./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a --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 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- 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-b5237d8 [2022-11-21 17:04:11,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:04:11,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:04:11,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:04:11,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:04:11,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:04:11,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:04:11,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:04:11,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:04:11,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:04:11,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:04:11,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:04:11,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:04:11,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:04:11,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:04:11,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:04:11,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:04:11,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:04:11,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:04:11,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:04:11,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:04:11,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:04:11,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:04:11,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:04:11,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:04:11,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:04:11,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:04:11,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:04:11,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:04:11,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:04:11,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:04:11,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:04:11,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:04:11,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:04:11,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:04:11,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:04:11,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:04:11,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:04:11,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:04:11,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:04:11,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:04:11,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-21 17:04:11,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:04:11,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:04:11,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:04:11,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:04:11,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:04:11,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:04:11,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:04:11,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:04:11,928 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:04:11,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:04:11,929 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:04:11,930 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:04:11,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:04:11,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:04:11,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:04:11,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:04:11,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:04:11,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:04:11,931 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-21 17:04:11,932 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:04:11,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:04:11,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:04:11,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:04:11,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:04:11,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:04:11,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:04:11,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:04:11,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:04:11,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:04:11,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:04:11,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:04:11,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:04:11,935 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:04:11,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:04:11,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:04:11,936 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_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2022-11-21 17:04:12,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:04:12,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:04:12,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:04:12,278 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:04:12,279 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:04:12,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/queue_longer.i [2022-11-21 17:04:15,351 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:04:15,710 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:04:15,710 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/sv-benchmarks/c/pthread/queue_longer.i [2022-11-21 17:04:15,726 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/data/65f05c4a7/f84e42c078294c4abb9b102b94b65f3c/FLAGb8b4161d4 [2022-11-21 17:04:15,752 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/data/65f05c4a7/f84e42c078294c4abb9b102b94b65f3c [2022-11-21 17:04:15,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:04:15,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:04:15,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:04:15,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:04:15,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:04:15,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:04:15" (1/1) ... [2022-11-21 17:04:15,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28dc8763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:15, skipping insertion in model container [2022-11-21 17:04:15,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:04:15" (1/1) ... [2022-11-21 17:04:15,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:04:15,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:04:16,401 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_b5e6c965-2650-4414-9645-71e3713d4084/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-21 17:04:16,408 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_b5e6c965-2650-4414-9645-71e3713d4084/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-21 17:04:16,412 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_b5e6c965-2650-4414-9645-71e3713d4084/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-21 17:04:16,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:04:16,432 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:04:16,497 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_b5e6c965-2650-4414-9645-71e3713d4084/sv-benchmarks/c/pthread/queue_longer.i[43296,43309] [2022-11-21 17:04:16,500 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_b5e6c965-2650-4414-9645-71e3713d4084/sv-benchmarks/c/pthread/queue_longer.i[43503,43516] [2022-11-21 17:04:16,504 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_b5e6c965-2650-4414-9645-71e3713d4084/sv-benchmarks/c/pthread/queue_longer.i[43783,43796] [2022-11-21 17:04:16,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:04:16,572 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:04:16,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16 WrapperNode [2022-11-21 17:04:16,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:04:16,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:04:16,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:04:16,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:04:16,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (1/1) ... [2022-11-21 17:04:16,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (1/1) ... [2022-11-21 17:04:16,689 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 481 [2022-11-21 17:04:16,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:04:16,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:04:16,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:04:16,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:04:16,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (1/1) ... [2022-11-21 17:04:16,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (1/1) ... [2022-11-21 17:04:16,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (1/1) ... [2022-11-21 17:04:16,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (1/1) ... [2022-11-21 17:04:16,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (1/1) ... [2022-11-21 17:04:16,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (1/1) ... [2022-11-21 17:04:16,807 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (1/1) ... [2022-11-21 17:04:16,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (1/1) ... [2022-11-21 17:04:16,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:04:16,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:04:16,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:04:16,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:04:16,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (1/1) ... [2022-11-21 17:04:16,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:04:16,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:04:16,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:04:16,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e6c965-2650-4414-9645-71e3713d4084/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:04:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-21 17:04:16,928 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-21 17:04:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-21 17:04:16,929 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-21 17:04:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:04:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:04:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:04:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:04:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 17:04:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:04:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:04:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:04:16,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:04:16,932 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:04:17,141 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:04:17,144 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:04:18,257 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:04:18,277 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:04:18,278 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 17:04:18,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:04:18 BoogieIcfgContainer [2022-11-21 17:04:18,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:04:18,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:04:18,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:04:18,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:04:18,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:04:15" (1/3) ... [2022-11-21 17:04:18,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ba0e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:04:18, skipping insertion in model container [2022-11-21 17:04:18,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:04:16" (2/3) ... [2022-11-21 17:04:18,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ba0e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:04:18, skipping insertion in model container [2022-11-21 17:04:18,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:04:18" (3/3) ... [2022-11-21 17:04:18,294 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2022-11-21 17:04:18,308 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:04:18,319 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:04:18,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2022-11-21 17:04:18,320 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:04:18,543 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 17:04:18,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 553 transitions, 1122 flow [2022-11-21 17:04:18,959 INFO L130 PetriNetUnfolder]: 15/551 cut-off events. [2022-11-21 17:04:18,999 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 17:04:19,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 551 events. 15/551 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 791 event pairs, 0 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 421. Up to 2 conditions per place. [2022-11-21 17:04:19,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 545 places, 553 transitions, 1122 flow [2022-11-21 17:04:19,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 533 places, 541 transitions, 1091 flow [2022-11-21 17:04:19,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:04:19,062 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;@7b247f0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:04:19,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-11-21 17:04:19,068 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-11-21 17:04:19,069 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:04:19,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:19,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:19,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-21 17:04:19,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1503232977, now seen corresponding path program 1 times [2022-11-21 17:04:19,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:19,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958362263] [2022-11-21 17:04:19,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:19,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:19,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:19,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958362263] [2022-11-21 17:04:19,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958362263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:19,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:19,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:04:19,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988018990] [2022-11-21 17:04:19,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:19,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:04:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:19,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:04:19,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:04:19,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 525 out of 553 [2022-11-21 17:04:19,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 541 transitions, 1091 flow. Second operand has 3 states, 3 states have (on average 526.3333333333334) internal successors, (1579), 3 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:19,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:19,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 525 of 553 [2022-11-21 17:04:19,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:20,012 INFO L130 PetriNetUnfolder]: 59/1325 cut-off events. [2022-11-21 17:04:20,012 INFO L131 PetriNetUnfolder]: For 32/33 co-relation queries the response was YES. [2022-11-21 17:04:20,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 1325 events. 59/1325 cut-off events. For 32/33 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 5630 event pairs, 27 based on Foata normal form. 23/1183 useless extension candidates. Maximal degree in co-relation 1149. Up to 79 conditions per place. [2022-11-21 17:04:20,028 INFO L137 encePairwiseOnDemand]: 545/553 looper letters, 15 selfloop transitions, 2 changer transitions 0/530 dead transitions. [2022-11-21 17:04:20,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 530 transitions, 1103 flow [2022-11-21 17:04:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:04:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:04:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1598 transitions. [2022-11-21 17:04:20,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9632308619650392 [2022-11-21 17:04:20,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1598 transitions. [2022-11-21 17:04:20,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1598 transitions. [2022-11-21 17:04:20,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:20,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1598 transitions. [2022-11-21 17:04:20,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 532.6666666666666) internal successors, (1598), 3 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:20,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:20,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:20,091 INFO L175 Difference]: Start difference. First operand has 533 places, 541 transitions, 1091 flow. Second operand 3 states and 1598 transitions. [2022-11-21 17:04:20,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 530 transitions, 1103 flow [2022-11-21 17:04:20,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 530 transitions, 1098 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:04:20,116 INFO L231 Difference]: Finished difference. Result has 526 places, 530 transitions, 1068 flow [2022-11-21 17:04:20,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1068, PETRI_PLACES=526, PETRI_TRANSITIONS=530} [2022-11-21 17:04:20,126 INFO L288 CegarLoopForPetriNet]: 533 programPoint places, -7 predicate places. [2022-11-21 17:04:20,126 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 530 transitions, 1068 flow [2022-11-21 17:04:20,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 526.3333333333334) internal successors, (1579), 3 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:20,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:20,127 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:20,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:04:20,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-21 17:04:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2137247129, now seen corresponding path program 1 times [2022-11-21 17:04:20,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:20,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516113687] [2022-11-21 17:04:20,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:20,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:20,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:20,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516113687] [2022-11-21 17:04:20,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516113687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:20,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:20,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:04:20,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447725484] [2022-11-21 17:04:20,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:20,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:04:20,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:04:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:04:20,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 525 out of 553 [2022-11-21 17:04:20,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 530 transitions, 1068 flow. Second operand has 3 states, 3 states have (on average 526.3333333333334) internal successors, (1579), 3 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:20,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:20,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 525 of 553 [2022-11-21 17:04:20,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:04:20,835 INFO L130 PetriNetUnfolder]: 71/1702 cut-off events. [2022-11-21 17:04:20,836 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-21 17:04:20,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1802 conditions, 1702 events. 71/1702 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6889 event pairs, 27 based on Foata normal form. 0/1489 useless extension candidates. Maximal degree in co-relation 1762. Up to 85 conditions per place. [2022-11-21 17:04:20,860 INFO L137 encePairwiseOnDemand]: 550/553 looper letters, 15 selfloop transitions, 2 changer transitions 0/529 dead transitions. [2022-11-21 17:04:20,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 529 transitions, 1100 flow [2022-11-21 17:04:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:04:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 17:04:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1593 transitions. [2022-11-21 17:04:20,865 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9602169981916817 [2022-11-21 17:04:20,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1593 transitions. [2022-11-21 17:04:20,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1593 transitions. [2022-11-21 17:04:20,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:04:20,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1593 transitions. [2022-11-21 17:04:20,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 531.0) internal successors, (1593), 3 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:20,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:20,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:20,875 INFO L175 Difference]: Start difference. First operand has 526 places, 530 transitions, 1068 flow. Second operand 3 states and 1593 transitions. [2022-11-21 17:04:20,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 529 transitions, 1100 flow [2022-11-21 17:04:20,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 529 transitions, 1096 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 17:04:20,886 INFO L231 Difference]: Finished difference. Result has 525 places, 529 transitions, 1066 flow [2022-11-21 17:04:20,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1066, PETRI_PLACES=525, PETRI_TRANSITIONS=529} [2022-11-21 17:04:20,889 INFO L288 CegarLoopForPetriNet]: 533 programPoint places, -8 predicate places. [2022-11-21 17:04:20,889 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 529 transitions, 1066 flow [2022-11-21 17:04:20,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 526.3333333333334) internal successors, (1579), 3 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:20,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:04:20,891 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:04:20,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:04:20,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-21 17:04:20,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:04:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1920164171, now seen corresponding path program 1 times [2022-11-21 17:04:20,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:04:20,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432769489] [2022-11-21 17:04:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:04:20,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:04:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:04:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:04:21,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:04:21,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432769489] [2022-11-21 17:04:21,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432769489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:04:21,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:04:21,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:04:21,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872636589] [2022-11-21 17:04:21,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:04:21,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:04:21,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:04:21,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:04:21,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:04:21,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 553 [2022-11-21 17:04:21,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 529 transitions, 1066 flow. Second operand has 6 states, 6 states have (on average 318.5) internal successors, (1911), 6 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:21,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:04:21,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 553 [2022-11-21 17:04:21,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand