./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/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_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/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_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/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 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- 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 20:55:31,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:55:31,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:55:31,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:55:31,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:55:31,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:55:31,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:55:31,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:55:31,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:55:31,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:55:31,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:55:31,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:55:31,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:55:31,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:55:31,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:55:31,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:55:31,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:55:31,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:55:31,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:55:31,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:55:31,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:55:31,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:55:31,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:55:31,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:55:31,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:55:31,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:55:31,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:55:31,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:55:31,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:55:31,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:55:31,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:55:31,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:55:31,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:55:31,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:55:31,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:55:31,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:55:31,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:55:31,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:55:31,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:55:31,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:55:31,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:55:31,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:55:31,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:55:31,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:55:31,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:55:31,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:55:31,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:55:31,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:55:31,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:55:31,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:55:31,834 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:55:31,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:55:31,836 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:55:31,837 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:55:31,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:55:31,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:55:31,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:55:31,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:55:31,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:55:31,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:55:31,838 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:55:31,839 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:55:31,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:55:31,839 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:55:31,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:55:31,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:55:31,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:55:31,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:55:31,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:31,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:55:31,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:55:31,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:55:31,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:55:31,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:55:31,843 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:55:31,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:55:31,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:55:31,844 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_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2022-11-02 20:55:32,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:55:32,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:55:32,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:55:32,333 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:55:32,334 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:55:32,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/queue_ok.i [2022-11-02 20:55:32,450 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc/data/f87d53b92/a885dd62a8b64cee819e5c646bd5d935/FLAG7f5b0834f [2022-11-02 20:55:33,185 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:55:33,185 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/sv-benchmarks/c/pthread/queue_ok.i [2022-11-02 20:55:33,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc/data/f87d53b92/a885dd62a8b64cee819e5c646bd5d935/FLAG7f5b0834f [2022-11-02 20:55:33,458 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc/data/f87d53b92/a885dd62a8b64cee819e5c646bd5d935 [2022-11-02 20:55:33,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:55:33,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:55:33,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:33,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:55:33,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:55:33,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:33" (1/1) ... [2022-11-02 20:55:33,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d15ab76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:33, skipping insertion in model container [2022-11-02 20:55:33,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:33" (1/1) ... [2022-11-02 20:55:33,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:55:33,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:55:34,424 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_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2022-11-02 20:55:34,436 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_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2022-11-02 20:55:34,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:34,464 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:55:34,556 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_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/sv-benchmarks/c/pthread/queue_ok.i[43266,43279] [2022-11-02 20:55:34,560 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_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/sv-benchmarks/c/pthread/queue_ok.i[43543,43556] [2022-11-02 20:55:34,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:34,620 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:55:34,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34 WrapperNode [2022-11-02 20:55:34,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:34,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:34,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:55:34,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:55:34,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (1/1) ... [2022-11-02 20:55:34,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (1/1) ... [2022-11-02 20:55:34,741 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 389 [2022-11-02 20:55:34,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:34,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:55:34,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:55:34,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:55:34,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (1/1) ... [2022-11-02 20:55:34,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (1/1) ... [2022-11-02 20:55:34,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (1/1) ... [2022-11-02 20:55:34,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (1/1) ... [2022-11-02 20:55:34,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (1/1) ... [2022-11-02 20:55:34,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (1/1) ... [2022-11-02 20:55:34,873 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (1/1) ... [2022-11-02 20:55:34,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (1/1) ... [2022-11-02 20:55:34,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:55:34,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:55:34,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:55:34,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:55:34,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (1/1) ... [2022-11-02 20:55:34,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:34,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:34,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:55:34,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99d08fb7-1136-4adc-b6bd-c6ed4d44a8a4/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:55:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-02 20:55:35,013 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-02 20:55:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-02 20:55:35,014 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-02 20:55:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:55:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:55:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:55:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:55:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:55:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:55:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:55:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:55:35,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:55:35,017 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 20:55:35,256 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:55:35,259 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:55:36,213 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:55:36,225 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:55:36,225 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:55:36,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:36 BoogieIcfgContainer [2022-11-02 20:55:36,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:55:36,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:55:36,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:55:36,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:55:36,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:55:33" (1/3) ... [2022-11-02 20:55:36,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53981ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:36, skipping insertion in model container [2022-11-02 20:55:36,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:34" (2/3) ... [2022-11-02 20:55:36,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53981ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:36, skipping insertion in model container [2022-11-02 20:55:36,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:36" (3/3) ... [2022-11-02 20:55:36,239 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2022-11-02 20:55:36,251 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:55:36,268 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:55:36,268 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2022-11-02 20:55:36,269 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:55:36,545 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:55:36,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 449 transitions, 914 flow [2022-11-02 20:55:36,909 INFO L130 PetriNetUnfolder]: 13/447 cut-off events. [2022-11-02 20:55:36,910 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:55:36,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 447 events. 13/447 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 793 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2022-11-02 20:55:36,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 443 places, 449 transitions, 914 flow [2022-11-02 20:55:36,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 431 places, 437 transitions, 883 flow [2022-11-02 20:55:36,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:55:36,978 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;@61f5936f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:55:36,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2022-11-02 20:55:36,986 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-02 20:55:36,986 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:55:36,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:55:36,987 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] [2022-11-02 20:55:36,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-02 20:55:36,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:36,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1541684088, now seen corresponding path program 1 times [2022-11-02 20:55:37,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:37,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561770620] [2022-11-02 20:55:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:37,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:37,422 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 20:55:37,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:37,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561770620] [2022-11-02 20:55:37,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561770620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:37,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:37,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:55:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266876902] [2022-11-02 20:55:37,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:37,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:37,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:37,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:37,509 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 449 [2022-11-02 20:55:37,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 437 transitions, 883 flow. Second operand has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 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 20:55:37,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:55:37,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 449 [2022-11-02 20:55:37,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:55:37,883 INFO L130 PetriNetUnfolder]: 42/754 cut-off events. [2022-11-02 20:55:37,883 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-02 20:55:37,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 754 events. 42/754 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2916 event pairs, 27 based on Foata normal form. 10/668 useless extension candidates. Maximal degree in co-relation 687. Up to 70 conditions per place. [2022-11-02 20:55:37,899 INFO L137 encePairwiseOnDemand]: 442/449 looper letters, 15 selfloop transitions, 2 changer transitions 0/428 dead transitions. [2022-11-02 20:55:37,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 428 transitions, 899 flow [2022-11-02 20:55:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:55:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:55:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1291 transitions. [2022-11-02 20:55:37,930 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9584261321455085 [2022-11-02 20:55:37,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1291 transitions. [2022-11-02 20:55:37,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1291 transitions. [2022-11-02 20:55:37,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:55:37,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1291 transitions. [2022-11-02 20:55:37,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 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 20:55:37,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 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 20:55:37,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 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 20:55:37,969 INFO L175 Difference]: Start difference. First operand has 431 places, 437 transitions, 883 flow. Second operand 3 states and 1291 transitions. [2022-11-02 20:55:37,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 428 transitions, 899 flow [2022-11-02 20:55:37,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 428 transitions, 894 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:55:37,997 INFO L231 Difference]: Finished difference. Result has 425 places, 428 transitions, 864 flow [2022-11-02 20:55:38,000 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=864, PETRI_PLACES=425, PETRI_TRANSITIONS=428} [2022-11-02 20:55:38,005 INFO L287 CegarLoopForPetriNet]: 431 programPoint places, -6 predicate places. [2022-11-02 20:55:38,006 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 428 transitions, 864 flow [2022-11-02 20:55:38,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 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 20:55:38,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:55:38,008 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, 1, 1, 1, 1] [2022-11-02 20:55:38,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:55:38,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-02 20:55:38,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:38,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1205553850, now seen corresponding path program 1 times [2022-11-02 20:55:38,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:38,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233561245] [2022-11-02 20:55:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:38,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:38,179 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 20:55:38,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:38,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233561245] [2022-11-02 20:55:38,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233561245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:38,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:38,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:55:38,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565713343] [2022-11-02 20:55:38,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:38,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:38,194 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 449 [2022-11-02 20:55:38,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 428 transitions, 864 flow. Second operand has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 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 20:55:38,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:55:38,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 449 [2022-11-02 20:55:38,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:55:38,536 INFO L130 PetriNetUnfolder]: 53/835 cut-off events. [2022-11-02 20:55:38,537 INFO L131 PetriNetUnfolder]: For 14/25 co-relation queries the response was YES. [2022-11-02 20:55:38,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 835 events. 53/835 cut-off events. For 14/25 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3257 event pairs, 27 based on Foata normal form. 0/729 useless extension candidates. Maximal degree in co-relation 885. Up to 77 conditions per place. [2022-11-02 20:55:38,552 INFO L137 encePairwiseOnDemand]: 446/449 looper letters, 15 selfloop transitions, 2 changer transitions 0/427 dead transitions. [2022-11-02 20:55:38,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 427 transitions, 896 flow [2022-11-02 20:55:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:55:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:55:38,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1287 transitions. [2022-11-02 20:55:38,559 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.955456570155902 [2022-11-02 20:55:38,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1287 transitions. [2022-11-02 20:55:38,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1287 transitions. [2022-11-02 20:55:38,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:55:38,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1287 transitions. [2022-11-02 20:55:38,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 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 20:55:38,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 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 20:55:38,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 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 20:55:38,571 INFO L175 Difference]: Start difference. First operand has 425 places, 428 transitions, 864 flow. Second operand 3 states and 1287 transitions. [2022-11-02 20:55:38,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 427 transitions, 896 flow [2022-11-02 20:55:38,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 427 transitions, 892 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:55:38,585 INFO L231 Difference]: Finished difference. Result has 424 places, 427 transitions, 862 flow [2022-11-02 20:55:38,586 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=862, PETRI_PLACES=424, PETRI_TRANSITIONS=427} [2022-11-02 20:55:38,587 INFO L287 CegarLoopForPetriNet]: 431 programPoint places, -7 predicate places. [2022-11-02 20:55:38,587 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 427 transitions, 862 flow [2022-11-02 20:55:38,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 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 20:55:38,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:55:38,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:38,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:55:38,590 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-02 20:55:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash -690922228, now seen corresponding path program 1 times [2022-11-02 20:55:38,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:38,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511004488] [2022-11-02 20:55:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:38,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:39,288 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 20:55:39,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:39,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511004488] [2022-11-02 20:55:39,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511004488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:39,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:39,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:55:39,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555601770] [2022-11-02 20:55:39,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:39,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:55:39,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:39,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:55:39,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:55:39,300 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 449 [2022-11-02 20:55:39,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 427 transitions, 862 flow. Second operand has 6 states, 6 states have (on average 270.5) internal successors, (1623), 6 states have internal predecessors, (1623), 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 20:55:39,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:55:39,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 449 [2022-11-02 20:55:39,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:07,546 INFO L130 PetriNetUnfolder]: 49837/114533 cut-off events. [2022-11-02 20:56:07,547 INFO L131 PetriNetUnfolder]: For 132/132 co-relation queries the response was YES. [2022-11-02 20:56:07,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190081 conditions, 114533 events. 49837/114533 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 1230748 event pairs, 47568 based on Foata normal form. 0/98421 useless extension candidates. Maximal degree in co-relation 190035. Up to 75428 conditions per place. [2022-11-02 20:56:08,347 INFO L137 encePairwiseOnDemand]: 443/449 looper letters, 166 selfloop transitions, 5 changer transitions 0/426 dead transitions. [2022-11-02 20:56:08,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 426 transitions, 1202 flow [2022-11-02 20:56:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:56:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:56:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1786 transitions. [2022-11-02 20:56:08,356 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6629547141796585 [2022-11-02 20:56:08,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1786 transitions. [2022-11-02 20:56:08,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1786 transitions. [2022-11-02 20:56:08,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:08,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1786 transitions. [2022-11-02 20:56:08,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 297.6666666666667) internal successors, (1786), 6 states have internal predecessors, (1786), 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 20:56:08,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 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 20:56:08,371 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 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 20:56:08,371 INFO L175 Difference]: Start difference. First operand has 424 places, 427 transitions, 862 flow. Second operand 6 states and 1786 transitions. [2022-11-02 20:56:08,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 426 transitions, 1202 flow [2022-11-02 20:56:08,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 426 transitions, 1198 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:56:08,384 INFO L231 Difference]: Finished difference. Result has 426 places, 426 transitions, 866 flow [2022-11-02 20:56:08,385 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=866, PETRI_PLACES=426, PETRI_TRANSITIONS=426} [2022-11-02 20:56:08,388 INFO L287 CegarLoopForPetriNet]: 431 programPoint places, -5 predicate places. [2022-11-02 20:56:08,389 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 426 transitions, 866 flow [2022-11-02 20:56:08,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 270.5) internal successors, (1623), 6 states have internal predecessors, (1623), 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 20:56:08,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:08,391 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, 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 20:56:08,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:56:08,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2022-11-02 20:56:08,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:08,392 INFO L85 PathProgramCache]: Analyzing trace with hash 177020895, now seen corresponding path program 1 times [2022-11-02 20:56:08,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:08,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620332706] [2022-11-02 20:56:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:08,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:08,894 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 20:56:08,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:08,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620332706] [2022-11-02 20:56:08,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620332706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:08,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:08,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:08,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725422518] [2022-11-02 20:56:08,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:08,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:08,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:08,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:08,906 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 449 [2022-11-02 20:56:08,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 426 transitions, 866 flow. Second operand has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 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 20:56:08,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:08,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 449 [2022-11-02 20:56:08,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand