./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/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_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/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_904eddf3-199d-4a79-834a-598f3a53a4b6/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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- 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 02:39:23,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:39:23,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:39:23,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:39:23,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:39:23,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:39:23,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:39:23,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:39:23,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:39:23,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:39:23,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:39:23,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:39:23,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:39:23,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:39:23,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:39:23,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:39:23,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:39:23,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:39:23,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:39:23,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:39:23,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:39:23,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:39:23,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:39:23,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:39:23,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:39:23,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:39:23,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:39:23,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:39:23,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:39:23,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:39:23,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:39:23,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:39:23,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:39:23,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:39:23,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:39:23,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:39:23,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:39:23,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:39:23,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:39:23,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:39:23,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:39:23,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-23 02:39:23,661 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:39:23,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:39:23,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:39:23,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:39:23,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:39:23,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:39:23,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:39:23,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:39:23,666 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:39:23,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:39:23,668 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:39:23,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:39:23,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:39:23,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:39:23,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:39:23,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:39:23,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:39:23,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:39:23,669 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-23 02:39:23,669 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:39:23,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:39:23,670 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:39:23,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:39:23,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:39:23,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:39:23,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:39:23,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:39:23,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:39:23,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:39:23,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:39:23,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:39:23,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:39:23,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:39:23,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:39:23,672 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:39:23,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:39:23,674 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_904eddf3-199d-4a79-834a-598f3a53a4b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2022-11-23 02:39:23,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:39:23,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:39:23,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:39:23,986 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:39:23,986 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:39:23,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2022-11-23 02:39:27,043 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:39:27,384 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:39:27,385 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2022-11-23 02:39:27,398 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/data/74c126b53/412197b8c2f74f0f9a0f6b8cb89f96f2/FLAGf89d67172 [2022-11-23 02:39:27,423 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/data/74c126b53/412197b8c2f74f0f9a0f6b8cb89f96f2 [2022-11-23 02:39:27,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:39:27,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:39:27,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:39:27,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:39:27,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:39:27,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:39:27" (1/1) ... [2022-11-23 02:39:27,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9a32b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:27, skipping insertion in model container [2022-11-23 02:39:27,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:39:27" (1/1) ... [2022-11-23 02:39:27,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:39:27,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:39:27,832 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_904eddf3-199d-4a79-834a-598f3a53a4b6/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2022-11-23 02:39:27,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:39:27,906 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:39:27,967 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_904eddf3-199d-4a79-834a-598f3a53a4b6/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i[30212,30225] [2022-11-23 02:39:27,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:39:28,025 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:39:28,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28 WrapperNode [2022-11-23 02:39:28,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:39:28,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:39:28,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:39:28,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:39:28,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (1/1) ... [2022-11-23 02:39:28,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (1/1) ... [2022-11-23 02:39:28,072 INFO L138 Inliner]: procedures = 173, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 153 [2022-11-23 02:39:28,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:39:28,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:39:28,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:39:28,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:39:28,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (1/1) ... [2022-11-23 02:39:28,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (1/1) ... [2022-11-23 02:39:28,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (1/1) ... [2022-11-23 02:39:28,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (1/1) ... [2022-11-23 02:39:28,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (1/1) ... [2022-11-23 02:39:28,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (1/1) ... [2022-11-23 02:39:28,099 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (1/1) ... [2022-11-23 02:39:28,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (1/1) ... [2022-11-23 02:39:28,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:39:28,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:39:28,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:39:28,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:39:28,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (1/1) ... [2022-11-23 02:39:28,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:39:28,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:39:28,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:39:28,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:39:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:39:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:39:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 02:39:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:39:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:39:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 02:39:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 02:39:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:39:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:39:28,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:39:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:39:28,189 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 02:39:28,332 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:39:28,334 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:39:28,741 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:39:28,749 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:39:28,749 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-23 02:39:28,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:39:28 BoogieIcfgContainer [2022-11-23 02:39:28,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:39:28,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:39:28,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:39:28,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:39:28,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:39:27" (1/3) ... [2022-11-23 02:39:28,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a94882f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:39:28, skipping insertion in model container [2022-11-23 02:39:28,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:28" (2/3) ... [2022-11-23 02:39:28,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a94882f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:39:28, skipping insertion in model container [2022-11-23 02:39:28,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:39:28" (3/3) ... [2022-11-23 02:39:28,760 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2022-11-23 02:39:28,769 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:39:28,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:39:28,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 02:39:28,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:39:28,838 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-23 02:39:28,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 172 transitions, 352 flow [2022-11-23 02:39:29,044 INFO L130 PetriNetUnfolder]: 26/270 cut-off events. [2022-11-23 02:39:29,044 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:39:29,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 270 events. 26/270 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 842 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2022-11-23 02:39:29,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 172 transitions, 352 flow [2022-11-23 02:39:29,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 172 transitions, 352 flow [2022-11-23 02:39:29,082 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:39:29,107 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 172 transitions, 352 flow [2022-11-23 02:39:29,116 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 172 transitions, 352 flow [2022-11-23 02:39:29,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 172 transitions, 352 flow [2022-11-23 02:39:29,199 INFO L130 PetriNetUnfolder]: 26/270 cut-off events. [2022-11-23 02:39:29,199 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:39:29,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 270 events. 26/270 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 842 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2022-11-23 02:39:29,204 INFO L119 LiptonReduction]: Number of co-enabled transitions 4992 [2022-11-23 02:39:34,472 INFO L134 LiptonReduction]: Checked pairs total: 10049 [2022-11-23 02:39:34,473 INFO L136 LiptonReduction]: Total number of compositions: 163 [2022-11-23 02:39:34,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:39:34,496 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;@1ef53fea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:39:34,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-23 02:39:34,502 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2022-11-23 02:39:34,502 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:39:34,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:39:34,503 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:39:34,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-23 02:39:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:34,509 INFO L85 PathProgramCache]: Analyzing trace with hash 19255941, now seen corresponding path program 1 times [2022-11-23 02:39:34,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:34,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003018507] [2022-11-23 02:39:34,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:34,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:34,779 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 02:39:34,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:34,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003018507] [2022-11-23 02:39:34,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003018507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:34,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:39:34,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:39:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72825335] [2022-11-23 02:39:34,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:34,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:39:34,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:34,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:39:34,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:39:34,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 335 [2022-11-23 02:39:34,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 49 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 02:39:34,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:39:34,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 335 [2022-11-23 02:39:34,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:39:35,005 INFO L130 PetriNetUnfolder]: 92/245 cut-off events. [2022-11-23 02:39:35,005 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 02:39:35,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 245 events. 92/245 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1004 event pairs, 0 based on Foata normal form. 40/260 useless extension candidates. Maximal degree in co-relation 425. Up to 193 conditions per place. [2022-11-23 02:39:35,008 INFO L137 encePairwiseOnDemand]: 320/335 looper letters, 29 selfloop transitions, 2 changer transitions 2/43 dead transitions. [2022-11-23 02:39:35,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 160 flow [2022-11-23 02:39:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:39:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:39:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2022-11-23 02:39:35,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5054726368159204 [2022-11-23 02:39:35,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2022-11-23 02:39:35,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2022-11-23 02:39:35,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:39:35,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2022-11-23 02:39:35,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 02:39:35,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 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 02:39:35,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 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 02:39:35,051 INFO L175 Difference]: Start difference. First operand has 40 places, 49 transitions, 106 flow. Second operand 3 states and 508 transitions. [2022-11-23 02:39:35,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 160 flow [2022-11-23 02:39:35,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:39:35,057 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 83 flow [2022-11-23 02:39:35,059 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2022-11-23 02:39:35,063 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2022-11-23 02:39:35,063 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 83 flow [2022-11-23 02:39:35,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 02:39:35,064 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:39:35,064 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 02:39:35,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:39:35,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-23 02:39:35,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:35,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1307759195, now seen corresponding path program 1 times [2022-11-23 02:39:35,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:35,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368581869] [2022-11-23 02:39:35,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:35,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:39:35,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:39:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:39:35,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:39:35,146 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:39:35,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-11-23 02:39:35,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-11-23 02:39:35,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-11-23 02:39:35,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-11-23 02:39:35,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2022-11-23 02:39:35,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-11-23 02:39:35,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-11-23 02:39:35,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-11-23 02:39:35,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:39:35,152 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 02:39:35,155 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:39:35,155 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 02:39:35,174 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 02:39:35,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 198 transitions, 414 flow [2022-11-23 02:39:35,263 INFO L130 PetriNetUnfolder]: 43/425 cut-off events. [2022-11-23 02:39:35,263 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:39:35,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 425 events. 43/425 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1679 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 272. Up to 9 conditions per place. [2022-11-23 02:39:35,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 198 transitions, 414 flow [2022-11-23 02:39:35,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 198 transitions, 414 flow [2022-11-23 02:39:35,269 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:39:35,269 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 198 transitions, 414 flow [2022-11-23 02:39:35,270 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 198 transitions, 414 flow [2022-11-23 02:39:35,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 198 transitions, 414 flow [2022-11-23 02:39:35,321 INFO L130 PetriNetUnfolder]: 43/425 cut-off events. [2022-11-23 02:39:35,321 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 02:39:35,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 425 events. 43/425 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1679 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 272. Up to 9 conditions per place. [2022-11-23 02:39:35,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 11664 [2022-11-23 02:39:40,280 INFO L134 LiptonReduction]: Checked pairs total: 27221 [2022-11-23 02:39:40,280 INFO L136 LiptonReduction]: Total number of compositions: 184 [2022-11-23 02:39:40,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:39:40,284 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;@1ef53fea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:39:40,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-23 02:39:40,287 INFO L130 PetriNetUnfolder]: 3/11 cut-off events. [2022-11-23 02:39:40,287 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:39:40,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:39:40,288 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:39:40,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-23 02:39:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash 31751236, now seen corresponding path program 1 times [2022-11-23 02:39:40,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:40,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426511348] [2022-11-23 02:39:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:40,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:40,343 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 02:39:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:40,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426511348] [2022-11-23 02:39:40,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426511348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:40,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:39:40,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:39:40,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946115198] [2022-11-23 02:39:40,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:40,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:39:40,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:40,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:39:40,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:39:40,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 382 [2022-11-23 02:39:40,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 63 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 02:39:40,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:39:40,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 382 [2022-11-23 02:39:40,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:39:40,727 INFO L130 PetriNetUnfolder]: 1632/2979 cut-off events. [2022-11-23 02:39:40,727 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-23 02:39:40,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5661 conditions, 2979 events. 1632/2979 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17484 event pairs, 696 based on Foata normal form. 56/2789 useless extension candidates. Maximal degree in co-relation 745. Up to 2617 conditions per place. [2022-11-23 02:39:40,744 INFO L137 encePairwiseOnDemand]: 365/382 looper letters, 42 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2022-11-23 02:39:40,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 220 flow [2022-11-23 02:39:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:39:40,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:39:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2022-11-23 02:39:40,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.506108202443281 [2022-11-23 02:39:40,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2022-11-23 02:39:40,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2022-11-23 02:39:40,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:39:40,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2022-11-23 02:39:40,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 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 02:39:40,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 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 02:39:40,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 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 02:39:40,756 INFO L175 Difference]: Start difference. First operand has 53 places, 63 transitions, 144 flow. Second operand 3 states and 580 transitions. [2022-11-23 02:39:40,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 220 flow [2022-11-23 02:39:40,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:39:40,758 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 128 flow [2022-11-23 02:39:40,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2022-11-23 02:39:40,759 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2022-11-23 02:39:40,759 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 128 flow [2022-11-23 02:39:40,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 02:39:40,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:39:40,760 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:39:40,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 02:39:40,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-23 02:39:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash 396801388, now seen corresponding path program 1 times [2022-11-23 02:39:40,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:40,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222594776] [2022-11-23 02:39:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:40,804 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 02:39:40,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:40,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222594776] [2022-11-23 02:39:40,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222594776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:40,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:39:40,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:39:40,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975657677] [2022-11-23 02:39:40,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:40,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:39:40,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:40,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:39:40,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:39:40,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 382 [2022-11-23 02:39:40,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 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 02:39:40,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:39:40,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 382 [2022-11-23 02:39:40,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:39:41,675 INFO L130 PetriNetUnfolder]: 4512/7543 cut-off events. [2022-11-23 02:39:41,675 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2022-11-23 02:39:41,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15054 conditions, 7543 events. 4512/7543 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 44557 event pairs, 1467 based on Foata normal form. 0/6784 useless extension candidates. Maximal degree in co-relation 14992. Up to 4365 conditions per place. [2022-11-23 02:39:41,719 INFO L137 encePairwiseOnDemand]: 372/382 looper letters, 72 selfloop transitions, 8 changer transitions 0/86 dead transitions. [2022-11-23 02:39:41,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 86 transitions, 378 flow [2022-11-23 02:39:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:39:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:39:41,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2022-11-23 02:39:41,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4965095986038394 [2022-11-23 02:39:41,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2022-11-23 02:39:41,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2022-11-23 02:39:41,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:39:41,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2022-11-23 02:39:41,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 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 02:39:41,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 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 02:39:41,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 382.0) internal successors, (1528), 4 states have internal predecessors, (1528), 0 states have call successors, (0), 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 02:39:41,731 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 128 flow. Second operand 3 states and 569 transitions. [2022-11-23 02:39:41,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 86 transitions, 378 flow [2022-11-23 02:39:41,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 86 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:39:41,735 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 186 flow [2022-11-23 02:39:41,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=382, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2022-11-23 02:39:41,736 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2022-11-23 02:39:41,736 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 186 flow [2022-11-23 02:39:41,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 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 02:39:41,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:39:41,737 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 02:39:41,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 02:39:41,738 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-23 02:39:41,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:41,738 INFO L85 PathProgramCache]: Analyzing trace with hash 736911653, now seen corresponding path program 1 times [2022-11-23 02:39:41,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:41,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190056949] [2022-11-23 02:39:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:39:41,763 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:39:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:39:41,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:39:41,801 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:39:41,801 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-23 02:39:41,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-11-23 02:39:41,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-11-23 02:39:41,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-11-23 02:39:41,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-11-23 02:39:41,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-11-23 02:39:41,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-11-23 02:39:41,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-11-23 02:39:41,804 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-11-23 02:39:41,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 02:39:41,805 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-23 02:39:41,805 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:39:41,805 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 02:39:41,843 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 02:39:41,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 224 transitions, 478 flow [2022-11-23 02:39:41,936 INFO L130 PetriNetUnfolder]: 65/625 cut-off events. [2022-11-23 02:39:41,937 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 02:39:41,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 625 events. 65/625 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2804 event pairs, 1 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 433. Up to 16 conditions per place. [2022-11-23 02:39:41,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 224 transitions, 478 flow [2022-11-23 02:39:41,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 224 transitions, 478 flow [2022-11-23 02:39:41,945 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:39:41,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 224 transitions, 478 flow [2022-11-23 02:39:41,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 224 transitions, 478 flow [2022-11-23 02:39:41,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 224 transitions, 478 flow [2022-11-23 02:39:42,017 INFO L130 PetriNetUnfolder]: 65/625 cut-off events. [2022-11-23 02:39:42,017 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-23 02:39:42,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 625 events. 65/625 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2804 event pairs, 1 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 433. Up to 16 conditions per place. [2022-11-23 02:39:42,037 INFO L119 LiptonReduction]: Number of co-enabled transitions 19440 [2022-11-23 02:39:47,269 INFO L134 LiptonReduction]: Checked pairs total: 45872 [2022-11-23 02:39:47,269 INFO L136 LiptonReduction]: Total number of compositions: 209 [2022-11-23 02:39:47,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:39:47,272 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;@1ef53fea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:39:47,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-23 02:39:47,275 INFO L130 PetriNetUnfolder]: 2/9 cut-off events. [2022-11-23 02:39:47,275 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:39:47,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:39:47,275 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:39:47,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-23 02:39:47,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:47,276 INFO L85 PathProgramCache]: Analyzing trace with hash 45794412, now seen corresponding path program 1 times [2022-11-23 02:39:47,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:47,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187623783] [2022-11-23 02:39:47,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:47,312 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 02:39:47,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:47,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187623783] [2022-11-23 02:39:47,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187623783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:47,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:39:47,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:39:47,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331821313] [2022-11-23 02:39:47,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:47,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:39:47,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:47,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:39:47,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:39:47,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 433 [2022-11-23 02:39:47,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 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 02:39:47,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:39:47,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 433 [2022-11-23 02:39:47,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:39:49,070 INFO L130 PetriNetUnfolder]: 9981/16287 cut-off events. [2022-11-23 02:39:49,070 INFO L131 PetriNetUnfolder]: For 495/495 co-relation queries the response was YES. [2022-11-23 02:39:49,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30970 conditions, 16287 events. 9981/16287 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 117969 event pairs, 6021 based on Foata normal form. 2293/17112 useless extension candidates. Maximal degree in co-relation 4461. Up to 14302 conditions per place. [2022-11-23 02:39:49,169 INFO L137 encePairwiseOnDemand]: 414/433 looper letters, 46 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-11-23 02:39:49,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 258 flow [2022-11-23 02:39:49,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:39:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:39:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2022-11-23 02:39:49,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4973056197074673 [2022-11-23 02:39:49,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2022-11-23 02:39:49,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2022-11-23 02:39:49,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:39:49,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2022-11-23 02:39:49,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 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 02:39:49,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 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 02:39:49,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 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 02:39:49,185 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 180 flow. Second operand 3 states and 646 transitions. [2022-11-23 02:39:49,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 258 flow [2022-11-23 02:39:49,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:39:49,194 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 160 flow [2022-11-23 02:39:49,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2022-11-23 02:39:49,197 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2022-11-23 02:39:49,197 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 160 flow [2022-11-23 02:39:49,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 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 02:39:49,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:39:49,198 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:39:49,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:39:49,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-23 02:39:49,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:49,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1394589038, now seen corresponding path program 1 times [2022-11-23 02:39:49,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:49,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427972568] [2022-11-23 02:39:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:49,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:49,266 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 02:39:49,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:49,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427972568] [2022-11-23 02:39:49,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427972568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:49,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:39:49,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:39:49,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594708178] [2022-11-23 02:39:49,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:49,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:39:49,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:49,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:39:49,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:39:49,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 433 [2022-11-23 02:39:49,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 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 02:39:49,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:39:49,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 433 [2022-11-23 02:39:49,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:39:53,887 INFO L130 PetriNetUnfolder]: 34525/52154 cut-off events. [2022-11-23 02:39:53,888 INFO L131 PetriNetUnfolder]: For 1475/1475 co-relation queries the response was YES. [2022-11-23 02:39:54,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103084 conditions, 52154 events. 34525/52154 cut-off events. For 1475/1475 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 372765 event pairs, 12891 based on Foata normal form. 0/46833 useless extension candidates. Maximal degree in co-relation 103031. Up to 32063 conditions per place. [2022-11-23 02:39:54,335 INFO L137 encePairwiseOnDemand]: 420/433 looper letters, 79 selfloop transitions, 10 changer transitions 0/100 dead transitions. [2022-11-23 02:39:54,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 446 flow [2022-11-23 02:39:54,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:39:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:39:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2022-11-23 02:39:54,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48498845265588914 [2022-11-23 02:39:54,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2022-11-23 02:39:54,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2022-11-23 02:39:54,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:39:54,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2022-11-23 02:39:54,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 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 02:39:54,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 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 02:39:54,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 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 02:39:54,344 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 160 flow. Second operand 3 states and 630 transitions. [2022-11-23 02:39:54,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 446 flow [2022-11-23 02:39:54,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:39:54,351 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 236 flow [2022-11-23 02:39:54,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2022-11-23 02:39:54,353 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2022-11-23 02:39:54,354 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 236 flow [2022-11-23 02:39:54,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 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 02:39:54,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:39:54,355 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:39:54,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:39:54,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-23 02:39:54,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:54,355 INFO L85 PathProgramCache]: Analyzing trace with hash 66952515, now seen corresponding path program 1 times [2022-11-23 02:39:54,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:54,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203398395] [2022-11-23 02:39:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:54,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:54,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:39:54,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:39:54,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203398395] [2022-11-23 02:39:54,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203398395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:39:54,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38101179] [2022-11-23 02:39:54,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:54,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:39:54,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:39:54,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:39:54,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:39:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:39:54,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:39:54,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:39:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 02:39:54,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:39:54,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38101179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:39:54,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:39:54,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-23 02:39:54,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752350688] [2022-11-23 02:39:54,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:39:54,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:39:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:39:54,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:39:54,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 02:39:54,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 433 [2022-11-23 02:39:54,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 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 02:39:54,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:39:54,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 433 [2022-11-23 02:39:54,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:39:56,160 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1012] L709-16-->L709-17: Formula: (= |v_#race~glob~0_7| 0) InVars {} OutVars{#race~glob~0=|v_#race~glob~0_7|} AuxVars[] AssignedVars[#race~glob~0][65], [t_funThread3of3ForFork0InUse, 37#t_funENTRYtrue, Black: 213#(= |ULTIMATE.start_main_~i~1#1| 0), 96#L715-4true, 46#L715-4true, 218#(= |#race~glob~0| 0), Black: 216#true, t_funThread1of3ForFork0InUse, 222#true, 94#L709-17true, t_funThread2of3ForFork0InUse]) [2022-11-23 02:39:56,160 INFO L383 tUnfolder$Statistics]: this new event has 32 ancestors and is cut-off event [2022-11-23 02:39:56,161 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2022-11-23 02:39:56,161 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2022-11-23 02:39:56,161 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2022-11-23 02:39:56,263 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1012] L709-16-->L709-17: Formula: (= |v_#race~glob~0_7| 0) InVars {} OutVars{#race~glob~0=|v_#race~glob~0_7|} AuxVars[] AssignedVars[#race~glob~0][65], [t_funThread3of3ForFork0InUse, Black: 213#(= |ULTIMATE.start_main_~i~1#1| 0), 96#L715-4true, 46#L715-4true, 218#(= |#race~glob~0| 0), Black: 216#true, 222#true, t_funThread1of3ForFork0InUse, 178#L715-9true, 94#L709-17true, t_funThread2of3ForFork0InUse]) [2022-11-23 02:39:56,263 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2022-11-23 02:39:56,264 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2022-11-23 02:39:56,264 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2022-11-23 02:39:56,264 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2022-11-23 02:39:56,272 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1270] L715-1-->L715-3: Formula: (= |v_#race~glob~0_1185| 0) InVars {} OutVars{t_funThread1of3ForFork0_#t~nondet14#1=|v_t_funThread1of3ForFork0_#t~nondet14#1_7|, #race~glob~0=|v_#race~glob~0_1185|} AuxVars[] AssignedVars[t_funThread1of3ForFork0_#t~nondet14#1, #race~glob~0][30], [t_funThread3of3ForFork0InUse, Black: 213#(= |ULTIMATE.start_main_~i~1#1| 0), 96#L715-4true, 6#L709-16true, 46#L715-4true, 218#(= |#race~glob~0| 0), t_funThread1of3ForFork0InUse, Black: 216#true, 222#true, t_funThread2of3ForFork0InUse, 23#L715-3true]) [2022-11-23 02:39:56,273 INFO L383 tUnfolder$Statistics]: this new event has 34 ancestors and is cut-off event [2022-11-23 02:39:56,273 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2022-11-23 02:39:56,273 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2022-11-23 02:39:56,273 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2022-11-23 02:39:56,702 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1274] L715-3-->L715-5: Formula: (= |v_#race~glob~0_1190| 0) InVars {#race~glob~0=|v_#race~glob~0_1190|} OutVars{#race~glob~0=|v_#race~glob~0_1190|} AuxVars[] AssignedVars[][13], [t_funThread3of3ForFork0InUse, Black: 213#(= |ULTIMATE.start_main_~i~1#1| 0), 96#L715-4true, 6#L709-16true, 46#L715-4true, 218#(= |#race~glob~0| 0), 82#L715-5true, t_funThread1of3ForFork0InUse, Black: 216#true, 222#true, t_funThread2of3ForFork0InUse]) [2022-11-23 02:39:56,702 INFO L383 tUnfolder$Statistics]: this new event has 35 ancestors and is cut-off event [2022-11-23 02:39:56,702 INFO L386 tUnfolder$Statistics]: existing Event has 35 ancestors and is cut-off event [2022-11-23 02:39:56,702 INFO L386 tUnfolder$Statistics]: existing Event has 35 ancestors and is cut-off event [2022-11-23 02:39:56,703 INFO L386 tUnfolder$Statistics]: existing Event has 35 ancestors and is cut-off event [2022-11-23 02:39:56,703 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1012] L709-16-->L709-17: Formula: (= |v_#race~glob~0_7| 0) InVars {} OutVars{#race~glob~0=|v_#race~glob~0_7|} AuxVars[] AssignedVars[#race~glob~0][65], [t_funThread3of3ForFork0InUse, Black: 213#(= |ULTIMATE.start_main_~i~1#1| 0), 96#L715-4true, 46#L715-4true, 218#(= |#race~glob~0| 0), t_funThread1of3ForFork0InUse, Black: 216#true, 222#true, t_funThread2of3ForFork0InUse, 94#L709-17true, 23#L715-3true]) [2022-11-23 02:39:56,704 INFO L383 tUnfolder$Statistics]: this new event has 35 ancestors and is cut-off event [2022-11-23 02:39:56,704 INFO L386 tUnfolder$Statistics]: existing Event has 35 ancestors and is cut-off event [2022-11-23 02:39:56,704 INFO L386 tUnfolder$Statistics]: existing Event has 35 ancestors and is cut-off event [2022-11-23 02:39:56,704 INFO L386 tUnfolder$Statistics]: existing Event has 35 ancestors and is cut-off event [2022-11-23 02:39:56,903 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1012] L709-16-->L709-17: Formula: (= |v_#race~glob~0_7| 0) InVars {} OutVars{#race~glob~0=|v_#race~glob~0_7|} AuxVars[] AssignedVars[#race~glob~0][65], [t_funThread3of3ForFork0InUse, Black: 213#(= |ULTIMATE.start_main_~i~1#1| 0), 96#L715-4true, 46#L715-4true, 218#(= |#race~glob~0| 0), 82#L715-5true, Black: 216#true, 222#true, t_funThread1of3ForFork0InUse, 94#L709-17true, t_funThread2of3ForFork0InUse]) [2022-11-23 02:39:56,903 INFO L383 tUnfolder$Statistics]: this new event has 36 ancestors and is cut-off event [2022-11-23 02:39:56,904 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2022-11-23 02:39:56,904 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2022-11-23 02:39:56,904 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2022-11-23 02:39:56,954 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1012] L709-16-->L709-17: Formula: (= |v_#race~glob~0_7| 0) InVars {} OutVars{#race~glob~0=|v_#race~glob~0_7|} AuxVars[] AssignedVars[#race~glob~0][65], [t_funThread3of3ForFork0InUse, 29#t_funErr0ASSERT_VIOLATIONDATA_RACEtrue, Black: 213#(= |ULTIMATE.start_main_~i~1#1| 0), 96#L715-4true, 46#L715-4true, 218#(= |#race~glob~0| 0), t_funThread1of3ForFork0InUse, Black: 216#true, 222#true, t_funThread2of3ForFork0InUse, 94#L709-17true]) [2022-11-23 02:39:56,955 INFO L383 tUnfolder$Statistics]: this new event has 36 ancestors and is cut-off event [2022-11-23 02:39:56,955 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2022-11-23 02:39:56,955 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2022-11-23 02:39:56,955 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2022-11-23 02:39:57,081 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1012] L709-16-->L709-17: Formula: (= |v_#race~glob~0_7| 0) InVars {} OutVars{#race~glob~0=|v_#race~glob~0_7|} AuxVars[] AssignedVars[#race~glob~0][65], [t_funThread3of3ForFork0InUse, 171#L715-7true, Black: 213#(= |ULTIMATE.start_main_~i~1#1| 0), 96#L715-4true, 46#L715-4true, 218#(= |#race~glob~0| 0), Black: 216#true, 222#true, t_funThread1of3ForFork0InUse, 94#L709-17true, t_funThread2of3ForFork0InUse]) [2022-11-23 02:39:57,081 INFO L383 tUnfolder$Statistics]: this new event has 37 ancestors and is cut-off event [2022-11-23 02:39:57,081 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2022-11-23 02:39:57,081 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2022-11-23 02:39:57,081 INFO L386 tUnfolder$Statistics]: existing Event has 37 ancestors and is cut-off event [2022-11-23 02:39:57,610 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1012] L709-16-->L709-17: Formula: (= |v_#race~glob~0_7| 0) InVars {} OutVars{#race~glob~0=|v_#race~glob~0_7|} AuxVars[] AssignedVars[#race~glob~0][65], [t_funThread3of3ForFork0InUse, 26#t_funEXITtrue, Black: 213#(= |ULTIMATE.start_main_~i~1#1| 0), 96#L715-4true, 46#L715-4true, 218#(= |#race~glob~0| 0), 222#true, t_funThread1of3ForFork0InUse, Black: 216#true, 94#L709-17true, t_funThread2of3ForFork0InUse]) [2022-11-23 02:39:57,610 INFO L383 tUnfolder$Statistics]: this new event has 39 ancestors and is cut-off event [2022-11-23 02:39:57,610 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-11-23 02:39:57,611 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-11-23 02:39:57,611 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2022-11-23 02:39:58,584 INFO L130 PetriNetUnfolder]: 29263/45060 cut-off events. [2022-11-23 02:39:58,584 INFO L131 PetriNetUnfolder]: For 17286/18064 co-relation queries the response was YES. [2022-11-23 02:39:58,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106245 conditions, 45060 events. 29263/45060 cut-off events. For 17286/18064 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 338317 event pairs, 20938 based on Foata normal form. 36/40347 useless extension candidates. Maximal degree in co-relation 21865. Up to 40025 conditions per place. [2022-11-23 02:39:58,813 INFO L137 encePairwiseOnDemand]: 427/433 looper letters, 62 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2022-11-23 02:39:58,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 438 flow [2022-11-23 02:39:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:39:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:39:58,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 615 transitions. [2022-11-23 02:39:58,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47344110854503463 [2022-11-23 02:39:58,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 615 transitions. [2022-11-23 02:39:58,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 615 transitions. [2022-11-23 02:39:58,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:39:58,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 615 transitions. [2022-11-23 02:39:58,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 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 02:39:58,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 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 02:39:58,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 433.0) internal successors, (1732), 4 states have internal predecessors, (1732), 0 states have call successors, (0), 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 02:39:58,823 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 236 flow. Second operand 3 states and 615 transitions. [2022-11-23 02:39:58,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 438 flow [2022-11-23 02:39:58,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:39:58,849 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 282 flow [2022-11-23 02:39:58,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=433, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2022-11-23 02:39:58,852 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2022-11-23 02:39:58,852 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 282 flow [2022-11-23 02:39:58,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 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 02:39:58,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:39:58,854 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-23 02:39:58,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:39:59,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_904eddf3-199d-4a79-834a-598f3a53a4b6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:39:59,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-23 02:39:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:39:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash 168402331, now seen corresponding path program 1 times [2022-11-23 02:39:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:39:59,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279138708] [2022-11-23 02:39:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:39:59,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:39:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:39:59,090 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 02:39:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 02:39:59,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 02:39:59,123 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 02:39:59,124 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-23 02:39:59,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-11-23 02:39:59,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-11-23 02:39:59,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-11-23 02:39:59,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-11-23 02:39:59,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-11-23 02:39:59,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-11-23 02:39:59,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-11-23 02:39:59,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-11-23 02:39:59,127 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-11-23 02:39:59,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:39:59,127 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-23 02:39:59,128 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 02:39:59,128 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-23 02:39:59,154 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-23 02:39:59,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 250 transitions, 544 flow [2022-11-23 02:39:59,276 INFO L130 PetriNetUnfolder]: 99/917 cut-off events. [2022-11-23 02:39:59,276 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-23 02:39:59,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 917 events. 99/917 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4470 event pairs, 6 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 645. Up to 32 conditions per place. [2022-11-23 02:39:59,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 250 transitions, 544 flow [2022-11-23 02:39:59,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 250 transitions, 544 flow [2022-11-23 02:39:59,288 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:39:59,289 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 250 transitions, 544 flow [2022-11-23 02:39:59,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 250 transitions, 544 flow [2022-11-23 02:39:59,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 250 transitions, 544 flow [2022-11-23 02:39:59,527 INFO L130 PetriNetUnfolder]: 99/917 cut-off events. [2022-11-23 02:39:59,527 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-23 02:39:59,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 917 events. 99/917 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4470 event pairs, 6 based on Foata normal form. 0/778 useless extension candidates. Maximal degree in co-relation 645. Up to 32 conditions per place. [2022-11-23 02:39:59,551 INFO L119 LiptonReduction]: Number of co-enabled transitions 28512 [2022-11-23 02:40:05,113 INFO L134 LiptonReduction]: Checked pairs total: 69628 [2022-11-23 02:40:05,114 INFO L136 LiptonReduction]: Total number of compositions: 231 [2022-11-23 02:40:05,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:40:05,116 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;@1ef53fea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:40:05,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-23 02:40:05,118 INFO L130 PetriNetUnfolder]: 3/11 cut-off events. [2022-11-23 02:40:05,119 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:40:05,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:40:05,119 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 02:40:05,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-23 02:40:05,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:05,120 INFO L85 PathProgramCache]: Analyzing trace with hash 61366153, now seen corresponding path program 1 times [2022-11-23 02:40:05,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:05,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642998259] [2022-11-23 02:40:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:05,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:05,145 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 02:40:05,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:05,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642998259] [2022-11-23 02:40:05,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642998259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:05,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:05,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:40:05,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586954355] [2022-11-23 02:40:05,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:05,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:40:05,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:05,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:40:05,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:40:05,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 481 [2022-11-23 02:40:05,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 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 02:40:05,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:40:05,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 481 [2022-11-23 02:40:05,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:40:15,363 INFO L130 PetriNetUnfolder]: 81602/119289 cut-off events. [2022-11-23 02:40:15,364 INFO L131 PetriNetUnfolder]: For 5074/5074 co-relation queries the response was YES. [2022-11-23 02:40:15,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230097 conditions, 119289 events. 81602/119289 cut-off events. For 5074/5074 co-relation queries the response was YES. Maximal size of possible extension queue 3139. Compared 933000 event pairs, 58556 based on Foata normal form. 22642/132120 useless extension candidates. Maximal degree in co-relation 36045. Up to 108037 conditions per place. [2022-11-23 02:40:16,012 INFO L137 encePairwiseOnDemand]: 460/481 looper letters, 52 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-11-23 02:40:16,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 302 flow [2022-11-23 02:40:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:40:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:40:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2022-11-23 02:40:16,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49480249480249483 [2022-11-23 02:40:16,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2022-11-23 02:40:16,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2022-11-23 02:40:16,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:40:16,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2022-11-23 02:40:16,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 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 02:40:16,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 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 02:40:16,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 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 02:40:16,029 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 218 flow. Second operand 3 states and 714 transitions. [2022-11-23 02:40:16,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 302 flow [2022-11-23 02:40:16,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 302 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 02:40:16,037 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 194 flow [2022-11-23 02:40:16,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2022-11-23 02:40:16,038 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2022-11-23 02:40:16,039 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 194 flow [2022-11-23 02:40:16,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 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 02:40:16,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:40:16,040 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:40:16,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 02:40:16,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-11-23 02:40:16,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:40:16,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1456691504, now seen corresponding path program 1 times [2022-11-23 02:40:16,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:40:16,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350679791] [2022-11-23 02:40:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:40:16,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:40:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:40:16,077 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 02:40:16,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:40:16,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350679791] [2022-11-23 02:40:16,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350679791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:40:16,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:40:16,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:40:16,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096302130] [2022-11-23 02:40:16,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:40:16,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:40:16,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:40:16,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:40:16,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:40:16,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 481 [2022-11-23 02:40:16,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 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 02:40:16,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:40:16,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 481 [2022-11-23 02:40:16,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand