./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc --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 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 --- 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-5e519f3 [2022-11-02 20:49:24,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:49:24,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:49:24,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:49:24,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:49:24,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:49:24,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:49:24,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:49:24,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:49:24,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:49:24,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:49:24,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:49:24,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:49:24,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:49:24,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:49:24,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:49:24,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:49:24,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:49:24,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:49:24,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:49:24,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:49:24,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:49:24,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:49:24,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:49:24,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:49:24,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:49:24,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:49:24,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:49:24,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:49:24,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:49:24,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:49:24,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:49:24,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:49:24,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:49:24,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:49:24,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:49:24,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:49:24,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:49:24,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:49:24,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:49:24,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:49:24,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:49:24,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:49:24,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:49:24,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:49:24,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:49:24,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:49:24,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:49:24,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:49:24,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:49:24,557 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:49:24,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:49:24,558 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:49:24,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:49:24,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:49:24,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:49:24,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:49:24,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:49:24,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:49:24,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:49:24,560 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:49:24,560 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:49:24,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:49:24,560 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:49:24,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:49:24,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:49:24,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:49:24,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:49:24,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:49:24,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:49:24,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:49:24,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:49:24,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:49:24,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:49:24,563 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:49:24,563 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:49:24,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:49:24,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 [2022-11-02 20:49:24,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:49:24,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:49:24,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:49:24,931 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:49:24,932 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:49:24,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2022-11-02 20:49:25,028 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/data/8ab5318ed/ac76a4d6b2c84017a8346246141b87dc/FLAG79c91745b [2022-11-02 20:49:25,673 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:49:25,674 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2022-11-02 20:49:25,687 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/data/8ab5318ed/ac76a4d6b2c84017a8346246141b87dc/FLAG79c91745b [2022-11-02 20:49:25,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/data/8ab5318ed/ac76a4d6b2c84017a8346246141b87dc [2022-11-02 20:49:25,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:49:25,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:49:25,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:49:25,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:49:25,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:49:25,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:49:25" (1/1) ... [2022-11-02 20:49:25,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e8fcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:25, skipping insertion in model container [2022-11-02 20:49:25,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:49:25" (1/1) ... [2022-11-02 20:49:25,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:49:26,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:49:26,480 WARN L230 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_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i[30559,30572] [2022-11-02 20:49:26,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:49:26,505 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:49:26,587 WARN L230 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_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i[30559,30572] [2022-11-02 20:49:26,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:49:26,624 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:49:26,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26 WrapperNode [2022-11-02 20:49:26,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:49:26,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:49:26,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:49:26,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:49:26,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (1/1) ... [2022-11-02 20:49:26,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (1/1) ... [2022-11-02 20:49:26,689 INFO L138 Inliner]: procedures = 170, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2022-11-02 20:49:26,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:49:26,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:49:26,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:49:26,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:49:26,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (1/1) ... [2022-11-02 20:49:26,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (1/1) ... [2022-11-02 20:49:26,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (1/1) ... [2022-11-02 20:49:26,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (1/1) ... [2022-11-02 20:49:26,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (1/1) ... [2022-11-02 20:49:26,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (1/1) ... [2022-11-02 20:49:26,754 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (1/1) ... [2022-11-02 20:49:26,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (1/1) ... [2022-11-02 20:49:26,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:49:26,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:49:26,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:49:26,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:49:26,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (1/1) ... [2022-11-02 20:49:26,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:49:26,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:49:26,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:49:26,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e1ccd07-8ba1-46cf-9bb6-80b1510fbcc4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:49:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:49:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:49:26,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:49:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:49:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:49:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:49:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:49:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:49:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:49:26,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:49:26,879 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:49:27,120 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:49:27,122 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:49:27,513 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:49:27,670 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:49:27,671 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:49:27,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:49:27 BoogieIcfgContainer [2022-11-02 20:49:27,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:49:27,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:49:27,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:49:27,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:49:27,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:49:25" (1/3) ... [2022-11-02 20:49:27,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644b1458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:49:27, skipping insertion in model container [2022-11-02 20:49:27,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:26" (2/3) ... [2022-11-02 20:49:27,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644b1458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:49:27, skipping insertion in model container [2022-11-02 20:49:27,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:49:27" (3/3) ... [2022-11-02 20:49:27,686 INFO L112 eAbstractionObserver]: Analyzing ICFG 38_rand_cas_vs_concur.i [2022-11-02 20:49:27,698 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:49:27,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:49:27,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-02 20:49:27,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:49:27,834 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:49:27,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 105 transitions, 215 flow [2022-11-02 20:49:27,973 INFO L130 PetriNetUnfolder]: 9/116 cut-off events. [2022-11-02 20:49:27,973 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:49:27,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 9/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 121 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-11-02 20:49:27,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 105 transitions, 215 flow [2022-11-02 20:49:27,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 105 transitions, 215 flow [2022-11-02 20:49:28,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:49:28,015 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;@86961cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:49:28,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-02 20:49:28,027 INFO L130 PetriNetUnfolder]: 2/45 cut-off events. [2022-11-02 20:49:28,027 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:49:28,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:28,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:28,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-02 20:49:28,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:28,035 INFO L85 PathProgramCache]: Analyzing trace with hash -302891798, now seen corresponding path program 1 times [2022-11-02 20:49:28,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:28,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463319544] [2022-11-02 20:49:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:28,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:49:28,228 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:49:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:49:28,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:49:28,308 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:49:28,309 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-02 20:49:28,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2022-11-02 20:49:28,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2022-11-02 20:49:28,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2022-11-02 20:49:28,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2022-11-02 20:49:28,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2022-11-02 20:49:28,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2022-11-02 20:49:28,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2022-11-02 20:49:28,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2022-11-02 20:49:28,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2022-11-02 20:49:28,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2022-11-02 20:49:28,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2022-11-02 20:49:28,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2022-11-02 20:49:28,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:49:28,316 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:49:28,321 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:49:28,321 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:49:28,423 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:49:28,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 180 transitions, 372 flow [2022-11-02 20:49:28,561 INFO L130 PetriNetUnfolder]: 17/204 cut-off events. [2022-11-02 20:49:28,561 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:49:28,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 204 events. 17/204 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 458 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 161. Up to 6 conditions per place. [2022-11-02 20:49:28,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 180 transitions, 372 flow [2022-11-02 20:49:28,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 180 transitions, 372 flow [2022-11-02 20:49:28,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:49:28,583 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;@86961cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:49:28,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-02 20:49:28,611 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2022-11-02 20:49:28,612 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:49:28,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:28,612 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:28,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-02 20:49:28,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1314204387, now seen corresponding path program 1 times [2022-11-02 20:49:28,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:28,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706610424] [2022-11-02 20:49:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:28,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:49:28,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:49:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:49:28,663 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:49:28,663 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:49:28,664 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-02 20:49:28,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-11-02 20:49:28,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-11-02 20:49:28,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-11-02 20:49:28,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-11-02 20:49:28,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-11-02 20:49:28,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-11-02 20:49:28,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-11-02 20:49:28,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-11-02 20:49:28,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-11-02 20:49:28,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-11-02 20:49:28,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-11-02 20:49:28,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-11-02 20:49:28,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-11-02 20:49:28,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-11-02 20:49:28,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-11-02 20:49:28,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-11-02 20:49:28,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-11-02 20:49:28,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-11-02 20:49:28,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:49:28,699 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:49:28,700 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:49:28,700 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:49:28,813 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:49:28,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 255 transitions, 531 flow [2022-11-02 20:49:28,958 INFO L130 PetriNetUnfolder]: 25/292 cut-off events. [2022-11-02 20:49:28,959 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:49:28,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 292 events. 25/292 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 902 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 235. Up to 8 conditions per place. [2022-11-02 20:49:28,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 255 transitions, 531 flow [2022-11-02 20:49:28,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 255 transitions, 531 flow [2022-11-02 20:49:28,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:49:28,977 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;@86961cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:49:28,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-02 20:49:28,995 INFO L130 PetriNetUnfolder]: 5/89 cut-off events. [2022-11-02 20:49:28,998 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:49:28,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:28,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:29,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-02 20:49:29,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:29,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1042028213, now seen corresponding path program 1 times [2022-11-02 20:49:29,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:29,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255661091] [2022-11-02 20:49:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:29,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:29,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:29,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:29,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255661091] [2022-11-02 20:49:29,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255661091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:29,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:29,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:49:29,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372762364] [2022-11-02 20:49:29,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:29,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:49:29,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:29,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:49:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:49:29,855 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 255 [2022-11-02 20:49:29,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 255 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:29,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:29,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 255 [2022-11-02 20:49:29,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:40,179 INFO L130 PetriNetUnfolder]: 13697/41264 cut-off events. [2022-11-02 20:49:40,179 INFO L131 PetriNetUnfolder]: For 2041/2041 co-relation queries the response was YES. [2022-11-02 20:49:40,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61734 conditions, 41264 events. 13697/41264 cut-off events. For 2041/2041 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 492421 event pairs, 3341 based on Foata normal form. 10336/47341 useless extension candidates. Maximal degree in co-relation 27813. Up to 9342 conditions per place. [2022-11-02 20:49:40,783 INFO L137 encePairwiseOnDemand]: 208/255 looper letters, 184 selfloop transitions, 36 changer transitions 0/394 dead transitions. [2022-11-02 20:49:40,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 394 transitions, 1297 flow [2022-11-02 20:49:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:49:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:49:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1427 transitions. [2022-11-02 20:49:40,812 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9326797385620915 [2022-11-02 20:49:40,813 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1427 transitions. [2022-11-02 20:49:40,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1427 transitions. [2022-11-02 20:49:40,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:40,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1427 transitions. [2022-11-02 20:49:40,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.83333333333334) internal successors, (1427), 6 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:40,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:40,847 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:40,850 INFO L175 Difference]: Start difference. First operand has 240 places, 255 transitions, 531 flow. Second operand 6 states and 1427 transitions. [2022-11-02 20:49:40,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 394 transitions, 1297 flow [2022-11-02 20:49:40,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 394 transitions, 1283 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-11-02 20:49:40,874 INFO L231 Difference]: Finished difference. Result has 229 places, 257 transitions, 715 flow [2022-11-02 20:49:40,877 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=715, PETRI_PLACES=229, PETRI_TRANSITIONS=257} [2022-11-02 20:49:40,883 INFO L287 CegarLoopForPetriNet]: 240 programPoint places, -11 predicate places. [2022-11-02 20:49:40,883 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 257 transitions, 715 flow [2022-11-02 20:49:40,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:40,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:40,886 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:40,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:49:40,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-02 20:49:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:40,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1186772407, now seen corresponding path program 1 times [2022-11-02 20:49:40,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:40,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090493565] [2022-11-02 20:49:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:40,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:49:40,923 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:49:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:49:40,964 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:49:40,966 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:49:40,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-02 20:49:40,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-11-02 20:49:40,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-11-02 20:49:40,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-11-02 20:49:40,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-11-02 20:49:40,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-11-02 20:49:40,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-11-02 20:49:40,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-11-02 20:49:40,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-11-02 20:49:40,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-11-02 20:49:40,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-11-02 20:49:40,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-11-02 20:49:40,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-11-02 20:49:40,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-11-02 20:49:40,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-11-02 20:49:40,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-11-02 20:49:40,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-11-02 20:49:40,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-11-02 20:49:40,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-11-02 20:49:40,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-11-02 20:49:40,977 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-11-02 20:49:40,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-11-02 20:49:40,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-11-02 20:49:40,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-11-02 20:49:40,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-11-02 20:49:40,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:49:40,984 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:49:40,985 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:49:40,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:49:41,090 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:49:41,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 330 transitions, 692 flow [2022-11-02 20:49:41,210 INFO L130 PetriNetUnfolder]: 33/380 cut-off events. [2022-11-02 20:49:41,210 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 20:49:41,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 380 events. 33/380 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1377 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 309. Up to 10 conditions per place. [2022-11-02 20:49:41,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 330 transitions, 692 flow [2022-11-02 20:49:41,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 330 transitions, 692 flow [2022-11-02 20:49:41,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:49:41,230 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;@86961cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:49:41,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-02 20:49:41,240 INFO L130 PetriNetUnfolder]: 4/83 cut-off events. [2022-11-02 20:49:41,241 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:49:41,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:41,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:41,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-02 20:49:41,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash 276674357, now seen corresponding path program 1 times [2022-11-02 20:49:41,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:41,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141872840] [2022-11-02 20:49:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:41,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:41,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:41,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141872840] [2022-11-02 20:49:41,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141872840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:41,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:41,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:49:41,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853082779] [2022-11-02 20:49:41,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:41,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:49:41,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:41,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:49:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:49:41,595 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 330 [2022-11-02 20:49:41,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 330 transitions, 692 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:41,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:41,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 330 [2022-11-02 20:49:41,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand