216 transitions, 1999 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-29 05:29:46,367 INFO L231 Difference]: Finished difference. Result has 91 places, 164 transitions, 1548 flow [2023-11-29 05:29:46,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1548, PETRI_PLACES=91, PETRI_TRANSITIONS=164} [2023-11-29 05:29:46,368 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2023-11-29 05:29:46,369 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 164 transitions, 1548 flow [2023-11-29 05:29:46,369 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 05:29:46,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:46,369 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 05:29:46,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:29:46,370 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:46,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:46,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1929735424, now seen corresponding path program 1 times [2023-11-29 05:29:46,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:46,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938016715] [2023-11-29 05:29:46,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:46,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:29:46,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:46,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938016715] [2023-11-29 05:29:46,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938016715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:46,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:46,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:29:46,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299814306] [2023-11-29 05:29:46,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:46,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:29:46,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:46,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:29:46,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:29:46,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:46,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 164 transitions, 1548 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 05:29:46,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:46,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:46,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:49,730 INFO L124 PetriNetUnfolderBase]: 9718/14676 cut-off events. [2023-11-29 05:29:49,730 INFO L125 PetriNetUnfolderBase]: For 50687/50697 co-relation queries the response was YES. [2023-11-29 05:29:49,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49717 conditions, 14676 events. 9718/14676 cut-off events. For 50687/50697 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 95258 event pairs, 3381 based on Foata normal form. 11/14365 useless extension candidates. Maximal degree in co-relation 49606. Up to 9386 conditions per place. [2023-11-29 05:29:49,815 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 155 selfloop transitions, 13 changer transitions 59/231 dead transitions. [2023-11-29 05:29:49,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 231 transitions, 2481 flow [2023-11-29 05:29:49,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:29:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:29:49,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2023-11-29 05:29:49,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2023-11-29 05:29:49,816 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 115 transitions. [2023-11-29 05:29:49,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 115 transitions. [2023-11-29 05:29:49,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:49,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 115 transitions. [2023-11-29 05:29:49,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 05:29:49,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:29:49,818 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:29:49,818 INFO L175 Difference]: Start difference. First operand has 91 places, 164 transitions, 1548 flow. Second operand 4 states and 115 transitions. [2023-11-29 05:29:49,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 231 transitions, 2481 flow [2023-11-29 05:29:50,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 231 transitions, 2392 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-29 05:29:50,122 INFO L231 Difference]: Finished difference. Result has 96 places, 146 transitions, 1365 flow [2023-11-29 05:29:50,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1365, PETRI_PLACES=96, PETRI_TRANSITIONS=146} [2023-11-29 05:29:50,123 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2023-11-29 05:29:50,123 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 146 transitions, 1365 flow [2023-11-29 05:29:50,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 05:29:50,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:50,123 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 05:29:50,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:29:50,124 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:50,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1559093726, now seen corresponding path program 1 times [2023-11-29 05:29:50,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:50,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058428735] [2023-11-29 05:29:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:50,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:29:50,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:50,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058428735] [2023-11-29 05:29:50,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058428735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:50,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:50,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:29:50,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326556664] [2023-11-29 05:29:50,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:50,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:29:50,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:50,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:29:50,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:29:50,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:50,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 146 transitions, 1365 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 05:29:50,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:50,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:50,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:52,809 INFO L124 PetriNetUnfolderBase]: 8848/13545 cut-off events. [2023-11-29 05:29:52,809 INFO L125 PetriNetUnfolderBase]: For 43482/43482 co-relation queries the response was YES. [2023-11-29 05:29:52,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44081 conditions, 13545 events. 8848/13545 cut-off events. For 43482/43482 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 88098 event pairs, 3261 based on Foata normal form. 4/13235 useless extension candidates. Maximal degree in co-relation 43985. Up to 8880 conditions per place. [2023-11-29 05:29:52,901 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 154 selfloop transitions, 15 changer transitions 45/218 dead transitions. [2023-11-29 05:29:52,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 218 transitions, 2347 flow [2023-11-29 05:29:52,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:29:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:29:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-29 05:29:52,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553921568627451 [2023-11-29 05:29:52,903 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-29 05:29:52,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-29 05:29:52,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:52,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-29 05:29:52,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 05:29:52,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:29:52,904 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:29:52,904 INFO L175 Difference]: Start difference. First operand has 96 places, 146 transitions, 1365 flow. Second operand 4 states and 113 transitions. [2023-11-29 05:29:52,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 218 transitions, 2347 flow [2023-11-29 05:29:53,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 218 transitions, 2289 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-29 05:29:53,217 INFO L231 Difference]: Finished difference. Result has 97 places, 139 transitions, 1296 flow [2023-11-29 05:29:53,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1296, PETRI_PLACES=97, PETRI_TRANSITIONS=139} [2023-11-29 05:29:53,218 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2023-11-29 05:29:53,218 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 139 transitions, 1296 flow [2023-11-29 05:29:53,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 05:29:53,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:53,218 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 05:29:53,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:29:53,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:53,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1327783118, now seen corresponding path program 2 times [2023-11-29 05:29:53,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:53,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232417781] [2023-11-29 05:29:53,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:53,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:29:53,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:53,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232417781] [2023-11-29 05:29:53,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232417781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:53,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:53,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:29:53,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170133668] [2023-11-29 05:29:53,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:53,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:29:53,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:53,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:29:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:29:53,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:53,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 139 transitions, 1296 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 05:29:53,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:53,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:53,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:55,574 INFO L124 PetriNetUnfolderBase]: 7468/11397 cut-off events. [2023-11-29 05:29:55,574 INFO L125 PetriNetUnfolderBase]: For 35316/35340 co-relation queries the response was YES. [2023-11-29 05:29:55,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36818 conditions, 11397 events. 7468/11397 cut-off events. For 35316/35340 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 71217 event pairs, 3963 based on Foata normal form. 20/11097 useless extension candidates. Maximal degree in co-relation 36742. Up to 7368 conditions per place. [2023-11-29 05:29:55,628 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 131 selfloop transitions, 2 changer transitions 50/187 dead transitions. [2023-11-29 05:29:55,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 187 transitions, 1883 flow [2023-11-29 05:29:55,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:29:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:29:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2023-11-29 05:29:55,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2023-11-29 05:29:55,631 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 112 transitions. [2023-11-29 05:29:55,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 112 transitions. [2023-11-29 05:29:55,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:55,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 112 transitions. [2023-11-29 05:29:55,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 05:29:55,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:29:55,633 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:29:55,633 INFO L175 Difference]: Start difference. First operand has 97 places, 139 transitions, 1296 flow. Second operand 4 states and 112 transitions. [2023-11-29 05:29:55,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 187 transitions, 1883 flow [2023-11-29 05:29:55,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 187 transitions, 1855 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-29 05:29:55,734 INFO L231 Difference]: Finished difference. Result has 96 places, 118 transitions, 1000 flow [2023-11-29 05:29:55,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1000, PETRI_PLACES=96, PETRI_TRANSITIONS=118} [2023-11-29 05:29:55,734 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2023-11-29 05:29:55,735 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 118 transitions, 1000 flow [2023-11-29 05:29:55,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 05:29:55,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:55,735 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 05:29:55,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:29:55,735 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:55,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash 730945250, now seen corresponding path program 2 times [2023-11-29 05:29:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75600757] [2023-11-29 05:29:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:29:55,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:55,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75600757] [2023-11-29 05:29:55,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75600757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:55,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:55,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:29:55,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306695571] [2023-11-29 05:29:55,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:55,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:29:55,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:55,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:29:55,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:29:55,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:55,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 118 transitions, 1000 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 05:29:55,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:55,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:55,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:29:57,663 INFO L124 PetriNetUnfolderBase]: 5830/8819 cut-off events. [2023-11-29 05:29:57,663 INFO L125 PetriNetUnfolderBase]: For 24307/24315 co-relation queries the response was YES. [2023-11-29 05:29:57,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27894 conditions, 8819 events. 5830/8819 cut-off events. For 24307/24315 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 51545 event pairs, 3521 based on Foata normal form. 2/8501 useless extension candidates. Maximal degree in co-relation 27864. Up to 7368 conditions per place. [2023-11-29 05:29:57,712 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 105 selfloop transitions, 0 changer transitions 36/145 dead transitions. [2023-11-29 05:29:57,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 145 transitions, 1363 flow [2023-11-29 05:29:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:29:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:29:57,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2023-11-29 05:29:57,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2023-11-29 05:29:57,714 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 98 transitions. [2023-11-29 05:29:57,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 98 transitions. [2023-11-29 05:29:57,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:29:57,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 98 transitions. [2023-11-29 05:29:57,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 05:29:57,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:29:57,715 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:29:57,715 INFO L175 Difference]: Start difference. First operand has 96 places, 118 transitions, 1000 flow. Second operand 4 states and 98 transitions. [2023-11-29 05:29:57,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 145 transitions, 1363 flow [2023-11-29 05:29:57,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 145 transitions, 1268 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-29 05:29:57,838 INFO L231 Difference]: Finished difference. Result has 91 places, 109 transitions, 781 flow [2023-11-29 05:29:57,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=781, PETRI_PLACES=91, PETRI_TRANSITIONS=109} [2023-11-29 05:29:57,838 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2023-11-29 05:29:57,839 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 109 transitions, 781 flow [2023-11-29 05:29:57,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 05:29:57,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:29:57,839 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 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 05:29:57,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:29:57,839 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:29:57,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:57,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1717057728, now seen corresponding path program 1 times [2023-11-29 05:29:57,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:57,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639782064] [2023-11-29 05:29:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:57,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:29:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639782064] [2023-11-29 05:29:57,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639782064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:57,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:57,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:29:57,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128816207] [2023-11-29 05:29:57,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:57,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:29:57,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:57,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:29:57,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:29:57,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:29:57,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 109 transitions, 781 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 05:29:57,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:29:57,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:29:57,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:00,131 INFO L124 PetriNetUnfolderBase]: 6786/10006 cut-off events. [2023-11-29 05:30:00,132 INFO L125 PetriNetUnfolderBase]: For 17347/17355 co-relation queries the response was YES. [2023-11-29 05:30:00,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28913 conditions, 10006 events. 6786/10006 cut-off events. For 17347/17355 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 58270 event pairs, 3625 based on Foata normal form. 306/9625 useless extension candidates. Maximal degree in co-relation 28885. Up to 7404 conditions per place. [2023-11-29 05:30:00,195 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 124 selfloop transitions, 21 changer transitions 1/150 dead transitions. [2023-11-29 05:30:00,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 150 transitions, 1300 flow [2023-11-29 05:30:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:30:00,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:30:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2023-11-29 05:30:00,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2023-11-29 05:30:00,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 82 transitions. [2023-11-29 05:30:00,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 82 transitions. [2023-11-29 05:30:00,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:00,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 82 transitions. [2023-11-29 05:30:00,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:30:00,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 05:30:00,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 05:30:00,198 INFO L175 Difference]: Start difference. First operand has 91 places, 109 transitions, 781 flow. Second operand 3 states and 82 transitions. [2023-11-29 05:30:00,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 150 transitions, 1300 flow [2023-11-29 05:30:00,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 150 transitions, 1200 flow, removed 25 selfloop flow, removed 10 redundant places. [2023-11-29 05:30:00,248 INFO L231 Difference]: Finished difference. Result has 75 places, 110 transitions, 776 flow [2023-11-29 05:30:00,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=776, PETRI_PLACES=75, PETRI_TRANSITIONS=110} [2023-11-29 05:30:00,249 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2023-11-29 05:30:00,249 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 110 transitions, 776 flow [2023-11-29 05:30:00,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 05:30:00,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:00,249 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:00,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:30:00,250 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:30:00,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:00,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1123877678, now seen corresponding path program 1 times [2023-11-29 05:30:00,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:00,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282360539] [2023-11-29 05:30:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:00,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:00,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:00,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282360539] [2023-11-29 05:30:00,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282360539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:00,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:00,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:30:00,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981803669] [2023-11-29 05:30:00,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:00,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:30:00,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:30:00,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:30:00,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:00,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 110 transitions, 776 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:00,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:00,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:00,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:03,681 INFO L124 PetriNetUnfolderBase]: 9850/14795 cut-off events. [2023-11-29 05:30:03,681 INFO L125 PetriNetUnfolderBase]: For 19976/19984 co-relation queries the response was YES. [2023-11-29 05:30:03,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41191 conditions, 14795 events. 9850/14795 cut-off events. For 19976/19984 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 95120 event pairs, 2063 based on Foata normal form. 9/14718 useless extension candidates. Maximal degree in co-relation 41170. Up to 6508 conditions per place. [2023-11-29 05:30:03,746 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 160 selfloop transitions, 52 changer transitions 2/218 dead transitions. [2023-11-29 05:30:03,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 218 transitions, 1700 flow [2023-11-29 05:30:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:30:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:30:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2023-11-29 05:30:03,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326797385620915 [2023-11-29 05:30:03,748 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 163 transitions. [2023-11-29 05:30:03,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 163 transitions. [2023-11-29 05:30:03,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:03,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 163 transitions. [2023-11-29 05:30:03,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 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 05:30:03,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 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 05:30:03,750 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 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 05:30:03,750 INFO L175 Difference]: Start difference. First operand has 75 places, 110 transitions, 776 flow. Second operand 6 states and 163 transitions. [2023-11-29 05:30:03,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 218 transitions, 1700 flow [2023-11-29 05:30:03,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 218 transitions, 1671 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:30:03,777 INFO L231 Difference]: Finished difference. Result has 84 places, 140 transitions, 1217 flow [2023-11-29 05:30:03,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1217, PETRI_PLACES=84, PETRI_TRANSITIONS=140} [2023-11-29 05:30:03,778 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 39 predicate places. [2023-11-29 05:30:03,778 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 140 transitions, 1217 flow [2023-11-29 05:30:03,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:03,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:03,778 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:03,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:30:03,778 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:30:03,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:03,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1499630022, now seen corresponding path program 2 times [2023-11-29 05:30:03,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:03,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775314574] [2023-11-29 05:30:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:03,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:04,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:04,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775314574] [2023-11-29 05:30:04,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775314574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:04,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:04,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:30:04,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720198889] [2023-11-29 05:30:04,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:04,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:30:04,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:04,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:30:04,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:30:04,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:04,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 140 transitions, 1217 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:04,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:04,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:04,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:07,303 INFO L124 PetriNetUnfolderBase]: 10528/15864 cut-off events. [2023-11-29 05:30:07,303 INFO L125 PetriNetUnfolderBase]: For 34339/34375 co-relation queries the response was YES. [2023-11-29 05:30:07,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48444 conditions, 15864 events. 10528/15864 cut-off events. For 34339/34375 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 104196 event pairs, 3723 based on Foata normal form. 35/15829 useless extension candidates. Maximal degree in co-relation 48419. Up to 10882 conditions per place. [2023-11-29 05:30:07,394 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 156 selfloop transitions, 28 changer transitions 17/205 dead transitions. [2023-11-29 05:30:07,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 205 transitions, 1905 flow [2023-11-29 05:30:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:30:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:30:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2023-11-29 05:30:07,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2023-11-29 05:30:07,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 127 transitions. [2023-11-29 05:30:07,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 127 transitions. [2023-11-29 05:30:07,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:07,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 127 transitions. [2023-11-29 05:30:07,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 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 05:30:07,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:30:07,396 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:30:07,397 INFO L175 Difference]: Start difference. First operand has 84 places, 140 transitions, 1217 flow. Second operand 5 states and 127 transitions. [2023-11-29 05:30:07,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 205 transitions, 1905 flow [2023-11-29 05:30:07,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 205 transitions, 1889 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-11-29 05:30:07,448 INFO L231 Difference]: Finished difference. Result has 90 places, 140 transitions, 1265 flow [2023-11-29 05:30:07,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1265, PETRI_PLACES=90, PETRI_TRANSITIONS=140} [2023-11-29 05:30:07,448 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2023-11-29 05:30:07,449 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 140 transitions, 1265 flow [2023-11-29 05:30:07,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:07,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:07,449 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:07,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:30:07,449 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:30:07,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1527870758, now seen corresponding path program 3 times [2023-11-29 05:30:07,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:07,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605872391] [2023-11-29 05:30:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:07,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:07,905 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:07,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:07,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605872391] [2023-11-29 05:30:07,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605872391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:07,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:07,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:30:07,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576837493] [2023-11-29 05:30:07,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:07,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:30:07,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:07,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:30:07,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:30:07,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:07,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 140 transitions, 1265 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:07,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:07,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:07,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:11,021 INFO L124 PetriNetUnfolderBase]: 10244/15403 cut-off events. [2023-11-29 05:30:11,021 INFO L125 PetriNetUnfolderBase]: For 37907/37951 co-relation queries the response was YES. [2023-11-29 05:30:11,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47627 conditions, 15403 events. 10244/15403 cut-off events. For 37907/37951 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 100856 event pairs, 5515 based on Foata normal form. 43/15368 useless extension candidates. Maximal degree in co-relation 47599. Up to 11556 conditions per place. [2023-11-29 05:30:11,123 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 171 selfloop transitions, 8 changer transitions 18/201 dead transitions. [2023-11-29 05:30:11,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 201 transitions, 1880 flow [2023-11-29 05:30:11,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:30:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:30:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2023-11-29 05:30:11,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2023-11-29 05:30:11,125 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 131 transitions. [2023-11-29 05:30:11,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 131 transitions. [2023-11-29 05:30:11,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:11,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 131 transitions. [2023-11-29 05:30:11,125 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 05:30:11,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:30:11,126 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:30:11,126 INFO L175 Difference]: Start difference. First operand has 90 places, 140 transitions, 1265 flow. Second operand 5 states and 131 transitions. [2023-11-29 05:30:11,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 201 transitions, 1880 flow [2023-11-29 05:30:11,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 201 transitions, 1848 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 05:30:11,190 INFO L231 Difference]: Finished difference. Result has 93 places, 138 transitions, 1228 flow [2023-11-29 05:30:11,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1228, PETRI_PLACES=93, PETRI_TRANSITIONS=138} [2023-11-29 05:30:11,191 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2023-11-29 05:30:11,191 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 138 transitions, 1228 flow [2023-11-29 05:30:11,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:11,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:11,191 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:11,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:30:11,191 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:30:11,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:11,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1176274096, now seen corresponding path program 4 times [2023-11-29 05:30:11,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:11,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775151179] [2023-11-29 05:30:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:11,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:11,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775151179] [2023-11-29 05:30:11,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775151179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:11,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:11,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:30:11,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373142836] [2023-11-29 05:30:11,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:11,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:30:11,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:11,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:30:11,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:30:11,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:11,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 138 transitions, 1228 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:11,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:11,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:11,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:14,765 INFO L124 PetriNetUnfolderBase]: 10184/15276 cut-off events. [2023-11-29 05:30:14,765 INFO L125 PetriNetUnfolderBase]: For 37178/37222 co-relation queries the response was YES. [2023-11-29 05:30:14,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47561 conditions, 15276 events. 10184/15276 cut-off events. For 37178/37222 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 99682 event pairs, 5619 based on Foata normal form. 13/15211 useless extension candidates. Maximal degree in co-relation 47532. Up to 11556 conditions per place. [2023-11-29 05:30:14,845 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 169 selfloop transitions, 10 changer transitions 5/188 dead transitions. [2023-11-29 05:30:14,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 188 transitions, 1798 flow [2023-11-29 05:30:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:30:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:30:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2023-11-29 05:30:14,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745098039215686 [2023-11-29 05:30:14,846 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 121 transitions. [2023-11-29 05:30:14,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 121 transitions. [2023-11-29 05:30:14,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:14,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 121 transitions. [2023-11-29 05:30:14,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 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 05:30:14,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:30:14,848 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:30:14,848 INFO L175 Difference]: Start difference. First operand has 93 places, 138 transitions, 1228 flow. Second operand 5 states and 121 transitions. [2023-11-29 05:30:14,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 188 transitions, 1798 flow [2023-11-29 05:30:14,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 188 transitions, 1773 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-29 05:30:14,938 INFO L231 Difference]: Finished difference. Result has 96 places, 142 transitions, 1285 flow [2023-11-29 05:30:14,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1285, PETRI_PLACES=96, PETRI_TRANSITIONS=142} [2023-11-29 05:30:14,938 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2023-11-29 05:30:14,939 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 142 transitions, 1285 flow [2023-11-29 05:30:14,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:14,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:14,939 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:14,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:30:14,939 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:30:14,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1990640748, now seen corresponding path program 5 times [2023-11-29 05:30:14,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:14,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975390892] [2023-11-29 05:30:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:14,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:15,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:15,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975390892] [2023-11-29 05:30:15,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975390892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:15,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:15,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:30:15,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464088137] [2023-11-29 05:30:15,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:15,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:30:15,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:15,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:30:15,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:30:15,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:15,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 142 transitions, 1285 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:15,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:15,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:15,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:18,918 INFO L124 PetriNetUnfolderBase]: 11718/17635 cut-off events. [2023-11-29 05:30:18,918 INFO L125 PetriNetUnfolderBase]: For 45577/45621 co-relation queries the response was YES. [2023-11-29 05:30:18,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54867 conditions, 17635 events. 11718/17635 cut-off events. For 45577/45621 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 118257 event pairs, 3815 based on Foata normal form. 17/17506 useless extension candidates. Maximal degree in co-relation 54837. Up to 7918 conditions per place. [2023-11-29 05:30:19,040 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 155 selfloop transitions, 53 changer transitions 2/214 dead transitions. [2023-11-29 05:30:19,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 214 transitions, 2011 flow [2023-11-29 05:30:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:30:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:30:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2023-11-29 05:30:19,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607843137254902 [2023-11-29 05:30:19,042 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 143 transitions. [2023-11-29 05:30:19,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 143 transitions. [2023-11-29 05:30:19,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:19,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 143 transitions. [2023-11-29 05:30:19,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 05:30:19,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:30:19,043 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:30:19,043 INFO L175 Difference]: Start difference. First operand has 96 places, 142 transitions, 1285 flow. Second operand 5 states and 143 transitions. [2023-11-29 05:30:19,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 214 transitions, 2011 flow [2023-11-29 05:30:19,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 214 transitions, 1987 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-29 05:30:19,146 INFO L231 Difference]: Finished difference. Result has 101 places, 150 transitions, 1544 flow [2023-11-29 05:30:19,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1544, PETRI_PLACES=101, PETRI_TRANSITIONS=150} [2023-11-29 05:30:19,147 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2023-11-29 05:30:19,147 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 150 transitions, 1544 flow [2023-11-29 05:30:19,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:19,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:19,147 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:19,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:30:19,147 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:30:19,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:19,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1175064984, now seen corresponding path program 6 times [2023-11-29 05:30:19,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:19,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737121641] [2023-11-29 05:30:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:19,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:19,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:19,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737121641] [2023-11-29 05:30:19,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737121641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:19,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:19,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:30:19,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255611559] [2023-11-29 05:30:19,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:19,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:30:19,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:19,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:30:19,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:30:19,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:19,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 150 transitions, 1544 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:19,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:19,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:19,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:23,089 INFO L124 PetriNetUnfolderBase]: 11718/17677 cut-off events. [2023-11-29 05:30:23,090 INFO L125 PetriNetUnfolderBase]: For 61019/61063 co-relation queries the response was YES. [2023-11-29 05:30:23,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58392 conditions, 17677 events. 11718/17677 cut-off events. For 61019/61063 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 118717 event pairs, 4243 based on Foata normal form. 17/17606 useless extension candidates. Maximal degree in co-relation 58360. Up to 7918 conditions per place. [2023-11-29 05:30:23,218 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 155 selfloop transitions, 46 changer transitions 6/211 dead transitions. [2023-11-29 05:30:23,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 211 transitions, 2192 flow [2023-11-29 05:30:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:30:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:30:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2023-11-29 05:30:23,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-11-29 05:30:23,219 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 136 transitions. [2023-11-29 05:30:23,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 136 transitions. [2023-11-29 05:30:23,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:23,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 136 transitions. [2023-11-29 05:30:23,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.2) internal successors, (136), 5 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 05:30:23,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:30:23,221 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 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 05:30:23,221 INFO L175 Difference]: Start difference. First operand has 101 places, 150 transitions, 1544 flow. Second operand 5 states and 136 transitions. [2023-11-29 05:30:23,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 211 transitions, 2192 flow [2023-11-29 05:30:23,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 211 transitions, 2174 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-29 05:30:23,383 INFO L231 Difference]: Finished difference. Result has 107 places, 153 transitions, 1689 flow [2023-11-29 05:30:23,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1689, PETRI_PLACES=107, PETRI_TRANSITIONS=153} [2023-11-29 05:30:23,384 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 62 predicate places. [2023-11-29 05:30:23,384 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 153 transitions, 1689 flow [2023-11-29 05:30:23,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 05:30:23,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:23,385 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:23,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:30:23,385 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:30:23,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash -284469373, now seen corresponding path program 1 times [2023-11-29 05:30:23,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:23,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661702049] [2023-11-29 05:30:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:23,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:23,521 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:23,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:23,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661702049] [2023-11-29 05:30:23,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661702049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:23,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:23,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:30:23,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007500193] [2023-11-29 05:30:23,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:23,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:30:23,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:23,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:30:23,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:30:23,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:23,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 153 transitions, 1689 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:23,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:23,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:23,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:27,010 INFO L124 PetriNetUnfolderBase]: 11706/17810 cut-off events. [2023-11-29 05:30:27,010 INFO L125 PetriNetUnfolderBase]: For 69913/69961 co-relation queries the response was YES. [2023-11-29 05:30:27,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60466 conditions, 17810 events. 11706/17810 cut-off events. For 69913/69961 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 120835 event pairs, 2929 based on Foata normal form. 100/17878 useless extension candidates. Maximal degree in co-relation 60431. Up to 12000 conditions per place. [2023-11-29 05:30:27,141 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 169 selfloop transitions, 15 changer transitions 1/189 dead transitions. [2023-11-29 05:30:27,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 189 transitions, 2186 flow [2023-11-29 05:30:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:30:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:30:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2023-11-29 05:30:27,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343137254901961 [2023-11-29 05:30:27,142 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 109 transitions. [2023-11-29 05:30:27,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 109 transitions. [2023-11-29 05:30:27,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:27,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 109 transitions. [2023-11-29 05:30:27,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 05:30:27,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:27,144 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:27,144 INFO L175 Difference]: Start difference. First operand has 107 places, 153 transitions, 1689 flow. Second operand 4 states and 109 transitions. [2023-11-29 05:30:27,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 189 transitions, 2186 flow [2023-11-29 05:30:27,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 189 transitions, 2120 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-29 05:30:27,266 INFO L231 Difference]: Finished difference. Result has 110 places, 152 transitions, 1659 flow [2023-11-29 05:30:27,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1659, PETRI_PLACES=110, PETRI_TRANSITIONS=152} [2023-11-29 05:30:27,266 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2023-11-29 05:30:27,266 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 152 transitions, 1659 flow [2023-11-29 05:30:27,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:27,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:27,266 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:27,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:30:27,267 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 1 more)] === [2023-11-29 05:30:27,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:27,267 INFO L85 PathProgramCache]: Analyzing trace with hash 868665641, now seen corresponding path program 1 times [2023-11-29 05:30:27,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:27,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540916046] [2023-11-29 05:30:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:27,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:27,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:27,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540916046] [2023-11-29 05:30:27,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540916046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:27,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:27,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:30:27,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125098005] [2023-11-29 05:30:27,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:27,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:30:27,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:27,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:30:27,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:30:27,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:27,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 152 transitions, 1659 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:27,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:27,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:27,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:31,190 INFO L124 PetriNetUnfolderBase]: 12628/19251 cut-off events. [2023-11-29 05:30:31,190 INFO L125 PetriNetUnfolderBase]: For 72844/72844 co-relation queries the response was YES. [2023-11-29 05:30:31,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63656 conditions, 19251 events. 12628/19251 cut-off events. For 72844/72844 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 132480 event pairs, 3029 based on Foata normal form. 86/19329 useless extension candidates. Maximal degree in co-relation 63620. Up to 13226 conditions per place. [2023-11-29 05:30:31,316 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 178 selfloop transitions, 18 changer transitions 2/202 dead transitions. [2023-11-29 05:30:31,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 202 transitions, 2347 flow [2023-11-29 05:30:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:30:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:30:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2023-11-29 05:30:31,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343137254901961 [2023-11-29 05:30:31,317 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 109 transitions. [2023-11-29 05:30:31,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 109 transitions. [2023-11-29 05:30:31,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:31,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 109 transitions. [2023-11-29 05:30:31,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 05:30:31,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:31,319 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:31,319 INFO L175 Difference]: Start difference. First operand has 110 places, 152 transitions, 1659 flow. Second operand 4 states and 109 transitions. [2023-11-29 05:30:31,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 202 transitions, 2347 flow [2023-11-29 05:30:31,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 202 transitions, 2332 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 05:30:31,418 INFO L231 Difference]: Finished difference. Result has 112 places, 156 transitions, 1770 flow [2023-11-29 05:30:31,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1770, PETRI_PLACES=112, PETRI_TRANSITIONS=156} [2023-11-29 05:30:31,419 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 67 predicate places. [2023-11-29 05:30:31,419 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 156 transitions, 1770 flow [2023-11-29 05:30:31,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:31,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:31,419 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:31,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:30:31,420 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 1 more)] === [2023-11-29 05:30:31,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash 516530295, now seen corresponding path program 2 times [2023-11-29 05:30:31,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:31,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772360019] [2023-11-29 05:30:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:31,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:31,512 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:31,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:31,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772360019] [2023-11-29 05:30:31,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772360019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:31,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:31,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:30:31,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171071721] [2023-11-29 05:30:31,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:31,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:30:31,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:30:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:30:31,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:31,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 156 transitions, 1770 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:31,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:31,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:31,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:35,331 INFO L124 PetriNetUnfolderBase]: 12600/19127 cut-off events. [2023-11-29 05:30:35,331 INFO L125 PetriNetUnfolderBase]: For 78111/78135 co-relation queries the response was YES. [2023-11-29 05:30:35,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64204 conditions, 19127 events. 12600/19127 cut-off events. For 78111/78135 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 131481 event pairs, 4189 based on Foata normal form. 28/19123 useless extension candidates. Maximal degree in co-relation 64167. Up to 16373 conditions per place. [2023-11-29 05:30:35,481 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 176 selfloop transitions, 14 changer transitions 2/196 dead transitions. [2023-11-29 05:30:35,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 196 transitions, 2325 flow [2023-11-29 05:30:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:30:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:30:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2023-11-29 05:30:35,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049019607843137 [2023-11-29 05:30:35,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 103 transitions. [2023-11-29 05:30:35,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 103 transitions. [2023-11-29 05:30:35,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:35,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 103 transitions. [2023-11-29 05:30:35,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 05:30:35,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:35,484 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:35,484 INFO L175 Difference]: Start difference. First operand has 112 places, 156 transitions, 1770 flow. Second operand 4 states and 103 transitions. [2023-11-29 05:30:35,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 196 transitions, 2325 flow [2023-11-29 05:30:35,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 196 transitions, 2321 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-29 05:30:35,599 INFO L231 Difference]: Finished difference. Result has 115 places, 154 transitions, 1762 flow [2023-11-29 05:30:35,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1762, PETRI_PLACES=115, PETRI_TRANSITIONS=154} [2023-11-29 05:30:35,600 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 70 predicate places. [2023-11-29 05:30:35,600 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 154 transitions, 1762 flow [2023-11-29 05:30:35,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:35,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:35,601 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:35,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:30:35,601 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 1 more)] === [2023-11-29 05:30:35,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash -149842133, now seen corresponding path program 2 times [2023-11-29 05:30:35,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743559296] [2023-11-29 05:30:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:35,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:35,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:35,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743559296] [2023-11-29 05:30:35,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743559296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:35,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:35,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:30:35,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733751688] [2023-11-29 05:30:35,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:35,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:30:35,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:35,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:30:35,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:30:35,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:35,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 154 transitions, 1762 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:35,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:35,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:35,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:39,511 INFO L124 PetriNetUnfolderBase]: 12390/18783 cut-off events. [2023-11-29 05:30:39,511 INFO L125 PetriNetUnfolderBase]: For 77398/77446 co-relation queries the response was YES. [2023-11-29 05:30:39,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63117 conditions, 18783 events. 12390/18783 cut-off events. For 77398/77446 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 129086 event pairs, 7425 based on Foata normal form. 36/18799 useless extension candidates. Maximal degree in co-relation 63079. Up to 14988 conditions per place. [2023-11-29 05:30:39,643 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 160 selfloop transitions, 4 changer transitions 13/181 dead transitions. [2023-11-29 05:30:39,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 181 transitions, 2173 flow [2023-11-29 05:30:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:30:39,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:30:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2023-11-29 05:30:39,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47549019607843135 [2023-11-29 05:30:39,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 97 transitions. [2023-11-29 05:30:39,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 97 transitions. [2023-11-29 05:30:39,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:39,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 97 transitions. [2023-11-29 05:30:39,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 05:30:39,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:39,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:39,646 INFO L175 Difference]: Start difference. First operand has 115 places, 154 transitions, 1762 flow. Second operand 4 states and 97 transitions. [2023-11-29 05:30:39,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 181 transitions, 2173 flow [2023-11-29 05:30:39,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 181 transitions, 2155 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 05:30:39,748 INFO L231 Difference]: Finished difference. Result has 116 places, 148 transitions, 1650 flow [2023-11-29 05:30:39,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1650, PETRI_PLACES=116, PETRI_TRANSITIONS=148} [2023-11-29 05:30:39,749 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 71 predicate places. [2023-11-29 05:30:39,749 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 148 transitions, 1650 flow [2023-11-29 05:30:39,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:39,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:39,749 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:39,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:30:39,750 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 1 more)] === [2023-11-29 05:30:39,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:39,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1298264155, now seen corresponding path program 3 times [2023-11-29 05:30:39,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:39,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040900034] [2023-11-29 05:30:39,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:39,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:39,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:39,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040900034] [2023-11-29 05:30:39,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040900034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:39,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:39,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:30:39,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277954645] [2023-11-29 05:30:39,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:39,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:30:39,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:39,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:30:39,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:30:39,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:39,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 148 transitions, 1650 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:39,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:39,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:39,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:43,599 INFO L124 PetriNetUnfolderBase]: 11688/17743 cut-off events. [2023-11-29 05:30:43,599 INFO L125 PetriNetUnfolderBase]: For 73659/73659 co-relation queries the response was YES. [2023-11-29 05:30:43,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60041 conditions, 17743 events. 11688/17743 cut-off events. For 73659/73659 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 120091 event pairs, 3261 based on Foata normal form. 24/17759 useless extension candidates. Maximal degree in co-relation 60003. Up to 14492 conditions per place. [2023-11-29 05:30:43,737 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 162 selfloop transitions, 8 changer transitions 12/186 dead transitions. [2023-11-29 05:30:43,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 186 transitions, 2159 flow [2023-11-29 05:30:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:30:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:30:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2023-11-29 05:30:43,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2023-11-29 05:30:43,738 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 107 transitions. [2023-11-29 05:30:43,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 107 transitions. [2023-11-29 05:30:43,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:43,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 107 transitions. [2023-11-29 05:30:43,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 05:30:43,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:43,739 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:43,739 INFO L175 Difference]: Start difference. First operand has 116 places, 148 transitions, 1650 flow. Second operand 4 states and 107 transitions. [2023-11-29 05:30:43,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 186 transitions, 2159 flow [2023-11-29 05:30:43,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 186 transitions, 2146 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 05:30:43,855 INFO L231 Difference]: Finished difference. Result has 114 places, 141 transitions, 1570 flow [2023-11-29 05:30:43,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1570, PETRI_PLACES=114, PETRI_TRANSITIONS=141} [2023-11-29 05:30:43,855 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 69 predicate places. [2023-11-29 05:30:43,855 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 141 transitions, 1570 flow [2023-11-29 05:30:43,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:43,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:43,855 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:43,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:30:43,856 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 1 more)] === [2023-11-29 05:30:43,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:43,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1967317483, now seen corresponding path program 3 times [2023-11-29 05:30:43,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:43,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473760943] [2023-11-29 05:30:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:43,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:43,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:43,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473760943] [2023-11-29 05:30:43,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473760943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:43,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:43,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:30:43,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820983892] [2023-11-29 05:30:43,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:43,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:30:43,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:43,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:30:43,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:30:43,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:43,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 141 transitions, 1570 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:43,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:43,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:43,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:47,215 INFO L124 PetriNetUnfolderBase]: 11082/16881 cut-off events. [2023-11-29 05:30:47,216 INFO L125 PetriNetUnfolderBase]: For 68786/68786 co-relation queries the response was YES. [2023-11-29 05:30:47,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56792 conditions, 16881 events. 11082/16881 cut-off events. For 68786/68786 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 114118 event pairs, 2441 based on Foata normal form. 116/16989 useless extension candidates. Maximal degree in co-relation 56755. Up to 13424 conditions per place. [2023-11-29 05:30:47,356 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 160 selfloop transitions, 16 changer transitions 0/180 dead transitions. [2023-11-29 05:30:47,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 180 transitions, 2040 flow [2023-11-29 05:30:47,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:30:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:30:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2023-11-29 05:30:47,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2023-11-29 05:30:47,357 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 107 transitions. [2023-11-29 05:30:47,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 107 transitions. [2023-11-29 05:30:47,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:47,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 107 transitions. [2023-11-29 05:30:47,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 05:30:47,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:47,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:47,359 INFO L175 Difference]: Start difference. First operand has 114 places, 141 transitions, 1570 flow. Second operand 4 states and 107 transitions. [2023-11-29 05:30:47,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 180 transitions, 2040 flow [2023-11-29 05:30:47,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 180 transitions, 1938 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-11-29 05:30:47,466 INFO L231 Difference]: Finished difference. Result has 108 places, 139 transitions, 1478 flow [2023-11-29 05:30:47,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1478, PETRI_PLACES=108, PETRI_TRANSITIONS=139} [2023-11-29 05:30:47,467 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2023-11-29 05:30:47,467 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 139 transitions, 1478 flow [2023-11-29 05:30:47,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:47,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:47,467 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:47,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 05:30:47,468 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 1 more)] === [2023-11-29 05:30:47,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:47,468 INFO L85 PathProgramCache]: Analyzing trace with hash 561839931, now seen corresponding path program 4 times [2023-11-29 05:30:47,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:47,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558695446] [2023-11-29 05:30:47,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:47,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:47,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:47,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558695446] [2023-11-29 05:30:47,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558695446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:47,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:47,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:30:47,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700742438] [2023-11-29 05:30:47,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:47,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:30:47,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:47,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:30:47,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:30:47,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:47,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 139 transitions, 1478 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:47,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:47,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:47,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:50,743 INFO L124 PetriNetUnfolderBase]: 10622/16147 cut-off events. [2023-11-29 05:30:50,744 INFO L125 PetriNetUnfolderBase]: For 55320/55320 co-relation queries the response was YES. [2023-11-29 05:30:50,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53645 conditions, 16147 events. 10622/16147 cut-off events. For 55320/55320 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 107786 event pairs, 2965 based on Foata normal form. 24/16163 useless extension candidates. Maximal degree in co-relation 53613. Up to 14418 conditions per place. [2023-11-29 05:30:50,844 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 137 selfloop transitions, 6 changer transitions 11/158 dead transitions. [2023-11-29 05:30:50,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 158 transitions, 1789 flow [2023-11-29 05:30:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:30:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:30:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2023-11-29 05:30:50,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2023-11-29 05:30:50,845 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 92 transitions. [2023-11-29 05:30:50,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 92 transitions. [2023-11-29 05:30:50,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:50,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 92 transitions. [2023-11-29 05:30:50,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 05:30:50,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:50,846 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:50,846 INFO L175 Difference]: Start difference. First operand has 108 places, 139 transitions, 1478 flow. Second operand 4 states and 92 transitions. [2023-11-29 05:30:50,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 158 transitions, 1789 flow [2023-11-29 05:30:50,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 158 transitions, 1775 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-29 05:30:50,908 INFO L231 Difference]: Finished difference. Result has 110 places, 133 transitions, 1382 flow [2023-11-29 05:30:50,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1382, PETRI_PLACES=110, PETRI_TRANSITIONS=133} [2023-11-29 05:30:50,908 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2023-11-29 05:30:50,908 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 133 transitions, 1382 flow [2023-11-29 05:30:50,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:50,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:50,909 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:50,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 05:30:50,909 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 1 more)] === [2023-11-29 05:30:50,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:50,909 INFO L85 PathProgramCache]: Analyzing trace with hash 872279763, now seen corresponding path program 5 times [2023-11-29 05:30:50,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:50,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556889291] [2023-11-29 05:30:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:50,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:51,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:51,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556889291] [2023-11-29 05:30:51,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556889291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:51,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:51,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:30:51,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856568137] [2023-11-29 05:30:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:51,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:30:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:51,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:30:51,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:30:51,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:51,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 133 transitions, 1382 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:51,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:51,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:51,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:54,057 INFO L124 PetriNetUnfolderBase]: 10136/15282 cut-off events. [2023-11-29 05:30:54,057 INFO L125 PetriNetUnfolderBase]: For 53530/53530 co-relation queries the response was YES. [2023-11-29 05:30:54,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51118 conditions, 15282 events. 10136/15282 cut-off events. For 53530/53530 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 100073 event pairs, 6431 based on Foata normal form. 28/15294 useless extension candidates. Maximal degree in co-relation 51086. Up to 13342 conditions per place. [2023-11-29 05:30:54,148 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 153 selfloop transitions, 3 changer transitions 2/162 dead transitions. [2023-11-29 05:30:54,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 162 transitions, 1782 flow [2023-11-29 05:30:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:30:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:30:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2023-11-29 05:30:54,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46568627450980393 [2023-11-29 05:30:54,149 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 95 transitions. [2023-11-29 05:30:54,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 95 transitions. [2023-11-29 05:30:54,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:54,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 95 transitions. [2023-11-29 05:30:54,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 05:30:54,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:54,151 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:54,151 INFO L175 Difference]: Start difference. First operand has 110 places, 133 transitions, 1382 flow. Second operand 4 states and 95 transitions. [2023-11-29 05:30:54,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 162 transitions, 1782 flow [2023-11-29 05:30:54,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 162 transitions, 1753 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-29 05:30:54,214 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 1312 flow [2023-11-29 05:30:54,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1312, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2023-11-29 05:30:54,214 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2023-11-29 05:30:54,215 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 1312 flow [2023-11-29 05:30:54,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:54,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:54,215 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:54,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 05:30:54,215 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 1 more)] === [2023-11-29 05:30:54,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:54,215 INFO L85 PathProgramCache]: Analyzing trace with hash -288583097, now seen corresponding path program 4 times [2023-11-29 05:30:54,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:54,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495271007] [2023-11-29 05:30:54,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:54,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:54,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:54,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495271007] [2023-11-29 05:30:54,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495271007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:54,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:54,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:30:54,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127359680] [2023-11-29 05:30:54,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:54,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:30:54,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:54,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:30:54,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:30:54,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:54,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 1312 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:54,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:54,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:54,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:30:57,189 INFO L124 PetriNetUnfolderBase]: 9318/14142 cut-off events. [2023-11-29 05:30:57,189 INFO L125 PetriNetUnfolderBase]: For 45717/45717 co-relation queries the response was YES. [2023-11-29 05:30:57,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45908 conditions, 14142 events. 9318/14142 cut-off events. For 45717/45717 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 91641 event pairs, 2281 based on Foata normal form. 140/14274 useless extension candidates. Maximal degree in co-relation 45876. Up to 12144 conditions per place. [2023-11-29 05:30:57,277 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 140 selfloop transitions, 11 changer transitions 0/155 dead transitions. [2023-11-29 05:30:57,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 155 transitions, 1646 flow [2023-11-29 05:30:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:30:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:30:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2023-11-29 05:30:57,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2023-11-29 05:30:57,278 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 98 transitions. [2023-11-29 05:30:57,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 98 transitions. [2023-11-29 05:30:57,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:30:57,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 98 transitions. [2023-11-29 05:30:57,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 05:30:57,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:57,279 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:30:57,279 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 1312 flow. Second operand 4 states and 98 transitions. [2023-11-29 05:30:57,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 155 transitions, 1646 flow [2023-11-29 05:30:57,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 155 transitions, 1600 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-29 05:30:57,373 INFO L231 Difference]: Finished difference. Result has 104 places, 127 transitions, 1237 flow [2023-11-29 05:30:57,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1237, PETRI_PLACES=104, PETRI_TRANSITIONS=127} [2023-11-29 05:30:57,374 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 59 predicate places. [2023-11-29 05:30:57,374 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 127 transitions, 1237 flow [2023-11-29 05:30:57,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:57,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:30:57,374 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:30:57,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 05:30:57,375 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 1 more)] === [2023-11-29 05:30:57,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:30:57,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1493153793, now seen corresponding path program 6 times [2023-11-29 05:30:57,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:30:57,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154358935] [2023-11-29 05:30:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:30:57,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:30:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:30:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:30:57,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:30:57,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154358935] [2023-11-29 05:30:57,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154358935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:30:57,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:30:57,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:30:57,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507883540] [2023-11-29 05:30:57,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:30:57,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:30:57,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:30:57,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:30:57,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:30:57,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:30:57,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 127 transitions, 1237 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:30:57,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:30:57,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:30:57,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:31:00,060 INFO L124 PetriNetUnfolderBase]: 8858/13340 cut-off events. [2023-11-29 05:31:00,060 INFO L125 PetriNetUnfolderBase]: For 39924/39924 co-relation queries the response was YES. [2023-11-29 05:31:00,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43080 conditions, 13340 events. 8858/13340 cut-off events. For 39924/39924 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 84815 event pairs, 5799 based on Foata normal form. 24/13348 useless extension candidates. Maximal degree in co-relation 43050. Up to 12308 conditions per place. [2023-11-29 05:31:00,140 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 119 selfloop transitions, 0 changer transitions 15/138 dead transitions. [2023-11-29 05:31:00,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 138 transitions, 1497 flow [2023-11-29 05:31:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:31:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:31:00,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2023-11-29 05:31:00,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2023-11-29 05:31:00,141 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 79 transitions. [2023-11-29 05:31:00,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 79 transitions. [2023-11-29 05:31:00,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:31:00,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 79 transitions. [2023-11-29 05:31:00,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:00,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:31:00,142 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 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 05:31:00,142 INFO L175 Difference]: Start difference. First operand has 104 places, 127 transitions, 1237 flow. Second operand 4 states and 79 transitions. [2023-11-29 05:31:00,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 138 transitions, 1497 flow [2023-11-29 05:31:00,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 138 transitions, 1471 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-29 05:31:00,223 INFO L231 Difference]: Finished difference. Result has 103 places, 123 transitions, 1126 flow [2023-11-29 05:31:00,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1126, PETRI_PLACES=103, PETRI_TRANSITIONS=123} [2023-11-29 05:31:00,224 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2023-11-29 05:31:00,224 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 123 transitions, 1126 flow [2023-11-29 05:31:00,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 05:31:00,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:31:00,224 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:00,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 05:31:00,224 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:31:00,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:00,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1270277314, now seen corresponding path program 1 times [2023-11-29 05:31:00,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:00,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753078569] [2023-11-29 05:31:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:00,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:31:00,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753078569] [2023-11-29 05:31:00,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753078569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:31:00,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:31:00,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:31:00,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997114058] [2023-11-29 05:31:00,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:31:00,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:31:00,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:00,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:31:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:00,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:31:00,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 123 transitions, 1126 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 05:31:00,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:31:00,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:31:00,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:31:03,141 INFO L124 PetriNetUnfolderBase]: 9574/14448 cut-off events. [2023-11-29 05:31:03,141 INFO L125 PetriNetUnfolderBase]: For 40593/40593 co-relation queries the response was YES. [2023-11-29 05:31:03,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45611 conditions, 14448 events. 9574/14448 cut-off events. For 40593/40593 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 93194 event pairs, 5391 based on Foata normal form. 380/14814 useless extension candidates. Maximal degree in co-relation 45582. Up to 11024 conditions per place. [2023-11-29 05:31:03,227 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 129 selfloop transitions, 12 changer transitions 1/146 dead transitions. [2023-11-29 05:31:03,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 146 transitions, 1522 flow [2023-11-29 05:31:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:31:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:31:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-29 05:31:03,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-11-29 05:31:03,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-29 05:31:03,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-29 05:31:03,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:31:03,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-29 05:31:03,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 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 05:31:03,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 05:31:03,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 05:31:03,229 INFO L175 Difference]: Start difference. First operand has 103 places, 123 transitions, 1126 flow. Second operand 3 states and 78 transitions. [2023-11-29 05:31:03,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 146 transitions, 1522 flow [2023-11-29 05:31:03,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 146 transitions, 1487 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-29 05:31:03,288 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 1142 flow [2023-11-29 05:31:03,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1142, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2023-11-29 05:31:03,288 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2023-11-29 05:31:03,288 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 1142 flow [2023-11-29 05:31:03,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 05:31:03,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:31:03,289 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:03,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 05:31:03,289 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:31:03,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2023138233, now seen corresponding path program 1 times [2023-11-29 05:31:03,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:03,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149622987] [2023-11-29 05:31:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:03,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-29 05:31:03,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:03,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149622987] [2023-11-29 05:31:03,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149622987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:31:03,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:31:03,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:31:03,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932056196] [2023-11-29 05:31:03,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:31:03,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:31:03,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:03,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:31:03,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:03,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:31:03,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 1142 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:03,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:31:03,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:31:03,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:31:06,433 INFO L124 PetriNetUnfolderBase]: 10076/15286 cut-off events. [2023-11-29 05:31:06,433 INFO L125 PetriNetUnfolderBase]: For 49020/49020 co-relation queries the response was YES. [2023-11-29 05:31:06,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48599 conditions, 15286 events. 10076/15286 cut-off events. For 49020/49020 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 100199 event pairs, 5957 based on Foata normal form. 330/15600 useless extension candidates. Maximal degree in co-relation 48570. Up to 12126 conditions per place. [2023-11-29 05:31:06,531 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 121 selfloop transitions, 15 changer transitions 1/141 dead transitions. [2023-11-29 05:31:06,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 1458 flow [2023-11-29 05:31:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:31:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:31:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-29 05:31:06,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-11-29 05:31:06,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-29 05:31:06,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-29 05:31:06,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:31:06,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-29 05:31:06,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 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 05:31:06,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 05:31:06,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 05:31:06,533 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 1142 flow. Second operand 3 states and 78 transitions. [2023-11-29 05:31:06,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 1458 flow [2023-11-29 05:31:06,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 141 transitions, 1445 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:31:06,571 INFO L231 Difference]: Finished difference. Result has 103 places, 121 transitions, 1151 flow [2023-11-29 05:31:06,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1151, PETRI_PLACES=103, PETRI_TRANSITIONS=121} [2023-11-29 05:31:06,571 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2023-11-29 05:31:06,571 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 121 transitions, 1151 flow [2023-11-29 05:31:06,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:31:06,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:31:06,572 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:06,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 05:31:06,572 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:31:06,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2123840259, now seen corresponding path program 1 times [2023-11-29 05:31:06,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:06,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252119367] [2023-11-29 05:31:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:06,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:31:13,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:13,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252119367] [2023-11-29 05:31:13,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252119367] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:31:13,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649461462] [2023-11-29 05:31:13,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:13,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:13,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:13,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:13,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:31:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:13,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-29 05:31:13,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:17,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:31:17,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 309 treesize of output 321 [2023-11-29 05:31:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:31:18,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:31:24,730 INFO L349 Elim1Store]: treesize reduction 13, result has 95.7 percent of original size [2023-11-29 05:31:24,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 362 treesize of output 575 [2023-11-29 05:31:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:31:27,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649461462] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:31:27,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:31:27,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 33 [2023-11-29 05:31:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039346935] [2023-11-29 05:31:27,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:31:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 05:31:27,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 05:31:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 05:31:27,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2023-11-29 05:31:27,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 121 transitions, 1151 flow. Second operand has 33 states, 33 states have (on average 10.030303030303031) internal successors, (331), 33 states have internal predecessors, (331), 0 states have call successors, (0), 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 05:31:27,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:31:27,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2023-11-29 05:31:27,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:31:45,348 INFO L124 PetriNetUnfolderBase]: 23516/35710 cut-off events. [2023-11-29 05:31:45,348 INFO L125 PetriNetUnfolderBase]: For 110893/110893 co-relation queries the response was YES. [2023-11-29 05:31:45,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111459 conditions, 35710 events. 23516/35710 cut-off events. For 110893/110893 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 265549 event pairs, 2851 based on Foata normal form. 3/35697 useless extension candidates. Maximal degree in co-relation 111429. Up to 6086 conditions per place. [2023-11-29 05:31:45,609 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 535 selfloop transitions, 182 changer transitions 31/752 dead transitions. [2023-11-29 05:31:45,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 752 transitions, 6784 flow [2023-11-29 05:31:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 05:31:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 05:31:45,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 705 transitions. [2023-11-29 05:31:45,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949579831932773 [2023-11-29 05:31:45,611 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 705 transitions. [2023-11-29 05:31:45,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 705 transitions. [2023-11-29 05:31:45,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:31:45,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 705 transitions. [2023-11-29 05:31:45,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 20.142857142857142) internal successors, (705), 35 states have internal predecessors, (705), 0 states have call successors, (0), 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 05:31:45,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 51.0) internal successors, (1836), 36 states have internal predecessors, (1836), 0 states have call successors, (0), 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 05:31:45,615 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 51.0) internal successors, (1836), 36 states have internal predecessors, (1836), 0 states have call successors, (0), 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 05:31:45,615 INFO L175 Difference]: Start difference. First operand has 103 places, 121 transitions, 1151 flow. Second operand 35 states and 705 transitions. [2023-11-29 05:31:45,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 752 transitions, 6784 flow [2023-11-29 05:31:45,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 752 transitions, 6695 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:31:45,786 INFO L231 Difference]: Finished difference. Result has 156 places, 301 transitions, 3600 flow [2023-11-29 05:31:45,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3600, PETRI_PLACES=156, PETRI_TRANSITIONS=301} [2023-11-29 05:31:45,787 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 111 predicate places. [2023-11-29 05:31:45,787 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 301 transitions, 3600 flow [2023-11-29 05:31:45,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.030303030303031) internal successors, (331), 33 states have internal predecessors, (331), 0 states have call successors, (0), 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 05:31:45,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:31:45,787 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:45,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:31:45,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 05:31:45,988 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 05:31:45,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:45,989 INFO L85 PathProgramCache]: Analyzing trace with hash 850651583, now seen corresponding path program 2 times [2023-11-29 05:31:45,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:45,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038848871] [2023-11-29 05:31:45,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:45,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:31:51,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:51,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038848871] [2023-11-29 05:31:51,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038848871] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:31:51,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973180367] [2023-11-29 05:31:51,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:31:51,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:51,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:51,444 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:51,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4221665-6a22-4af6-8974-ed4f58ff3451/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:31:51,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:31:51,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:31:51,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-29 05:31:51,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:55,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:31:55,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 361 treesize of output 453 [2023-11-29 05:31:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:31:57,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:33:55,944 WARN L293 SmtUtils]: Spent 1.78m on a formula simplification. DAG size of input: 3290 DAG size of output: 2390 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 05:33:55,945 INFO L349 Elim1Store]: treesize reduction 3300, result has 67.3 percent of original size [2023-11-29 05:33:55,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 48 select indices, 48 select index equivalence classes, 0 disjoint index pairs (out of 1128 index pairs), introduced 48 new quantified variables, introduced 1128 case distinctions, treesize of input 1012 treesize of output 7442