./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- 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-4e7fbc6 [2022-11-23 03:02:52,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:02:52,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:02:52,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:02:52,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:02:52,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:02:52,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:02:52,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:02:52,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:02:52,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:02:52,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:02:52,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:02:52,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:02:52,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:02:52,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:02:52,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:02:52,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:02:52,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:02:52,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:02:52,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:02:52,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:02:52,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:02:52,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:02:52,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:02:52,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:02:52,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:02:52,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:02:52,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:02:52,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:02:52,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:02:52,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:02:52,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:02:52,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:02:52,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:02:52,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:02:52,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:02:52,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:02:52,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:02:52,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:02:52,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:02:52,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:02:52,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-23 03:02:52,483 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:02:52,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:02:52,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:02:52,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:02:52,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:02:52,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:02:52,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:02:52,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:02:52,488 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:02:52,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:02:52,489 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:02:52,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:02:52,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:02:52,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:02:52,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:02:52,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:02:52,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:02:52,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:02:52,492 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-23 03:02:52,492 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:02:52,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:02:52,493 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:02:52,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:02:52,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:02:52,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:02:52,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:02:52,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:02:52,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:02:52,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:02:52,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:02:52,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:02:52,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:02:52,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:02:52,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:02:52,497 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:02:52,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:02:52,498 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2022-11-23 03:02:52,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:02:52,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:02:52,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:02:52,845 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:02:52,845 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:02:52,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2022-11-23 03:02:55,956 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:02:56,276 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:02:56,277 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2022-11-23 03:02:56,298 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/data/d1b998d4d/d24b1068b275466db6b5c1ac442d64e2/FLAG1b689d48c [2022-11-23 03:02:56,325 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/data/d1b998d4d/d24b1068b275466db6b5c1ac442d64e2 [2022-11-23 03:02:56,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:02:56,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:02:56,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:02:56,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:02:56,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:02:56,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:56" (1/1) ... [2022-11-23 03:02:56,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3efa5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:56, skipping insertion in model container [2022-11-23 03:02:56,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:56" (1/1) ... [2022-11-23 03:02:56,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:02:56,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:02:56,986 WARN L237 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_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2022-11-23 03:02:57,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:02:57,073 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:02:57,128 WARN L237 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_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2022-11-23 03:02:57,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:02:57,248 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:02:57,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57 WrapperNode [2022-11-23 03:02:57,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:02:57,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:02:57,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:02:57,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:02:57,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (1/1) ... [2022-11-23 03:02:57,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (1/1) ... [2022-11-23 03:02:57,355 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 339 [2022-11-23 03:02:57,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:02:57,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:02:57,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:02:57,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:02:57,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (1/1) ... [2022-11-23 03:02:57,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (1/1) ... [2022-11-23 03:02:57,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (1/1) ... [2022-11-23 03:02:57,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (1/1) ... [2022-11-23 03:02:57,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (1/1) ... [2022-11-23 03:02:57,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (1/1) ... [2022-11-23 03:02:57,427 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (1/1) ... [2022-11-23 03:02:57,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (1/1) ... [2022-11-23 03:02:57,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:02:57,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:02:57,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:02:57,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:02:57,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (1/1) ... [2022-11-23 03:02:57,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:02:57,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:02:57,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:02:57,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:02:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:02:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:02:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:02:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:02:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 03:02:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:02:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 03:02:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 03:02:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:02:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:02:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:02:57,545 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:02:57,770 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:02:57,782 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:02:58,617 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:02:58,630 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:02:58,631 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-11-23 03:02:58,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:58 BoogieIcfgContainer [2022-11-23 03:02:58,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:02:58,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:02:58,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:02:58,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:02:58,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:02:56" (1/3) ... [2022-11-23 03:02:58,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225d03a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:58, skipping insertion in model container [2022-11-23 03:02:58,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:57" (2/3) ... [2022-11-23 03:02:58,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225d03a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:58, skipping insertion in model container [2022-11-23 03:02:58,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:58" (3/3) ... [2022-11-23 03:02:58,646 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2022-11-23 03:02:58,658 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:02:58,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:02:58,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-23 03:02:58,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:02:58,853 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-23 03:02:58,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 360 transitions, 728 flow [2022-11-23 03:02:59,108 INFO L130 PetriNetUnfolder]: 73/571 cut-off events. [2022-11-23 03:02:59,108 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:02:59,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 571 events. 73/571 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3106 event pairs, 0 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2022-11-23 03:02:59,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 360 transitions, 728 flow [2022-11-23 03:02:59,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 360 transitions, 728 flow [2022-11-23 03:02:59,150 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:02:59,179 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 360 transitions, 728 flow [2022-11-23 03:02:59,183 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 360 transitions, 728 flow [2022-11-23 03:02:59,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 360 transitions, 728 flow [2022-11-23 03:02:59,335 INFO L130 PetriNetUnfolder]: 73/571 cut-off events. [2022-11-23 03:02:59,335 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:02:59,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 571 events. 73/571 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3106 event pairs, 0 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2022-11-23 03:02:59,371 INFO L119 LiptonReduction]: Number of co-enabled transitions 45136 [2022-11-23 03:03:09,678 INFO L134 LiptonReduction]: Checked pairs total: 380481 [2022-11-23 03:03:09,679 INFO L136 LiptonReduction]: Total number of compositions: 299 [2022-11-23 03:03:09,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:03:09,725 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;@2cdaaba6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:03:09,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-23 03:03:09,734 INFO L130 PetriNetUnfolder]: 18/56 cut-off events. [2022-11-23 03:03:09,735 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:03:09,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:09,737 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-23 03:03:09,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-23 03:03:09,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:09,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1977673850, now seen corresponding path program 1 times [2022-11-23 03:03:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:09,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126050956] [2022-11-23 03:03:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:09,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:03:10,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:10,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126050956] [2022-11-23 03:03:10,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126050956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:03:10,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:03:10,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:03:10,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759271930] [2022-11-23 03:03:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:03:10,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:03:10,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:10,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:03:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:03:10,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 659 [2022-11-23 03:03:10,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 194 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:10,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:10,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 659 [2022-11-23 03:03:10,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:10,756 INFO L130 PetriNetUnfolder]: 823/2962 cut-off events. [2022-11-23 03:03:10,757 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:03:10,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2962 events. 823/2962 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 24238 event pairs, 684 based on Foata normal form. 332/3028 useless extension candidates. Maximal degree in co-relation 4338. Up to 1534 conditions per place. [2022-11-23 03:03:10,774 INFO L137 encePairwiseOnDemand]: 624/659 looper letters, 63 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2022-11-23 03:03:10,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 163 transitions, 464 flow [2022-11-23 03:03:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:03:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:03:10,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1037 transitions. [2022-11-23 03:03:10,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5245321193727871 [2022-11-23 03:03:10,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1037 transitions. [2022-11-23 03:03:10,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1037 transitions. [2022-11-23 03:03:10,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:10,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1037 transitions. [2022-11-23 03:03:10,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:10,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:10,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:10,826 INFO L175 Difference]: Start difference. First operand has 158 places, 194 transitions, 396 flow. Second operand 3 states and 1037 transitions. [2022-11-23 03:03:10,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 163 transitions, 464 flow [2022-11-23 03:03:10,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:03:10,837 INFO L231 Difference]: Finished difference. Result has 161 places, 163 transitions, 344 flow [2022-11-23 03:03:10,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=161, PETRI_TRANSITIONS=163} [2022-11-23 03:03:10,844 INFO L288 CegarLoopForPetriNet]: 158 programPoint places, 3 predicate places. [2022-11-23 03:03:10,845 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 163 transitions, 344 flow [2022-11-23 03:03:10,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:10,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:10,846 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 03:03:10,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:03:10,847 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-23 03:03:10,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:10,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2063761823, now seen corresponding path program 1 times [2022-11-23 03:03:10,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:10,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464486327] [2022-11-23 03:03:10,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:10,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:03:10,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:10,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464486327] [2022-11-23 03:03:10,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464486327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:03:10,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095429542] [2022-11-23 03:03:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:10,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:03:10,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:03:10,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:03:11,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:03:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:11,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:03:11,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:03:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:03:11,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:03:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:03:11,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095429542] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:03:11,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:03:11,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 03:03:11,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584007847] [2022-11-23 03:03:11,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:03:11,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:03:11,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:11,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:03:11,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:03:11,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 659 [2022-11-23 03:03:11,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 163 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 313.57142857142856) internal successors, (2195), 7 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:11,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:11,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 659 [2022-11-23 03:03:11,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:11,756 INFO L130 PetriNetUnfolder]: 823/2965 cut-off events. [2022-11-23 03:03:11,756 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:03:11,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 2965 events. 823/2965 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 24346 event pairs, 684 based on Foata normal form. 0/2699 useless extension candidates. Maximal degree in co-relation 4507. Up to 1534 conditions per place. [2022-11-23 03:03:11,775 INFO L137 encePairwiseOnDemand]: 656/659 looper letters, 63 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2022-11-23 03:03:11,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 492 flow [2022-11-23 03:03:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:03:11,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:03:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1943 transitions. [2022-11-23 03:03:11,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4914011127971674 [2022-11-23 03:03:11,783 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1943 transitions. [2022-11-23 03:03:11,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1943 transitions. [2022-11-23 03:03:11,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:11,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1943 transitions. [2022-11-23 03:03:11,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 323.8333333333333) internal successors, (1943), 6 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:11,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:11,802 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:11,803 INFO L175 Difference]: Start difference. First operand has 161 places, 163 transitions, 344 flow. Second operand 6 states and 1943 transitions. [2022-11-23 03:03:11,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 492 flow [2022-11-23 03:03:11,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 166 transitions, 488 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-23 03:03:11,812 INFO L231 Difference]: Finished difference. Result has 168 places, 166 transitions, 376 flow [2022-11-23 03:03:11,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=168, PETRI_TRANSITIONS=166} [2022-11-23 03:03:11,814 INFO L288 CegarLoopForPetriNet]: 158 programPoint places, 10 predicate places. [2022-11-23 03:03:11,815 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 166 transitions, 376 flow [2022-11-23 03:03:11,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.57142857142856) internal successors, (2195), 7 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:11,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:11,817 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-23 03:03:11,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 03:03:12,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:03:12,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-23 03:03:12,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:12,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2115013050, now seen corresponding path program 2 times [2022-11-23 03:03:12,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:12,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018276355] [2022-11-23 03:03:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:12,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:03:12,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:12,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018276355] [2022-11-23 03:03:12,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018276355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:03:12,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394430276] [2022-11-23 03:03:12,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:03:12,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:03:12,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:03:12,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:03:12,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:03:12,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:03:12,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:03:12,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:03:12,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:03:12,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:03:12,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:03:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:03:12,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394430276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:03:12,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:03:12,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 03:03:12,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75144960] [2022-11-23 03:03:12,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:03:12,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:03:12,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:12,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:03:12,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:03:12,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 659 [2022-11-23 03:03:12,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 166 transitions, 376 flow. Second operand has 13 states, 13 states have (on average 313.3076923076923) internal successors, (4073), 13 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:12,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:12,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 659 [2022-11-23 03:03:12,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:13,126 INFO L130 PetriNetUnfolder]: 823/2971 cut-off events. [2022-11-23 03:03:13,126 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-23 03:03:13,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4556 conditions, 2971 events. 823/2971 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 24226 event pairs, 684 based on Foata normal form. 6/2712 useless extension candidates. Maximal degree in co-relation 4498. Up to 1534 conditions per place. [2022-11-23 03:03:13,148 INFO L137 encePairwiseOnDemand]: 656/659 looper letters, 63 selfloop transitions, 11 changer transitions 0/172 dead transitions. [2022-11-23 03:03:13,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 172 transitions, 560 flow [2022-11-23 03:03:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:03:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 03:03:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3824 transitions. [2022-11-23 03:03:13,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48356095093576124 [2022-11-23 03:03:13,160 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3824 transitions. [2022-11-23 03:03:13,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3824 transitions. [2022-11-23 03:03:13,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:13,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3824 transitions. [2022-11-23 03:03:13,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 318.6666666666667) internal successors, (3824), 12 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:13,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 659.0) internal successors, (8567), 13 states have internal predecessors, (8567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:13,197 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 659.0) internal successors, (8567), 13 states have internal predecessors, (8567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:13,198 INFO L175 Difference]: Start difference. First operand has 168 places, 166 transitions, 376 flow. Second operand 12 states and 3824 transitions. [2022-11-23 03:03:13,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 172 transitions, 560 flow [2022-11-23 03:03:13,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 172 transitions, 546 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 03:03:13,204 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 446 flow [2022-11-23 03:03:13,205 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=446, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2022-11-23 03:03:13,206 INFO L288 CegarLoopForPetriNet]: 158 programPoint places, 26 predicate places. [2022-11-23 03:03:13,206 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 446 flow [2022-11-23 03:03:13,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 313.3076923076923) internal successors, (4073), 13 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:13,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:13,208 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-23 03:03:13,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:03:13,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:03:13,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-23 03:03:13,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:13,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1029566566, now seen corresponding path program 3 times [2022-11-23 03:03:13,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:13,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023408328] [2022-11-23 03:03:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:13,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:03:13,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:03:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:03:13,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 03:03:13,550 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:03:13,551 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-23 03:03:13,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-23 03:03:13,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-23 03:03:13,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-23 03:03:13,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-23 03:03:13,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-23 03:03:13,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-23 03:03:13,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-23 03:03:13,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-23 03:03:13,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-23 03:03:13,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-23 03:03:13,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-23 03:03:13,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-23 03:03:13,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-23 03:03:13,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-23 03:03:13,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-23 03:03:13,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-23 03:03:13,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-23 03:03:13,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-23 03:03:13,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-23 03:03:13,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-23 03:03:13,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-23 03:03:13,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:03:13,572 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-23 03:03:13,575 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 03:03:13,575 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 03:03:13,646 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 03:03:13,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 466 transitions, 950 flow [2022-11-23 03:03:13,867 INFO L130 PetriNetUnfolder]: 118/919 cut-off events. [2022-11-23 03:03:13,868 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 03:03:13,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 919 events. 118/919 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5774 event pairs, 0 based on Foata normal form. 0/753 useless extension candidates. Maximal degree in co-relation 573. Up to 12 conditions per place. [2022-11-23 03:03:13,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 466 transitions, 950 flow [2022-11-23 03:03:13,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 466 transitions, 950 flow [2022-11-23 03:03:13,900 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:03:13,900 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 466 transitions, 950 flow [2022-11-23 03:03:13,900 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 466 transitions, 950 flow [2022-11-23 03:03:13,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 466 transitions, 950 flow [2022-11-23 03:03:14,113 INFO L130 PetriNetUnfolder]: 118/919 cut-off events. [2022-11-23 03:03:14,114 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 03:03:14,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 919 events. 118/919 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5774 event pairs, 0 based on Foata normal form. 0/753 useless extension candidates. Maximal degree in co-relation 573. Up to 12 conditions per place. [2022-11-23 03:03:14,179 INFO L119 LiptonReduction]: Number of co-enabled transitions 114192 [2022-11-23 03:03:28,670 INFO L134 LiptonReduction]: Checked pairs total: 916396 [2022-11-23 03:03:28,671 INFO L136 LiptonReduction]: Total number of compositions: 385 [2022-11-23 03:03:28,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:03:28,673 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;@2cdaaba6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:03:28,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-23 03:03:28,684 INFO L130 PetriNetUnfolder]: 42/135 cut-off events. [2022-11-23 03:03:28,684 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:03:28,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:28,685 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:03:28,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-23 03:03:28,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:28,686 INFO L85 PathProgramCache]: Analyzing trace with hash 243236418, now seen corresponding path program 1 times [2022-11-23 03:03:28,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:28,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795936670] [2022-11-23 03:03:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:28,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:28,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:03:28,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:28,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795936670] [2022-11-23 03:03:28,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795936670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:03:28,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:03:28,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:03:28,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402646420] [2022-11-23 03:03:28,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:03:28,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:03:28,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:28,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:03:28,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:03:28,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 851 [2022-11-23 03:03:28,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 258 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 406.0) internal successors, (1218), 3 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:28,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:28,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 851 [2022-11-23 03:03:28,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:37,546 INFO L130 PetriNetUnfolder]: 31287/72252 cut-off events. [2022-11-23 03:03:37,546 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2022-11-23 03:03:37,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117162 conditions, 72252 events. 31287/72252 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 840342 event pairs, 27108 based on Foata normal form. 8733/73963 useless extension candidates. Maximal degree in co-relation 52746. Up to 44791 conditions per place. [2022-11-23 03:03:38,017 INFO L137 encePairwiseOnDemand]: 806/851 looper letters, 84 selfloop transitions, 2 changer transitions 0/217 dead transitions. [2022-11-23 03:03:38,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 217 transitions, 624 flow [2022-11-23 03:03:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:03:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:03:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1341 transitions. [2022-11-23 03:03:38,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5252643948296122 [2022-11-23 03:03:38,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1341 transitions. [2022-11-23 03:03:38,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1341 transitions. [2022-11-23 03:03:38,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:38,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1341 transitions. [2022-11-23 03:03:38,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 447.0) internal successors, (1341), 3 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:38,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:38,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:38,034 INFO L175 Difference]: Start difference. First operand has 211 places, 258 transitions, 534 flow. Second operand 3 states and 1341 transitions. [2022-11-23 03:03:38,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 217 transitions, 624 flow [2022-11-23 03:03:38,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 217 transitions, 624 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:03:38,042 INFO L231 Difference]: Finished difference. Result has 214 places, 217 transitions, 462 flow [2022-11-23 03:03:38,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=214, PETRI_TRANSITIONS=217} [2022-11-23 03:03:38,045 INFO L288 CegarLoopForPetriNet]: 211 programPoint places, 3 predicate places. [2022-11-23 03:03:38,045 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 217 transitions, 462 flow [2022-11-23 03:03:38,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.0) internal successors, (1218), 3 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:38,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:38,047 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 03:03:38,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:03:38,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-23 03:03:38,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:38,048 INFO L85 PathProgramCache]: Analyzing trace with hash 394556374, now seen corresponding path program 1 times [2022-11-23 03:03:38,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:38,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187950812] [2022-11-23 03:03:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:38,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 03:03:38,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:38,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187950812] [2022-11-23 03:03:38,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187950812] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:03:38,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322035412] [2022-11-23 03:03:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:38,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:03:38,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:03:38,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:03:38,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:03:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:38,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:03:38,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:03:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 03:03:38,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:03:38,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 03:03:38,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322035412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:03:38,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:03:38,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-23 03:03:38,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977379] [2022-11-23 03:03:38,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:03:38,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:03:38,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:38,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:03:38,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:03:38,320 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 851 [2022-11-23 03:03:38,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 217 transitions, 462 flow. Second operand has 7 states, 7 states have (on average 404.7142857142857) internal successors, (2833), 7 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:38,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:38,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 851 [2022-11-23 03:03:38,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:46,087 INFO L130 PetriNetUnfolder]: 31287/72255 cut-off events. [2022-11-23 03:03:46,087 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2022-11-23 03:03:46,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117178 conditions, 72255 events. 31287/72255 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 1683. Compared 839940 event pairs, 27108 based on Foata normal form. 0/65233 useless extension candidates. Maximal degree in co-relation 117165. Up to 44791 conditions per place. [2022-11-23 03:03:46,671 INFO L137 encePairwiseOnDemand]: 848/851 looper letters, 84 selfloop transitions, 5 changer transitions 0/220 dead transitions. [2022-11-23 03:03:46,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 220 transitions, 652 flow [2022-11-23 03:03:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:03:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:03:46,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2510 transitions. [2022-11-23 03:03:46,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49157853505679594 [2022-11-23 03:03:46,680 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2510 transitions. [2022-11-23 03:03:46,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2510 transitions. [2022-11-23 03:03:46,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:46,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2510 transitions. [2022-11-23 03:03:46,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 418.3333333333333) internal successors, (2510), 6 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:46,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 851.0) internal successors, (5957), 7 states have internal predecessors, (5957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:46,704 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 851.0) internal successors, (5957), 7 states have internal predecessors, (5957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:46,704 INFO L175 Difference]: Start difference. First operand has 214 places, 217 transitions, 462 flow. Second operand 6 states and 2510 transitions. [2022-11-23 03:03:46,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 220 transitions, 652 flow [2022-11-23 03:03:46,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 220 transitions, 648 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-23 03:03:46,710 INFO L231 Difference]: Finished difference. Result has 221 places, 220 transitions, 494 flow [2022-11-23 03:03:46,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=221, PETRI_TRANSITIONS=220} [2022-11-23 03:03:46,715 INFO L288 CegarLoopForPetriNet]: 211 programPoint places, 10 predicate places. [2022-11-23 03:03:46,715 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 220 transitions, 494 flow [2022-11-23 03:03:46,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 404.7142857142857) internal successors, (2833), 7 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:46,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:46,734 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 03:03:46,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:03:46,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 03:03:46,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-23 03:03:46,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:46,946 INFO L85 PathProgramCache]: Analyzing trace with hash -336550712, now seen corresponding path program 2 times [2022-11-23 03:03:46,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:46,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879428746] [2022-11-23 03:03:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:46,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 03:03:47,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:47,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879428746] [2022-11-23 03:03:47,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879428746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:03:47,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395079061] [2022-11-23 03:03:47,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:03:47,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:03:47,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:03:47,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:03:47,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:03:47,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:03:47,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:03:47,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:03:47,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:03:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 03:03:47,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:03:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 03:03:47,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395079061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:03:47,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:03:47,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 03:03:47,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950244012] [2022-11-23 03:03:47,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:03:47,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:03:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:03:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:03:47,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 851 [2022-11-23 03:03:47,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 220 transitions, 494 flow. Second operand has 13 states, 13 states have (on average 404.38461538461536) internal successors, (5257), 13 states have internal predecessors, (5257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:47,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:47,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 851 [2022-11-23 03:03:47,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:54,585 INFO L130 PetriNetUnfolder]: 31287/72261 cut-off events. [2022-11-23 03:03:54,585 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2022-11-23 03:03:54,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117215 conditions, 72261 events. 31287/72261 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 1683. Compared 840726 event pairs, 27108 based on Foata normal form. 6/65246 useless extension candidates. Maximal degree in co-relation 117156. Up to 44791 conditions per place. [2022-11-23 03:03:55,026 INFO L137 encePairwiseOnDemand]: 848/851 looper letters, 84 selfloop transitions, 11 changer transitions 0/226 dead transitions. [2022-11-23 03:03:55,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 226 transitions, 720 flow [2022-11-23 03:03:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:03:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 03:03:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4937 transitions. [2022-11-23 03:03:55,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4834508421464943 [2022-11-23 03:03:55,040 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4937 transitions. [2022-11-23 03:03:55,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4937 transitions. [2022-11-23 03:03:55,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:55,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4937 transitions. [2022-11-23 03:03:55,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 411.4166666666667) internal successors, (4937), 12 states have internal predecessors, (4937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:55,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 851.0) internal successors, (11063), 13 states have internal predecessors, (11063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:55,072 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 851.0) internal successors, (11063), 13 states have internal predecessors, (11063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:55,072 INFO L175 Difference]: Start difference. First operand has 221 places, 220 transitions, 494 flow. Second operand 12 states and 4937 transitions. [2022-11-23 03:03:55,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 226 transitions, 720 flow [2022-11-23 03:03:55,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 226 transitions, 706 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 03:03:55,078 INFO L231 Difference]: Finished difference. Result has 237 places, 226 transitions, 564 flow [2022-11-23 03:03:55,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=564, PETRI_PLACES=237, PETRI_TRANSITIONS=226} [2022-11-23 03:03:55,079 INFO L288 CegarLoopForPetriNet]: 211 programPoint places, 26 predicate places. [2022-11-23 03:03:55,079 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 226 transitions, 564 flow [2022-11-23 03:03:55,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 404.38461538461536) internal successors, (5257), 13 states have internal predecessors, (5257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:55,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:55,081 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 03:03:55,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:03:55,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d59ae491-a9c3-45ea-9258-a3e7f6ef9b9a/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:03:55,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-23 03:03:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:55,288 INFO L85 PathProgramCache]: Analyzing trace with hash -965694968, now seen corresponding path program 3 times [2022-11-23 03:03:55,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:55,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928756848] [2022-11-23 03:03:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:55,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:03:55,322 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:03:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:03:55,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 03:03:55,358 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:03:55,358 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2022-11-23 03:03:55,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2022-11-23 03:03:55,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2022-11-23 03:03:55,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2022-11-23 03:03:55,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2022-11-23 03:03:55,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2022-11-23 03:03:55,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2022-11-23 03:03:55,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2022-11-23 03:03:55,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2022-11-23 03:03:55,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2022-11-23 03:03:55,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2022-11-23 03:03:55,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2022-11-23 03:03:55,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2022-11-23 03:03:55,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2022-11-23 03:03:55,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2022-11-23 03:03:55,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2022-11-23 03:03:55,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2022-11-23 03:03:55,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2022-11-23 03:03:55,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2022-11-23 03:03:55,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2022-11-23 03:03:55,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2022-11-23 03:03:55,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2022-11-23 03:03:55,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2022-11-23 03:03:55,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2022-11-23 03:03:55,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2022-11-23 03:03:55,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2022-11-23 03:03:55,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2022-11-23 03:03:55,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:03:55,364 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-23 03:03:55,365 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 03:03:55,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 03:03:55,418 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 03:03:55,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 572 transitions, 1174 flow [2022-11-23 03:03:55,855 INFO L130 PetriNetUnfolder]: 168/1312 cut-off events. [2022-11-23 03:03:55,855 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 03:03:55,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 1312 events. 168/1312 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8742 event pairs, 1 based on Foata normal form. 0/1077 useless extension candidates. Maximal degree in co-relation 927. Up to 16 conditions per place. [2022-11-23 03:03:55,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 504 places, 572 transitions, 1174 flow [2022-11-23 03:03:55,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 572 transitions, 1174 flow [2022-11-23 03:03:55,890 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:03:55,890 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 504 places, 572 transitions, 1174 flow [2022-11-23 03:03:55,891 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 504 places, 572 transitions, 1174 flow [2022-11-23 03:03:55,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 572 transitions, 1174 flow [2022-11-23 03:03:56,302 INFO L130 PetriNetUnfolder]: 168/1312 cut-off events. [2022-11-23 03:03:56,302 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 03:03:56,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 1312 events. 168/1312 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8742 event pairs, 1 based on Foata normal form. 0/1077 useless extension candidates. Maximal degree in co-relation 927. Up to 16 conditions per place. [2022-11-23 03:03:56,473 INFO L119 LiptonReduction]: Number of co-enabled transitions 204672 [2022-11-23 03:04:14,071 INFO L134 LiptonReduction]: Checked pairs total: 1735923 [2022-11-23 03:04:14,071 INFO L136 LiptonReduction]: Total number of compositions: 472 [2022-11-23 03:04:14,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:04:14,074 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;@2cdaaba6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:04:14,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-11-23 03:04:14,083 INFO L130 PetriNetUnfolder]: 42/135 cut-off events. [2022-11-23 03:04:14,083 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:04:14,084 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:04:14,084 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:04:14,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-11-23 03:04:14,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:04:14,085 INFO L85 PathProgramCache]: Analyzing trace with hash -374844709, now seen corresponding path program 1 times [2022-11-23 03:04:14,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:04:14,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881151691] [2022-11-23 03:04:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:04:14,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:04:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:04:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:04:14,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:04:14,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881151691] [2022-11-23 03:04:14,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881151691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:04:14,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:04:14,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:04:14,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11072337] [2022-11-23 03:04:14,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:04:14,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:04:14,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:04:14,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:04:14,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:04:14,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 1044 [2022-11-23 03:04:14,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 319 transitions, 668 flow. Second operand has 3 states, 3 states have (on average 497.0) internal successors, (1491), 3 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:04:14,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:04:14,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 1044 [2022-11-23 03:04:14,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand