./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:29:17,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:29:17,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:29:17,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:29:17,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:29:18,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:29:18,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:29:18,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:29:18,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:29:18,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:29:18,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:29:18,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:29:18,038 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:29:18,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:29:18,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:29:18,041 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:29:18,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:29:18,042 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:29:18,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:29:18,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:29:18,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:29:18,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:29:18,045 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:29:18,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:29:18,046 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:29:18,047 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:29:18,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:29:18,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:29:18,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:29:18,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:29:18,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:29:18,050 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:29:18,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:29:18,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:29:18,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:29:18,052 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:29:18,052 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:29:18,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:29:18,053 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:29:18,053 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_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a [2023-11-06 22:29:18,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:29:18,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:29:18,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:29:18,400 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:29:18,401 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:29:18,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-06 22:29:21,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:29:22,077 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:29:22,078 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-06 22:29:22,090 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/data/faa34f6e0/2ff5079aa6494392a491d7432b972bee/FLAGd6f2ff343 [2023-11-06 22:29:22,108 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/data/faa34f6e0/2ff5079aa6494392a491d7432b972bee [2023-11-06 22:29:22,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:29:22,121 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:29:22,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:29:22,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:29:22,132 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:29:22,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605c757a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22, skipping insertion in model container [2023-11-06 22:29:22,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,167 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:29:22,411 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_163ee7ae-8fb5-4923-9d02-8422887adf93/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-11-06 22:29:22,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:29:22,434 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:29:22,458 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_163ee7ae-8fb5-4923-9d02-8422887adf93/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-11-06 22:29:22,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:29:22,478 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:29:22,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22 WrapperNode [2023-11-06 22:29:22,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:29:22,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:29:22,480 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:29:22,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:29:22,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,528 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 179 [2023-11-06 22:29:22,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:29:22,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:29:22,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:29:22,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:29:22,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:29:22,569 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:29:22,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:29:22,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:29:22,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (1/1) ... [2023-11-06 22:29:22,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:29:22,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:22,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:29:22,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:29:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:29:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:29:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:29:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:29:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:29:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:29:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:29:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:29:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:29:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:29:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:29:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:29:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:29:22,691 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:29:22,873 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:29:22,876 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:29:23,417 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:29:23,430 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:29:23,430 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:29:23,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:23 BoogieIcfgContainer [2023-11-06 22:29:23,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:29:23,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:29:23,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:29:23,441 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:29:23,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:29:22" (1/3) ... [2023-11-06 22:29:23,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ce1979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:23, skipping insertion in model container [2023-11-06 22:29:23,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:22" (2/3) ... [2023-11-06 22:29:23,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ce1979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:23, skipping insertion in model container [2023-11-06 22:29:23,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:23" (3/3) ... [2023-11-06 22:29:23,448 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-11-06 22:29:23,460 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:29:23,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:29:23,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:29:23,474 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:29:23,640 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:29:23,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 214 transitions, 442 flow [2023-11-06 22:29:23,847 INFO L124 PetriNetUnfolderBase]: 19/212 cut-off events. [2023-11-06 22:29:23,848 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:29:23,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 212 events. 19/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 218 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 152. Up to 3 conditions per place. [2023-11-06 22:29:23,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 214 transitions, 442 flow [2023-11-06 22:29:23,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 203 transitions, 418 flow [2023-11-06 22:29:23,867 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:29:23,877 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 203 transitions, 418 flow [2023-11-06 22:29:23,880 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 203 transitions, 418 flow [2023-11-06 22:29:23,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 203 transitions, 418 flow [2023-11-06 22:29:23,935 INFO L124 PetriNetUnfolderBase]: 19/203 cut-off events. [2023-11-06 22:29:23,935 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:29:23,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 203 events. 19/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 217 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 152. Up to 3 conditions per place. [2023-11-06 22:29:23,940 INFO L119 LiptonReduction]: Number of co-enabled transitions 3500 [2023-11-06 22:29:30,997 INFO L134 LiptonReduction]: Checked pairs total: 4185 [2023-11-06 22:29:30,997 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-11-06 22:29:31,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:29:31,035 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=LoopsAndPotentialCycles, 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;@142922fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:29:31,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 22:29:31,058 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:29:31,061 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2023-11-06 22:29:31,061 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:29:31,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:31,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:31,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:31,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1466715974, now seen corresponding path program 1 times [2023-11-06 22:29:31,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:31,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207612095] [2023-11-06 22:29:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:31,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:31,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:31,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207612095] [2023-11-06 22:29:31,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207612095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:31,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:29:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253713874] [2023-11-06 22:29:31,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:31,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:29:31,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:29:31,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:29:31,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 442 [2023-11-06 22:29:31,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:31,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:31,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 442 [2023-11-06 22:29:31,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:31,875 INFO L124 PetriNetUnfolderBase]: 91/158 cut-off events. [2023-11-06 22:29:31,875 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:29:31,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 158 events. 91/158 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 404 event pairs, 51 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 278. Up to 151 conditions per place. [2023-11-06 22:29:31,880 INFO L140 encePairwiseOnDemand]: 437/442 looper letters, 22 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-11-06 22:29:31,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 118 flow [2023-11-06 22:29:31,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:29:31,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:29:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-11-06 22:29:31,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419306184012066 [2023-11-06 22:29:31,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-11-06 22:29:31,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-11-06 22:29:31,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:31,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-11-06 22:29:31,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:31,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:31,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:31,941 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 3 states and 586 transitions. [2023-11-06 22:29:31,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 118 flow [2023-11-06 22:29:31,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:29:31,948 INFO L231 Difference]: Finished difference. Result has 25 places, 27 transitions, 76 flow [2023-11-06 22:29:31,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=25, PETRI_TRANSITIONS=27} [2023-11-06 22:29:31,958 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-11-06 22:29:31,958 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 27 transitions, 76 flow [2023-11-06 22:29:31,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:31,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:31,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:31,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:29:31,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:31,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:31,961 INFO L85 PathProgramCache]: Analyzing trace with hash 216800147, now seen corresponding path program 1 times [2023-11-06 22:29:31,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:31,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67561094] [2023-11-06 22:29:31,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:31,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:29:32,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:32,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67561094] [2023-11-06 22:29:32,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67561094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:32,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:32,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:29:32,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137694742] [2023-11-06 22:29:32,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:32,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:29:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:32,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:29:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:29:32,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 442 [2023-11-06 22:29:32,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:32,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:32,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 442 [2023-11-06 22:29:32,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:32,371 INFO L124 PetriNetUnfolderBase]: 173/314 cut-off events. [2023-11-06 22:29:32,371 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:29:32,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 314 events. 173/314 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1126 event pairs, 51 based on Foata normal form. 4/239 useless extension candidates. Maximal degree in co-relation 617. Up to 147 conditions per place. [2023-11-06 22:29:32,375 INFO L140 encePairwiseOnDemand]: 436/442 looper letters, 45 selfloop transitions, 5 changer transitions 2/53 dead transitions. [2023-11-06 22:29:32,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 53 transitions, 238 flow [2023-11-06 22:29:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:29:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:29:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1011 transitions. [2023-11-06 22:29:32,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574660633484163 [2023-11-06 22:29:32,381 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1011 transitions. [2023-11-06 22:29:32,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1011 transitions. [2023-11-06 22:29:32,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:32,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1011 transitions. [2023-11-06 22:29:32,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:32,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:32,394 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 442.0) internal successors, (2652), 6 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:32,394 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 76 flow. Second operand 5 states and 1011 transitions. [2023-11-06 22:29:32,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 53 transitions, 238 flow [2023-11-06 22:29:32,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 53 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:29:32,397 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 96 flow [2023-11-06 22:29:32,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-11-06 22:29:32,398 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-11-06 22:29:32,399 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 96 flow [2023-11-06 22:29:32,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:32,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:32,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:32,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:29:32,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:32,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1601281797, now seen corresponding path program 2 times [2023-11-06 22:29:32,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:32,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788212958] [2023-11-06 22:29:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:32,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:29:32,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788212958] [2023-11-06 22:29:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788212958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:32,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:32,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:29:32,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497828014] [2023-11-06 22:29:32,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:32,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:29:32,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:32,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:29:32,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:29:32,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 442 [2023-11-06 22:29:32,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:32,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:32,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 442 [2023-11-06 22:29:32,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:32,808 INFO L124 PetriNetUnfolderBase]: 211/378 cut-off events. [2023-11-06 22:29:32,809 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-06 22:29:32,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 378 events. 211/378 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1383 event pairs, 50 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 829. Up to 271 conditions per place. [2023-11-06 22:29:32,817 INFO L140 encePairwiseOnDemand]: 437/442 looper letters, 43 selfloop transitions, 4 changer transitions 3/51 dead transitions. [2023-11-06 22:29:32,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 51 transitions, 256 flow [2023-11-06 22:29:32,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:29:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:29:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 815 transitions. [2023-11-06 22:29:32,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46097285067873306 [2023-11-06 22:29:32,821 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 815 transitions. [2023-11-06 22:29:32,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 815 transitions. [2023-11-06 22:29:32,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:32,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 815 transitions. [2023-11-06 22:29:32,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.75) internal successors, (815), 4 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:32,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 442.0) internal successors, (2210), 5 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:32,833 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 442.0) internal successors, (2210), 5 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:32,833 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 96 flow. Second operand 4 states and 815 transitions. [2023-11-06 22:29:32,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 51 transitions, 256 flow [2023-11-06 22:29:32,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 51 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:29:32,838 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 130 flow [2023-11-06 22:29:32,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2023-11-06 22:29:32,840 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-11-06 22:29:32,844 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 130 flow [2023-11-06 22:29:32,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:32,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:32,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:32,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:29:32,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:32,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1935210121, now seen corresponding path program 3 times [2023-11-06 22:29:32,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:32,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226068504] [2023-11-06 22:29:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:32,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:29:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226068504] [2023-11-06 22:29:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226068504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:32,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:32,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:29:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762301775] [2023-11-06 22:29:32,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:32,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:29:32,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:29:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:29:33,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 442 [2023-11-06 22:29:33,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:33,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:33,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 442 [2023-11-06 22:29:33,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:33,173 INFO L124 PetriNetUnfolderBase]: 201/358 cut-off events. [2023-11-06 22:29:33,173 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2023-11-06 22:29:33,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 358 events. 201/358 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1275 event pairs, 53 based on Foata normal form. 4/302 useless extension candidates. Maximal degree in co-relation 855. Up to 160 conditions per place. [2023-11-06 22:29:33,177 INFO L140 encePairwiseOnDemand]: 437/442 looper letters, 46 selfloop transitions, 7 changer transitions 3/57 dead transitions. [2023-11-06 22:29:33,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 57 transitions, 309 flow [2023-11-06 22:29:33,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:29:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:29:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 819 transitions. [2023-11-06 22:29:33,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632352941176471 [2023-11-06 22:29:33,182 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 819 transitions. [2023-11-06 22:29:33,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 819 transitions. [2023-11-06 22:29:33,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:33,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 819 transitions. [2023-11-06 22:29:33,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.75) internal successors, (819), 4 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:33,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 442.0) internal successors, (2210), 5 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:33,194 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 442.0) internal successors, (2210), 5 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:33,194 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 130 flow. Second operand 4 states and 819 transitions. [2023-11-06 22:29:33,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 57 transitions, 309 flow [2023-11-06 22:29:33,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 57 transitions, 305 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-06 22:29:33,199 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 155 flow [2023-11-06 22:29:33,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-11-06 22:29:33,200 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-11-06 22:29:33,201 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 155 flow [2023-11-06 22:29:33,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:33,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:33,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:33,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:29:33,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:33,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:33,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1602987380, now seen corresponding path program 1 times [2023-11-06 22:29:33,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:33,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370856871] [2023-11-06 22:29:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:33,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:33,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:33,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370856871] [2023-11-06 22:29:33,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370856871] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:33,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037635541] [2023-11-06 22:29:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:33,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:33,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:33,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:33,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:29:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:33,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:29:33,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:33,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:29:33,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037635541] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:29:33,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:29:33,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-06 22:29:33,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240506680] [2023-11-06 22:29:33,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:33,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:29:33,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:33,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:29:33,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:29:33,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 442 [2023-11-06 22:29:33,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 155 flow. Second operand has 8 states, 8 states have (on average 185.125) internal successors, (1481), 8 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:33,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:33,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 442 [2023-11-06 22:29:33,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:33,907 INFO L124 PetriNetUnfolderBase]: 198/355 cut-off events. [2023-11-06 22:29:33,908 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2023-11-06 22:29:33,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 355 events. 198/355 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1199 event pairs, 114 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 856. Up to 332 conditions per place. [2023-11-06 22:29:33,913 INFO L140 encePairwiseOnDemand]: 437/442 looper letters, 29 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2023-11-06 22:29:33,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 257 flow [2023-11-06 22:29:33,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:29:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:29:33,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1130 transitions. [2023-11-06 22:29:33,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42609351432880843 [2023-11-06 22:29:33,919 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1130 transitions. [2023-11-06 22:29:33,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1130 transitions. [2023-11-06 22:29:33,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:33,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1130 transitions. [2023-11-06 22:29:33,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.33333333333334) internal successors, (1130), 6 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:33,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:33,939 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:33,939 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 155 flow. Second operand 6 states and 1130 transitions. [2023-11-06 22:29:33,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 257 flow [2023-11-06 22:29:33,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 245 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:29:33,946 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 209 flow [2023-11-06 22:29:33,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-11-06 22:29:33,949 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2023-11-06 22:29:33,949 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 209 flow [2023-11-06 22:29:33,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 185.125) internal successors, (1481), 8 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:33,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:33,950 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:33,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:34,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:34,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:34,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:34,158 INFO L85 PathProgramCache]: Analyzing trace with hash 915588019, now seen corresponding path program 2 times [2023-11-06 22:29:34,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:34,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433340304] [2023-11-06 22:29:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:34,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:29:34,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:34,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433340304] [2023-11-06 22:29:34,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433340304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:34,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699179854] [2023-11-06 22:29:34,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:29:34,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:34,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:34,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:34,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:29:34,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:29:34,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:29:34,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:29:34,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:29:34,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:34,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699179854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:34,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:29:34,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 15 [2023-11-06 22:29:34,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907765134] [2023-11-06 22:29:34,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:34,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:29:34,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:29:34,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:29:35,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2023-11-06 22:29:35,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 209 flow. Second operand has 11 states, 11 states have (on average 169.72727272727272) internal successors, (1867), 11 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:35,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:35,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2023-11-06 22:29:35,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:35,976 INFO L124 PetriNetUnfolderBase]: 259/477 cut-off events. [2023-11-06 22:29:35,976 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-11-06 22:29:35,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 477 events. 259/477 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1863 event pairs, 68 based on Foata normal form. 13/408 useless extension candidates. Maximal degree in co-relation 1096. Up to 152 conditions per place. [2023-11-06 22:29:35,981 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 63 selfloop transitions, 15 changer transitions 10/89 dead transitions. [2023-11-06 22:29:35,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 89 transitions, 506 flow [2023-11-06 22:29:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:29:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:29:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1757 transitions. [2023-11-06 22:29:35,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39751131221719455 [2023-11-06 22:29:35,991 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1757 transitions. [2023-11-06 22:29:35,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1757 transitions. [2023-11-06 22:29:35,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:35,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1757 transitions. [2023-11-06 22:29:35,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 175.7) internal successors, (1757), 10 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:36,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:36,010 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:36,010 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 209 flow. Second operand 10 states and 1757 transitions. [2023-11-06 22:29:36,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 89 transitions, 506 flow [2023-11-06 22:29:36,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 89 transitions, 490 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:29:36,016 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 285 flow [2023-11-06 22:29:36,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-06 22:29:36,019 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2023-11-06 22:29:36,019 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 285 flow [2023-11-06 22:29:36,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.72727272727272) internal successors, (1867), 11 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:36,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:36,021 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:36,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:36,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:29:36,227 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:36,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash 829769257, now seen corresponding path program 3 times [2023-11-06 22:29:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:36,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21431916] [2023-11-06 22:29:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:36,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:29:36,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:36,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21431916] [2023-11-06 22:29:36,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21431916] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:36,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463455280] [2023-11-06 22:29:36,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:29:36,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:36,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:36,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:36,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:29:36,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:29:36,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:29:36,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:29:36,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:37,025 INFO L322 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-11-06 22:29:37,026 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 53 [2023-11-06 22:29:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:29:37,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:37,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463455280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:37,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:29:37,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 15 [2023-11-06 22:29:37,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277236543] [2023-11-06 22:29:37,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:37,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:29:37,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:37,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:29:37,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:29:37,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 442 [2023-11-06 22:29:37,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 285 flow. Second operand has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:37,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:37,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 442 [2023-11-06 22:29:37,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:38,305 INFO L124 PetriNetUnfolderBase]: 269/497 cut-off events. [2023-11-06 22:29:38,305 INFO L125 PetriNetUnfolderBase]: For 479/481 co-relation queries the response was YES. [2023-11-06 22:29:38,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1567 conditions, 497 events. 269/497 cut-off events. For 479/481 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2006 event pairs, 56 based on Foata normal form. 3/441 useless extension candidates. Maximal degree in co-relation 1533. Up to 234 conditions per place. [2023-11-06 22:29:38,311 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 57 selfloop transitions, 18 changer transitions 7/83 dead transitions. [2023-11-06 22:29:38,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 573 flow [2023-11-06 22:29:38,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:29:38,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:29:38,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1756 transitions. [2023-11-06 22:29:38,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39728506787330314 [2023-11-06 22:29:38,321 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1756 transitions. [2023-11-06 22:29:38,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1756 transitions. [2023-11-06 22:29:38,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:38,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1756 transitions. [2023-11-06 22:29:38,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 175.6) internal successors, (1756), 10 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:38,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:38,339 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:38,339 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 285 flow. Second operand 10 states and 1756 transitions. [2023-11-06 22:29:38,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 573 flow [2023-11-06 22:29:38,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 550 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-06 22:29:38,347 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 363 flow [2023-11-06 22:29:38,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=363, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2023-11-06 22:29:38,348 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 37 predicate places. [2023-11-06 22:29:38,348 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 363 flow [2023-11-06 22:29:38,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:38,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:38,350 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:38,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:38,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:29:38,557 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:38,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1169045023, now seen corresponding path program 4 times [2023-11-06 22:29:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:38,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293162435] [2023-11-06 22:29:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:38,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:38,763 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:29:38,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:38,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293162435] [2023-11-06 22:29:38,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293162435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:38,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307872501] [2023-11-06 22:29:38,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:29:38,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:38,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:38,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:38,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:29:38,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:29:38,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:29:38,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:29:38,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:29:39,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:39,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307872501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:39,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:29:39,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-11-06 22:29:39,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905076668] [2023-11-06 22:29:39,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:39,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:29:39,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:29:39,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:29:39,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 442 [2023-11-06 22:29:39,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 363 flow. Second operand has 8 states, 8 states have (on average 176.375) internal successors, (1411), 8 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:39,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:39,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 442 [2023-11-06 22:29:39,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:39,861 INFO L124 PetriNetUnfolderBase]: 272/512 cut-off events. [2023-11-06 22:29:39,861 INFO L125 PetriNetUnfolderBase]: For 749/751 co-relation queries the response was YES. [2023-11-06 22:29:39,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 512 events. 272/512 cut-off events. For 749/751 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2116 event pairs, 72 based on Foata normal form. 3/460 useless extension candidates. Maximal degree in co-relation 1718. Up to 163 conditions per place. [2023-11-06 22:29:39,867 INFO L140 encePairwiseOnDemand]: 431/442 looper letters, 71 selfloop transitions, 17 changer transitions 5/94 dead transitions. [2023-11-06 22:29:39,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 686 flow [2023-11-06 22:29:39,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:29:39,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:29:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1468 transitions. [2023-11-06 22:29:39,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415158371040724 [2023-11-06 22:29:39,874 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1468 transitions. [2023-11-06 22:29:39,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1468 transitions. [2023-11-06 22:29:39,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:39,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1468 transitions. [2023-11-06 22:29:39,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 183.5) internal successors, (1468), 8 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:39,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 442.0) internal successors, (3978), 9 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:39,889 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 442.0) internal successors, (3978), 9 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:39,890 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 363 flow. Second operand 8 states and 1468 transitions. [2023-11-06 22:29:39,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 686 flow [2023-11-06 22:29:39,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 94 transitions, 638 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-06 22:29:39,897 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 391 flow [2023-11-06 22:29:39,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=391, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-11-06 22:29:39,900 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2023-11-06 22:29:39,900 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 391 flow [2023-11-06 22:29:39,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 176.375) internal successors, (1411), 8 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:39,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:39,902 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:39,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:40,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:40,119 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:40,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:40,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1861685773, now seen corresponding path program 5 times [2023-11-06 22:29:40,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:40,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105508685] [2023-11-06 22:29:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:40,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:29:40,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:40,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105508685] [2023-11-06 22:29:40,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105508685] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:40,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633984030] [2023-11-06 22:29:40,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:29:40,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:40,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:40,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:40,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:29:40,494 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-06 22:29:40,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:29:40,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:29:40,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:29:40,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:29:40,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633984030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:29:40,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:29:40,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:29:40,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848731258] [2023-11-06 22:29:40,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:40,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:29:40,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:40,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:29:40,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:29:40,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 442 [2023-11-06 22:29:40,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 391 flow. Second operand has 13 states, 13 states have (on average 184.30769230769232) internal successors, (2396), 13 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:40,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:40,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 442 [2023-11-06 22:29:40,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:41,094 INFO L124 PetriNetUnfolderBase]: 269/507 cut-off events. [2023-11-06 22:29:41,094 INFO L125 PetriNetUnfolderBase]: For 1285/1285 co-relation queries the response was YES. [2023-11-06 22:29:41,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 507 events. 269/507 cut-off events. For 1285/1285 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2066 event pairs, 143 based on Foata normal form. 1/505 useless extension candidates. Maximal degree in co-relation 1891. Up to 477 conditions per place. [2023-11-06 22:29:41,102 INFO L140 encePairwiseOnDemand]: 437/442 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2023-11-06 22:29:41,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 58 transitions, 517 flow [2023-11-06 22:29:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:29:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:29:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1310 transitions. [2023-11-06 22:29:41,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234001292824822 [2023-11-06 22:29:41,110 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1310 transitions. [2023-11-06 22:29:41,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1310 transitions. [2023-11-06 22:29:41,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:41,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1310 transitions. [2023-11-06 22:29:41,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.14285714285714) internal successors, (1310), 7 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:41,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 442.0) internal successors, (3536), 8 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:41,137 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 442.0) internal successors, (3536), 8 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:41,146 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 391 flow. Second operand 7 states and 1310 transitions. [2023-11-06 22:29:41,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 58 transitions, 517 flow [2023-11-06 22:29:41,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 485 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-06 22:29:41,155 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 405 flow [2023-11-06 22:29:41,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=405, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-11-06 22:29:41,157 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2023-11-06 22:29:41,158 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 405 flow [2023-11-06 22:29:41,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 184.30769230769232) internal successors, (2396), 13 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:41,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:41,160 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:41,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:41,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:41,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:41,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:41,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1646141730, now seen corresponding path program 6 times [2023-11-06 22:29:41,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:41,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244304290] [2023-11-06 22:29:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:41,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:29:42,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:42,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244304290] [2023-11-06 22:29:42,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244304290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:42,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:42,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:29:42,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418963688] [2023-11-06 22:29:42,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:42,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:29:42,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:42,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:29:42,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:29:43,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2023-11-06 22:29:43,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 405 flow. Second operand has 11 states, 11 states have (on average 169.72727272727272) internal successors, (1867), 11 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:43,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:43,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2023-11-06 22:29:43,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:43,649 INFO L124 PetriNetUnfolderBase]: 279/519 cut-off events. [2023-11-06 22:29:43,649 INFO L125 PetriNetUnfolderBase]: For 1142/1144 co-relation queries the response was YES. [2023-11-06 22:29:43,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 519 events. 279/519 cut-off events. For 1142/1144 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2107 event pairs, 37 based on Foata normal form. 3/522 useless extension candidates. Maximal degree in co-relation 1868. Up to 131 conditions per place. [2023-11-06 22:29:43,655 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 86 selfloop transitions, 32 changer transitions 15/134 dead transitions. [2023-11-06 22:29:43,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 134 transitions, 1028 flow [2023-11-06 22:29:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:29:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:29:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2631 transitions. [2023-11-06 22:29:43,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39683257918552034 [2023-11-06 22:29:43,665 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2631 transitions. [2023-11-06 22:29:43,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2631 transitions. [2023-11-06 22:29:43,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:43,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2631 transitions. [2023-11-06 22:29:43,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 175.4) internal successors, (2631), 15 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:43,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:43,689 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:43,689 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 405 flow. Second operand 15 states and 2631 transitions. [2023-11-06 22:29:43,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 134 transitions, 1028 flow [2023-11-06 22:29:43,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 134 transitions, 1004 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-06 22:29:43,698 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 589 flow [2023-11-06 22:29:43,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=589, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2023-11-06 22:29:43,699 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 55 predicate places. [2023-11-06 22:29:43,700 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 589 flow [2023-11-06 22:29:43,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.72727272727272) internal successors, (1867), 11 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:43,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:43,701 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:43,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:29:43,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:43,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:43,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1863685338, now seen corresponding path program 7 times [2023-11-06 22:29:43,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:43,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529796244] [2023-11-06 22:29:43,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:43,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:29:44,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:44,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529796244] [2023-11-06 22:29:44,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529796244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:44,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:44,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:29:44,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618653371] [2023-11-06 22:29:44,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:44,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:29:44,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:29:44,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:29:45,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 442 [2023-11-06 22:29:45,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 589 flow. Second operand has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:45,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:45,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 442 [2023-11-06 22:29:45,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:46,134 INFO L124 PetriNetUnfolderBase]: 280/526 cut-off events. [2023-11-06 22:29:46,135 INFO L125 PetriNetUnfolderBase]: For 1576/1578 co-relation queries the response was YES. [2023-11-06 22:29:46,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 526 events. 280/526 cut-off events. For 1576/1578 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2165 event pairs, 35 based on Foata normal form. 9/535 useless extension candidates. Maximal degree in co-relation 2178. Up to 144 conditions per place. [2023-11-06 22:29:46,142 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 89 selfloop transitions, 34 changer transitions 6/130 dead transitions. [2023-11-06 22:29:46,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 1088 flow [2023-11-06 22:29:46,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:29:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:29:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2643 transitions. [2023-11-06 22:29:46,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3986425339366516 [2023-11-06 22:29:46,154 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2643 transitions. [2023-11-06 22:29:46,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2643 transitions. [2023-11-06 22:29:46,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:46,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2643 transitions. [2023-11-06 22:29:46,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 176.2) internal successors, (2643), 15 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:46,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:46,184 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:46,184 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 589 flow. Second operand 15 states and 2643 transitions. [2023-11-06 22:29:46,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 1088 flow [2023-11-06 22:29:46,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 130 transitions, 1029 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-11-06 22:29:46,198 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 653 flow [2023-11-06 22:29:46,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=653, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2023-11-06 22:29:46,199 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2023-11-06 22:29:46,199 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 653 flow [2023-11-06 22:29:46,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:46,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:46,200 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:46,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:29:46,201 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:46,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:46,201 INFO L85 PathProgramCache]: Analyzing trace with hash -969955338, now seen corresponding path program 8 times [2023-11-06 22:29:46,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:46,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570075873] [2023-11-06 22:29:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:46,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:29:48,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:48,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570075873] [2023-11-06 22:29:48,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570075873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:48,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651460164] [2023-11-06 22:29:48,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:29:48,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:48,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:48,030 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:48,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:29:48,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:29:48,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:29:48,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:29:48,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:29:48,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:29:48,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651460164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:48,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:29:48,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2023-11-06 22:29:48,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295136247] [2023-11-06 22:29:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:48,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:29:48,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:48,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:29:48,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:29:49,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2023-11-06 22:29:49,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 653 flow. Second operand has 11 states, 11 states have (on average 169.72727272727272) internal successors, (1867), 11 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:49,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:49,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2023-11-06 22:29:49,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:49,532 INFO L124 PetriNetUnfolderBase]: 276/518 cut-off events. [2023-11-06 22:29:49,532 INFO L125 PetriNetUnfolderBase]: For 1751/1753 co-relation queries the response was YES. [2023-11-06 22:29:49,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2280 conditions, 518 events. 276/518 cut-off events. For 1751/1753 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2120 event pairs, 71 based on Foata normal form. 3/521 useless extension candidates. Maximal degree in co-relation 2236. Up to 230 conditions per place. [2023-11-06 22:29:49,539 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 65 selfloop transitions, 23 changer transitions 9/98 dead transitions. [2023-11-06 22:29:49,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 98 transitions, 935 flow [2023-11-06 22:29:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:29:49,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:29:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1744 transitions. [2023-11-06 22:29:49,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945701357466063 [2023-11-06 22:29:49,547 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1744 transitions. [2023-11-06 22:29:49,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1744 transitions. [2023-11-06 22:29:49,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:49,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1744 transitions. [2023-11-06 22:29:49,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 174.4) internal successors, (1744), 10 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:49,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:49,565 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:49,566 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 653 flow. Second operand 10 states and 1744 transitions. [2023-11-06 22:29:49,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 98 transitions, 935 flow [2023-11-06 22:29:49,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 98 transitions, 853 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-11-06 22:29:49,583 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 596 flow [2023-11-06 22:29:49,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=596, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2023-11-06 22:29:49,585 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 58 predicate places. [2023-11-06 22:29:49,585 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 596 flow [2023-11-06 22:29:49,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.72727272727272) internal successors, (1867), 11 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:49,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:49,586 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:49,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:49,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:29:49,794 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:49,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:49,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1792628696, now seen corresponding path program 9 times [2023-11-06 22:29:49,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:49,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096375867] [2023-11-06 22:29:49,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:49,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:29:50,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:50,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096375867] [2023-11-06 22:29:50,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096375867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:50,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:50,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:29:50,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640607977] [2023-11-06 22:29:50,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:50,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:29:50,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:50,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:29:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:29:51,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 442 [2023-11-06 22:29:51,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 596 flow. Second operand has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:51,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:51,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 442 [2023-11-06 22:29:51,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:52,034 INFO L124 PetriNetUnfolderBase]: 332/614 cut-off events. [2023-11-06 22:29:52,034 INFO L125 PetriNetUnfolderBase]: For 1772/1774 co-relation queries the response was YES. [2023-11-06 22:29:52,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 614 events. 332/614 cut-off events. For 1772/1774 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2622 event pairs, 38 based on Foata normal form. 7/621 useless extension candidates. Maximal degree in co-relation 2508. Up to 165 conditions per place. [2023-11-06 22:29:52,042 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 106 selfloop transitions, 38 changer transitions 6/151 dead transitions. [2023-11-06 22:29:52,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 151 transitions, 1309 flow [2023-11-06 22:29:52,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:29:52,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:29:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2653 transitions. [2023-11-06 22:29:52,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4001508295625943 [2023-11-06 22:29:52,055 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2653 transitions. [2023-11-06 22:29:52,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2653 transitions. [2023-11-06 22:29:52,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:52,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2653 transitions. [2023-11-06 22:29:52,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 176.86666666666667) internal successors, (2653), 15 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:52,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:52,081 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:52,082 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 596 flow. Second operand 15 states and 2653 transitions. [2023-11-06 22:29:52,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 151 transitions, 1309 flow [2023-11-06 22:29:52,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 151 transitions, 1198 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-11-06 22:29:52,094 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 849 flow [2023-11-06 22:29:52,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=849, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2023-11-06 22:29:52,095 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2023-11-06 22:29:52,096 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 849 flow [2023-11-06 22:29:52,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:52,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:52,097 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:52,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:29:52,097 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:52,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:52,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1027685296, now seen corresponding path program 10 times [2023-11-06 22:29:52,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:52,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593374639] [2023-11-06 22:29:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:52,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:29:52,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:52,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593374639] [2023-11-06 22:29:52,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593374639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:52,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:52,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:29:52,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004927859] [2023-11-06 22:29:52,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:52,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:29:52,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:52,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:29:52,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:29:53,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 442 [2023-11-06 22:29:53,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 849 flow. Second operand has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:53,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:53,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 442 [2023-11-06 22:29:53,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:53,893 INFO L124 PetriNetUnfolderBase]: 332/616 cut-off events. [2023-11-06 22:29:53,893 INFO L125 PetriNetUnfolderBase]: For 3197/3199 co-relation queries the response was YES. [2023-11-06 22:29:53,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3032 conditions, 616 events. 332/616 cut-off events. For 3197/3199 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2647 event pairs, 38 based on Foata normal form. 1/617 useless extension candidates. Maximal degree in co-relation 2976. Up to 162 conditions per place. [2023-11-06 22:29:53,901 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 105 selfloop transitions, 34 changer transitions 7/147 dead transitions. [2023-11-06 22:29:53,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 147 transitions, 1406 flow [2023-11-06 22:29:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:29:53,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:29:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2301 transitions. [2023-11-06 22:29:53,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004524886877828 [2023-11-06 22:29:53,907 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2301 transitions. [2023-11-06 22:29:53,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2301 transitions. [2023-11-06 22:29:53,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:53,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2301 transitions. [2023-11-06 22:29:53,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 177.0) internal successors, (2301), 13 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:53,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 442.0) internal successors, (6188), 14 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:53,924 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 442.0) internal successors, (6188), 14 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:53,924 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 849 flow. Second operand 13 states and 2301 transitions. [2023-11-06 22:29:53,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 147 transitions, 1406 flow [2023-11-06 22:29:53,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 147 transitions, 1335 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-06 22:29:53,948 INFO L231 Difference]: Finished difference. Result has 101 places, 91 transitions, 895 flow [2023-11-06 22:29:53,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=895, PETRI_PLACES=101, PETRI_TRANSITIONS=91} [2023-11-06 22:29:53,949 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2023-11-06 22:29:53,949 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 91 transitions, 895 flow [2023-11-06 22:29:53,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:53,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:53,950 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:53,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:29:53,951 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:53,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1820348414, now seen corresponding path program 11 times [2023-11-06 22:29:53,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:53,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055744401] [2023-11-06 22:29:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:53,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:29:54,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:54,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055744401] [2023-11-06 22:29:54,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055744401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:54,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:54,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:29:54,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120030289] [2023-11-06 22:29:54,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:54,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:29:54,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:54,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:29:54,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:29:55,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 442 [2023-11-06 22:29:55,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 91 transitions, 895 flow. Second operand has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 11 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:55,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:55,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 442 [2023-11-06 22:29:55,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:55,923 INFO L124 PetriNetUnfolderBase]: 330/614 cut-off events. [2023-11-06 22:29:55,923 INFO L125 PetriNetUnfolderBase]: For 3089/3091 co-relation queries the response was YES. [2023-11-06 22:29:55,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3032 conditions, 614 events. 330/614 cut-off events. For 3089/3091 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2657 event pairs, 42 based on Foata normal form. 1/615 useless extension candidates. Maximal degree in co-relation 2974. Up to 162 conditions per place. [2023-11-06 22:29:55,933 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 102 selfloop transitions, 37 changer transitions 7/147 dead transitions. [2023-11-06 22:29:55,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 147 transitions, 1413 flow [2023-11-06 22:29:55,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:29:55,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:29:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2490 transitions. [2023-11-06 22:29:55,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023917259211377 [2023-11-06 22:29:55,967 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2490 transitions. [2023-11-06 22:29:55,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2490 transitions. [2023-11-06 22:29:55,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:55,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2490 transitions. [2023-11-06 22:29:55,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 177.85714285714286) internal successors, (2490), 14 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:55,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 442.0) internal successors, (6630), 15 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:55,994 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 442.0) internal successors, (6630), 15 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:55,994 INFO L175 Difference]: Start difference. First operand has 101 places, 91 transitions, 895 flow. Second operand 14 states and 2490 transitions. [2023-11-06 22:29:55,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 147 transitions, 1413 flow [2023-11-06 22:29:56,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 147 transitions, 1341 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-06 22:29:56,023 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 892 flow [2023-11-06 22:29:56,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=892, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2023-11-06 22:29:56,026 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 79 predicate places. [2023-11-06 22:29:56,026 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 892 flow [2023-11-06 22:29:56,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 11 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:56,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:56,027 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:56,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:29:56,027 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:56,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:56,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1608608600, now seen corresponding path program 12 times [2023-11-06 22:29:56,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:56,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559260407] [2023-11-06 22:29:56,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:56,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:29:56,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:56,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559260407] [2023-11-06 22:29:56,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559260407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:56,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:56,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:29:56,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594580505] [2023-11-06 22:29:56,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:56,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:29:56,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:56,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:29:56,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:29:57,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 442 [2023-11-06 22:29:57,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 892 flow. Second operand has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:57,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:29:57,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 442 [2023-11-06 22:29:57,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:29:58,172 INFO L124 PetriNetUnfolderBase]: 328/604 cut-off events. [2023-11-06 22:29:58,173 INFO L125 PetriNetUnfolderBase]: For 3027/3029 co-relation queries the response was YES. [2023-11-06 22:29:58,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 604 events. 328/604 cut-off events. For 3027/3029 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2578 event pairs, 42 based on Foata normal form. 1/605 useless extension candidates. Maximal degree in co-relation 2952. Up to 162 conditions per place. [2023-11-06 22:29:58,182 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 99 selfloop transitions, 35 changer transitions 9/144 dead transitions. [2023-11-06 22:29:58,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 144 transitions, 1392 flow [2023-11-06 22:29:58,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:29:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:29:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2474 transitions. [2023-11-06 22:29:58,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39980607627666453 [2023-11-06 22:29:58,188 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2474 transitions. [2023-11-06 22:29:58,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2474 transitions. [2023-11-06 22:29:58,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:29:58,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2474 transitions. [2023-11-06 22:29:58,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 176.71428571428572) internal successors, (2474), 14 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:58,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 442.0) internal successors, (6630), 15 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:58,205 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 442.0) internal successors, (6630), 15 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:58,205 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 892 flow. Second operand 14 states and 2474 transitions. [2023-11-06 22:29:58,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 144 transitions, 1392 flow [2023-11-06 22:29:58,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 144 transitions, 1304 flow, removed 5 selfloop flow, removed 14 redundant places. [2023-11-06 22:29:58,227 INFO L231 Difference]: Finished difference. Result has 103 places, 87 transitions, 848 flow [2023-11-06 22:29:58,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=848, PETRI_PLACES=103, PETRI_TRANSITIONS=87} [2023-11-06 22:29:58,228 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 77 predicate places. [2023-11-06 22:29:58,228 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 87 transitions, 848 flow [2023-11-06 22:29:58,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:29:58,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:29:58,230 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:29:58,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:29:58,230 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:29:58,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:58,231 INFO L85 PathProgramCache]: Analyzing trace with hash 477779574, now seen corresponding path program 13 times [2023-11-06 22:29:58,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:58,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652296648] [2023-11-06 22:29:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:58,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:29:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652296648] [2023-11-06 22:29:59,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652296648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:29:59,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:29:59,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:29:59,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575625377] [2023-11-06 22:29:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:29:59,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:29:59,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:29:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:30:00,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 442 [2023-11-06 22:30:00,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 87 transitions, 848 flow. Second operand has 12 states, 12 states have (on average 165.58333333333334) internal successors, (1987), 12 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:00,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:00,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 442 [2023-11-06 22:30:00,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:01,025 INFO L124 PetriNetUnfolderBase]: 361/683 cut-off events. [2023-11-06 22:30:01,026 INFO L125 PetriNetUnfolderBase]: For 3629/3631 co-relation queries the response was YES. [2023-11-06 22:30:01,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3355 conditions, 683 events. 361/683 cut-off events. For 3629/3631 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3092 event pairs, 42 based on Foata normal form. 22/705 useless extension candidates. Maximal degree in co-relation 3293. Up to 161 conditions per place. [2023-11-06 22:30:01,038 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 105 selfloop transitions, 52 changer transitions 6/164 dead transitions. [2023-11-06 22:30:01,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 164 transitions, 1633 flow [2023-11-06 22:30:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:30:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:30:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2577 transitions. [2023-11-06 22:30:01,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38868778280542987 [2023-11-06 22:30:01,048 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2577 transitions. [2023-11-06 22:30:01,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2577 transitions. [2023-11-06 22:30:01,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:01,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2577 transitions. [2023-11-06 22:30:01,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 171.8) internal successors, (2577), 15 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:01,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:01,073 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:01,074 INFO L175 Difference]: Start difference. First operand has 103 places, 87 transitions, 848 flow. Second operand 15 states and 2577 transitions. [2023-11-06 22:30:01,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 164 transitions, 1633 flow [2023-11-06 22:30:01,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 164 transitions, 1511 flow, removed 12 selfloop flow, removed 13 redundant places. [2023-11-06 22:30:01,103 INFO L231 Difference]: Finished difference. Result has 106 places, 101 transitions, 1076 flow [2023-11-06 22:30:01,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1076, PETRI_PLACES=106, PETRI_TRANSITIONS=101} [2023-11-06 22:30:01,104 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 80 predicate places. [2023-11-06 22:30:01,105 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 101 transitions, 1076 flow [2023-11-06 22:30:01,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 165.58333333333334) internal successors, (1987), 12 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:01,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:01,106 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:01,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:30:01,107 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:01,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:01,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1317784978, now seen corresponding path program 14 times [2023-11-06 22:30:01,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:01,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920963269] [2023-11-06 22:30:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:02,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:02,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920963269] [2023-11-06 22:30:02,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920963269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:02,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:02,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:30:02,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169209312] [2023-11-06 22:30:02,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:02,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:30:02,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:02,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:30:02,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:30:03,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 442 [2023-11-06 22:30:03,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 101 transitions, 1076 flow. Second operand has 12 states, 12 states have (on average 165.58333333333334) internal successors, (1987), 12 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:03,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:03,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 442 [2023-11-06 22:30:03,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:03,843 INFO L124 PetriNetUnfolderBase]: 361/685 cut-off events. [2023-11-06 22:30:03,843 INFO L125 PetriNetUnfolderBase]: For 3578/3580 co-relation queries the response was YES. [2023-11-06 22:30:03,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3511 conditions, 685 events. 361/685 cut-off events. For 3578/3580 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3126 event pairs, 45 based on Foata normal form. 1/686 useless extension candidates. Maximal degree in co-relation 3444. Up to 159 conditions per place. [2023-11-06 22:30:03,854 INFO L140 encePairwiseOnDemand]: 431/442 looper letters, 95 selfloop transitions, 51 changer transitions 11/158 dead transitions. [2023-11-06 22:30:03,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 158 transitions, 1682 flow [2023-11-06 22:30:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:30:03,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:30:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2399 transitions. [2023-11-06 22:30:03,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3876858435681965 [2023-11-06 22:30:03,862 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2399 transitions. [2023-11-06 22:30:03,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2399 transitions. [2023-11-06 22:30:03,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:03,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2399 transitions. [2023-11-06 22:30:03,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 171.35714285714286) internal successors, (2399), 14 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:03,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 442.0) internal successors, (6630), 15 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:03,878 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 442.0) internal successors, (6630), 15 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:03,878 INFO L175 Difference]: Start difference. First operand has 106 places, 101 transitions, 1076 flow. Second operand 14 states and 2399 transitions. [2023-11-06 22:30:03,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 158 transitions, 1682 flow [2023-11-06 22:30:03,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 158 transitions, 1643 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-06 22:30:03,910 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 1147 flow [2023-11-06 22:30:03,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1147, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2023-11-06 22:30:03,911 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 89 predicate places. [2023-11-06 22:30:03,911 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 1147 flow [2023-11-06 22:30:03,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 165.58333333333334) internal successors, (1987), 12 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:03,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:03,912 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:03,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:30:03,913 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:03,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:03,913 INFO L85 PathProgramCache]: Analyzing trace with hash -415950426, now seen corresponding path program 15 times [2023-11-06 22:30:03,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:03,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841285561] [2023-11-06 22:30:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:03,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:30:06,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:06,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841285561] [2023-11-06 22:30:06,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841285561] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:06,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689213017] [2023-11-06 22:30:06,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:30:06,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:06,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:06,109 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:06,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:30:06,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:30:06,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:30:06,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 22:30:06,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:06,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2023-11-06 22:30:06,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:30:06,764 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:30:06,764 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:30:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:07,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:07,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689213017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:07,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:30:07,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 27 [2023-11-06 22:30:07,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040927542] [2023-11-06 22:30:07,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:07,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:30:07,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:07,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:30:07,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:30:07,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 442 [2023-11-06 22:30:07,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 1147 flow. Second operand has 12 states, 12 states have (on average 165.58333333333334) internal successors, (1987), 12 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:07,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:07,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 442 [2023-11-06 22:30:07,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:08,450 INFO L124 PetriNetUnfolderBase]: 354/672 cut-off events. [2023-11-06 22:30:08,450 INFO L125 PetriNetUnfolderBase]: For 3850/3852 co-relation queries the response was YES. [2023-11-06 22:30:08,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3593 conditions, 672 events. 354/672 cut-off events. For 3850/3852 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3017 event pairs, 80 based on Foata normal form. 1/673 useless extension candidates. Maximal degree in co-relation 3528. Up to 174 conditions per place. [2023-11-06 22:30:08,460 INFO L140 encePairwiseOnDemand]: 431/442 looper letters, 88 selfloop transitions, 31 changer transitions 13/133 dead transitions. [2023-11-06 22:30:08,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 133 transitions, 1570 flow [2023-11-06 22:30:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:30:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:30:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1708 transitions. [2023-11-06 22:30:08,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38642533936651585 [2023-11-06 22:30:08,465 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1708 transitions. [2023-11-06 22:30:08,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1708 transitions. [2023-11-06 22:30:08,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:08,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1708 transitions. [2023-11-06 22:30:08,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 170.8) internal successors, (1708), 10 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:08,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:08,477 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:08,477 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 1147 flow. Second operand 10 states and 1708 transitions. [2023-11-06 22:30:08,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 133 transitions, 1570 flow [2023-11-06 22:30:08,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 133 transitions, 1461 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-11-06 22:30:08,507 INFO L231 Difference]: Finished difference. Result has 111 places, 96 transitions, 1060 flow [2023-11-06 22:30:08,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1060, PETRI_PLACES=111, PETRI_TRANSITIONS=96} [2023-11-06 22:30:08,508 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 85 predicate places. [2023-11-06 22:30:08,508 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 96 transitions, 1060 flow [2023-11-06 22:30:08,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 165.58333333333334) internal successors, (1987), 12 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:08,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:08,509 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:08,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:08,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:08,716 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:08,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:08,716 INFO L85 PathProgramCache]: Analyzing trace with hash -699212790, now seen corresponding path program 16 times [2023-11-06 22:30:08,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:08,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679525595] [2023-11-06 22:30:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:08,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:09,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:09,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679525595] [2023-11-06 22:30:09,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679525595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:09,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:09,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:30:09,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351279405] [2023-11-06 22:30:09,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:09,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:30:09,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:09,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:30:09,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:30:10,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 442 [2023-11-06 22:30:10,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 96 transitions, 1060 flow. Second operand has 12 states, 12 states have (on average 166.58333333333334) internal successors, (1999), 12 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:10,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:10,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 442 [2023-11-06 22:30:10,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:11,188 INFO L124 PetriNetUnfolderBase]: 341/649 cut-off events. [2023-11-06 22:30:11,189 INFO L125 PetriNetUnfolderBase]: For 3665/3667 co-relation queries the response was YES. [2023-11-06 22:30:11,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3394 conditions, 649 events. 341/649 cut-off events. For 3665/3667 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2910 event pairs, 36 based on Foata normal form. 7/656 useless extension candidates. Maximal degree in co-relation 3331. Up to 197 conditions per place. [2023-11-06 22:30:11,198 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 86 selfloop transitions, 57 changer transitions 6/150 dead transitions. [2023-11-06 22:30:11,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 150 transitions, 1625 flow [2023-11-06 22:30:11,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:30:11,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 22:30:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2743 transitions. [2023-11-06 22:30:11,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38786764705882354 [2023-11-06 22:30:11,205 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2743 transitions. [2023-11-06 22:30:11,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2743 transitions. [2023-11-06 22:30:11,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:11,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2743 transitions. [2023-11-06 22:30:11,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.4375) internal successors, (2743), 16 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:11,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 442.0) internal successors, (7514), 17 states have internal predecessors, (7514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:11,222 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 442.0) internal successors, (7514), 17 states have internal predecessors, (7514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:11,222 INFO L175 Difference]: Start difference. First operand has 111 places, 96 transitions, 1060 flow. Second operand 16 states and 2743 transitions. [2023-11-06 22:30:11,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 150 transitions, 1625 flow [2023-11-06 22:30:11,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 150 transitions, 1545 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-11-06 22:30:11,250 INFO L231 Difference]: Finished difference. Result has 118 places, 102 transitions, 1198 flow [2023-11-06 22:30:11,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1198, PETRI_PLACES=118, PETRI_TRANSITIONS=102} [2023-11-06 22:30:11,251 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2023-11-06 22:30:11,252 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 102 transitions, 1198 flow [2023-11-06 22:30:11,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 166.58333333333334) internal successors, (1999), 12 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:11,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:11,253 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:11,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:30:11,253 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:11,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash -671493072, now seen corresponding path program 17 times [2023-11-06 22:30:11,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:11,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425238702] [2023-11-06 22:30:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:11,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:11,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:11,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425238702] [2023-11-06 22:30:11,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425238702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:11,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:11,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:30:11,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360566961] [2023-11-06 22:30:11,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:11,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:30:11,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:11,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:30:11,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:30:12,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 442 [2023-11-06 22:30:12,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 102 transitions, 1198 flow. Second operand has 12 states, 12 states have (on average 167.58333333333334) internal successors, (2011), 12 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:12,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:12,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 442 [2023-11-06 22:30:12,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:13,480 INFO L124 PetriNetUnfolderBase]: 337/643 cut-off events. [2023-11-06 22:30:13,480 INFO L125 PetriNetUnfolderBase]: For 3763/3765 co-relation queries the response was YES. [2023-11-06 22:30:13,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3578 conditions, 643 events. 337/643 cut-off events. For 3763/3765 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2879 event pairs, 36 based on Foata normal form. 1/644 useless extension candidates. Maximal degree in co-relation 3512. Up to 207 conditions per place. [2023-11-06 22:30:13,494 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 80 selfloop transitions, 55 changer transitions 7/143 dead transitions. [2023-11-06 22:30:13,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 143 transitions, 1668 flow [2023-11-06 22:30:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:30:13,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:30:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2416 transitions. [2023-11-06 22:30:13,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39043309631544926 [2023-11-06 22:30:13,500 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2416 transitions. [2023-11-06 22:30:13,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2416 transitions. [2023-11-06 22:30:13,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:13,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2416 transitions. [2023-11-06 22:30:13,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 172.57142857142858) internal successors, (2416), 14 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:13,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 442.0) internal successors, (6630), 15 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:13,515 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 442.0) internal successors, (6630), 15 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:13,515 INFO L175 Difference]: Start difference. First operand has 118 places, 102 transitions, 1198 flow. Second operand 14 states and 2416 transitions. [2023-11-06 22:30:13,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 143 transitions, 1668 flow [2023-11-06 22:30:13,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 143 transitions, 1570 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-11-06 22:30:13,545 INFO L231 Difference]: Finished difference. Result has 122 places, 101 transitions, 1206 flow [2023-11-06 22:30:13,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1206, PETRI_PLACES=122, PETRI_TRANSITIONS=101} [2023-11-06 22:30:13,546 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 96 predicate places. [2023-11-06 22:30:13,546 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 101 transitions, 1206 flow [2023-11-06 22:30:13,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 167.58333333333334) internal successors, (2011), 12 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:13,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:13,547 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:13,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:30:13,549 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:13,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:13,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1617206036, now seen corresponding path program 18 times [2023-11-06 22:30:13,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:13,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263776027] [2023-11-06 22:30:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:13,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:14,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:14,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263776027] [2023-11-06 22:30:14,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263776027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:14,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:14,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:30:14,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965525149] [2023-11-06 22:30:14,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:14,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:30:14,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:14,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:30:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:30:15,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 442 [2023-11-06 22:30:15,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 101 transitions, 1206 flow. Second operand has 12 states, 12 states have (on average 166.58333333333334) internal successors, (1999), 12 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:15,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:15,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 442 [2023-11-06 22:30:15,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:15,675 INFO L124 PetriNetUnfolderBase]: 335/633 cut-off events. [2023-11-06 22:30:15,675 INFO L125 PetriNetUnfolderBase]: For 3728/3730 co-relation queries the response was YES. [2023-11-06 22:30:15,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3571 conditions, 633 events. 335/633 cut-off events. For 3728/3730 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2798 event pairs, 36 based on Foata normal form. 1/634 useless extension candidates. Maximal degree in co-relation 3508. Up to 197 conditions per place. [2023-11-06 22:30:15,685 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 79 selfloop transitions, 53 changer transitions 9/142 dead transitions. [2023-11-06 22:30:15,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 142 transitions, 1665 flow [2023-11-06 22:30:15,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:30:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:30:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2568 transitions. [2023-11-06 22:30:15,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38733031674208146 [2023-11-06 22:30:15,692 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2568 transitions. [2023-11-06 22:30:15,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2568 transitions. [2023-11-06 22:30:15,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:15,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2568 transitions. [2023-11-06 22:30:15,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 171.2) internal successors, (2568), 15 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:15,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:15,708 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:15,708 INFO L175 Difference]: Start difference. First operand has 122 places, 101 transitions, 1206 flow. Second operand 15 states and 2568 transitions. [2023-11-06 22:30:15,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 142 transitions, 1665 flow [2023-11-06 22:30:15,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 142 transitions, 1549 flow, removed 3 selfloop flow, removed 13 redundant places. [2023-11-06 22:30:15,739 INFO L231 Difference]: Finished difference. Result has 122 places, 98 transitions, 1160 flow [2023-11-06 22:30:15,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1160, PETRI_PLACES=122, PETRI_TRANSITIONS=98} [2023-11-06 22:30:15,739 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 96 predicate places. [2023-11-06 22:30:15,740 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 98 transitions, 1160 flow [2023-11-06 22:30:15,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 166.58333333333334) internal successors, (1999), 12 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:15,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:15,741 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:15,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:30:15,741 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:15,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:15,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1103228494, now seen corresponding path program 19 times [2023-11-06 22:30:15,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:15,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749054276] [2023-11-06 22:30:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:15,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:16,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:16,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749054276] [2023-11-06 22:30:16,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749054276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:16,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:16,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:30:16,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429212220] [2023-11-06 22:30:16,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:16,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:30:16,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:16,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:30:16,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:30:17,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 442 [2023-11-06 22:30:17,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 98 transitions, 1160 flow. Second operand has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:17,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:17,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 442 [2023-11-06 22:30:17,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:17,768 INFO L124 PetriNetUnfolderBase]: 430/799 cut-off events. [2023-11-06 22:30:17,768 INFO L125 PetriNetUnfolderBase]: For 5150/5152 co-relation queries the response was YES. [2023-11-06 22:30:17,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4452 conditions, 799 events. 430/799 cut-off events. For 5150/5152 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3655 event pairs, 59 based on Foata normal form. 7/805 useless extension candidates. Maximal degree in co-relation 4399. Up to 263 conditions per place. [2023-11-06 22:30:17,787 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 122 selfloop transitions, 52 changer transitions 6/181 dead transitions. [2023-11-06 22:30:17,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 181 transitions, 2140 flow [2023-11-06 22:30:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:30:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:30:17,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2647 transitions. [2023-11-06 22:30:17,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3992458521870287 [2023-11-06 22:30:17,793 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2647 transitions. [2023-11-06 22:30:17,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2647 transitions. [2023-11-06 22:30:17,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:17,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2647 transitions. [2023-11-06 22:30:17,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 176.46666666666667) internal successors, (2647), 15 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:17,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:17,807 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:17,808 INFO L175 Difference]: Start difference. First operand has 122 places, 98 transitions, 1160 flow. Second operand 15 states and 2647 transitions. [2023-11-06 22:30:17,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 181 transitions, 2140 flow [2023-11-06 22:30:17,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 181 transitions, 1955 flow, removed 6 selfloop flow, removed 15 redundant places. [2023-11-06 22:30:17,841 INFO L231 Difference]: Finished difference. Result has 124 places, 122 transitions, 1544 flow [2023-11-06 22:30:17,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1544, PETRI_PLACES=124, PETRI_TRANSITIONS=122} [2023-11-06 22:30:17,843 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 98 predicate places. [2023-11-06 22:30:17,843 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 122 transitions, 1544 flow [2023-11-06 22:30:17,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:17,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:17,844 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:17,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:30:17,845 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:17,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1083295066, now seen corresponding path program 20 times [2023-11-06 22:30:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:17,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117701976] [2023-11-06 22:30:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:18,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:18,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117701976] [2023-11-06 22:30:18,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117701976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:18,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:18,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:30:18,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28441808] [2023-11-06 22:30:18,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:18,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:30:18,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:18,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:30:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:30:18,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 442 [2023-11-06 22:30:18,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 122 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:18,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:18,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 442 [2023-11-06 22:30:18,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:19,662 INFO L124 PetriNetUnfolderBase]: 426/795 cut-off events. [2023-11-06 22:30:19,662 INFO L125 PetriNetUnfolderBase]: For 5781/5783 co-relation queries the response was YES. [2023-11-06 22:30:19,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4587 conditions, 795 events. 426/795 cut-off events. For 5781/5783 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3625 event pairs, 59 based on Foata normal form. 1/795 useless extension candidates. Maximal degree in co-relation 4510. Up to 263 conditions per place. [2023-11-06 22:30:19,671 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 121 selfloop transitions, 49 changer transitions 9/180 dead transitions. [2023-11-06 22:30:19,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 180 transitions, 2141 flow [2023-11-06 22:30:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:30:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:30:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2644 transitions. [2023-11-06 22:30:19,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987933634992459 [2023-11-06 22:30:19,677 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2644 transitions. [2023-11-06 22:30:19,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2644 transitions. [2023-11-06 22:30:19,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:19,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2644 transitions. [2023-11-06 22:30:19,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 176.26666666666668) internal successors, (2644), 15 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:19,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:19,690 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:19,691 INFO L175 Difference]: Start difference. First operand has 124 places, 122 transitions, 1544 flow. Second operand 15 states and 2644 transitions. [2023-11-06 22:30:19,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 180 transitions, 2141 flow [2023-11-06 22:30:19,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 180 transitions, 2034 flow, removed 51 selfloop flow, removed 5 redundant places. [2023-11-06 22:30:19,744 INFO L231 Difference]: Finished difference. Result has 134 places, 120 transitions, 1511 flow [2023-11-06 22:30:19,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1511, PETRI_PLACES=134, PETRI_TRANSITIONS=120} [2023-11-06 22:30:19,745 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 108 predicate places. [2023-11-06 22:30:19,745 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 120 transitions, 1511 flow [2023-11-06 22:30:19,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:19,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:19,746 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:19,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:30:19,746 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:19,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:19,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1208810316, now seen corresponding path program 21 times [2023-11-06 22:30:19,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:19,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627138099] [2023-11-06 22:30:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:19,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:20,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:20,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627138099] [2023-11-06 22:30:20,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627138099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:20,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:20,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:30:20,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485916292] [2023-11-06 22:30:20,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:20,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:30:20,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:30:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:30:20,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 442 [2023-11-06 22:30:20,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 120 transitions, 1511 flow. Second operand has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:20,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:20,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 442 [2023-11-06 22:30:20,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:21,748 INFO L124 PetriNetUnfolderBase]: 473/870 cut-off events. [2023-11-06 22:30:21,748 INFO L125 PetriNetUnfolderBase]: For 5381/5383 co-relation queries the response was YES. [2023-11-06 22:30:21,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4859 conditions, 870 events. 473/870 cut-off events. For 5381/5383 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4043 event pairs, 30 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 4780. Up to 215 conditions per place. [2023-11-06 22:30:21,757 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 146 selfloop transitions, 64 changer transitions 11/222 dead transitions. [2023-11-06 22:30:21,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 222 transitions, 2674 flow [2023-11-06 22:30:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:30:21,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:30:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3339 transitions. [2023-11-06 22:30:21,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397594665396523 [2023-11-06 22:30:21,774 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3339 transitions. [2023-11-06 22:30:21,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3339 transitions. [2023-11-06 22:30:21,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:21,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3339 transitions. [2023-11-06 22:30:21,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 175.73684210526315) internal successors, (3339), 19 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:21,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 442.0) internal successors, (8840), 20 states have internal predecessors, (8840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:21,831 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 442.0) internal successors, (8840), 20 states have internal predecessors, (8840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:21,831 INFO L175 Difference]: Start difference. First operand has 134 places, 120 transitions, 1511 flow. Second operand 19 states and 3339 transitions. [2023-11-06 22:30:21,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 222 transitions, 2674 flow [2023-11-06 22:30:21,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 222 transitions, 2542 flow, removed 5 selfloop flow, removed 12 redundant places. [2023-11-06 22:30:21,876 INFO L231 Difference]: Finished difference. Result has 144 places, 138 transitions, 1858 flow [2023-11-06 22:30:21,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1858, PETRI_PLACES=144, PETRI_TRANSITIONS=138} [2023-11-06 22:30:21,877 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 118 predicate places. [2023-11-06 22:30:21,877 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 138 transitions, 1858 flow [2023-11-06 22:30:21,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 170.72727272727272) internal successors, (1878), 11 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:21,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:21,878 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:21,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:30:21,879 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:21,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash 217284784, now seen corresponding path program 22 times [2023-11-06 22:30:21,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:21,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213130944] [2023-11-06 22:30:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:22,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:22,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213130944] [2023-11-06 22:30:22,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213130944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:22,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:22,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:30:22,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031660939] [2023-11-06 22:30:22,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:22,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:30:22,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:22,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:30:22,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:30:22,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 442 [2023-11-06 22:30:22,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 138 transitions, 1858 flow. Second operand has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 11 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:22,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:22,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 442 [2023-11-06 22:30:22,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:23,657 INFO L124 PetriNetUnfolderBase]: 494/896 cut-off events. [2023-11-06 22:30:23,658 INFO L125 PetriNetUnfolderBase]: For 6140/6142 co-relation queries the response was YES. [2023-11-06 22:30:23,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5189 conditions, 896 events. 494/896 cut-off events. For 6140/6142 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4147 event pairs, 58 based on Foata normal form. 1/896 useless extension candidates. Maximal degree in co-relation 5104. Up to 294 conditions per place. [2023-11-06 22:30:23,669 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 132 selfloop transitions, 68 changer transitions 7/208 dead transitions. [2023-11-06 22:30:23,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 208 transitions, 2677 flow [2023-11-06 22:30:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:30:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 22:30:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3008 transitions. [2023-11-06 22:30:23,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4003194037796114 [2023-11-06 22:30:23,676 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3008 transitions. [2023-11-06 22:30:23,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3008 transitions. [2023-11-06 22:30:23,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:23,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3008 transitions. [2023-11-06 22:30:23,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 176.94117647058823) internal successors, (3008), 17 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:23,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 442.0) internal successors, (7956), 18 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:23,690 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 442.0) internal successors, (7956), 18 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:23,691 INFO L175 Difference]: Start difference. First operand has 144 places, 138 transitions, 1858 flow. Second operand 17 states and 3008 transitions. [2023-11-06 22:30:23,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 208 transitions, 2677 flow [2023-11-06 22:30:23,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 208 transitions, 2573 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-11-06 22:30:23,753 INFO L231 Difference]: Finished difference. Result has 158 places, 148 transitions, 2095 flow [2023-11-06 22:30:23,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2095, PETRI_PLACES=158, PETRI_TRANSITIONS=148} [2023-11-06 22:30:23,755 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 132 predicate places. [2023-11-06 22:30:23,755 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 148 transitions, 2095 flow [2023-11-06 22:30:23,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 11 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:23,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:23,756 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:23,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 22:30:23,756 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:23,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash -575378334, now seen corresponding path program 23 times [2023-11-06 22:30:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:23,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046995859] [2023-11-06 22:30:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:23,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:24,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:24,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046995859] [2023-11-06 22:30:24,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046995859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:24,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:24,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:30:24,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184265933] [2023-11-06 22:30:24,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:24,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:30:24,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:24,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:30:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:30:24,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 442 [2023-11-06 22:30:24,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 148 transitions, 2095 flow. Second operand has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 11 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:24,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:24,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 442 [2023-11-06 22:30:24,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:25,542 INFO L124 PetriNetUnfolderBase]: 493/893 cut-off events. [2023-11-06 22:30:25,542 INFO L125 PetriNetUnfolderBase]: For 6546/6548 co-relation queries the response was YES. [2023-11-06 22:30:25,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 893 events. 493/893 cut-off events. For 6546/6548 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4096 event pairs, 63 based on Foata normal form. 1/893 useless extension candidates. Maximal degree in co-relation 5430. Up to 303 conditions per place. [2023-11-06 22:30:25,554 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 135 selfloop transitions, 60 changer transitions 7/203 dead transitions. [2023-11-06 22:30:25,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 203 transitions, 2756 flow [2023-11-06 22:30:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:30:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:30:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2319 transitions. [2023-11-06 22:30:25,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035851026801253 [2023-11-06 22:30:25,559 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2319 transitions. [2023-11-06 22:30:25,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2319 transitions. [2023-11-06 22:30:25,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:25,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2319 transitions. [2023-11-06 22:30:25,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 178.3846153846154) internal successors, (2319), 13 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:25,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 442.0) internal successors, (6188), 14 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:25,570 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 442.0) internal successors, (6188), 14 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:25,570 INFO L175 Difference]: Start difference. First operand has 158 places, 148 transitions, 2095 flow. Second operand 13 states and 2319 transitions. [2023-11-06 22:30:25,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 203 transitions, 2756 flow [2023-11-06 22:30:25,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 203 transitions, 2657 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-11-06 22:30:25,632 INFO L231 Difference]: Finished difference. Result has 160 places, 147 transitions, 2113 flow [2023-11-06 22:30:25,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2113, PETRI_PLACES=160, PETRI_TRANSITIONS=147} [2023-11-06 22:30:25,633 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 134 predicate places. [2023-11-06 22:30:25,633 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 147 transitions, 2113 flow [2023-11-06 22:30:25,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 171.72727272727272) internal successors, (1889), 11 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:25,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:25,634 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:25,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-06 22:30:25,634 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:25,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash -661325114, now seen corresponding path program 1 times [2023-11-06 22:30:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:25,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410745154] [2023-11-06 22:30:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:25,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:26,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:26,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410745154] [2023-11-06 22:30:26,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410745154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:26,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:26,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:30:26,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093248179] [2023-11-06 22:30:26,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:26,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:30:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:30:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:30:26,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 442 [2023-11-06 22:30:26,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 147 transitions, 2113 flow. Second operand has 9 states, 9 states have (on average 180.22222222222223) internal successors, (1622), 9 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:26,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:26,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 442 [2023-11-06 22:30:26,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:26,739 INFO L124 PetriNetUnfolderBase]: 513/937 cut-off events. [2023-11-06 22:30:26,739 INFO L125 PetriNetUnfolderBase]: For 7170/7170 co-relation queries the response was YES. [2023-11-06 22:30:26,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5781 conditions, 937 events. 513/937 cut-off events. For 7170/7170 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4470 event pairs, 106 based on Foata normal form. 4/941 useless extension candidates. Maximal degree in co-relation 5698. Up to 426 conditions per place. [2023-11-06 22:30:26,748 INFO L140 encePairwiseOnDemand]: 431/442 looper letters, 127 selfloop transitions, 60 changer transitions 0/188 dead transitions. [2023-11-06 22:30:26,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 188 transitions, 2884 flow [2023-11-06 22:30:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:30:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:30:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1851 transitions. [2023-11-06 22:30:26,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41877828054298644 [2023-11-06 22:30:26,757 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1851 transitions. [2023-11-06 22:30:26,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1851 transitions. [2023-11-06 22:30:26,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:26,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1851 transitions. [2023-11-06 22:30:26,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 185.1) internal successors, (1851), 10 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:26,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:26,765 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:26,766 INFO L175 Difference]: Start difference. First operand has 160 places, 147 transitions, 2113 flow. Second operand 10 states and 1851 transitions. [2023-11-06 22:30:26,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 188 transitions, 2884 flow [2023-11-06 22:30:26,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 188 transitions, 2732 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-11-06 22:30:26,827 INFO L231 Difference]: Finished difference. Result has 154 places, 158 transitions, 2225 flow [2023-11-06 22:30:26,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2225, PETRI_PLACES=154, PETRI_TRANSITIONS=158} [2023-11-06 22:30:26,834 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 128 predicate places. [2023-11-06 22:30:26,834 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 158 transitions, 2225 flow [2023-11-06 22:30:26,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 180.22222222222223) internal successors, (1622), 9 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:26,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:26,835 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:26,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 22:30:26,835 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:26,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:26,836 INFO L85 PathProgramCache]: Analyzing trace with hash -940124954, now seen corresponding path program 2 times [2023-11-06 22:30:26,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:26,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562002529] [2023-11-06 22:30:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:26,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:30:27,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:27,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562002529] [2023-11-06 22:30:27,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562002529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:27,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406788755] [2023-11-06 22:30:27,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:30:27,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:27,793 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:27,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:30:27,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:30:27,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:30:27,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:30:27,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:28,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:28,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406788755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:28,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:30:28,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 18 [2023-11-06 22:30:28,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785346844] [2023-11-06 22:30:28,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:28,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:30:28,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:28,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:30:28,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:30:28,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 442 [2023-11-06 22:30:28,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 158 transitions, 2225 flow. Second operand has 9 states, 9 states have (on average 180.22222222222223) internal successors, (1622), 9 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:28,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:28,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 442 [2023-11-06 22:30:28,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:28,986 INFO L124 PetriNetUnfolderBase]: 519/943 cut-off events. [2023-11-06 22:30:28,986 INFO L125 PetriNetUnfolderBase]: For 6733/6733 co-relation queries the response was YES. [2023-11-06 22:30:28,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5792 conditions, 943 events. 519/943 cut-off events. For 6733/6733 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4481 event pairs, 96 based on Foata normal form. 4/947 useless extension candidates. Maximal degree in co-relation 5686. Up to 424 conditions per place. [2023-11-06 22:30:28,995 INFO L140 encePairwiseOnDemand]: 431/442 looper letters, 131 selfloop transitions, 60 changer transitions 0/192 dead transitions. [2023-11-06 22:30:28,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 192 transitions, 2900 flow [2023-11-06 22:30:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:30:29,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:30:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1853 transitions. [2023-11-06 22:30:29,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41923076923076924 [2023-11-06 22:30:29,005 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1853 transitions. [2023-11-06 22:30:29,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1853 transitions. [2023-11-06 22:30:29,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:29,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1853 transitions. [2023-11-06 22:30:29,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 185.3) internal successors, (1853), 10 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:29,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:29,013 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:29,014 INFO L175 Difference]: Start difference. First operand has 154 places, 158 transitions, 2225 flow. Second operand 10 states and 1853 transitions. [2023-11-06 22:30:29,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 192 transitions, 2900 flow [2023-11-06 22:30:29,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 192 transitions, 2869 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-06 22:30:29,076 INFO L231 Difference]: Finished difference. Result has 162 places, 164 transitions, 2411 flow [2023-11-06 22:30:29,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=2198, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2411, PETRI_PLACES=162, PETRI_TRANSITIONS=164} [2023-11-06 22:30:29,079 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 136 predicate places. [2023-11-06 22:30:29,080 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 164 transitions, 2411 flow [2023-11-06 22:30:29,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 180.22222222222223) internal successors, (1622), 9 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:29,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:29,080 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:29,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:29,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 22:30:29,287 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:29,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash 205060416, now seen corresponding path program 3 times [2023-11-06 22:30:29,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:29,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958473770] [2023-11-06 22:30:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:29,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:29,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:29,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958473770] [2023-11-06 22:30:29,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958473770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:29,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:29,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:30:29,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38492293] [2023-11-06 22:30:29,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:29,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:30:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:30:29,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:30:29,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 442 [2023-11-06 22:30:29,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 164 transitions, 2411 flow. Second operand has 9 states, 9 states have (on average 180.22222222222223) internal successors, (1622), 9 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:29,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:29,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 442 [2023-11-06 22:30:29,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:30,517 INFO L124 PetriNetUnfolderBase]: 503/909 cut-off events. [2023-11-06 22:30:30,517 INFO L125 PetriNetUnfolderBase]: For 6983/6983 co-relation queries the response was YES. [2023-11-06 22:30:30,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5746 conditions, 909 events. 503/909 cut-off events. For 6983/6983 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4217 event pairs, 88 based on Foata normal form. 4/913 useless extension candidates. Maximal degree in co-relation 5639. Up to 278 conditions per place. [2023-11-06 22:30:30,526 INFO L140 encePairwiseOnDemand]: 431/442 looper letters, 145 selfloop transitions, 66 changer transitions 1/213 dead transitions. [2023-11-06 22:30:30,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 213 transitions, 3304 flow [2023-11-06 22:30:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:30:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:30:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1862 transitions. [2023-11-06 22:30:30,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42126696832579186 [2023-11-06 22:30:30,533 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1862 transitions. [2023-11-06 22:30:30,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1862 transitions. [2023-11-06 22:30:30,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:30,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1862 transitions. [2023-11-06 22:30:30,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 186.2) internal successors, (1862), 10 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:30,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:30,541 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:30,541 INFO L175 Difference]: Start difference. First operand has 162 places, 164 transitions, 2411 flow. Second operand 10 states and 1862 transitions. [2023-11-06 22:30:30,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 213 transitions, 3304 flow [2023-11-06 22:30:30,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 213 transitions, 3272 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-06 22:30:30,606 INFO L231 Difference]: Finished difference. Result has 170 places, 170 transitions, 2657 flow [2023-11-06 22:30:30,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2657, PETRI_PLACES=170, PETRI_TRANSITIONS=170} [2023-11-06 22:30:30,607 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 144 predicate places. [2023-11-06 22:30:30,607 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 170 transitions, 2657 flow [2023-11-06 22:30:30,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 180.22222222222223) internal successors, (1622), 9 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:30,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:30,608 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:30,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-06 22:30:30,608 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:30,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:30,609 INFO L85 PathProgramCache]: Analyzing trace with hash -877799692, now seen corresponding path program 4 times [2023-11-06 22:30:30,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:30,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752792768] [2023-11-06 22:30:30,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:30,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:31,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:31,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752792768] [2023-11-06 22:30:31,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752792768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:31,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:31,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:30:31,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844900762] [2023-11-06 22:30:31,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:31,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:30:31,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:31,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:30:31,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:30:31,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 442 [2023-11-06 22:30:31,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 170 transitions, 2657 flow. Second operand has 9 states, 9 states have (on average 176.22222222222223) internal successors, (1586), 9 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:31,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:31,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 442 [2023-11-06 22:30:31,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:31,766 INFO L124 PetriNetUnfolderBase]: 487/879 cut-off events. [2023-11-06 22:30:31,766 INFO L125 PetriNetUnfolderBase]: For 8043/8045 co-relation queries the response was YES. [2023-11-06 22:30:31,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5788 conditions, 879 events. 487/879 cut-off events. For 8043/8045 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4033 event pairs, 86 based on Foata normal form. 6/885 useless extension candidates. Maximal degree in co-relation 5679. Up to 332 conditions per place. [2023-11-06 22:30:31,774 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 111 selfloop transitions, 77 changer transitions 1/190 dead transitions. [2023-11-06 22:30:31,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 190 transitions, 3179 flow [2023-11-06 22:30:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:30:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:30:31,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1804 transitions. [2023-11-06 22:30:31,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081447963800905 [2023-11-06 22:30:31,780 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1804 transitions. [2023-11-06 22:30:31,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1804 transitions. [2023-11-06 22:30:31,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:31,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1804 transitions. [2023-11-06 22:30:31,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 180.4) internal successors, (1804), 10 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:31,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:31,788 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 442.0) internal successors, (4862), 11 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:31,788 INFO L175 Difference]: Start difference. First operand has 170 places, 170 transitions, 2657 flow. Second operand 10 states and 1804 transitions. [2023-11-06 22:30:31,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 190 transitions, 3179 flow [2023-11-06 22:30:31,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 190 transitions, 3071 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-06 22:30:31,860 INFO L231 Difference]: Finished difference. Result has 171 places, 166 transitions, 2648 flow [2023-11-06 22:30:31,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=2493, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2648, PETRI_PLACES=171, PETRI_TRANSITIONS=166} [2023-11-06 22:30:31,861 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 145 predicate places. [2023-11-06 22:30:31,861 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 166 transitions, 2648 flow [2023-11-06 22:30:31,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 176.22222222222223) internal successors, (1586), 9 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:31,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:31,861 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:31,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-06 22:30:31,862 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:31,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:31,862 INFO L85 PathProgramCache]: Analyzing trace with hash 2049695438, now seen corresponding path program 5 times [2023-11-06 22:30:31,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:31,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144127772] [2023-11-06 22:30:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:31,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:32,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:32,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144127772] [2023-11-06 22:30:32,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144127772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:32,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:32,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:30:32,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908268165] [2023-11-06 22:30:32,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:32,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:30:32,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:32,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:30:32,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:30:32,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 442 [2023-11-06 22:30:32,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 166 transitions, 2648 flow. Second operand has 9 states, 9 states have (on average 180.22222222222223) internal successors, (1622), 9 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:32,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:32,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 442 [2023-11-06 22:30:32,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:32,991 INFO L124 PetriNetUnfolderBase]: 479/887 cut-off events. [2023-11-06 22:30:32,991 INFO L125 PetriNetUnfolderBase]: For 9212/9216 co-relation queries the response was YES. [2023-11-06 22:30:32,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5869 conditions, 887 events. 479/887 cut-off events. For 9212/9216 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4195 event pairs, 101 based on Foata normal form. 5/891 useless extension candidates. Maximal degree in co-relation 5760. Up to 450 conditions per place. [2023-11-06 22:30:32,998 INFO L140 encePairwiseOnDemand]: 432/442 looper letters, 158 selfloop transitions, 46 changer transitions 1/206 dead transitions. [2023-11-06 22:30:32,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 206 transitions, 3398 flow [2023-11-06 22:30:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:30:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:30:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1674 transitions. [2023-11-06 22:30:33,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42081447963800905 [2023-11-06 22:30:33,010 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1674 transitions. [2023-11-06 22:30:33,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1674 transitions. [2023-11-06 22:30:33,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:33,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1674 transitions. [2023-11-06 22:30:33,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:33,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 442.0) internal successors, (4420), 10 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:33,019 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 442.0) internal successors, (4420), 10 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:33,019 INFO L175 Difference]: Start difference. First operand has 171 places, 166 transitions, 2648 flow. Second operand 9 states and 1674 transitions. [2023-11-06 22:30:33,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 206 transitions, 3398 flow [2023-11-06 22:30:33,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 206 transitions, 3286 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-06 22:30:33,088 INFO L231 Difference]: Finished difference. Result has 174 places, 168 transitions, 2734 flow [2023-11-06 22:30:33,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=2494, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2734, PETRI_PLACES=174, PETRI_TRANSITIONS=168} [2023-11-06 22:30:33,090 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 148 predicate places. [2023-11-06 22:30:33,090 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 168 transitions, 2734 flow [2023-11-06 22:30:33,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 180.22222222222223) internal successors, (1622), 9 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:33,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:33,091 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:33,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-06 22:30:33,091 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:33,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash 39543032, now seen corresponding path program 6 times [2023-11-06 22:30:33,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:33,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71584861] [2023-11-06 22:30:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:33,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:33,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:33,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71584861] [2023-11-06 22:30:33,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71584861] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:33,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177538171] [2023-11-06 22:30:33,460 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:30:33,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:33,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:33,462 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:33,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:30:33,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-06 22:30:33,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:30:33,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:30:33,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:33,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:33,863 INFO L322 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2023-11-06 22:30:33,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 49 [2023-11-06 22:30:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:33,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177538171] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:30:33,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:30:33,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 13 [2023-11-06 22:30:33,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344991400] [2023-11-06 22:30:33,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:30:33,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:30:33,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:33,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:30:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:30:34,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 442 [2023-11-06 22:30:34,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 168 transitions, 2734 flow. Second operand has 13 states, 13 states have (on average 180.69230769230768) internal successors, (2349), 13 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:34,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:34,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 442 [2023-11-06 22:30:34,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:35,027 INFO L124 PetriNetUnfolderBase]: 477/885 cut-off events. [2023-11-06 22:30:35,027 INFO L125 PetriNetUnfolderBase]: For 9587/9591 co-relation queries the response was YES. [2023-11-06 22:30:35,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5846 conditions, 885 events. 477/885 cut-off events. For 9587/9591 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4165 event pairs, 23 based on Foata normal form. 8/893 useless extension candidates. Maximal degree in co-relation 5737. Up to 303 conditions per place. [2023-11-06 22:30:35,034 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 136 selfloop transitions, 79 changer transitions 0/216 dead transitions. [2023-11-06 22:30:35,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 216 transitions, 3508 flow [2023-11-06 22:30:35,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:30:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:30:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2216 transitions. [2023-11-06 22:30:35,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177978883861237 [2023-11-06 22:30:35,038 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2216 transitions. [2023-11-06 22:30:35,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2216 transitions. [2023-11-06 22:30:35,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:35,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2216 transitions. [2023-11-06 22:30:35,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 184.66666666666666) internal successors, (2216), 12 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:35,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 442.0) internal successors, (5746), 13 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:35,048 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 442.0) internal successors, (5746), 13 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:35,048 INFO L175 Difference]: Start difference. First operand has 174 places, 168 transitions, 2734 flow. Second operand 12 states and 2216 transitions. [2023-11-06 22:30:35,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 216 transitions, 3508 flow [2023-11-06 22:30:35,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 216 transitions, 3326 flow, removed 19 selfloop flow, removed 10 redundant places. [2023-11-06 22:30:35,121 INFO L231 Difference]: Finished difference. Result has 178 places, 174 transitions, 2835 flow [2023-11-06 22:30:35,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=2505, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2835, PETRI_PLACES=178, PETRI_TRANSITIONS=174} [2023-11-06 22:30:35,122 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 152 predicate places. [2023-11-06 22:30:35,123 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 174 transitions, 2835 flow [2023-11-06 22:30:35,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 180.69230769230768) internal successors, (2349), 13 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:35,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:35,123 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:35,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:35,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:35,330 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:35,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:35,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1597150818, now seen corresponding path program 7 times [2023-11-06 22:30:35,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:35,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171605914] [2023-11-06 22:30:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:35,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:35,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171605914] [2023-11-06 22:30:35,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171605914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:35,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:35,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:30:35,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912052786] [2023-11-06 22:30:35,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:35,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:30:35,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:35,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:30:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:30:36,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 442 [2023-11-06 22:30:36,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 174 transitions, 2835 flow. Second operand has 9 states, 9 states have (on average 180.22222222222223) internal successors, (1622), 9 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:36,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:36,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 442 [2023-11-06 22:30:36,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:36,450 INFO L124 PetriNetUnfolderBase]: 462/854 cut-off events. [2023-11-06 22:30:36,450 INFO L125 PetriNetUnfolderBase]: For 10132/10132 co-relation queries the response was YES. [2023-11-06 22:30:36,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5689 conditions, 854 events. 462/854 cut-off events. For 10132/10132 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4014 event pairs, 108 based on Foata normal form. 4/858 useless extension candidates. Maximal degree in co-relation 5581. Up to 499 conditions per place. [2023-11-06 22:30:36,458 INFO L140 encePairwiseOnDemand]: 432/442 looper letters, 144 selfloop transitions, 45 changer transitions 0/190 dead transitions. [2023-11-06 22:30:36,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 190 transitions, 3240 flow [2023-11-06 22:30:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:30:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:30:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1665 transitions. [2023-11-06 22:30:36,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41855203619909503 [2023-11-06 22:30:36,462 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1665 transitions. [2023-11-06 22:30:36,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1665 transitions. [2023-11-06 22:30:36,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:36,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1665 transitions. [2023-11-06 22:30:36,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:36,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 442.0) internal successors, (4420), 10 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:36,469 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 442.0) internal successors, (4420), 10 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:36,475 INFO L175 Difference]: Start difference. First operand has 178 places, 174 transitions, 2835 flow. Second operand 9 states and 1665 transitions. [2023-11-06 22:30:36,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 190 transitions, 3240 flow [2023-11-06 22:30:36,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 190 transitions, 3048 flow, removed 29 selfloop flow, removed 16 redundant places. [2023-11-06 22:30:36,548 INFO L231 Difference]: Finished difference. Result has 163 places, 169 transitions, 2678 flow [2023-11-06 22:30:36,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2678, PETRI_PLACES=163, PETRI_TRANSITIONS=169} [2023-11-06 22:30:36,550 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 137 predicate places. [2023-11-06 22:30:36,551 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 169 transitions, 2678 flow [2023-11-06 22:30:36,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 180.22222222222223) internal successors, (1622), 9 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:36,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:36,551 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:36,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-06 22:30:36,552 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:36,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:36,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1980769664, now seen corresponding path program 1 times [2023-11-06 22:30:36,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:36,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457182875] [2023-11-06 22:30:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:36,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:37,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457182875] [2023-11-06 22:30:37,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457182875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:37,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:37,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:30:37,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281310685] [2023-11-06 22:30:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:37,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:30:37,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:37,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:30:37,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:30:38,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 442 [2023-11-06 22:30:38,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 169 transitions, 2678 flow. Second operand has 13 states, 13 states have (on average 168.6153846153846) internal successors, (2192), 13 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:38,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:38,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 442 [2023-11-06 22:30:38,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:39,180 INFO L124 PetriNetUnfolderBase]: 779/1372 cut-off events. [2023-11-06 22:30:39,180 INFO L125 PetriNetUnfolderBase]: For 11465/11465 co-relation queries the response was YES. [2023-11-06 22:30:39,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8356 conditions, 1372 events. 779/1372 cut-off events. For 11465/11465 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6765 event pairs, 75 based on Foata normal form. 1/1373 useless extension candidates. Maximal degree in co-relation 8260. Up to 217 conditions per place. [2023-11-06 22:30:39,191 INFO L140 encePairwiseOnDemand]: 427/442 looper letters, 194 selfloop transitions, 152 changer transitions 5/351 dead transitions. [2023-11-06 22:30:39,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 351 transitions, 4911 flow [2023-11-06 22:30:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 22:30:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-06 22:30:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4362 transitions. [2023-11-06 22:30:39,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39475113122171945 [2023-11-06 22:30:39,198 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4362 transitions. [2023-11-06 22:30:39,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4362 transitions. [2023-11-06 22:30:39,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:39,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4362 transitions. [2023-11-06 22:30:39,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 174.48) internal successors, (4362), 25 states have internal predecessors, (4362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:39,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 442.0) internal successors, (11492), 26 states have internal predecessors, (11492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:39,217 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 442.0) internal successors, (11492), 26 states have internal predecessors, (11492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:39,217 INFO L175 Difference]: Start difference. First operand has 163 places, 169 transitions, 2678 flow. Second operand 25 states and 4362 transitions. [2023-11-06 22:30:39,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 351 transitions, 4911 flow [2023-11-06 22:30:39,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 351 transitions, 4779 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-06 22:30:39,306 INFO L231 Difference]: Finished difference. Result has 192 places, 237 transitions, 3988 flow [2023-11-06 22:30:39,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3988, PETRI_PLACES=192, PETRI_TRANSITIONS=237} [2023-11-06 22:30:39,307 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 166 predicate places. [2023-11-06 22:30:39,307 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 237 transitions, 3988 flow [2023-11-06 22:30:39,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 168.6153846153846) internal successors, (2192), 13 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:39,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:39,308 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:39,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-06 22:30:39,308 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:39,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:39,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1983512174, now seen corresponding path program 2 times [2023-11-06 22:30:39,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:39,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781465830] [2023-11-06 22:30:39,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:39,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:40,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781465830] [2023-11-06 22:30:40,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781465830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:40,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:40,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:30:40,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320111222] [2023-11-06 22:30:40,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:40,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:30:40,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:40,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:30:40,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:30:40,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 442 [2023-11-06 22:30:40,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 237 transitions, 3988 flow. Second operand has 12 states, 12 states have (on average 166.75) internal successors, (2001), 12 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:40,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:40,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 442 [2023-11-06 22:30:40,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:41,863 INFO L124 PetriNetUnfolderBase]: 956/1700 cut-off events. [2023-11-06 22:30:41,863 INFO L125 PetriNetUnfolderBase]: For 16047/16047 co-relation queries the response was YES. [2023-11-06 22:30:41,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10935 conditions, 1700 events. 956/1700 cut-off events. For 16047/16047 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9072 event pairs, 59 based on Foata normal form. 10/1710 useless extension candidates. Maximal degree in co-relation 10827. Up to 612 conditions per place. [2023-11-06 22:30:41,879 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 204 selfloop transitions, 141 changer transitions 13/358 dead transitions. [2023-11-06 22:30:41,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 358 transitions, 5811 flow [2023-11-06 22:30:41,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:30:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 22:30:41,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2776 transitions. [2023-11-06 22:30:41,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925339366515837 [2023-11-06 22:30:41,882 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2776 transitions. [2023-11-06 22:30:41,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2776 transitions. [2023-11-06 22:30:41,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:41,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2776 transitions. [2023-11-06 22:30:41,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 173.5) internal successors, (2776), 16 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:41,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 442.0) internal successors, (7514), 17 states have internal predecessors, (7514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:41,890 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 442.0) internal successors, (7514), 17 states have internal predecessors, (7514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:41,890 INFO L175 Difference]: Start difference. First operand has 192 places, 237 transitions, 3988 flow. Second operand 16 states and 2776 transitions. [2023-11-06 22:30:41,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 358 transitions, 5811 flow [2023-11-06 22:30:41,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 358 transitions, 5507 flow, removed 75 selfloop flow, removed 7 redundant places. [2023-11-06 22:30:41,983 INFO L231 Difference]: Finished difference. Result has 206 places, 267 transitions, 4506 flow [2023-11-06 22:30:41,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=3734, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4506, PETRI_PLACES=206, PETRI_TRANSITIONS=267} [2023-11-06 22:30:41,984 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 180 predicate places. [2023-11-06 22:30:41,985 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 267 transitions, 4506 flow [2023-11-06 22:30:41,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 166.75) internal successors, (2001), 12 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:41,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:41,985 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:41,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-06 22:30:41,986 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:41,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:41,986 INFO L85 PathProgramCache]: Analyzing trace with hash 572559148, now seen corresponding path program 3 times [2023-11-06 22:30:41,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:41,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433687458] [2023-11-06 22:30:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:41,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:42,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:42,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433687458] [2023-11-06 22:30:42,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433687458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:42,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:42,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:30:42,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125253512] [2023-11-06 22:30:42,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:42,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:30:42,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:42,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:30:42,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:30:43,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 442 [2023-11-06 22:30:43,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 267 transitions, 4506 flow. Second operand has 13 states, 13 states have (on average 168.6153846153846) internal successors, (2192), 13 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:43,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:43,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 442 [2023-11-06 22:30:43,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:45,282 INFO L124 PetriNetUnfolderBase]: 942/1662 cut-off events. [2023-11-06 22:30:45,282 INFO L125 PetriNetUnfolderBase]: For 15679/15679 co-relation queries the response was YES. [2023-11-06 22:30:45,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11239 conditions, 1662 events. 942/1662 cut-off events. For 15679/15679 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8648 event pairs, 105 based on Foata normal form. 1/1663 useless extension candidates. Maximal degree in co-relation 11126. Up to 324 conditions per place. [2023-11-06 22:30:45,296 INFO L140 encePairwiseOnDemand]: 427/442 looper letters, 201 selfloop transitions, 166 changer transitions 6/373 dead transitions. [2023-11-06 22:30:45,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 373 transitions, 5886 flow [2023-11-06 22:30:45,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:30:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:30:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4188 transitions. [2023-11-06 22:30:45,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3947963800904977 [2023-11-06 22:30:45,301 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4188 transitions. [2023-11-06 22:30:45,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4188 transitions. [2023-11-06 22:30:45,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:45,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4188 transitions. [2023-11-06 22:30:45,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 174.5) internal successors, (4188), 24 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:45,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 442.0) internal successors, (11050), 25 states have internal predecessors, (11050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:45,311 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 442.0) internal successors, (11050), 25 states have internal predecessors, (11050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:45,312 INFO L175 Difference]: Start difference. First operand has 206 places, 267 transitions, 4506 flow. Second operand 24 states and 4188 transitions. [2023-11-06 22:30:45,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 373 transitions, 5886 flow [2023-11-06 22:30:45,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 373 transitions, 5761 flow, removed 43 selfloop flow, removed 5 redundant places. [2023-11-06 22:30:45,407 INFO L231 Difference]: Finished difference. Result has 223 places, 266 transitions, 4715 flow [2023-11-06 22:30:45,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=4393, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4715, PETRI_PLACES=223, PETRI_TRANSITIONS=266} [2023-11-06 22:30:45,408 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 197 predicate places. [2023-11-06 22:30:45,408 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 266 transitions, 4715 flow [2023-11-06 22:30:45,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 168.6153846153846) internal successors, (2192), 13 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:45,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:45,408 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:45,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-06 22:30:45,409 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:45,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:45,409 INFO L85 PathProgramCache]: Analyzing trace with hash 227903184, now seen corresponding path program 4 times [2023-11-06 22:30:45,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:45,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815405766] [2023-11-06 22:30:45,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:45,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:46,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:46,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815405766] [2023-11-06 22:30:46,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815405766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:46,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:46,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:30:46,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557745450] [2023-11-06 22:30:46,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:30:46,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:46,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:30:46,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:30:46,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 442 [2023-11-06 22:30:46,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 266 transitions, 4715 flow. Second operand has 12 states, 12 states have (on average 167.75) internal successors, (2013), 12 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:46,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:46,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 442 [2023-11-06 22:30:46,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:48,252 INFO L124 PetriNetUnfolderBase]: 1161/2068 cut-off events. [2023-11-06 22:30:48,252 INFO L125 PetriNetUnfolderBase]: For 19532/19532 co-relation queries the response was YES. [2023-11-06 22:30:48,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14210 conditions, 2068 events. 1161/2068 cut-off events. For 19532/19532 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11583 event pairs, 98 based on Foata normal form. 2/2070 useless extension candidates. Maximal degree in co-relation 14097. Up to 412 conditions per place. [2023-11-06 22:30:48,273 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 206 selfloop transitions, 221 changer transitions 6/433 dead transitions. [2023-11-06 22:30:48,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 433 transitions, 7088 flow [2023-11-06 22:30:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-06 22:30:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-06 22:30:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5020 transitions. [2023-11-06 22:30:48,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916367608051178 [2023-11-06 22:30:48,279 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 5020 transitions. [2023-11-06 22:30:48,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 5020 transitions. [2023-11-06 22:30:48,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:48,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 5020 transitions. [2023-11-06 22:30:48,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 173.10344827586206) internal successors, (5020), 29 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:48,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 442.0) internal successors, (13260), 30 states have internal predecessors, (13260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:48,290 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 442.0) internal successors, (13260), 30 states have internal predecessors, (13260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:48,290 INFO L175 Difference]: Start difference. First operand has 223 places, 266 transitions, 4715 flow. Second operand 29 states and 5020 transitions. [2023-11-06 22:30:48,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 433 transitions, 7088 flow [2023-11-06 22:30:48,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 433 transitions, 6613 flow, removed 7 selfloop flow, removed 23 redundant places. [2023-11-06 22:30:48,418 INFO L231 Difference]: Finished difference. Result has 240 places, 332 transitions, 6031 flow [2023-11-06 22:30:48,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=4349, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6031, PETRI_PLACES=240, PETRI_TRANSITIONS=332} [2023-11-06 22:30:48,418 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 214 predicate places. [2023-11-06 22:30:48,419 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 332 transitions, 6031 flow [2023-11-06 22:30:48,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 167.75) internal successors, (2013), 12 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:48,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:48,419 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:48,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-06 22:30:48,419 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:48,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:48,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1274647982, now seen corresponding path program 5 times [2023-11-06 22:30:48,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:48,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966261584] [2023-11-06 22:30:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:48,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:49,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:49,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966261584] [2023-11-06 22:30:49,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966261584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:49,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:49,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:30:49,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991330913] [2023-11-06 22:30:49,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:49,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:30:49,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:49,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:30:49,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:30:49,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 442 [2023-11-06 22:30:49,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 332 transitions, 6031 flow. Second operand has 13 states, 13 states have (on average 168.6153846153846) internal successors, (2192), 13 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:49,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:49,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 442 [2023-11-06 22:30:49,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:50,913 INFO L124 PetriNetUnfolderBase]: 1159/2063 cut-off events. [2023-11-06 22:30:50,914 INFO L125 PetriNetUnfolderBase]: For 22224/22224 co-relation queries the response was YES. [2023-11-06 22:30:50,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14888 conditions, 2063 events. 1159/2063 cut-off events. For 22224/22224 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11515 event pairs, 122 based on Foata normal form. 3/2066 useless extension candidates. Maximal degree in co-relation 14762. Up to 923 conditions per place. [2023-11-06 22:30:50,932 INFO L140 encePairwiseOnDemand]: 427/442 looper letters, 223 selfloop transitions, 168 changer transitions 9/400 dead transitions. [2023-11-06 22:30:50,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 400 transitions, 7326 flow [2023-11-06 22:30:50,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:30:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:30:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3133 transitions. [2023-11-06 22:30:50,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3937908496732026 [2023-11-06 22:30:50,936 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3133 transitions. [2023-11-06 22:30:50,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3133 transitions. [2023-11-06 22:30:50,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:50,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3133 transitions. [2023-11-06 22:30:50,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 174.05555555555554) internal successors, (3133), 18 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:50,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 442.0) internal successors, (8398), 19 states have internal predecessors, (8398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:50,943 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 442.0) internal successors, (8398), 19 states have internal predecessors, (8398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:50,944 INFO L175 Difference]: Start difference. First operand has 240 places, 332 transitions, 6031 flow. Second operand 18 states and 3133 transitions. [2023-11-06 22:30:50,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 400 transitions, 7326 flow [2023-11-06 22:30:51,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 400 transitions, 6992 flow, removed 67 selfloop flow, removed 8 redundant places. [2023-11-06 22:30:51,124 INFO L231 Difference]: Finished difference. Result has 254 places, 339 transitions, 6201 flow [2023-11-06 22:30:51,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=5719, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6201, PETRI_PLACES=254, PETRI_TRANSITIONS=339} [2023-11-06 22:30:51,124 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 228 predicate places. [2023-11-06 22:30:51,125 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 339 transitions, 6201 flow [2023-11-06 22:30:51,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 168.6153846153846) internal successors, (2192), 13 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:51,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:51,125 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:51,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-06 22:30:51,126 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:51,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash -448653740, now seen corresponding path program 6 times [2023-11-06 22:30:51,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:51,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695337277] [2023-11-06 22:30:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:51,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:51,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:51,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695337277] [2023-11-06 22:30:51,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695337277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:51,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:51,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:30:51,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546652640] [2023-11-06 22:30:51,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:51,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:30:51,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:51,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:30:51,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:30:52,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 442 [2023-11-06 22:30:52,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 339 transitions, 6201 flow. Second operand has 12 states, 12 states have (on average 166.75) internal successors, (2001), 12 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:52,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:52,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 442 [2023-11-06 22:30:52,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:53,779 INFO L124 PetriNetUnfolderBase]: 1260/2267 cut-off events. [2023-11-06 22:30:53,779 INFO L125 PetriNetUnfolderBase]: For 23460/23460 co-relation queries the response was YES. [2023-11-06 22:30:53,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16216 conditions, 2267 events. 1260/2267 cut-off events. For 23460/23460 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13181 event pairs, 162 based on Foata normal form. 10/2277 useless extension candidates. Maximal degree in co-relation 16085. Up to 573 conditions per place. [2023-11-06 22:30:53,806 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 235 selfloop transitions, 199 changer transitions 8/442 dead transitions. [2023-11-06 22:30:53,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 442 transitions, 7993 flow [2023-11-06 22:30:53,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:30:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:30:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3788 transitions. [2023-11-06 22:30:53,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3895516248457425 [2023-11-06 22:30:53,811 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3788 transitions. [2023-11-06 22:30:53,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3788 transitions. [2023-11-06 22:30:53,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:53,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3788 transitions. [2023-11-06 22:30:53,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 172.1818181818182) internal successors, (3788), 22 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:53,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 442.0) internal successors, (10166), 23 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:53,825 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 442.0) internal successors, (10166), 23 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:53,826 INFO L175 Difference]: Start difference. First operand has 254 places, 339 transitions, 6201 flow. Second operand 22 states and 3788 transitions. [2023-11-06 22:30:53,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 442 transitions, 7993 flow [2023-11-06 22:30:54,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 442 transitions, 7679 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-11-06 22:30:54,091 INFO L231 Difference]: Finished difference. Result has 269 places, 371 transitions, 7021 flow [2023-11-06 22:30:54,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=5915, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7021, PETRI_PLACES=269, PETRI_TRANSITIONS=371} [2023-11-06 22:30:54,092 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 243 predicate places. [2023-11-06 22:30:54,092 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 371 transitions, 7021 flow [2023-11-06 22:30:54,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 166.75) internal successors, (2001), 12 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:54,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:54,092 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:54,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-06 22:30:54,093 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:54,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:54,093 INFO L85 PathProgramCache]: Analyzing trace with hash 450236830, now seen corresponding path program 7 times [2023-11-06 22:30:54,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:54,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005943634] [2023-11-06 22:30:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:54,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:55,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:55,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005943634] [2023-11-06 22:30:55,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005943634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:55,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129980647] [2023-11-06 22:30:55,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:30:55,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:55,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:55,822 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:55,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:30:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:56,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:30:56,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:56,283 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:30:56,284 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 39 [2023-11-06 22:30:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:30:56,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:30:56,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129980647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:56,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:30:56,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 25 [2023-11-06 22:30:56,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475570035] [2023-11-06 22:30:56,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:56,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:30:56,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:56,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:30:56,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:30:56,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2023-11-06 22:30:56,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 371 transitions, 7021 flow. Second operand has 11 states, 11 states have (on average 169.9090909090909) internal successors, (1869), 11 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:56,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:30:56,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2023-11-06 22:30:56,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:30:57,966 INFO L124 PetriNetUnfolderBase]: 1261/2270 cut-off events. [2023-11-06 22:30:57,966 INFO L125 PetriNetUnfolderBase]: For 25142/25142 co-relation queries the response was YES. [2023-11-06 22:30:57,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16708 conditions, 2270 events. 1261/2270 cut-off events. For 25142/25142 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 13192 event pairs, 329 based on Foata normal form. 2/2272 useless extension candidates. Maximal degree in co-relation 16571. Up to 1085 conditions per place. [2023-11-06 22:30:57,991 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 298 selfloop transitions, 115 changer transitions 6/419 dead transitions. [2023-11-06 22:30:57,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 419 transitions, 8127 flow [2023-11-06 22:30:57,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:30:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:30:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2282 transitions. [2023-11-06 22:30:57,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3971458405847546 [2023-11-06 22:30:57,994 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2282 transitions. [2023-11-06 22:30:57,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2282 transitions. [2023-11-06 22:30:57,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:30:57,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2282 transitions. [2023-11-06 22:30:57,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 175.53846153846155) internal successors, (2282), 13 states have internal predecessors, (2282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:58,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 442.0) internal successors, (6188), 14 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:58,001 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 442.0) internal successors, (6188), 14 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:58,001 INFO L175 Difference]: Start difference. First operand has 269 places, 371 transitions, 7021 flow. Second operand 13 states and 2282 transitions. [2023-11-06 22:30:58,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 419 transitions, 8127 flow [2023-11-06 22:30:58,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 419 transitions, 7783 flow, removed 50 selfloop flow, removed 15 redundant places. [2023-11-06 22:30:58,214 INFO L231 Difference]: Finished difference. Result has 266 places, 373 transitions, 6973 flow [2023-11-06 22:30:58,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=6696, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6973, PETRI_PLACES=266, PETRI_TRANSITIONS=373} [2023-11-06 22:30:58,215 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 240 predicate places. [2023-11-06 22:30:58,215 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 373 transitions, 6973 flow [2023-11-06 22:30:58,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.9090909090909) internal successors, (1869), 11 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:58,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:30:58,216 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:58,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:58,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:58,417 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:30:58,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1496981628, now seen corresponding path program 8 times [2023-11-06 22:30:58,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:58,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911567827] [2023-11-06 22:30:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:58,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:30:59,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:59,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911567827] [2023-11-06 22:30:59,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911567827] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:59,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258320587] [2023-11-06 22:30:59,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:30:59,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:59,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:59,763 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:59,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:31:00,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:31:00,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:31:00,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 22:31:00,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:00,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:00,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258320587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:00,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:00,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 26 [2023-11-06 22:31:00,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307712864] [2023-11-06 22:31:00,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:00,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:31:00,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:00,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:31:00,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:31:00,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2023-11-06 22:31:00,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 373 transitions, 6973 flow. Second operand has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:00,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:00,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2023-11-06 22:31:00,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:02,129 INFO L124 PetriNetUnfolderBase]: 1373/2578 cut-off events. [2023-11-06 22:31:02,129 INFO L125 PetriNetUnfolderBase]: For 27809/27813 co-relation queries the response was YES. [2023-11-06 22:31:02,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18171 conditions, 2578 events. 1373/2578 cut-off events. For 27809/27813 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 16057 event pairs, 241 based on Foata normal form. 3/2580 useless extension candidates. Maximal degree in co-relation 18040. Up to 608 conditions per place. [2023-11-06 22:31:02,164 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 350 selfloop transitions, 158 changer transitions 10/527 dead transitions. [2023-11-06 22:31:02,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 527 transitions, 9474 flow [2023-11-06 22:31:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:31:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:31:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3342 transitions. [2023-11-06 22:31:02,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39795189330793046 [2023-11-06 22:31:02,170 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3342 transitions. [2023-11-06 22:31:02,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3342 transitions. [2023-11-06 22:31:02,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:02,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3342 transitions. [2023-11-06 22:31:02,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 175.89473684210526) internal successors, (3342), 19 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:02,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 442.0) internal successors, (8840), 20 states have internal predecessors, (8840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:02,183 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 442.0) internal successors, (8840), 20 states have internal predecessors, (8840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:02,183 INFO L175 Difference]: Start difference. First operand has 266 places, 373 transitions, 6973 flow. Second operand 19 states and 3342 transitions. [2023-11-06 22:31:02,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 527 transitions, 9474 flow [2023-11-06 22:31:02,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 527 transitions, 9235 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-11-06 22:31:02,429 INFO L231 Difference]: Finished difference. Result has 284 places, 406 transitions, 7837 flow [2023-11-06 22:31:02,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=6758, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=7837, PETRI_PLACES=284, PETRI_TRANSITIONS=406} [2023-11-06 22:31:02,430 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 258 predicate places. [2023-11-06 22:31:02,430 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 406 transitions, 7837 flow [2023-11-06 22:31:02,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:02,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:02,430 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:02,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:02,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:02,631 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:02,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash -670987386, now seen corresponding path program 9 times [2023-11-06 22:31:02,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:02,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537642778] [2023-11-06 22:31:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:02,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:03,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:03,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537642778] [2023-11-06 22:31:03,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537642778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:03,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:03,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:31:03,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324491743] [2023-11-06 22:31:03,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:03,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:31:03,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:03,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:31:03,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:31:03,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 442 [2023-11-06 22:31:03,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 406 transitions, 7837 flow. Second operand has 12 states, 12 states have (on average 166.75) internal successors, (2001), 12 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:03,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:03,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 442 [2023-11-06 22:31:03,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:05,241 INFO L124 PetriNetUnfolderBase]: 1527/2750 cut-off events. [2023-11-06 22:31:05,241 INFO L125 PetriNetUnfolderBase]: For 33893/33893 co-relation queries the response was YES. [2023-11-06 22:31:05,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20018 conditions, 2750 events. 1527/2750 cut-off events. For 33893/33893 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 16578 event pairs, 201 based on Foata normal form. 15/2765 useless extension candidates. Maximal degree in co-relation 19879. Up to 710 conditions per place. [2023-11-06 22:31:05,273 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 214 selfloop transitions, 245 changer transitions 9/468 dead transitions. [2023-11-06 22:31:05,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 468 transitions, 9000 flow [2023-11-06 22:31:05,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:31:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-06 22:31:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3963 transitions. [2023-11-06 22:31:05,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38982884123549083 [2023-11-06 22:31:05,279 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3963 transitions. [2023-11-06 22:31:05,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3963 transitions. [2023-11-06 22:31:05,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:05,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3963 transitions. [2023-11-06 22:31:05,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 172.30434782608697) internal successors, (3963), 23 states have internal predecessors, (3963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:05,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 442.0) internal successors, (10608), 24 states have internal predecessors, (10608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:05,294 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 442.0) internal successors, (10608), 24 states have internal predecessors, (10608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:05,295 INFO L175 Difference]: Start difference. First operand has 284 places, 406 transitions, 7837 flow. Second operand 23 states and 3963 transitions. [2023-11-06 22:31:05,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 468 transitions, 9000 flow [2023-11-06 22:31:05,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 468 transitions, 8828 flow, removed 34 selfloop flow, removed 7 redundant places. [2023-11-06 22:31:05,688 INFO L231 Difference]: Finished difference. Result has 297 places, 397 transitions, 8020 flow [2023-11-06 22:31:05,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=7623, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=8020, PETRI_PLACES=297, PETRI_TRANSITIONS=397} [2023-11-06 22:31:05,689 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 271 predicate places. [2023-11-06 22:31:05,689 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 397 transitions, 8020 flow [2023-11-06 22:31:05,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 166.75) internal successors, (2001), 12 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:05,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:05,690 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:05,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-06 22:31:05,690 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:05,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:05,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1201126254, now seen corresponding path program 10 times [2023-11-06 22:31:05,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:05,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496191804] [2023-11-06 22:31:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:05,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:06,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:06,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496191804] [2023-11-06 22:31:06,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496191804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:06,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:06,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:31:06,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762651257] [2023-11-06 22:31:06,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:06,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:31:06,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:06,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:31:06,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:31:07,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2023-11-06 22:31:07,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 397 transitions, 8020 flow. Second operand has 13 states, 13 states have (on average 169.6153846153846) internal successors, (2205), 13 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:07,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:07,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2023-11-06 22:31:07,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:08,339 INFO L124 PetriNetUnfolderBase]: 1517/2724 cut-off events. [2023-11-06 22:31:08,339 INFO L125 PetriNetUnfolderBase]: For 35271/35271 co-relation queries the response was YES. [2023-11-06 22:31:08,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20351 conditions, 2724 events. 1517/2724 cut-off events. For 35271/35271 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16266 event pairs, 243 based on Foata normal form. 3/2727 useless extension candidates. Maximal degree in co-relation 20213. Up to 971 conditions per place. [2023-11-06 22:31:08,370 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 262 selfloop transitions, 163 changer transitions 12/437 dead transitions. [2023-11-06 22:31:08,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 437 transitions, 9122 flow [2023-11-06 22:31:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:31:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:31:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2625 transitions. [2023-11-06 22:31:08,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39592760180995473 [2023-11-06 22:31:08,374 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2625 transitions. [2023-11-06 22:31:08,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2625 transitions. [2023-11-06 22:31:08,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:08,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2625 transitions. [2023-11-06 22:31:08,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 175.0) internal successors, (2625), 15 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:08,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:08,384 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:08,384 INFO L175 Difference]: Start difference. First operand has 297 places, 397 transitions, 8020 flow. Second operand 15 states and 2625 transitions. [2023-11-06 22:31:08,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 437 transitions, 9122 flow [2023-11-06 22:31:08,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 437 transitions, 8627 flow, removed 3 selfloop flow, removed 21 redundant places. [2023-11-06 22:31:08,683 INFO L231 Difference]: Finished difference. Result has 291 places, 395 transitions, 7831 flow [2023-11-06 22:31:08,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=7537, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7831, PETRI_PLACES=291, PETRI_TRANSITIONS=395} [2023-11-06 22:31:08,684 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 265 predicate places. [2023-11-06 22:31:08,684 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 395 transitions, 7831 flow [2023-11-06 22:31:08,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 169.6153846153846) internal successors, (2205), 13 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:08,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:08,685 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:08,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-06 22:31:08,685 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:08,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:08,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1428711452, now seen corresponding path program 11 times [2023-11-06 22:31:08,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:08,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944702654] [2023-11-06 22:31:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:08,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:09,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:09,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944702654] [2023-11-06 22:31:09,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944702654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:09,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:09,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:31:09,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187467588] [2023-11-06 22:31:09,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:09,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:31:09,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:09,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:31:09,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:31:10,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2023-11-06 22:31:10,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 395 transitions, 7831 flow. Second operand has 13 states, 13 states have (on average 169.6153846153846) internal successors, (2205), 13 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:10,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:10,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2023-11-06 22:31:10,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:11,535 INFO L124 PetriNetUnfolderBase]: 1521/2736 cut-off events. [2023-11-06 22:31:11,535 INFO L125 PetriNetUnfolderBase]: For 34435/34435 co-relation queries the response was YES. [2023-11-06 22:31:11,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20254 conditions, 2736 events. 1521/2736 cut-off events. For 34435/34435 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16399 event pairs, 241 based on Foata normal form. 3/2739 useless extension candidates. Maximal degree in co-relation 20115. Up to 975 conditions per place. [2023-11-06 22:31:11,567 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 273 selfloop transitions, 171 changer transitions 9/453 dead transitions. [2023-11-06 22:31:11,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 453 transitions, 9149 flow [2023-11-06 22:31:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:31:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:31:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3824 transitions. [2023-11-06 22:31:11,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932538050185109 [2023-11-06 22:31:11,655 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3824 transitions. [2023-11-06 22:31:11,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3824 transitions. [2023-11-06 22:31:11,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:11,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3824 transitions. [2023-11-06 22:31:11,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 173.8181818181818) internal successors, (3824), 22 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:11,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 442.0) internal successors, (10166), 23 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:11,669 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 442.0) internal successors, (10166), 23 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:11,670 INFO L175 Difference]: Start difference. First operand has 291 places, 395 transitions, 7831 flow. Second operand 22 states and 3824 transitions. [2023-11-06 22:31:11,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 453 transitions, 9149 flow [2023-11-06 22:31:11,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 453 transitions, 8795 flow, removed 9 selfloop flow, removed 13 redundant places. [2023-11-06 22:31:11,952 INFO L231 Difference]: Finished difference. Result has 301 places, 402 transitions, 7999 flow [2023-11-06 22:31:11,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=7499, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7999, PETRI_PLACES=301, PETRI_TRANSITIONS=402} [2023-11-06 22:31:11,953 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 275 predicate places. [2023-11-06 22:31:11,953 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 402 transitions, 7999 flow [2023-11-06 22:31:11,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 169.6153846153846) internal successors, (2205), 13 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:11,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:11,954 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:11,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-06 22:31:11,954 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:11,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash 978643734, now seen corresponding path program 12 times [2023-11-06 22:31:11,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:11,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745372967] [2023-11-06 22:31:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:11,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:31:13,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:13,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745372967] [2023-11-06 22:31:13,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745372967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:13,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798996809] [2023-11-06 22:31:13,338 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:31:13,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:13,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:13,339 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:13,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:31:13,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-06 22:31:13,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:31:13,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:31:13,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:13,940 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:13,940 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 55 [2023-11-06 22:31:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:14,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:14,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798996809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:14,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:14,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 24 [2023-11-06 22:31:14,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261321865] [2023-11-06 22:31:14,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:14,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:31:14,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:14,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:31:14,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:31:14,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2023-11-06 22:31:14,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 402 transitions, 7999 flow. Second operand has 11 states, 11 states have (on average 169.9090909090909) internal successors, (1869), 11 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:14,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:14,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2023-11-06 22:31:14,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:16,292 INFO L124 PetriNetUnfolderBase]: 1527/2756 cut-off events. [2023-11-06 22:31:16,292 INFO L125 PetriNetUnfolderBase]: For 35263/35263 co-relation queries the response was YES. [2023-11-06 22:31:16,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20438 conditions, 2756 events. 1527/2756 cut-off events. For 35263/35263 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16577 event pairs, 480 based on Foata normal form. 3/2759 useless extension candidates. Maximal degree in co-relation 20296. Up to 1646 conditions per place. [2023-11-06 22:31:16,329 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 307 selfloop transitions, 130 changer transitions 7/444 dead transitions. [2023-11-06 22:31:16,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 444 transitions, 9214 flow [2023-11-06 22:31:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:31:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:31:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1932 transitions. [2023-11-06 22:31:16,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973673385438091 [2023-11-06 22:31:16,333 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1932 transitions. [2023-11-06 22:31:16,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1932 transitions. [2023-11-06 22:31:16,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:16,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1932 transitions. [2023-11-06 22:31:16,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 175.63636363636363) internal successors, (1932), 11 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:16,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 442.0) internal successors, (5304), 12 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:16,342 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 442.0) internal successors, (5304), 12 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:16,342 INFO L175 Difference]: Start difference. First operand has 301 places, 402 transitions, 7999 flow. Second operand 11 states and 1932 transitions. [2023-11-06 22:31:16,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 444 transitions, 9214 flow [2023-11-06 22:31:16,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 444 transitions, 8966 flow, removed 12 selfloop flow, removed 14 redundant places. [2023-11-06 22:31:16,779 INFO L231 Difference]: Finished difference. Result has 297 places, 408 transitions, 8205 flow [2023-11-06 22:31:16,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=7766, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8205, PETRI_PLACES=297, PETRI_TRANSITIONS=408} [2023-11-06 22:31:16,780 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 271 predicate places. [2023-11-06 22:31:16,780 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 408 transitions, 8205 flow [2023-11-06 22:31:16,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.9090909090909) internal successors, (1869), 11 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:16,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:16,781 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:16,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:16,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-06 22:31:16,986 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:16,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash -994172906, now seen corresponding path program 13 times [2023-11-06 22:31:16,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:16,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436726755] [2023-11-06 22:31:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:16,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:17,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:17,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436726755] [2023-11-06 22:31:17,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436726755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:17,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:17,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:31:17,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217757011] [2023-11-06 22:31:17,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:17,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:31:17,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:31:17,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:31:18,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2023-11-06 22:31:18,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 408 transitions, 8205 flow. Second operand has 13 states, 13 states have (on average 169.6153846153846) internal successors, (2205), 13 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:18,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:18,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2023-11-06 22:31:18,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:19,748 INFO L124 PetriNetUnfolderBase]: 1522/2735 cut-off events. [2023-11-06 22:31:19,748 INFO L125 PetriNetUnfolderBase]: For 34252/34252 co-relation queries the response was YES. [2023-11-06 22:31:19,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20208 conditions, 2735 events. 1522/2735 cut-off events. For 34252/34252 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 16344 event pairs, 221 based on Foata normal form. 3/2738 useless extension candidates. Maximal degree in co-relation 20066. Up to 979 conditions per place. [2023-11-06 22:31:19,775 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 276 selfloop transitions, 169 changer transitions 9/454 dead transitions. [2023-11-06 22:31:19,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 454 transitions, 9297 flow [2023-11-06 22:31:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:31:19,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 22:31:19,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3656 transitions. [2023-11-06 22:31:19,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3938806291747468 [2023-11-06 22:31:19,779 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3656 transitions. [2023-11-06 22:31:19,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3656 transitions. [2023-11-06 22:31:19,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:19,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3656 transitions. [2023-11-06 22:31:19,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 174.0952380952381) internal successors, (3656), 21 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:19,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 442.0) internal successors, (9724), 22 states have internal predecessors, (9724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:19,788 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 442.0) internal successors, (9724), 22 states have internal predecessors, (9724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:19,788 INFO L175 Difference]: Start difference. First operand has 297 places, 408 transitions, 8205 flow. Second operand 21 states and 3656 transitions. [2023-11-06 22:31:19,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 454 transitions, 9297 flow [2023-11-06 22:31:20,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 454 transitions, 9065 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-06 22:31:20,049 INFO L231 Difference]: Finished difference. Result has 310 places, 407 transitions, 8272 flow [2023-11-06 22:31:20,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=7948, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8272, PETRI_PLACES=310, PETRI_TRANSITIONS=407} [2023-11-06 22:31:20,050 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 284 predicate places. [2023-11-06 22:31:20,050 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 407 transitions, 8272 flow [2023-11-06 22:31:20,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 169.6153846153846) internal successors, (2205), 13 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:20,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:20,050 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:20,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-06 22:31:20,050 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:20,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1046724372, now seen corresponding path program 14 times [2023-11-06 22:31:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:20,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67946283] [2023-11-06 22:31:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:20,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:20,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:20,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67946283] [2023-11-06 22:31:20,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67946283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:20,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:20,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:31:20,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699659052] [2023-11-06 22:31:20,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:20,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:31:20,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:20,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:31:20,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:31:22,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 442 [2023-11-06 22:31:22,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 407 transitions, 8272 flow. Second operand has 14 states, 14 states have (on average 165.5) internal successors, (2317), 14 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:22,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:22,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 442 [2023-11-06 22:31:22,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:24,152 INFO L124 PetriNetUnfolderBase]: 1633/2958 cut-off events. [2023-11-06 22:31:24,152 INFO L125 PetriNetUnfolderBase]: For 37325/37325 co-relation queries the response was YES. [2023-11-06 22:31:24,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21970 conditions, 2958 events. 1633/2958 cut-off events. For 37325/37325 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 18308 event pairs, 233 based on Foata normal form. 1/2959 useless extension candidates. Maximal degree in co-relation 21827. Up to 930 conditions per place. [2023-11-06 22:31:24,185 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 251 selfloop transitions, 280 changer transitions 5/536 dead transitions. [2023-11-06 22:31:24,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 536 transitions, 10541 flow [2023-11-06 22:31:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-06 22:31:24,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-06 22:31:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4930 transitions. [2023-11-06 22:31:24,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2023-11-06 22:31:24,190 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4930 transitions. [2023-11-06 22:31:24,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4930 transitions. [2023-11-06 22:31:24,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:24,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4930 transitions. [2023-11-06 22:31:24,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 170.0) internal successors, (4930), 29 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:24,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 442.0) internal successors, (13260), 30 states have internal predecessors, (13260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:24,206 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 442.0) internal successors, (13260), 30 states have internal predecessors, (13260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:24,206 INFO L175 Difference]: Start difference. First operand has 310 places, 407 transitions, 8272 flow. Second operand 29 states and 4930 transitions. [2023-11-06 22:31:24,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 536 transitions, 10541 flow [2023-11-06 22:31:24,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 536 transitions, 10175 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-11-06 22:31:24,544 INFO L231 Difference]: Finished difference. Result has 330 places, 448 transitions, 9401 flow [2023-11-06 22:31:24,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=7946, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9401, PETRI_PLACES=330, PETRI_TRANSITIONS=448} [2023-11-06 22:31:24,544 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 304 predicate places. [2023-11-06 22:31:24,545 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 448 transitions, 9401 flow [2023-11-06 22:31:24,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 165.5) internal successors, (2317), 14 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:24,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:24,545 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:24,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-06 22:31:24,546 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:24,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash -888334524, now seen corresponding path program 15 times [2023-11-06 22:31:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:24,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910921153] [2023-11-06 22:31:24,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:24,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:25,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:25,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910921153] [2023-11-06 22:31:25,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910921153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:25,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:25,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:31:25,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484162237] [2023-11-06 22:31:25,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:25,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:31:25,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:25,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:31:25,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:31:26,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 442 [2023-11-06 22:31:26,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 448 transitions, 9401 flow. Second operand has 13 states, 13 states have (on average 162.6153846153846) internal successors, (2114), 13 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:26,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:26,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 442 [2023-11-06 22:31:26,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:27,941 INFO L124 PetriNetUnfolderBase]: 1861/3336 cut-off events. [2023-11-06 22:31:27,941 INFO L125 PetriNetUnfolderBase]: For 42750/42750 co-relation queries the response was YES. [2023-11-06 22:31:27,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24902 conditions, 3336 events. 1861/3336 cut-off events. For 42750/42750 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 20755 event pairs, 218 based on Foata normal form. 5/3341 useless extension candidates. Maximal degree in co-relation 24754. Up to 688 conditions per place. [2023-11-06 22:31:27,979 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 234 selfloop transitions, 288 changer transitions 13/535 dead transitions. [2023-11-06 22:31:27,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 535 transitions, 11125 flow [2023-11-06 22:31:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:31:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:31:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3025 transitions. [2023-11-06 22:31:27,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38021618903971843 [2023-11-06 22:31:27,983 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3025 transitions. [2023-11-06 22:31:27,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3025 transitions. [2023-11-06 22:31:27,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:27,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3025 transitions. [2023-11-06 22:31:27,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 168.05555555555554) internal successors, (3025), 18 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:27,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 442.0) internal successors, (8398), 19 states have internal predecessors, (8398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:27,991 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 442.0) internal successors, (8398), 19 states have internal predecessors, (8398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:27,992 INFO L175 Difference]: Start difference. First operand has 330 places, 448 transitions, 9401 flow. Second operand 18 states and 3025 transitions. [2023-11-06 22:31:27,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 535 transitions, 11125 flow [2023-11-06 22:31:28,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 535 transitions, 10733 flow, removed 21 selfloop flow, removed 10 redundant places. [2023-11-06 22:31:28,438 INFO L231 Difference]: Finished difference. Result has 340 places, 463 transitions, 9963 flow [2023-11-06 22:31:28,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=9013, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9963, PETRI_PLACES=340, PETRI_TRANSITIONS=463} [2023-11-06 22:31:28,439 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 314 predicate places. [2023-11-06 22:31:28,439 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 463 transitions, 9963 flow [2023-11-06 22:31:28,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 162.6153846153846) internal successors, (2114), 13 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:28,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:28,440 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:28,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-06 22:31:28,440 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:28,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:28,441 INFO L85 PathProgramCache]: Analyzing trace with hash -733685034, now seen corresponding path program 16 times [2023-11-06 22:31:28,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:28,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281715441] [2023-11-06 22:31:28,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:28,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:29,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:31:29,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:29,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281715441] [2023-11-06 22:31:29,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281715441] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:29,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508321305] [2023-11-06 22:31:29,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:31:29,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:29,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:29,792 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:29,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:31:30,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:31:30,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:31:30,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:31:30,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:30,220 INFO L322 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-11-06 22:31:30,220 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 44 [2023-11-06 22:31:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:30,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:30,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508321305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:30,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:30,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 24 [2023-11-06 22:31:30,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91380246] [2023-11-06 22:31:30,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:30,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:31:30,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:30,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:31:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:31:30,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 442 [2023-11-06 22:31:30,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 463 transitions, 9963 flow. Second operand has 8 states, 8 states have (on average 176.625) internal successors, (1413), 8 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:30,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:30,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 442 [2023-11-06 22:31:30,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:32,529 INFO L124 PetriNetUnfolderBase]: 1861/3361 cut-off events. [2023-11-06 22:31:32,530 INFO L125 PetriNetUnfolderBase]: For 47568/47568 co-relation queries the response was YES. [2023-11-06 22:31:32,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25917 conditions, 3361 events. 1861/3361 cut-off events. For 47568/47568 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 21218 event pairs, 430 based on Foata normal form. 1/3362 useless extension candidates. Maximal degree in co-relation 25769. Up to 1303 conditions per place. [2023-11-06 22:31:32,580 INFO L140 encePairwiseOnDemand]: 431/442 looper letters, 321 selfloop transitions, 215 changer transitions 5/541 dead transitions. [2023-11-06 22:31:32,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 541 transitions, 11569 flow [2023-11-06 22:31:32,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:31:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:31:32,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2560 transitions. [2023-11-06 22:31:32,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137039431157078 [2023-11-06 22:31:32,583 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2560 transitions. [2023-11-06 22:31:32,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2560 transitions. [2023-11-06 22:31:32,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:32,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2560 transitions. [2023-11-06 22:31:32,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 182.85714285714286) internal successors, (2560), 14 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:32,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 442.0) internal successors, (6630), 15 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:32,591 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 442.0) internal successors, (6630), 15 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:32,592 INFO L175 Difference]: Start difference. First operand has 340 places, 463 transitions, 9963 flow. Second operand 14 states and 2560 transitions. [2023-11-06 22:31:32,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 541 transitions, 11569 flow [2023-11-06 22:31:33,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 541 transitions, 11113 flow, removed 44 selfloop flow, removed 15 redundant places. [2023-11-06 22:31:33,120 INFO L231 Difference]: Finished difference. Result has 342 places, 473 transitions, 10365 flow [2023-11-06 22:31:33,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=9552, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10365, PETRI_PLACES=342, PETRI_TRANSITIONS=473} [2023-11-06 22:31:33,121 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 316 predicate places. [2023-11-06 22:31:33,122 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 473 transitions, 10365 flow [2023-11-06 22:31:33,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 176.625) internal successors, (1413), 8 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:33,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:33,122 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:33,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:33,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-06 22:31:33,329 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:33,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:33,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2047109054, now seen corresponding path program 17 times [2023-11-06 22:31:33,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:33,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753417782] [2023-11-06 22:31:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:33,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:34,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:34,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753417782] [2023-11-06 22:31:34,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753417782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:34,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:34,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:31:34,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105914591] [2023-11-06 22:31:34,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:34,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:31:34,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:34,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:31:34,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:31:35,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 442 [2023-11-06 22:31:35,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 473 transitions, 10365 flow. Second operand has 14 states, 14 states have (on average 163.5) internal successors, (2289), 14 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:35,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:35,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 442 [2023-11-06 22:31:35,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:37,928 INFO L124 PetriNetUnfolderBase]: 2160/3912 cut-off events. [2023-11-06 22:31:37,929 INFO L125 PetriNetUnfolderBase]: For 55696/55696 co-relation queries the response was YES. [2023-11-06 22:31:37,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29983 conditions, 3912 events. 2160/3912 cut-off events. For 55696/55696 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 25406 event pairs, 232 based on Foata normal form. 9/3921 useless extension candidates. Maximal degree in co-relation 29835. Up to 661 conditions per place. [2023-11-06 22:31:37,996 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 279 selfloop transitions, 368 changer transitions 8/655 dead transitions. [2023-11-06 22:31:37,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 655 transitions, 13233 flow [2023-11-06 22:31:37,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 22:31:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-06 22:31:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4757 transitions. [2023-11-06 22:31:38,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3843729799612153 [2023-11-06 22:31:38,002 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4757 transitions. [2023-11-06 22:31:38,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4757 transitions. [2023-11-06 22:31:38,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:38,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4757 transitions. [2023-11-06 22:31:38,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 169.89285714285714) internal successors, (4757), 28 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:38,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 442.0) internal successors, (12818), 29 states have internal predecessors, (12818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:38,019 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 442.0) internal successors, (12818), 29 states have internal predecessors, (12818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:38,019 INFO L175 Difference]: Start difference. First operand has 342 places, 473 transitions, 10365 flow. Second operand 28 states and 4757 transitions. [2023-11-06 22:31:38,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 655 transitions, 13233 flow [2023-11-06 22:31:38,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 655 transitions, 13169 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-11-06 22:31:38,533 INFO L231 Difference]: Finished difference. Result has 373 places, 508 transitions, 11985 flow [2023-11-06 22:31:38,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=10313, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=11985, PETRI_PLACES=373, PETRI_TRANSITIONS=508} [2023-11-06 22:31:38,535 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 347 predicate places. [2023-11-06 22:31:38,535 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 508 transitions, 11985 flow [2023-11-06 22:31:38,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 163.5) internal successors, (2289), 14 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:38,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:38,536 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:38,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-11-06 22:31:38,536 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:38,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:38,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1354468304, now seen corresponding path program 18 times [2023-11-06 22:31:38,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:38,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175756869] [2023-11-06 22:31:38,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:38,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:31:39,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175756869] [2023-11-06 22:31:39,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175756869] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658224159] [2023-11-06 22:31:39,812 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:31:39,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:39,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:39,813 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:39,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:31:40,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-06 22:31:40,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:31:40,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:31:40,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:40,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:40,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:40,519 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 22:31:40,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2023-11-06 22:31:40,690 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:31:40,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 39 [2023-11-06 22:31:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:40,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:40,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658224159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:40,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:31:40,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 26 [2023-11-06 22:31:40,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126633604] [2023-11-06 22:31:40,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:40,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:31:40,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:40,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:31:40,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:31:41,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 442 [2023-11-06 22:31:41,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 508 transitions, 11985 flow. Second operand has 12 states, 12 states have (on average 165.75) internal successors, (1989), 12 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:41,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:41,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 442 [2023-11-06 22:31:41,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:43,499 INFO L124 PetriNetUnfolderBase]: 2154/3895 cut-off events. [2023-11-06 22:31:43,500 INFO L125 PetriNetUnfolderBase]: For 67247/67247 co-relation queries the response was YES. [2023-11-06 22:31:43,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32153 conditions, 3895 events. 2154/3895 cut-off events. For 67247/67247 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 25228 event pairs, 530 based on Foata normal form. 1/3896 useless extension candidates. Maximal degree in co-relation 31998. Up to 1576 conditions per place. [2023-11-06 22:31:43,547 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 307 selfloop transitions, 253 changer transitions 5/565 dead transitions. [2023-11-06 22:31:43,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 565 transitions, 13429 flow [2023-11-06 22:31:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:31:43,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:31:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2571 transitions. [2023-11-06 22:31:43,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38778280542986426 [2023-11-06 22:31:43,550 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2571 transitions. [2023-11-06 22:31:43,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2571 transitions. [2023-11-06 22:31:43,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:43,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2571 transitions. [2023-11-06 22:31:43,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 171.4) internal successors, (2571), 15 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:43,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:43,556 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:43,556 INFO L175 Difference]: Start difference. First operand has 373 places, 508 transitions, 11985 flow. Second operand 15 states and 2571 transitions. [2023-11-06 22:31:43,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 565 transitions, 13429 flow [2023-11-06 22:31:44,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 565 transitions, 12871 flow, removed 74 selfloop flow, removed 14 redundant places. [2023-11-06 22:31:44,163 INFO L231 Difference]: Finished difference. Result has 372 places, 507 transitions, 11932 flow [2023-11-06 22:31:44,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=11433, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11932, PETRI_PLACES=372, PETRI_TRANSITIONS=507} [2023-11-06 22:31:44,164 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 346 predicate places. [2023-11-06 22:31:44,164 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 507 transitions, 11932 flow [2023-11-06 22:31:44,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 165.75) internal successors, (1989), 12 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:44,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:44,164 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:44,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:44,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:44,365 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:44,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash 592850916, now seen corresponding path program 19 times [2023-11-06 22:31:44,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:44,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888803601] [2023-11-06 22:31:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:44,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:45,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:45,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888803601] [2023-11-06 22:31:45,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888803601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:45,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:45,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:31:45,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255589267] [2023-11-06 22:31:45,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:45,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:31:45,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:45,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:31:45,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:31:46,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 442 [2023-11-06 22:31:46,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 507 transitions, 11932 flow. Second operand has 14 states, 14 states have (on average 165.5) internal successors, (2317), 14 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:46,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:46,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 442 [2023-11-06 22:31:46,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:48,975 INFO L124 PetriNetUnfolderBase]: 2171/3930 cut-off events. [2023-11-06 22:31:48,975 INFO L125 PetriNetUnfolderBase]: For 68427/68427 co-relation queries the response was YES. [2023-11-06 22:31:49,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32302 conditions, 3930 events. 2171/3930 cut-off events. For 68427/68427 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 25564 event pairs, 382 based on Foata normal form. 5/3935 useless extension candidates. Maximal degree in co-relation 32148. Up to 1666 conditions per place. [2023-11-06 22:31:49,021 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 298 selfloop transitions, 264 changer transitions 12/574 dead transitions. [2023-11-06 22:31:49,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 574 transitions, 13674 flow [2023-11-06 22:31:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 22:31:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-06 22:31:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4234 transitions. [2023-11-06 22:31:49,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38316742081447963 [2023-11-06 22:31:49,025 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4234 transitions. [2023-11-06 22:31:49,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4234 transitions. [2023-11-06 22:31:49,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:49,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4234 transitions. [2023-11-06 22:31:49,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 169.36) internal successors, (4234), 25 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:49,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 442.0) internal successors, (11492), 26 states have internal predecessors, (11492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:49,036 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 442.0) internal successors, (11492), 26 states have internal predecessors, (11492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:49,036 INFO L175 Difference]: Start difference. First operand has 372 places, 507 transitions, 11932 flow. Second operand 25 states and 4234 transitions. [2023-11-06 22:31:49,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 574 transitions, 13674 flow [2023-11-06 22:31:49,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 574 transitions, 13317 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-11-06 22:31:49,646 INFO L231 Difference]: Finished difference. Result has 389 places, 517 transitions, 12493 flow [2023-11-06 22:31:49,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=11554, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=12493, PETRI_PLACES=389, PETRI_TRANSITIONS=517} [2023-11-06 22:31:49,647 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 363 predicate places. [2023-11-06 22:31:49,647 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 517 transitions, 12493 flow [2023-11-06 22:31:49,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 165.5) internal successors, (2317), 14 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:49,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:49,648 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:49,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-11-06 22:31:49,649 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:49,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash 354083622, now seen corresponding path program 20 times [2023-11-06 22:31:49,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:49,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431641499] [2023-11-06 22:31:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:49,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:50,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:50,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431641499] [2023-11-06 22:31:50,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431641499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:50,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:50,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:31:50,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616024814] [2023-11-06 22:31:50,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:50,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:31:50,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:50,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:31:50,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:31:51,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 442 [2023-11-06 22:31:51,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 517 transitions, 12493 flow. Second operand has 14 states, 14 states have (on average 164.5) internal successors, (2303), 14 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:51,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:51,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 442 [2023-11-06 22:31:51,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:54,588 INFO L124 PetriNetUnfolderBase]: 2295/4155 cut-off events. [2023-11-06 22:31:54,588 INFO L125 PetriNetUnfolderBase]: For 75737/75737 co-relation queries the response was YES. [2023-11-06 22:31:54,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34412 conditions, 4155 events. 2295/4155 cut-off events. For 75737/75737 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 27223 event pairs, 402 based on Foata normal form. 8/4163 useless extension candidates. Maximal degree in co-relation 34265. Up to 1464 conditions per place. [2023-11-06 22:31:54,649 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 326 selfloop transitions, 298 changer transitions 7/631 dead transitions. [2023-11-06 22:31:54,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 631 transitions, 14600 flow [2023-11-06 22:31:54,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 22:31:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-06 22:31:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4745 transitions. [2023-11-06 22:31:54,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38340336134453784 [2023-11-06 22:31:54,654 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4745 transitions. [2023-11-06 22:31:54,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4745 transitions. [2023-11-06 22:31:54,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:54,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4745 transitions. [2023-11-06 22:31:54,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 169.46428571428572) internal successors, (4745), 28 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:54,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 442.0) internal successors, (12818), 29 states have internal predecessors, (12818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:54,666 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 442.0) internal successors, (12818), 29 states have internal predecessors, (12818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:54,666 INFO L175 Difference]: Start difference. First operand has 389 places, 517 transitions, 12493 flow. Second operand 28 states and 4745 transitions. [2023-11-06 22:31:54,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 631 transitions, 14600 flow [2023-11-06 22:31:55,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 631 transitions, 14162 flow, removed 12 selfloop flow, removed 17 redundant places. [2023-11-06 22:31:55,413 INFO L231 Difference]: Finished difference. Result has 400 places, 527 transitions, 13005 flow [2023-11-06 22:31:55,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=12073, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13005, PETRI_PLACES=400, PETRI_TRANSITIONS=527} [2023-11-06 22:31:55,414 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 374 predicate places. [2023-11-06 22:31:55,414 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 527 transitions, 13005 flow [2023-11-06 22:31:55,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 164.5) internal successors, (2303), 14 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:55,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:55,414 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:55,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-11-06 22:31:55,415 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:31:55,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:55,415 INFO L85 PathProgramCache]: Analyzing trace with hash -678160440, now seen corresponding path program 21 times [2023-11-06 22:31:55,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:55,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931891992] [2023-11-06 22:31:55,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:55,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:31:56,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:56,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931891992] [2023-11-06 22:31:56,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931891992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:56,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:56,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:31:56,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217121819] [2023-11-06 22:31:56,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:56,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:31:56,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:31:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:31:57,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 442 [2023-11-06 22:31:57,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 527 transitions, 13005 flow. Second operand has 14 states, 14 states have (on average 165.5) internal successors, (2317), 14 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:57,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:57,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 442 [2023-11-06 22:31:57,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:00,384 INFO L124 PetriNetUnfolderBase]: 2274/4099 cut-off events. [2023-11-06 22:32:00,385 INFO L125 PetriNetUnfolderBase]: For 76859/76859 co-relation queries the response was YES. [2023-11-06 22:32:00,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35003 conditions, 4099 events. 2274/4099 cut-off events. For 76859/76859 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 26675 event pairs, 395 based on Foata normal form. 6/4105 useless extension candidates. Maximal degree in co-relation 34845. Up to 1797 conditions per place. [2023-11-06 22:32:00,442 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 294 selfloop transitions, 261 changer transitions 13/568 dead transitions. [2023-11-06 22:32:00,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 568 transitions, 14167 flow [2023-11-06 22:32:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:32:00,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:32:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3725 transitions. [2023-11-06 22:32:00,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3830728095433978 [2023-11-06 22:32:00,447 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3725 transitions. [2023-11-06 22:32:00,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3725 transitions. [2023-11-06 22:32:00,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:00,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3725 transitions. [2023-11-06 22:32:00,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 169.3181818181818) internal successors, (3725), 22 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:00,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 442.0) internal successors, (10166), 23 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:00,457 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 442.0) internal successors, (10166), 23 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:00,458 INFO L175 Difference]: Start difference. First operand has 400 places, 527 transitions, 13005 flow. Second operand 22 states and 3725 transitions. [2023-11-06 22:32:00,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 568 transitions, 14167 flow [2023-11-06 22:32:01,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 568 transitions, 13647 flow, removed 30 selfloop flow, removed 21 redundant places. [2023-11-06 22:32:01,358 INFO L231 Difference]: Finished difference. Result has 398 places, 514 transitions, 12694 flow [2023-11-06 22:32:01,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=12309, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12694, PETRI_PLACES=398, PETRI_TRANSITIONS=514} [2023-11-06 22:32:01,359 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 372 predicate places. [2023-11-06 22:32:01,359 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 514 transitions, 12694 flow [2023-11-06 22:32:01,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 165.5) internal successors, (2317), 14 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:01,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:01,360 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:01,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-11-06 22:32:01,360 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:32:01,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash 937910216, now seen corresponding path program 22 times [2023-11-06 22:32:01,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:01,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474004757] [2023-11-06 22:32:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:32:02,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:02,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474004757] [2023-11-06 22:32:02,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474004757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:02,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:02,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:32:02,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973729810] [2023-11-06 22:32:02,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:02,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:32:02,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:02,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:32:02,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:32:03,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 442 [2023-11-06 22:32:03,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 514 transitions, 12694 flow. Second operand has 14 states, 14 states have (on average 165.5) internal successors, (2317), 14 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:03,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:03,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 442 [2023-11-06 22:32:03,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:05,886 INFO L124 PetriNetUnfolderBase]: 2263/4067 cut-off events. [2023-11-06 22:32:05,887 INFO L125 PetriNetUnfolderBase]: For 77068/77068 co-relation queries the response was YES. [2023-11-06 22:32:05,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34993 conditions, 4067 events. 2263/4067 cut-off events. For 77068/77068 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 26294 event pairs, 376 based on Foata normal form. 3/4070 useless extension candidates. Maximal degree in co-relation 34835. Up to 1795 conditions per place. [2023-11-06 22:32:05,959 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 308 selfloop transitions, 234 changer transitions 9/551 dead transitions. [2023-11-06 22:32:05,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 551 transitions, 13907 flow [2023-11-06 22:32:05,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:32:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:32:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3722 transitions. [2023-11-06 22:32:05,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3827642945290004 [2023-11-06 22:32:05,963 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3722 transitions. [2023-11-06 22:32:05,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3722 transitions. [2023-11-06 22:32:05,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:05,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3722 transitions. [2023-11-06 22:32:05,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 169.1818181818182) internal successors, (3722), 22 states have internal predecessors, (3722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:05,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 442.0) internal successors, (10166), 23 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:05,973 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 442.0) internal successors, (10166), 23 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:05,974 INFO L175 Difference]: Start difference. First operand has 398 places, 514 transitions, 12694 flow. Second operand 22 states and 3722 transitions. [2023-11-06 22:32:05,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 551 transitions, 13907 flow [2023-11-06 22:32:06,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 551 transitions, 13421 flow, removed 2 selfloop flow, removed 20 redundant places. [2023-11-06 22:32:06,688 INFO L231 Difference]: Finished difference. Result has 393 places, 510 transitions, 12566 flow [2023-11-06 22:32:06,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=12173, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12566, PETRI_PLACES=393, PETRI_TRANSITIONS=510} [2023-11-06 22:32:06,689 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 367 predicate places. [2023-11-06 22:32:06,689 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 510 transitions, 12566 flow [2023-11-06 22:32:06,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 165.5) internal successors, (2317), 14 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:06,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:06,690 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:06,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-11-06 22:32:06,690 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:32:06,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:06,690 INFO L85 PathProgramCache]: Analyzing trace with hash -774124688, now seen corresponding path program 23 times [2023-11-06 22:32:06,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:06,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267978051] [2023-11-06 22:32:06,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:06,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:32:07,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:07,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267978051] [2023-11-06 22:32:07,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267978051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:07,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:07,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:32:07,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015188413] [2023-11-06 22:32:07,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:07,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:32:07,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:32:07,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:32:07,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 442 [2023-11-06 22:32:07,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 510 transitions, 12566 flow. Second operand has 12 states, 12 states have (on average 168.75) internal successors, (2025), 12 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:07,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:07,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 442 [2023-11-06 22:32:07,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:10,419 INFO L124 PetriNetUnfolderBase]: 2266/4072 cut-off events. [2023-11-06 22:32:10,419 INFO L125 PetriNetUnfolderBase]: For 76185/76185 co-relation queries the response was YES. [2023-11-06 22:32:10,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35032 conditions, 4072 events. 2266/4072 cut-off events. For 76185/76185 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 26311 event pairs, 141 based on Foata normal form. 1/4073 useless extension candidates. Maximal degree in co-relation 34874. Up to 994 conditions per place. [2023-11-06 22:32:10,489 INFO L140 encePairwiseOnDemand]: 429/442 looper letters, 246 selfloop transitions, 354 changer transitions 5/605 dead transitions. [2023-11-06 22:32:10,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 605 transitions, 14637 flow [2023-11-06 22:32:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:32:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-06 22:32:10,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3999 transitions. [2023-11-06 22:32:10,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933700570529215 [2023-11-06 22:32:10,640 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3999 transitions. [2023-11-06 22:32:10,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3999 transitions. [2023-11-06 22:32:10,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:10,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3999 transitions. [2023-11-06 22:32:10,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 173.8695652173913) internal successors, (3999), 23 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:10,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 442.0) internal successors, (10608), 24 states have internal predecessors, (10608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:10,651 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 442.0) internal successors, (10608), 24 states have internal predecessors, (10608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:10,651 INFO L175 Difference]: Start difference. First operand has 393 places, 510 transitions, 12566 flow. Second operand 23 states and 3999 transitions. [2023-11-06 22:32:10,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 605 transitions, 14637 flow [2023-11-06 22:32:11,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 605 transitions, 14080 flow, removed 12 selfloop flow, removed 22 redundant places. [2023-11-06 22:32:11,333 INFO L231 Difference]: Finished difference. Result has 391 places, 535 transitions, 13210 flow [2023-11-06 22:32:11,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=12020, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13210, PETRI_PLACES=391, PETRI_TRANSITIONS=535} [2023-11-06 22:32:11,334 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 365 predicate places. [2023-11-06 22:32:11,335 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 535 transitions, 13210 flow [2023-11-06 22:32:11,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 168.75) internal successors, (2025), 12 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:11,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:11,335 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:11,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-11-06 22:32:11,335 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:32:11,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:11,336 INFO L85 PathProgramCache]: Analyzing trace with hash -957521880, now seen corresponding path program 24 times [2023-11-06 22:32:11,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:11,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331488200] [2023-11-06 22:32:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:11,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:32:12,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:12,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331488200] [2023-11-06 22:32:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331488200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:12,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:12,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:32:12,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280557119] [2023-11-06 22:32:12,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:12,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:32:12,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:32:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:32:12,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 442 [2023-11-06 22:32:12,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 535 transitions, 13210 flow. Second operand has 12 states, 12 states have (on average 168.75) internal successors, (2025), 12 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:12,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:12,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 442 [2023-11-06 22:32:12,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:15,472 INFO L124 PetriNetUnfolderBase]: 2264/4070 cut-off events. [2023-11-06 22:32:15,472 INFO L125 PetriNetUnfolderBase]: For 77733/77733 co-relation queries the response was YES. [2023-11-06 22:32:15,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35691 conditions, 4070 events. 2264/4070 cut-off events. For 77733/77733 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 26311 event pairs, 143 based on Foata normal form. 1/4071 useless extension candidates. Maximal degree in co-relation 35537. Up to 994 conditions per place. [2023-11-06 22:32:15,545 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 255 selfloop transitions, 348 changer transitions 5/608 dead transitions. [2023-11-06 22:32:15,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 608 transitions, 14891 flow [2023-11-06 22:32:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:32:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:32:15,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3332 transitions. [2023-11-06 22:32:15,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967611336032389 [2023-11-06 22:32:15,552 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3332 transitions. [2023-11-06 22:32:15,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3332 transitions. [2023-11-06 22:32:15,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:15,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3332 transitions. [2023-11-06 22:32:15,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 175.3684210526316) internal successors, (3332), 19 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:15,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 442.0) internal successors, (8840), 20 states have internal predecessors, (8840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:15,570 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 442.0) internal successors, (8840), 20 states have internal predecessors, (8840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:15,571 INFO L175 Difference]: Start difference. First operand has 391 places, 535 transitions, 13210 flow. Second operand 19 states and 3332 transitions. [2023-11-06 22:32:15,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 608 transitions, 14891 flow [2023-11-06 22:32:16,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 608 transitions, 14457 flow, removed 51 selfloop flow, removed 11 redundant places. [2023-11-06 22:32:16,285 INFO L231 Difference]: Finished difference. Result has 401 places, 537 transitions, 13552 flow [2023-11-06 22:32:16,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=12796, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13552, PETRI_PLACES=401, PETRI_TRANSITIONS=537} [2023-11-06 22:32:16,287 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 375 predicate places. [2023-11-06 22:32:16,287 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 537 transitions, 13552 flow [2023-11-06 22:32:16,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 168.75) internal successors, (2025), 12 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:16,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:16,288 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:16,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-11-06 22:32:16,288 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:32:16,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1180932170, now seen corresponding path program 25 times [2023-11-06 22:32:16,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:16,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987374525] [2023-11-06 22:32:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:16,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:32:16,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:16,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987374525] [2023-11-06 22:32:16,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987374525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:16,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:16,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:32:16,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022005219] [2023-11-06 22:32:16,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:16,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:32:16,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:16,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:32:16,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:32:17,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 442 [2023-11-06 22:32:17,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 537 transitions, 13552 flow. Second operand has 13 states, 13 states have (on average 167.6153846153846) internal successors, (2179), 13 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:17,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:17,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 442 [2023-11-06 22:32:17,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:20,667 INFO L124 PetriNetUnfolderBase]: 2327/4190 cut-off events. [2023-11-06 22:32:20,667 INFO L125 PetriNetUnfolderBase]: For 80401/80401 co-relation queries the response was YES. [2023-11-06 22:32:20,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36861 conditions, 4190 events. 2327/4190 cut-off events. For 80401/80401 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 27308 event pairs, 229 based on Foata normal form. 4/4194 useless extension candidates. Maximal degree in co-relation 36704. Up to 1363 conditions per place. [2023-11-06 22:32:20,733 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 386 selfloop transitions, 246 changer transitions 7/639 dead transitions. [2023-11-06 22:32:20,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 639 transitions, 15663 flow [2023-11-06 22:32:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:32:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-06 22:32:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3986 transitions. [2023-11-06 22:32:20,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3920912846744049 [2023-11-06 22:32:20,739 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3986 transitions. [2023-11-06 22:32:20,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3986 transitions. [2023-11-06 22:32:20,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:20,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3986 transitions. [2023-11-06 22:32:20,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 173.30434782608697) internal successors, (3986), 23 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:20,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 442.0) internal successors, (10608), 24 states have internal predecessors, (10608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:20,749 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 442.0) internal successors, (10608), 24 states have internal predecessors, (10608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:20,749 INFO L175 Difference]: Start difference. First operand has 401 places, 537 transitions, 13552 flow. Second operand 23 states and 3986 transitions. [2023-11-06 22:32:20,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 639 transitions, 15663 flow [2023-11-06 22:32:21,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 639 transitions, 15254 flow, removed 7 selfloop flow, removed 14 redundant places. [2023-11-06 22:32:21,497 INFO L231 Difference]: Finished difference. Result has 413 places, 547 transitions, 14057 flow [2023-11-06 22:32:21,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=13167, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=14057, PETRI_PLACES=413, PETRI_TRANSITIONS=547} [2023-11-06 22:32:21,498 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 387 predicate places. [2023-11-06 22:32:21,499 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 547 transitions, 14057 flow [2023-11-06 22:32:21,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 167.6153846153846) internal successors, (2179), 13 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:21,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:21,499 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:21,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-11-06 22:32:21,500 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:32:21,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2079822740, now seen corresponding path program 26 times [2023-11-06 22:32:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:21,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213253413] [2023-11-06 22:32:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:21,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 22:32:22,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:22,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213253413] [2023-11-06 22:32:22,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213253413] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284879691] [2023-11-06 22:32:22,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:32:22,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:22,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:22,686 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:22,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:32:22,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:32:22,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:32:22,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:32:22,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:23,269 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:32:23,269 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 39 [2023-11-06 22:32:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:32:23,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:23,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284879691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:23,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:32:23,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 23 [2023-11-06 22:32:23,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717791768] [2023-11-06 22:32:23,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:23,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:32:23,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:23,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:32:23,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:32:23,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2023-11-06 22:32:23,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 547 transitions, 14057 flow. Second operand has 11 states, 11 states have (on average 169.9090909090909) internal successors, (1869), 11 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:23,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:23,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2023-11-06 22:32:23,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:26,104 INFO L124 PetriNetUnfolderBase]: 2331/4202 cut-off events. [2023-11-06 22:32:26,104 INFO L125 PetriNetUnfolderBase]: For 88401/88401 co-relation queries the response was YES. [2023-11-06 22:32:26,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37893 conditions, 4202 events. 2331/4202 cut-off events. For 88401/88401 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 27354 event pairs, 533 based on Foata normal form. 1/4203 useless extension candidates. Maximal degree in co-relation 37734. Up to 2101 conditions per place. [2023-11-06 22:32:26,178 INFO L140 encePairwiseOnDemand]: 430/442 looper letters, 441 selfloop transitions, 145 changer transitions 5/591 dead transitions. [2023-11-06 22:32:26,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 591 transitions, 15548 flow [2023-11-06 22:32:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:32:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:32:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2278 transitions. [2023-11-06 22:32:26,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39644970414201186 [2023-11-06 22:32:26,183 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2278 transitions. [2023-11-06 22:32:26,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2278 transitions. [2023-11-06 22:32:26,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:26,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2278 transitions. [2023-11-06 22:32:26,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 175.23076923076923) internal successors, (2278), 13 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:26,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 442.0) internal successors, (6188), 14 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:26,190 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 442.0) internal successors, (6188), 14 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:26,191 INFO L175 Difference]: Start difference. First operand has 413 places, 547 transitions, 14057 flow. Second operand 13 states and 2278 transitions. [2023-11-06 22:32:26,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 591 transitions, 15548 flow [2023-11-06 22:32:26,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 591 transitions, 15198 flow, removed 40 selfloop flow, removed 16 redundant places. [2023-11-06 22:32:26,957 INFO L231 Difference]: Finished difference. Result has 409 places, 548 transitions, 14037 flow [2023-11-06 22:32:26,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=13715, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14037, PETRI_PLACES=409, PETRI_TRANSITIONS=548} [2023-11-06 22:32:26,958 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 383 predicate places. [2023-11-06 22:32:26,958 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 548 transitions, 14037 flow [2023-11-06 22:32:26,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.9090909090909) internal successors, (1869), 11 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:26,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:26,959 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:26,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:27,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:27,162 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:32:27,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:27,163 INFO L85 PathProgramCache]: Analyzing trace with hash -44180334, now seen corresponding path program 27 times [2023-11-06 22:32:27,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:27,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104828281] [2023-11-06 22:32:27,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:27,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:32:27,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:27,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104828281] [2023-11-06 22:32:27,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104828281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:27,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:27,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:32:27,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276524968] [2023-11-06 22:32:27,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:27,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:32:27,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:27,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:32:27,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:32:28,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2023-11-06 22:32:28,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 548 transitions, 14037 flow. Second operand has 13 states, 13 states have (on average 169.6153846153846) internal successors, (2205), 13 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:28,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:28,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2023-11-06 22:32:28,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:31,172 INFO L124 PetriNetUnfolderBase]: 2328/4193 cut-off events. [2023-11-06 22:32:31,172 INFO L125 PetriNetUnfolderBase]: For 88448/88448 co-relation queries the response was YES. [2023-11-06 22:32:31,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37569 conditions, 4193 events. 2328/4193 cut-off events. For 88448/88448 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 27394 event pairs, 211 based on Foata normal form. 3/4196 useless extension candidates. Maximal degree in co-relation 37410. Up to 1508 conditions per place. [2023-11-06 22:32:31,261 INFO L140 encePairwiseOnDemand]: 428/442 looper letters, 352 selfloop transitions, 220 changer transitions 15/587 dead transitions. [2023-11-06 22:32:31,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 587 transitions, 15399 flow [2023-11-06 22:32:31,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:32:31,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:32:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2612 transitions. [2023-11-06 22:32:31,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39396681749622925 [2023-11-06 22:32:31,265 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2612 transitions. [2023-11-06 22:32:31,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2612 transitions. [2023-11-06 22:32:31,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:31,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2612 transitions. [2023-11-06 22:32:31,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 174.13333333333333) internal successors, (2612), 15 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:31,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:31,272 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 442.0) internal successors, (7072), 16 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:31,272 INFO L175 Difference]: Start difference. First operand has 409 places, 548 transitions, 14037 flow. Second operand 15 states and 2612 transitions. [2023-11-06 22:32:31,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 587 transitions, 15399 flow [2023-11-06 22:32:32,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 587 transitions, 15118 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-11-06 22:32:32,177 INFO L231 Difference]: Finished difference. Result has 413 places, 542 transitions, 14009 flow [2023-11-06 22:32:32,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=13713, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14009, PETRI_PLACES=413, PETRI_TRANSITIONS=542} [2023-11-06 22:32:32,179 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 387 predicate places. [2023-11-06 22:32:32,179 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 542 transitions, 14009 flow [2023-11-06 22:32:32,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 169.6153846153846) internal successors, (2205), 13 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:32,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:32,180 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:32,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-11-06 22:32:32,181 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:32:32,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:32,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1094887220, now seen corresponding path program 1 times [2023-11-06 22:32:32,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:32,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460100211] [2023-11-06 22:32:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:32,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:32:32,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:32,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460100211] [2023-11-06 22:32:32,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460100211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:32,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632971223] [2023-11-06 22:32:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:32,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:32,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:32,278 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:32,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:32:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:32,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:32:32,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:32:32,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:32:32,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632971223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:32:32,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:32:32,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 22:32:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843627198] [2023-11-06 22:32:32,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:32:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:32,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:32:32,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:32:32,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 442 [2023-11-06 22:32:32,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 542 transitions, 14009 flow. Second operand has 10 states, 10 states have (on average 195.6) internal successors, (1956), 10 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:32,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:32,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 442 [2023-11-06 22:32:32,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:35,087 INFO L124 PetriNetUnfolderBase]: 2785/5165 cut-off events. [2023-11-06 22:32:35,088 INFO L125 PetriNetUnfolderBase]: For 97080/97085 co-relation queries the response was YES. [2023-11-06 22:32:35,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44349 conditions, 5165 events. 2785/5165 cut-off events. For 97080/97085 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 33810 event pairs, 460 based on Foata normal form. 294/5455 useless extension candidates. Maximal degree in co-relation 44188. Up to 1203 conditions per place. [2023-11-06 22:32:35,182 INFO L140 encePairwiseOnDemand]: 437/442 looper letters, 666 selfloop transitions, 74 changer transitions 1/759 dead transitions. [2023-11-06 22:32:35,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 759 transitions, 19374 flow [2023-11-06 22:32:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:32:35,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:32:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1436 transitions. [2023-11-06 22:32:35,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46412411118293473 [2023-11-06 22:32:35,184 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1436 transitions. [2023-11-06 22:32:35,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1436 transitions. [2023-11-06 22:32:35,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:35,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1436 transitions. [2023-11-06 22:32:35,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.14285714285714) internal successors, (1436), 7 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:35,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 442.0) internal successors, (3536), 8 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:35,188 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 442.0) internal successors, (3536), 8 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:35,188 INFO L175 Difference]: Start difference. First operand has 413 places, 542 transitions, 14009 flow. Second operand 7 states and 1436 transitions. [2023-11-06 22:32:35,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 759 transitions, 19374 flow [2023-11-06 22:32:36,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 759 transitions, 18720 flow, removed 21 selfloop flow, removed 14 redundant places. [2023-11-06 22:32:36,126 INFO L231 Difference]: Finished difference. Result has 401 places, 553 transitions, 13946 flow [2023-11-06 22:32:36,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=13582, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13946, PETRI_PLACES=401, PETRI_TRANSITIONS=553} [2023-11-06 22:32:36,127 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 375 predicate places. [2023-11-06 22:32:36,127 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 553 transitions, 13946 flow [2023-11-06 22:32:36,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 195.6) internal successors, (1956), 10 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:36,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:36,128 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:36,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:36,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163ee7ae-8fb5-4923-9d02-8422887adf93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:36,329 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:32:36,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1649984774, now seen corresponding path program 1 times [2023-11-06 22:32:36,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:36,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272430103] [2023-11-06 22:32:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:36,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:32:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:36,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272430103] [2023-11-06 22:32:36,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272430103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:36,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:36,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:32:36,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704776111] [2023-11-06 22:32:36,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:36,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:32:36,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:36,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:32:36,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110