./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro --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 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:07:25,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:07:25,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:07:26,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:07:26,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:07:26,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:07:26,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:07:26,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:07:26,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:07:26,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:07:26,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:07:26,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:07:26,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:07:26,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:07:26,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:07:26,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:07:26,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:07:26,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:07:26,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:07:26,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:07:26,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:07:26,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:07:26,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:07:26,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:07:26,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:07:26,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:07:26,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:07:26,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:07:26,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:07:26,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:07:26,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:07:26,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:07:26,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:07:26,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:07:26,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:07:26,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:07:26,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:07:26,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:07:26,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:07:26,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:07:26,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:07:26,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:07:26,147 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:07:26,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:07:26,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:07:26,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:07:26,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:07:26,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:07:26,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:07:26,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:07:26,151 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:07:26,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:07:26,152 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:07:26,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:07:26,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:07:26,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:07:26,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:07:26,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:07:26,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:07:26,153 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:07:26,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:07:26,153 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:07:26,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:07:26,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:07:26,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:07:26,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:07:26,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:07:26,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:07:26,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:07:26,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:07:26,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:07:26,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:07:26,155 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:07:26,156 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:07:26,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:07:26,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 [2022-11-18 20:07:26,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:07:26,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:07:26,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:07:26,515 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:07:26,519 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:07:26,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2022-11-18 20:07:26,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/data/ea7f76a54/c7fdc2799fd440af8d30b52250f04af7/FLAG84c1b2917 [2022-11-18 20:07:27,198 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:07:27,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2022-11-18 20:07:27,218 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/data/ea7f76a54/c7fdc2799fd440af8d30b52250f04af7/FLAG84c1b2917 [2022-11-18 20:07:27,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/data/ea7f76a54/c7fdc2799fd440af8d30b52250f04af7 [2022-11-18 20:07:27,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:07:27,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:07:27,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:27,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:07:27,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:07:27,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:27" (1/1) ... [2022-11-18 20:07:27,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378f570b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:27, skipping insertion in model container [2022-11-18 20:07:27,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:07:27" (1/1) ... [2022-11-18 20:07:27,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:07:27,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:07:27,737 WARN L234 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_c710116f-a411-42de-be69-d8b5cfa3e6ec/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2022-11-18 20:07:28,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:28,044 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:07:28,061 WARN L234 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_c710116f-a411-42de-be69-d8b5cfa3e6ec/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2022-11-18 20:07:28,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:07:28,203 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:07:28,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28 WrapperNode [2022-11-18 20:07:28,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:07:28,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:07:28,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:07:28,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:07:28,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (1/1) ... [2022-11-18 20:07:28,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (1/1) ... [2022-11-18 20:07:28,294 INFO L138 Inliner]: procedures = 177, calls = 86, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2022-11-18 20:07:28,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:07:28,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:07:28,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:07:28,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:07:28,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (1/1) ... [2022-11-18 20:07:28,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (1/1) ... [2022-11-18 20:07:28,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (1/1) ... [2022-11-18 20:07:28,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (1/1) ... [2022-11-18 20:07:28,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (1/1) ... [2022-11-18 20:07:28,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (1/1) ... [2022-11-18 20:07:28,350 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (1/1) ... [2022-11-18 20:07:28,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (1/1) ... [2022-11-18 20:07:28,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:07:28,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:07:28,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:07:28,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:07:28,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (1/1) ... [2022-11-18 20:07:28,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:07:28,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:28,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:07:28,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c710116f-a411-42de-be69-d8b5cfa3e6ec/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:07:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:07:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:07:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:07:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:07:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:07:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:07:28,458 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 20:07:28,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 20:07:28,459 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 20:07:28,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 20:07:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-18 20:07:28,460 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-18 20:07:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-18 20:07:28,460 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-18 20:07:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:07:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:07:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:07:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:07:28,462 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:07:28,702 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:07:28,704 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:07:29,234 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:07:29,557 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:07:29,557 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:07:29,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:07:29 BoogieIcfgContainer [2022-11-18 20:07:29,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:07:29,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:07:29,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:07:29,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:07:29,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:07:27" (1/3) ... [2022-11-18 20:07:29,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af301a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:07:29, skipping insertion in model container [2022-11-18 20:07:29,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:07:28" (2/3) ... [2022-11-18 20:07:29,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af301a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:07:29, skipping insertion in model container [2022-11-18 20:07:29,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:07:29" (3/3) ... [2022-11-18 20:07:29,574 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2022-11-18 20:07:29,588 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:07:29,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:07:29,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:07:29,600 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:07:29,712 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:07:29,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 151 transitions, 322 flow [2022-11-18 20:07:29,860 INFO L130 PetriNetUnfolder]: 2/147 cut-off events. [2022-11-18 20:07:29,861 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:07:29,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 2/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-11-18 20:07:29,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 151 transitions, 322 flow [2022-11-18 20:07:29,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 131 transitions, 274 flow [2022-11-18 20:07:29,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:07:29,892 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;@2375149, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:07:29,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 20:07:29,962 INFO L130 PetriNetUnfolder]: 1/130 cut-off events. [2022-11-18 20:07:29,963 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:07:29,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:29,964 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:29,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:07:29,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:29,973 INFO L85 PathProgramCache]: Analyzing trace with hash -40968357, now seen corresponding path program 1 times [2022-11-18 20:07:29,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:29,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960278249] [2022-11-18 20:07:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:29,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:30,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:30,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960278249] [2022-11-18 20:07:30,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960278249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:30,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:30,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:07:30,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524571756] [2022-11-18 20:07:30,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:30,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:07:30,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:30,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:07:30,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:07:30,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 151 [2022-11-18 20:07:30,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:30,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:30,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 151 [2022-11-18 20:07:30,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:32,512 INFO L130 PetriNetUnfolder]: 1780/3263 cut-off events. [2022-11-18 20:07:32,512 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-18 20:07:32,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5884 conditions, 3263 events. 1780/3263 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 21148 event pairs, 412 based on Foata normal form. 86/3254 useless extension candidates. Maximal degree in co-relation 5807. Up to 1472 conditions per place. [2022-11-18 20:07:32,540 INFO L137 encePairwiseOnDemand]: 143/151 looper letters, 25 selfloop transitions, 3 changer transitions 49/187 dead transitions. [2022-11-18 20:07:32,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 187 transitions, 543 flow [2022-11-18 20:07:32,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:07:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:07:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1224 transitions. [2022-11-18 20:07:32,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9006622516556292 [2022-11-18 20:07:32,560 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1224 transitions. [2022-11-18 20:07:32,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1224 transitions. [2022-11-18 20:07:32,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:32,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1224 transitions. [2022-11-18 20:07:32,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:32,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:32,584 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:32,586 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 274 flow. Second operand 9 states and 1224 transitions. [2022-11-18 20:07:32,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 187 transitions, 543 flow [2022-11-18 20:07:32,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 187 transitions, 538 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:07:32,595 INFO L231 Difference]: Finished difference. Result has 154 places, 132 transitions, 311 flow [2022-11-18 20:07:32,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=154, PETRI_TRANSITIONS=132} [2022-11-18 20:07:32,601 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 11 predicate places. [2022-11-18 20:07:32,601 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 132 transitions, 311 flow [2022-11-18 20:07:32,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:32,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:32,602 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:32,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:07:32,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:07:32,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:32,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1277468284, now seen corresponding path program 1 times [2022-11-18 20:07:32,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:32,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168151887] [2022-11-18 20:07:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:32,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:33,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:33,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168151887] [2022-11-18 20:07:33,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168151887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:33,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:33,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:07:33,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890479242] [2022-11-18 20:07:33,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:33,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:07:33,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:33,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:07:33,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:07:33,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 151 [2022-11-18 20:07:33,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 132 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:33,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:33,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 151 [2022-11-18 20:07:33,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:34,154 INFO L130 PetriNetUnfolder]: 1158/2314 cut-off events. [2022-11-18 20:07:34,154 INFO L131 PetriNetUnfolder]: For 1549/1559 co-relation queries the response was YES. [2022-11-18 20:07:34,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5154 conditions, 2314 events. 1158/2314 cut-off events. For 1549/1559 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14803 event pairs, 593 based on Foata normal form. 60/2282 useless extension candidates. Maximal degree in co-relation 5072. Up to 801 conditions per place. [2022-11-18 20:07:34,174 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 24 selfloop transitions, 2 changer transitions 37/177 dead transitions. [2022-11-18 20:07:34,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 177 transitions, 551 flow [2022-11-18 20:07:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:07:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:07:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1226 transitions. [2022-11-18 20:07:34,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9021339220014717 [2022-11-18 20:07:34,179 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1226 transitions. [2022-11-18 20:07:34,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1226 transitions. [2022-11-18 20:07:34,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:34,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1226 transitions. [2022-11-18 20:07:34,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.22222222222223) internal successors, (1226), 9 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:34,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:34,187 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:34,187 INFO L175 Difference]: Start difference. First operand has 154 places, 132 transitions, 311 flow. Second operand 9 states and 1226 transitions. [2022-11-18 20:07:34,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 177 transitions, 551 flow [2022-11-18 20:07:34,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 177 transitions, 534 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-18 20:07:34,211 INFO L231 Difference]: Finished difference. Result has 159 places, 132 transitions, 322 flow [2022-11-18 20:07:34,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=322, PETRI_PLACES=159, PETRI_TRANSITIONS=132} [2022-11-18 20:07:34,212 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 16 predicate places. [2022-11-18 20:07:34,213 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 132 transitions, 322 flow [2022-11-18 20:07:34,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:34,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:34,214 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:34,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:07:34,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:07:34,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1104966949, now seen corresponding path program 1 times [2022-11-18 20:07:34,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:34,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552034261] [2022-11-18 20:07:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:34,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:34,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552034261] [2022-11-18 20:07:34,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552034261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:34,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:34,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:07:34,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807215033] [2022-11-18 20:07:34,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:34,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:07:34,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:34,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:07:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:07:34,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 151 [2022-11-18 20:07:34,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 132 transitions, 322 flow. Second operand has 7 states, 7 states have (on average 128.14285714285714) internal successors, (897), 7 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:34,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:34,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 151 [2022-11-18 20:07:34,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:35,808 INFO L130 PetriNetUnfolder]: 1340/2573 cut-off events. [2022-11-18 20:07:35,808 INFO L131 PetriNetUnfolder]: For 2908/2908 co-relation queries the response was YES. [2022-11-18 20:07:35,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6457 conditions, 2573 events. 1340/2573 cut-off events. For 2908/2908 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16617 event pairs, 182 based on Foata normal form. 40/2506 useless extension candidates. Maximal degree in co-relation 6369. Up to 949 conditions per place. [2022-11-18 20:07:35,834 INFO L137 encePairwiseOnDemand]: 142/151 looper letters, 30 selfloop transitions, 5 changer transitions 28/172 dead transitions. [2022-11-18 20:07:35,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 172 transitions, 615 flow [2022-11-18 20:07:35,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:07:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:07:35,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2022-11-18 20:07:35,838 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8949858088930936 [2022-11-18 20:07:35,838 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2022-11-18 20:07:35,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2022-11-18 20:07:35,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:35,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2022-11-18 20:07:35,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:35,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:35,848 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 151.0) internal successors, (1208), 8 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:35,848 INFO L175 Difference]: Start difference. First operand has 159 places, 132 transitions, 322 flow. Second operand 7 states and 946 transitions. [2022-11-18 20:07:35,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 172 transitions, 615 flow [2022-11-18 20:07:35,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 172 transitions, 589 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-11-18 20:07:35,875 INFO L231 Difference]: Finished difference. Result has 155 places, 132 transitions, 329 flow [2022-11-18 20:07:35,876 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=329, PETRI_PLACES=155, PETRI_TRANSITIONS=132} [2022-11-18 20:07:35,878 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 12 predicate places. [2022-11-18 20:07:35,879 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 132 transitions, 329 flow [2022-11-18 20:07:35,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.14285714285714) internal successors, (897), 7 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:35,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:35,882 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:35,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:07:35,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:07:35,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash 614460199, now seen corresponding path program 2 times [2022-11-18 20:07:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:35,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59044628] [2022-11-18 20:07:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:35,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:36,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:36,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59044628] [2022-11-18 20:07:36,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59044628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:36,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:36,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:07:36,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995891415] [2022-11-18 20:07:36,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:36,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:07:36,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:36,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:07:36,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:07:36,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 151 [2022-11-18 20:07:36,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 132 transitions, 329 flow. Second operand has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:36,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:36,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 151 [2022-11-18 20:07:36,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:37,205 INFO L130 PetriNetUnfolder]: 679/1478 cut-off events. [2022-11-18 20:07:37,206 INFO L131 PetriNetUnfolder]: For 1199/1222 co-relation queries the response was YES. [2022-11-18 20:07:37,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 1478 events. 679/1478 cut-off events. For 1199/1222 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8912 event pairs, 251 based on Foata normal form. 32/1445 useless extension candidates. Maximal degree in co-relation 3252. Up to 557 conditions per place. [2022-11-18 20:07:37,219 INFO L137 encePairwiseOnDemand]: 144/151 looper letters, 20 selfloop transitions, 3 changer transitions 31/168 dead transitions. [2022-11-18 20:07:37,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 168 transitions, 533 flow [2022-11-18 20:07:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:07:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:07:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1346 transitions. [2022-11-18 20:07:37,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8913907284768212 [2022-11-18 20:07:37,229 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1346 transitions. [2022-11-18 20:07:37,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1346 transitions. [2022-11-18 20:07:37,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:37,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1346 transitions. [2022-11-18 20:07:37,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.6) internal successors, (1346), 10 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:37,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:37,237 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:37,237 INFO L175 Difference]: Start difference. First operand has 155 places, 132 transitions, 329 flow. Second operand 10 states and 1346 transitions. [2022-11-18 20:07:37,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 168 transitions, 533 flow [2022-11-18 20:07:37,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 168 transitions, 505 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-18 20:07:37,248 INFO L231 Difference]: Finished difference. Result has 162 places, 132 transitions, 333 flow [2022-11-18 20:07:37,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=333, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2022-11-18 20:07:37,250 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 19 predicate places. [2022-11-18 20:07:37,250 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 333 flow [2022-11-18 20:07:37,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:37,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:37,251 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:37,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:07:37,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:07:37,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1085960453, now seen corresponding path program 1 times [2022-11-18 20:07:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:37,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246272976] [2022-11-18 20:07:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:37,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:37,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:37,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246272976] [2022-11-18 20:07:37,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246272976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:37,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:37,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:07:37,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049389546] [2022-11-18 20:07:37,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:37,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:07:37,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:37,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:07:37,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:07:37,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 151 [2022-11-18 20:07:37,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:37,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:37,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 151 [2022-11-18 20:07:37,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:38,635 INFO L130 PetriNetUnfolder]: 1084/2237 cut-off events. [2022-11-18 20:07:38,635 INFO L131 PetriNetUnfolder]: For 2226/2234 co-relation queries the response was YES. [2022-11-18 20:07:38,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 2237 events. 1084/2237 cut-off events. For 2226/2234 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14665 event pairs, 398 based on Foata normal form. 40/2194 useless extension candidates. Maximal degree in co-relation 5219. Up to 656 conditions per place. [2022-11-18 20:07:38,652 INFO L137 encePairwiseOnDemand]: 145/151 looper letters, 30 selfloop transitions, 3 changer transitions 34/177 dead transitions. [2022-11-18 20:07:38,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 177 transitions, 633 flow [2022-11-18 20:07:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:07:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:07:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1211 transitions. [2022-11-18 20:07:38,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8910963944076526 [2022-11-18 20:07:38,656 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1211 transitions. [2022-11-18 20:07:38,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1211 transitions. [2022-11-18 20:07:38,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:38,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1211 transitions. [2022-11-18 20:07:38,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.55555555555554) internal successors, (1211), 9 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:38,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:38,663 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 151.0) internal successors, (1510), 10 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:38,663 INFO L175 Difference]: Start difference. First operand has 162 places, 132 transitions, 333 flow. Second operand 9 states and 1211 transitions. [2022-11-18 20:07:38,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 177 transitions, 633 flow [2022-11-18 20:07:38,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 177 transitions, 579 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-11-18 20:07:38,680 INFO L231 Difference]: Finished difference. Result has 162 places, 132 transitions, 336 flow [2022-11-18 20:07:38,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=336, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2022-11-18 20:07:38,683 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 19 predicate places. [2022-11-18 20:07:38,683 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 336 flow [2022-11-18 20:07:38,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:38,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:38,684 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:38,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:07:38,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:07:38,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:38,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1325441496, now seen corresponding path program 1 times [2022-11-18 20:07:38,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:38,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639276181] [2022-11-18 20:07:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:38,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:39,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:39,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639276181] [2022-11-18 20:07:39,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639276181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:39,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:39,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:07:39,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952861773] [2022-11-18 20:07:39,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:39,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:07:39,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:07:39,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:07:39,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 151 [2022-11-18 20:07:39,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:39,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:39,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 151 [2022-11-18 20:07:39,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:41,826 INFO L130 PetriNetUnfolder]: 5684/9844 cut-off events. [2022-11-18 20:07:41,826 INFO L131 PetriNetUnfolder]: For 2706/2750 co-relation queries the response was YES. [2022-11-18 20:07:41,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19969 conditions, 9844 events. 5684/9844 cut-off events. For 2706/2750 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 73830 event pairs, 245 based on Foata normal form. 0/9557 useless extension candidates. Maximal degree in co-relation 19880. Up to 3567 conditions per place. [2022-11-18 20:07:41,920 INFO L137 encePairwiseOnDemand]: 140/151 looper letters, 35 selfloop transitions, 7 changer transitions 55/206 dead transitions. [2022-11-18 20:07:41,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 206 transitions, 689 flow [2022-11-18 20:07:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:07:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:07:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1349 transitions. [2022-11-18 20:07:41,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8933774834437086 [2022-11-18 20:07:41,925 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1349 transitions. [2022-11-18 20:07:41,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1349 transitions. [2022-11-18 20:07:41,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:41,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1349 transitions. [2022-11-18 20:07:41,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:41,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:41,935 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:41,936 INFO L175 Difference]: Start difference. First operand has 162 places, 132 transitions, 336 flow. Second operand 10 states and 1349 transitions. [2022-11-18 20:07:41,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 206 transitions, 689 flow [2022-11-18 20:07:42,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 206 transitions, 668 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-18 20:07:42,061 INFO L231 Difference]: Finished difference. Result has 164 places, 135 transitions, 381 flow [2022-11-18 20:07:42,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=381, PETRI_PLACES=164, PETRI_TRANSITIONS=135} [2022-11-18 20:07:42,065 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 21 predicate places. [2022-11-18 20:07:42,065 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 135 transitions, 381 flow [2022-11-18 20:07:42,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:42,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:42,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:42,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:07:42,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:07:42,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:42,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1556743541, now seen corresponding path program 1 times [2022-11-18 20:07:42,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:42,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070347321] [2022-11-18 20:07:42,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:42,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:44,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:44,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070347321] [2022-11-18 20:07:44,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070347321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:44,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:44,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:07:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704193136] [2022-11-18 20:07:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:44,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:07:44,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:07:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:07:44,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 151 [2022-11-18 20:07:44,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 135 transitions, 381 flow. Second operand has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:44,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:44,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 151 [2022-11-18 20:07:44,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:46,997 INFO L130 PetriNetUnfolder]: 3705/9329 cut-off events. [2022-11-18 20:07:46,997 INFO L131 PetriNetUnfolder]: For 8468/8989 co-relation queries the response was YES. [2022-11-18 20:07:47,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23388 conditions, 9329 events. 3705/9329 cut-off events. For 8468/8989 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 93386 event pairs, 1546 based on Foata normal form. 87/8869 useless extension candidates. Maximal degree in co-relation 23285. Up to 2292 conditions per place. [2022-11-18 20:07:47,113 INFO L137 encePairwiseOnDemand]: 136/151 looper letters, 54 selfloop transitions, 28 changer transitions 0/184 dead transitions. [2022-11-18 20:07:47,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 184 transitions, 676 flow [2022-11-18 20:07:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:07:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:07:47,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1794 transitions. [2022-11-18 20:07:47,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7920529801324503 [2022-11-18 20:07:47,121 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1794 transitions. [2022-11-18 20:07:47,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1794 transitions. [2022-11-18 20:07:47,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:47,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1794 transitions. [2022-11-18 20:07:47,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 119.6) internal successors, (1794), 15 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:47,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 151.0) internal successors, (2416), 16 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) [2022-11-18 20:07:47,135 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 151.0) internal successors, (2416), 16 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) [2022-11-18 20:07:47,135 INFO L175 Difference]: Start difference. First operand has 164 places, 135 transitions, 381 flow. Second operand 15 states and 1794 transitions. [2022-11-18 20:07:47,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 184 transitions, 676 flow [2022-11-18 20:07:47,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 184 transitions, 661 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 20:07:47,169 INFO L231 Difference]: Finished difference. Result has 175 places, 166 transitions, 581 flow [2022-11-18 20:07:47,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=581, PETRI_PLACES=175, PETRI_TRANSITIONS=166} [2022-11-18 20:07:47,170 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 32 predicate places. [2022-11-18 20:07:47,170 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 166 transitions, 581 flow [2022-11-18 20:07:47,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:47,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:47,172 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:47,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:07:47,172 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:07:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash 317777945, now seen corresponding path program 2 times [2022-11-18 20:07:47,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:47,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530847873] [2022-11-18 20:07:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:47,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:49,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:49,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530847873] [2022-11-18 20:07:49,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530847873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:49,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:49,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:07:49,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712048044] [2022-11-18 20:07:49,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:49,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:07:49,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:49,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:07:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:07:49,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 151 [2022-11-18 20:07:49,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 166 transitions, 581 flow. Second operand has 11 states, 11 states have (on average 118.45454545454545) internal successors, (1303), 11 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:49,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:49,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 151 [2022-11-18 20:07:49,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:53,104 INFO L130 PetriNetUnfolder]: 5486/13516 cut-off events. [2022-11-18 20:07:53,104 INFO L131 PetriNetUnfolder]: For 22105/23458 co-relation queries the response was YES. [2022-11-18 20:07:53,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39529 conditions, 13516 events. 5486/13516 cut-off events. For 22105/23458 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 144347 event pairs, 2262 based on Foata normal form. 133/12637 useless extension candidates. Maximal degree in co-relation 39419. Up to 4498 conditions per place. [2022-11-18 20:07:53,306 INFO L137 encePairwiseOnDemand]: 136/151 looper letters, 100 selfloop transitions, 72 changer transitions 0/276 dead transitions. [2022-11-18 20:07:53,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 276 transitions, 1482 flow [2022-11-18 20:07:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:07:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:07:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2088 transitions. [2022-11-18 20:07:53,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8134008570315543 [2022-11-18 20:07:53,317 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2088 transitions. [2022-11-18 20:07:53,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2088 transitions. [2022-11-18 20:07:53,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:53,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2088 transitions. [2022-11-18 20:07:53,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 122.82352941176471) internal successors, (2088), 17 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:53,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:53,329 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:53,330 INFO L175 Difference]: Start difference. First operand has 175 places, 166 transitions, 581 flow. Second operand 17 states and 2088 transitions. [2022-11-18 20:07:53,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 276 transitions, 1482 flow [2022-11-18 20:07:53,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 276 transitions, 1465 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-18 20:07:53,436 INFO L231 Difference]: Finished difference. Result has 198 places, 245 transitions, 1299 flow [2022-11-18 20:07:53,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1299, PETRI_PLACES=198, PETRI_TRANSITIONS=245} [2022-11-18 20:07:53,439 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 55 predicate places. [2022-11-18 20:07:53,439 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 245 transitions, 1299 flow [2022-11-18 20:07:53,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.45454545454545) internal successors, (1303), 11 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:53,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:53,440 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:53,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:07:53,441 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:07:53,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash -943387495, now seen corresponding path program 3 times [2022-11-18 20:07:53,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:53,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209664232] [2022-11-18 20:07:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:53,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:56,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:56,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209664232] [2022-11-18 20:07:56,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209664232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:56,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:56,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-18 20:07:56,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152038389] [2022-11-18 20:07:56,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:56,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:07:56,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:07:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:07:56,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 151 [2022-11-18 20:07:56,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 245 transitions, 1299 flow. Second operand has 21 states, 21 states have (on average 96.9047619047619) internal successors, (2035), 21 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:56,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:56,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 151 [2022-11-18 20:07:56,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:01,257 INFO L130 PetriNetUnfolder]: 5730/14228 cut-off events. [2022-11-18 20:08:01,258 INFO L131 PetriNetUnfolder]: For 45956/48010 co-relation queries the response was YES. [2022-11-18 20:08:01,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50762 conditions, 14228 events. 5730/14228 cut-off events. For 45956/48010 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 153011 event pairs, 2678 based on Foata normal form. 37/13276 useless extension candidates. Maximal degree in co-relation 50631. Up to 5987 conditions per place. [2022-11-18 20:08:01,419 INFO L137 encePairwiseOnDemand]: 129/151 looper letters, 155 selfloop transitions, 42 changer transitions 34/322 dead transitions. [2022-11-18 20:08:01,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 322 transitions, 2302 flow [2022-11-18 20:08:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:08:01,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 20:08:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2587 transitions. [2022-11-18 20:08:01,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6589403973509934 [2022-11-18 20:08:01,433 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2587 transitions. [2022-11-18 20:08:01,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2587 transitions. [2022-11-18 20:08:01,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:01,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2587 transitions. [2022-11-18 20:08:01,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 99.5) internal successors, (2587), 26 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:01,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 151.0) internal successors, (4077), 27 states have internal predecessors, (4077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:01,461 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 151.0) internal successors, (4077), 27 states have internal predecessors, (4077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:01,469 INFO L175 Difference]: Start difference. First operand has 198 places, 245 transitions, 1299 flow. Second operand 26 states and 2587 transitions. [2022-11-18 20:08:01,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 322 transitions, 2302 flow [2022-11-18 20:08:01,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 322 transitions, 2255 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-11-18 20:08:01,993 INFO L231 Difference]: Finished difference. Result has 232 places, 277 transitions, 1646 flow [2022-11-18 20:08:01,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1646, PETRI_PLACES=232, PETRI_TRANSITIONS=277} [2022-11-18 20:08:01,995 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 89 predicate places. [2022-11-18 20:08:01,995 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 277 transitions, 1646 flow [2022-11-18 20:08:01,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 96.9047619047619) internal successors, (2035), 21 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:01,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:01,997 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:01,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:08:01,997 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:08:01,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1339121561, now seen corresponding path program 4 times [2022-11-18 20:08:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:01,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990341851] [2022-11-18 20:08:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:01,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:05,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:05,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990341851] [2022-11-18 20:08:05,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990341851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:05,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:05,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:08:05,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798690475] [2022-11-18 20:08:05,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:05,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:08:05,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:05,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:08:05,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:08:05,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 151 [2022-11-18 20:08:05,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 277 transitions, 1646 flow. Second operand has 20 states, 20 states have (on average 99.85) internal successors, (1997), 20 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:05,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:05,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 151 [2022-11-18 20:08:05,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:12,341 INFO L130 PetriNetUnfolder]: 7064/17446 cut-off events. [2022-11-18 20:08:12,341 INFO L131 PetriNetUnfolder]: For 88084/90595 co-relation queries the response was YES. [2022-11-18 20:08:12,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68431 conditions, 17446 events. 7064/17446 cut-off events. For 88084/90595 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 192505 event pairs, 2524 based on Foata normal form. 153/16376 useless extension candidates. Maximal degree in co-relation 68284. Up to 6090 conditions per place. [2022-11-18 20:08:12,539 INFO L137 encePairwiseOnDemand]: 128/151 looper letters, 194 selfloop transitions, 122 changer transitions 19/429 dead transitions. [2022-11-18 20:08:12,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 429 transitions, 3747 flow [2022-11-18 20:08:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:08:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 20:08:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3913 transitions. [2022-11-18 20:08:12,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6819449285465319 [2022-11-18 20:08:12,553 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3913 transitions. [2022-11-18 20:08:12,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3913 transitions. [2022-11-18 20:08:12,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:12,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3913 transitions. [2022-11-18 20:08:12,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 102.97368421052632) internal successors, (3913), 38 states have internal predecessors, (3913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:12,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 151.0) internal successors, (5889), 39 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:12,577 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 151.0) internal successors, (5889), 39 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:12,578 INFO L175 Difference]: Start difference. First operand has 232 places, 277 transitions, 1646 flow. Second operand 38 states and 3913 transitions. [2022-11-18 20:08:12,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 429 transitions, 3747 flow [2022-11-18 20:08:13,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 429 transitions, 3634 flow, removed 48 selfloop flow, removed 12 redundant places. [2022-11-18 20:08:13,234 INFO L231 Difference]: Finished difference. Result has 264 places, 377 transitions, 3062 flow [2022-11-18 20:08:13,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3062, PETRI_PLACES=264, PETRI_TRANSITIONS=377} [2022-11-18 20:08:13,235 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 121 predicate places. [2022-11-18 20:08:13,235 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 377 transitions, 3062 flow [2022-11-18 20:08:13,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 99.85) internal successors, (1997), 20 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:13,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:13,236 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:13,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:08:13,237 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:08:13,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:13,237 INFO L85 PathProgramCache]: Analyzing trace with hash 511173305, now seen corresponding path program 1 times [2022-11-18 20:08:13,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:13,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642178967] [2022-11-18 20:08:13,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:13,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:13,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:13,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642178967] [2022-11-18 20:08:13,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642178967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:13,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:13,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:08:13,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192190531] [2022-11-18 20:08:13,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:13,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:08:13,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:13,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:08:13,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:08:13,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 151 [2022-11-18 20:08:13,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 377 transitions, 3062 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:13,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:13,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 151 [2022-11-18 20:08:13,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:19,035 INFO L130 PetriNetUnfolder]: 10181/20549 cut-off events. [2022-11-18 20:08:19,036 INFO L131 PetriNetUnfolder]: For 133113/135593 co-relation queries the response was YES. [2022-11-18 20:08:19,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91134 conditions, 20549 events. 10181/20549 cut-off events. For 133113/135593 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 192728 event pairs, 249 based on Foata normal form. 730/20951 useless extension candidates. Maximal degree in co-relation 90994. Up to 6290 conditions per place. [2022-11-18 20:08:19,210 INFO L137 encePairwiseOnDemand]: 141/151 looper letters, 236 selfloop transitions, 21 changer transitions 195/620 dead transitions. [2022-11-18 20:08:19,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 620 transitions, 6226 flow [2022-11-18 20:08:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:08:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:08:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2022-11-18 20:08:19,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8920529801324504 [2022-11-18 20:08:19,213 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2022-11-18 20:08:19,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2022-11-18 20:08:19,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:19,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2022-11-18 20:08:19,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:19,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:19,219 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 151.0) internal successors, (1661), 11 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:19,219 INFO L175 Difference]: Start difference. First operand has 264 places, 377 transitions, 3062 flow. Second operand 10 states and 1347 transitions. [2022-11-18 20:08:19,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 620 transitions, 6226 flow [2022-11-18 20:08:19,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 620 transitions, 5555 flow, removed 311 selfloop flow, removed 15 redundant places. [2022-11-18 20:08:19,697 INFO L231 Difference]: Finished difference. Result has 259 places, 267 transitions, 1806 flow [2022-11-18 20:08:19,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1806, PETRI_PLACES=259, PETRI_TRANSITIONS=267} [2022-11-18 20:08:19,698 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 116 predicate places. [2022-11-18 20:08:19,699 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 267 transitions, 1806 flow [2022-11-18 20:08:19,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:19,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:19,699 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:19,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:08:19,700 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:08:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash -685551046, now seen corresponding path program 1 times [2022-11-18 20:08:19,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:19,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103747599] [2022-11-18 20:08:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:19,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:24,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:24,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103747599] [2022-11-18 20:08:24,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103747599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:24,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:24,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-18 20:08:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763317863] [2022-11-18 20:08:24,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:24,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:08:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:24,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:08:24,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:08:24,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 151 [2022-11-18 20:08:24,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 267 transitions, 1806 flow. Second operand has 25 states, 25 states have (on average 93.76) internal successors, (2344), 25 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:24,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:24,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 151 [2022-11-18 20:08:24,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:29,153 INFO L130 PetriNetUnfolder]: 3976/11866 cut-off events. [2022-11-18 20:08:29,154 INFO L131 PetriNetUnfolder]: For 79688/83111 co-relation queries the response was YES. [2022-11-18 20:08:29,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51721 conditions, 11866 events. 3976/11866 cut-off events. For 79688/83111 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 136961 event pairs, 763 based on Foata normal form. 192/11587 useless extension candidates. Maximal degree in co-relation 51560. Up to 3922 conditions per place. [2022-11-18 20:08:29,286 INFO L137 encePairwiseOnDemand]: 127/151 looper letters, 152 selfloop transitions, 96 changer transitions 0/351 dead transitions. [2022-11-18 20:08:29,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 351 transitions, 3343 flow [2022-11-18 20:08:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:08:29,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 20:08:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3266 transitions. [2022-11-18 20:08:29,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6361511492014024 [2022-11-18 20:08:29,292 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3266 transitions. [2022-11-18 20:08:29,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3266 transitions. [2022-11-18 20:08:29,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:29,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3266 transitions. [2022-11-18 20:08:29,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 96.05882352941177) internal successors, (3266), 34 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:29,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 151.0) internal successors, (5285), 35 states have internal predecessors, (5285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:29,310 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 151.0) internal successors, (5285), 35 states have internal predecessors, (5285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:29,311 INFO L175 Difference]: Start difference. First operand has 259 places, 267 transitions, 1806 flow. Second operand 34 states and 3266 transitions. [2022-11-18 20:08:29,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 351 transitions, 3343 flow [2022-11-18 20:08:30,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 351 transitions, 3104 flow, removed 116 selfloop flow, removed 20 redundant places. [2022-11-18 20:08:30,092 INFO L231 Difference]: Finished difference. Result has 259 places, 319 transitions, 2618 flow [2022-11-18 20:08:30,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2618, PETRI_PLACES=259, PETRI_TRANSITIONS=319} [2022-11-18 20:08:30,093 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 116 predicate places. [2022-11-18 20:08:30,093 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 319 transitions, 2618 flow [2022-11-18 20:08:30,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 93.76) internal successors, (2344), 25 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:30,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:30,094 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:30,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:08:30,094 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:08:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:30,095 INFO L85 PathProgramCache]: Analyzing trace with hash 213626932, now seen corresponding path program 2 times [2022-11-18 20:08:30,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:30,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587655013] [2022-11-18 20:08:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:30,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:32,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:32,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587655013] [2022-11-18 20:08:32,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587655013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:32,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:32,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:08:32,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382164737] [2022-11-18 20:08:32,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:32,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:08:32,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:32,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:08:32,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:08:32,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 151 [2022-11-18 20:08:32,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 319 transitions, 2618 flow. Second operand has 16 states, 16 states have (on average 113.0625) internal successors, (1809), 16 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:32,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:32,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 151 [2022-11-18 20:08:32,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:36,581 INFO L130 PetriNetUnfolder]: 5258/15305 cut-off events. [2022-11-18 20:08:36,581 INFO L131 PetriNetUnfolder]: For 89961/91530 co-relation queries the response was YES. [2022-11-18 20:08:36,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61889 conditions, 15305 events. 5258/15305 cut-off events. For 89961/91530 co-relation queries the response was YES. Maximal size of possible extension queue 1218. Compared 184134 event pairs, 970 based on Foata normal form. 361/15005 useless extension candidates. Maximal degree in co-relation 61732. Up to 3556 conditions per place. [2022-11-18 20:08:36,743 INFO L137 encePairwiseOnDemand]: 133/151 looper letters, 167 selfloop transitions, 78 changer transitions 15/381 dead transitions. [2022-11-18 20:08:36,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 381 transitions, 3888 flow [2022-11-18 20:08:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:08:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:08:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1753 transitions. [2022-11-18 20:08:36,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7739514348785872 [2022-11-18 20:08:36,747 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1753 transitions. [2022-11-18 20:08:36,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1753 transitions. [2022-11-18 20:08:36,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:36,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1753 transitions. [2022-11-18 20:08:36,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.86666666666666) internal successors, (1753), 15 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:36,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 151.0) internal successors, (2416), 16 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) [2022-11-18 20:08:36,755 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 151.0) internal successors, (2416), 16 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) [2022-11-18 20:08:36,756 INFO L175 Difference]: Start difference. First operand has 259 places, 319 transitions, 2618 flow. Second operand 15 states and 1753 transitions. [2022-11-18 20:08:36,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 381 transitions, 3888 flow [2022-11-18 20:08:37,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 381 transitions, 3630 flow, removed 113 selfloop flow, removed 15 redundant places. [2022-11-18 20:08:37,516 INFO L231 Difference]: Finished difference. Result has 264 places, 334 transitions, 2832 flow [2022-11-18 20:08:37,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2832, PETRI_PLACES=264, PETRI_TRANSITIONS=334} [2022-11-18 20:08:37,517 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 121 predicate places. [2022-11-18 20:08:37,517 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 334 transitions, 2832 flow [2022-11-18 20:08:37,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 113.0625) internal successors, (1809), 16 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:37,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:37,518 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:37,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:08:37,519 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:08:37,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1682629330, now seen corresponding path program 3 times [2022-11-18 20:08:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:37,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927313302] [2022-11-18 20:08:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:40,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:40,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927313302] [2022-11-18 20:08:40,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927313302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:40,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:40,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 20:08:40,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580783542] [2022-11-18 20:08:40,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:40,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:08:40,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:40,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:08:40,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:08:40,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 151 [2022-11-18 20:08:40,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 334 transitions, 2832 flow. Second operand has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:40,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:40,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 151 [2022-11-18 20:08:40,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:45,182 INFO L130 PetriNetUnfolder]: 6318/18406 cut-off events. [2022-11-18 20:08:45,182 INFO L131 PetriNetUnfolder]: For 112472/114465 co-relation queries the response was YES. [2022-11-18 20:08:45,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75550 conditions, 18406 events. 6318/18406 cut-off events. For 112472/114465 co-relation queries the response was YES. Maximal size of possible extension queue 1407. Compared 227437 event pairs, 1316 based on Foata normal form. 306/17902 useless extension candidates. Maximal degree in co-relation 75393. Up to 4402 conditions per place. [2022-11-18 20:08:45,379 INFO L137 encePairwiseOnDemand]: 136/151 looper letters, 148 selfloop transitions, 88 changer transitions 47/405 dead transitions. [2022-11-18 20:08:45,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 405 transitions, 4296 flow [2022-11-18 20:08:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:08:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:08:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1984 transitions. [2022-11-18 20:08:45,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7728866380989482 [2022-11-18 20:08:45,383 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1984 transitions. [2022-11-18 20:08:45,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1984 transitions. [2022-11-18 20:08:45,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:45,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1984 transitions. [2022-11-18 20:08:45,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 116.70588235294117) internal successors, (1984), 17 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:45,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:45,392 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 151.0) internal successors, (2718), 18 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:45,393 INFO L175 Difference]: Start difference. First operand has 264 places, 334 transitions, 2832 flow. Second operand 17 states and 1984 transitions. [2022-11-18 20:08:45,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 405 transitions, 4296 flow [2022-11-18 20:08:46,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 405 transitions, 4171 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-18 20:08:46,583 INFO L231 Difference]: Finished difference. Result has 280 places, 338 transitions, 3099 flow [2022-11-18 20:08:46,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3099, PETRI_PLACES=280, PETRI_TRANSITIONS=338} [2022-11-18 20:08:46,585 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 137 predicate places. [2022-11-18 20:08:46,586 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 338 transitions, 3099 flow [2022-11-18 20:08:46,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 114.0) internal successors, (1824), 16 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:46,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:08:46,587 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:46,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:08:46,587 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:08:46,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1998335592, now seen corresponding path program 4 times [2022-11-18 20:08:46,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:46,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330468728] [2022-11-18 20:08:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:46,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:08:50,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:50,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330468728] [2022-11-18 20:08:50,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330468728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:08:50,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:08:50,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:08:50,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668313255] [2022-11-18 20:08:50,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:08:50,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:08:50,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:50,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:08:50,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:08:50,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 151 [2022-11-18 20:08:50,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 338 transitions, 3099 flow. Second operand has 24 states, 24 states have (on average 95.75) internal successors, (2298), 24 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:50,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:08:50,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 151 [2022-11-18 20:08:50,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand