./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b 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_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro --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 cb0da49952f084f4179c44b957c91689c392bf769782a6b0853667237fdff1db --- 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-8393723 [2022-11-18 18:28:32,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:28:32,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:28:32,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:28:32,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:28:32,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:28:32,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:28:32,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:28:32,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:28:32,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:28:32,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:28:32,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:28:32,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:28:32,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:28:32,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:28:32,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:28:32,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:28:32,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:28:32,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:28:32,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:28:32,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:28:32,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:28:32,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:28:32,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:28:32,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:28:32,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:28:32,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:28:32,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:28:32,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:28:32,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:28:32,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:28:32,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:28:32,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:28:32,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:28:32,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:28:32,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:28:32,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:28:32,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:28:32,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:28:32,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:28:32,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:28:32,793 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:28:32,818 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:28:32,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:28:32,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:28:32,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:28:32,820 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:28:32,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:28:32,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:28:32,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:28:32,821 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:28:32,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:28:32,822 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:28:32,822 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:28:32,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:28:32,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:28:32,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:28:32,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:28:32,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:28:32,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:28:32,823 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:28:32,824 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:28:32,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:28:32,824 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:28:32,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:28:32,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:28:32,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:28:32,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:28:32,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:28:32,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:28:32,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:28:32,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:28:32,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:28:32,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:28:32,827 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:28:32,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:28:32,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:28:32,827 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_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb0da49952f084f4179c44b957c91689c392bf769782a6b0853667237fdff1db [2022-11-18 18:28:33,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:28:33,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:28:33,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:28:33,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:28:33,142 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:28:33,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i [2022-11-18 18:28:33,216 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/data/41bed6836/67913dc89320463fab458a2fe63070b5/FLAG3b5370dc5 [2022-11-18 18:28:33,765 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:28:33,765 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i [2022-11-18 18:28:33,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/data/41bed6836/67913dc89320463fab458a2fe63070b5/FLAG3b5370dc5 [2022-11-18 18:28:34,199 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/data/41bed6836/67913dc89320463fab458a2fe63070b5 [2022-11-18 18:28:34,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:28:34,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:28:34,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:28:34,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:28:34,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:28:34,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:34,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a17a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34, skipping insertion in model container [2022-11-18 18:28:34,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:34,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:28:34,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:28:34,810 WARN L234 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_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i[29939,29952] [2022-11-18 18:28:34,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:28:34,832 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:28:34,878 WARN L234 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_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i[29939,29952] [2022-11-18 18:28:34,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:28:34,927 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:28:34,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34 WrapperNode [2022-11-18 18:28:34,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:28:34,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:28:34,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:28:34,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:28:34,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:34,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:34,982 INFO L138 Inliner]: procedures = 166, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-11-18 18:28:34,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:28:34,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:28:34,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:28:34,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:28:34,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:34,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:35,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:35,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:35,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:35,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:35,022 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:35,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:35,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:28:35,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:28:35,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:28:35,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:28:35,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (1/1) ... [2022-11-18 18:28:35,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:28:35,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:35,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:28:35,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f4a266-e836-4dbb-9da4-1ba4fb70f4b8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:28:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-18 18:28:35,113 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-18 18:28:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:28:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:28:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:28:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:28:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:28:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:28:35,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:28:35,116 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:28:35,254 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:28:35,256 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:28:35,400 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:28:35,406 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:28:35,407 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:28:35,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:28:35 BoogieIcfgContainer [2022-11-18 18:28:35,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:28:35,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:28:35,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:28:35,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:28:35,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:28:34" (1/3) ... [2022-11-18 18:28:35,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e02cd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:28:35, skipping insertion in model container [2022-11-18 18:28:35,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:34" (2/3) ... [2022-11-18 18:28:35,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e02cd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:28:35, skipping insertion in model container [2022-11-18 18:28:35,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:28:35" (3/3) ... [2022-11-18 18:28:35,417 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs-b.i [2022-11-18 18:28:35,426 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:28:35,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:28:35,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-18 18:28:35,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:28:35,501 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:28:35,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 64 transitions, 133 flow [2022-11-18 18:28:35,630 INFO L130 PetriNetUnfolder]: 4/75 cut-off events. [2022-11-18 18:28:35,631 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:28:35,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 4/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2022-11-18 18:28:35,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 64 transitions, 133 flow [2022-11-18 18:28:35,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 64 transitions, 133 flow [2022-11-18 18:28:35,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:28:35,683 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;@3b842df5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:28:35,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-18 18:28:35,694 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-11-18 18:28:35,694 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:28:35,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:35,695 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] [2022-11-18 18:28:35,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-18 18:28:35,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash 341928378, now seen corresponding path program 1 times [2022-11-18 18:28:35,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:35,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60686848] [2022-11-18 18:28:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:35,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:35,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60686848] [2022-11-18 18:28:35,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60686848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:35,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:35,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:35,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416961348] [2022-11-18 18:28:35,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:35,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:35,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:36,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:36,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 64 [2022-11-18 18:28:36,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2022-11-18 18:28:36,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:36,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 64 [2022-11-18 18:28:36,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:36,054 INFO L130 PetriNetUnfolder]: 1/58 cut-off events. [2022-11-18 18:28:36,054 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:28:36,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 58 events. 1/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 0 based on Foata normal form. 8/60 useless extension candidates. Maximal degree in co-relation 42. Up to 5 conditions per place. [2022-11-18 18:28:36,074 INFO L137 encePairwiseOnDemand]: 58/64 looper letters, 4 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-11-18 18:28:36,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 125 flow [2022-11-18 18:28:36,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2022-11-18 18:28:36,102 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.890625 [2022-11-18 18:28:36,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2022-11-18 18:28:36,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2022-11-18 18:28:36,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:36,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2022-11-18 18:28:36,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2022-11-18 18:28:36,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2022-11-18 18:28:36,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2022-11-18 18:28:36,119 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 133 flow. Second operand 3 states and 171 transitions. [2022-11-18 18:28:36,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 125 flow [2022-11-18 18:28:36,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 125 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:28:36,125 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 117 flow [2022-11-18 18:28:36,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2022-11-18 18:28:36,132 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2022-11-18 18:28:36,132 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 117 flow [2022-11-18 18:28:36,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2022-11-18 18:28:36,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:36,133 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:36,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:28:36,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-11-18 18:28:36,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:36,135 INFO L85 PathProgramCache]: Analyzing trace with hash -763135107, now seen corresponding path program 1 times [2022-11-18 18:28:36,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:36,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569349601] [2022-11-18 18:28:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:36,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:28:36,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:28:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:28:36,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:28:36,211 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:28:36,213 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-18 18:28:36,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-18 18:28:36,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-18 18:28:36,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-18 18:28:36,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-18 18:28:36,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-18 18:28:36,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-18 18:28:36,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-18 18:28:36,217 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-18 18:28:36,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-18 18:28:36,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-18 18:28:36,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:28:36,219 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 18:28:36,222 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:28:36,222 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 18:28:36,255 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:28:36,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 210 flow [2022-11-18 18:28:36,295 INFO L130 PetriNetUnfolder]: 7/123 cut-off events. [2022-11-18 18:28:36,295 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:28:36,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 123 events. 7/123 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 270 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2022-11-18 18:28:36,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 99 transitions, 210 flow [2022-11-18 18:28:36,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 99 transitions, 210 flow [2022-11-18 18:28:36,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:28:36,303 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;@3b842df5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:28:36,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-18 18:28:36,321 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-11-18 18:28:36,321 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:28:36,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:36,322 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] [2022-11-18 18:28:36,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-11-18 18:28:36,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:36,323 INFO L85 PathProgramCache]: Analyzing trace with hash 980846205, now seen corresponding path program 1 times [2022-11-18 18:28:36,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:36,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685360523] [2022-11-18 18:28:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:36,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:36,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:36,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685360523] [2022-11-18 18:28:36,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685360523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:36,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:36,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:36,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243747665] [2022-11-18 18:28:36,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:36,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:36,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:36,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:36,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:36,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 99 [2022-11-18 18:28:36,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2022-11-18 18:28:36,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:36,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 99 [2022-11-18 18:28:36,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:36,622 INFO L130 PetriNetUnfolder]: 54/441 cut-off events. [2022-11-18 18:28:36,623 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-18 18:28:36,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 441 events. 54/441 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2368 event pairs, 13 based on Foata normal form. 78/431 useless extension candidates. Maximal degree in co-relation 326. Up to 61 conditions per place. [2022-11-18 18:28:36,629 INFO L137 encePairwiseOnDemand]: 87/99 looper letters, 19 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2022-11-18 18:28:36,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 99 transitions, 265 flow [2022-11-18 18:28:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-11-18 18:28:36,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9158249158249159 [2022-11-18 18:28:36,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-11-18 18:28:36,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-11-18 18:28:36,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:36,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-11-18 18:28:36,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2022-11-18 18:28:36,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2022-11-18 18:28:36,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2022-11-18 18:28:36,638 INFO L175 Difference]: Start difference. First operand has 99 places, 99 transitions, 210 flow. Second operand 3 states and 272 transitions. [2022-11-18 18:28:36,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 99 transitions, 265 flow [2022-11-18 18:28:36,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 99 transitions, 263 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-18 18:28:36,643 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 238 flow [2022-11-18 18:28:36,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2022-11-18 18:28:36,644 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -4 predicate places. [2022-11-18 18:28:36,645 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 238 flow [2022-11-18 18:28:36,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2022-11-18 18:28:36,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:36,645 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] [2022-11-18 18:28:36,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:28:36,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-11-18 18:28:36,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:36,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2000162403, now seen corresponding path program 1 times [2022-11-18 18:28:36,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:36,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706142250] [2022-11-18 18:28:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:36,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:36,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:36,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706142250] [2022-11-18 18:28:36,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706142250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:36,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:36,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:36,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236400676] [2022-11-18 18:28:36,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:36,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:36,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:36,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:36,712 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2022-11-18 18:28:36,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2022-11-18 18:28:36,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:36,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2022-11-18 18:28:36,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:36,911 INFO L130 PetriNetUnfolder]: 112/671 cut-off events. [2022-11-18 18:28:36,912 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-18 18:28:36,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 671 events. 112/671 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4466 event pairs, 32 based on Foata normal form. 0/566 useless extension candidates. Maximal degree in co-relation 845. Up to 148 conditions per place. [2022-11-18 18:28:36,919 INFO L137 encePairwiseOnDemand]: 85/99 looper letters, 25 selfloop transitions, 10 changer transitions 0/109 dead transitions. [2022-11-18 18:28:36,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 109 transitions, 343 flow [2022-11-18 18:28:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:36,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2022-11-18 18:28:36,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8686868686868687 [2022-11-18 18:28:36,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2022-11-18 18:28:36,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2022-11-18 18:28:36,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:36,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2022-11-18 18:28:36,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2022-11-18 18:28:36,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2022-11-18 18:28:36,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2022-11-18 18:28:36,925 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 238 flow. Second operand 3 states and 258 transitions. [2022-11-18 18:28:36,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 109 transitions, 343 flow [2022-11-18 18:28:36,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 109 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:36,931 INFO L231 Difference]: Finished difference. Result has 97 places, 104 transitions, 314 flow [2022-11-18 18:28:36,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=97, PETRI_TRANSITIONS=104} [2022-11-18 18:28:36,932 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -2 predicate places. [2022-11-18 18:28:36,932 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 104 transitions, 314 flow [2022-11-18 18:28:36,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2022-11-18 18:28:36,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:36,933 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] [2022-11-18 18:28:36,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:28:36,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-11-18 18:28:36,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:36,934 INFO L85 PathProgramCache]: Analyzing trace with hash 253180552, now seen corresponding path program 1 times [2022-11-18 18:28:36,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:36,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177586673] [2022-11-18 18:28:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:36,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:36,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:36,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177586673] [2022-11-18 18:28:36,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177586673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:36,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:36,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:36,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028209836] [2022-11-18 18:28:36,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:36,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:36,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:36,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:36,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:36,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 99 [2022-11-18 18:28:36,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 104 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2022-11-18 18:28:36,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:36,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 99 [2022-11-18 18:28:36,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:37,184 INFO L130 PetriNetUnfolder]: 139/794 cut-off events. [2022-11-18 18:28:37,184 INFO L131 PetriNetUnfolder]: For 251/274 co-relation queries the response was YES. [2022-11-18 18:28:37,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1445 conditions, 794 events. 139/794 cut-off events. For 251/274 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5578 event pairs, 49 based on Foata normal form. 3/692 useless extension candidates. Maximal degree in co-relation 1284. Up to 254 conditions per place. [2022-11-18 18:28:37,192 INFO L137 encePairwiseOnDemand]: 92/99 looper letters, 39 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2022-11-18 18:28:37,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 120 transitions, 479 flow [2022-11-18 18:28:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:37,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:37,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2022-11-18 18:28:37,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.835016835016835 [2022-11-18 18:28:37,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2022-11-18 18:28:37,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2022-11-18 18:28:37,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:37,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2022-11-18 18:28:37,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2022-11-18 18:28:37,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2022-11-18 18:28:37,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2022-11-18 18:28:37,201 INFO L175 Difference]: Start difference. First operand has 97 places, 104 transitions, 314 flow. Second operand 3 states and 248 transitions. [2022-11-18 18:28:37,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 120 transitions, 479 flow [2022-11-18 18:28:37,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 120 transitions, 449 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:37,213 INFO L231 Difference]: Finished difference. Result has 99 places, 111 transitions, 370 flow [2022-11-18 18:28:37,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=99, PETRI_TRANSITIONS=111} [2022-11-18 18:28:37,216 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 0 predicate places. [2022-11-18 18:28:37,216 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 111 transitions, 370 flow [2022-11-18 18:28:37,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2022-11-18 18:28:37,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:37,217 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:37,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:28:37,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-11-18 18:28:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1844260839, now seen corresponding path program 1 times [2022-11-18 18:28:37,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:37,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481690118] [2022-11-18 18:28:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:37,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:28:37,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:28:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:28:37,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:28:37,307 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:28:37,308 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2022-11-18 18:28:37,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2022-11-18 18:28:37,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2022-11-18 18:28:37,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2022-11-18 18:28:37,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2022-11-18 18:28:37,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2022-11-18 18:28:37,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2022-11-18 18:28:37,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2022-11-18 18:28:37,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2022-11-18 18:28:37,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2022-11-18 18:28:37,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2022-11-18 18:28:37,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2022-11-18 18:28:37,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2022-11-18 18:28:37,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2022-11-18 18:28:37,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2022-11-18 18:28:37,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2022-11-18 18:28:37,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:28:37,316 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-18 18:28:37,318 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:28:37,318 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 18:28:37,374 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:28:37,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 134 transitions, 289 flow [2022-11-18 18:28:37,421 INFO L130 PetriNetUnfolder]: 10/171 cut-off events. [2022-11-18 18:28:37,421 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 18:28:37,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 171 events. 10/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 483 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 127. Up to 8 conditions per place. [2022-11-18 18:28:37,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 134 transitions, 289 flow [2022-11-18 18:28:37,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 134 transitions, 289 flow [2022-11-18 18:28:37,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:28:37,439 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;@3b842df5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:28:37,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 18:28:37,448 INFO L130 PetriNetUnfolder]: 2/34 cut-off events. [2022-11-18 18:28:37,449 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:28:37,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:37,450 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] [2022-11-18 18:28:37,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-18 18:28:37,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:37,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1321755807, now seen corresponding path program 1 times [2022-11-18 18:28:37,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:37,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132840347] [2022-11-18 18:28:37,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:37,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:37,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:37,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132840347] [2022-11-18 18:28:37,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132840347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:37,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:37,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:37,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686748228] [2022-11-18 18:28:37,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:37,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:37,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:37,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 134 [2022-11-18 18:28:37,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 134 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2022-11-18 18:28:37,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:37,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 134 [2022-11-18 18:28:37,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:38,199 INFO L130 PetriNetUnfolder]: 890/4155 cut-off events. [2022-11-18 18:28:38,199 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2022-11-18 18:28:38,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5710 conditions, 4155 events. 890/4155 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 41267 event pairs, 271 based on Foata normal form. 757/3980 useless extension candidates. Maximal degree in co-relation 3582. Up to 713 conditions per place. [2022-11-18 18:28:38,241 INFO L137 encePairwiseOnDemand]: 117/134 looper letters, 29 selfloop transitions, 9 changer transitions 0/138 dead transitions. [2022-11-18 18:28:38,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 138 transitions, 385 flow [2022-11-18 18:28:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-11-18 18:28:38,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9104477611940298 [2022-11-18 18:28:38,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-11-18 18:28:38,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-11-18 18:28:38,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:38,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-11-18 18:28:38,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2022-11-18 18:28:38,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-11-18 18:28:38,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-11-18 18:28:38,261 INFO L175 Difference]: Start difference. First operand has 134 places, 134 transitions, 289 flow. Second operand 3 states and 366 transitions. [2022-11-18 18:28:38,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 138 transitions, 385 flow [2022-11-18 18:28:38,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 138 transitions, 377 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-18 18:28:38,270 INFO L231 Difference]: Finished difference. Result has 129 places, 130 transitions, 335 flow [2022-11-18 18:28:38,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=129, PETRI_TRANSITIONS=130} [2022-11-18 18:28:38,274 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, -5 predicate places. [2022-11-18 18:28:38,274 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 130 transitions, 335 flow [2022-11-18 18:28:38,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2022-11-18 18:28:38,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:38,275 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] [2022-11-18 18:28:38,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:28:38,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-18 18:28:38,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash -870645049, now seen corresponding path program 1 times [2022-11-18 18:28:38,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:38,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689349488] [2022-11-18 18:28:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:38,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:38,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689349488] [2022-11-18 18:28:38,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689349488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:38,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:38,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:38,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344545671] [2022-11-18 18:28:38,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:38,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:38,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:38,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:38,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:38,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 134 [2022-11-18 18:28:38,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 130 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-11-18 18:28:38,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:38,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 134 [2022-11-18 18:28:38,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:40,464 INFO L130 PetriNetUnfolder]: 3503/11956 cut-off events. [2022-11-18 18:28:40,464 INFO L131 PetriNetUnfolder]: For 798/801 co-relation queries the response was YES. [2022-11-18 18:28:40,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19311 conditions, 11956 events. 3503/11956 cut-off events. For 798/801 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 139413 event pairs, 1176 based on Foata normal form. 0/9813 useless extension candidates. Maximal degree in co-relation 18970. Up to 3503 conditions per place. [2022-11-18 18:28:40,682 INFO L137 encePairwiseOnDemand]: 113/134 looper letters, 38 selfloop transitions, 15 changer transitions 0/153 dead transitions. [2022-11-18 18:28:40,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 153 transitions, 497 flow [2022-11-18 18:28:40,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2022-11-18 18:28:40,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8631840796019901 [2022-11-18 18:28:40,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2022-11-18 18:28:40,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2022-11-18 18:28:40,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:40,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2022-11-18 18:28:40,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2022-11-18 18:28:40,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-11-18 18:28:40,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-11-18 18:28:40,689 INFO L175 Difference]: Start difference. First operand has 129 places, 130 transitions, 335 flow. Second operand 3 states and 347 transitions. [2022-11-18 18:28:40,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 153 transitions, 497 flow [2022-11-18 18:28:40,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 153 transitions, 479 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:40,705 INFO L231 Difference]: Finished difference. Result has 131 places, 145 transitions, 449 flow [2022-11-18 18:28:40,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=131, PETRI_TRANSITIONS=145} [2022-11-18 18:28:40,707 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, -3 predicate places. [2022-11-18 18:28:40,707 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 145 transitions, 449 flow [2022-11-18 18:28:40,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-11-18 18:28:40,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:40,708 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] [2022-11-18 18:28:40,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:28:40,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-18 18:28:40,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1188366804, now seen corresponding path program 1 times [2022-11-18 18:28:40,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:40,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201814206] [2022-11-18 18:28:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:40,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:40,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:40,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201814206] [2022-11-18 18:28:40,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201814206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:40,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:40,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:40,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480710302] [2022-11-18 18:28:40,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:40,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:40,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:40,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:40,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:40,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 134 [2022-11-18 18:28:40,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 145 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-11-18 18:28:40,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:40,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 134 [2022-11-18 18:28:40,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:43,142 INFO L130 PetriNetUnfolder]: 4532/15371 cut-off events. [2022-11-18 18:28:43,142 INFO L131 PetriNetUnfolder]: For 6010/6675 co-relation queries the response was YES. [2022-11-18 18:28:43,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30653 conditions, 15371 events. 4532/15371 cut-off events. For 6010/6675 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 186735 event pairs, 1841 based on Foata normal form. 57/13147 useless extension candidates. Maximal degree in co-relation 30292. Up to 6214 conditions per place. [2022-11-18 18:28:43,346 INFO L137 encePairwiseOnDemand]: 124/134 looper letters, 63 selfloop transitions, 16 changer transitions 0/177 dead transitions. [2022-11-18 18:28:43,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 177 transitions, 749 flow [2022-11-18 18:28:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:43,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2022-11-18 18:28:43,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383084577114428 [2022-11-18 18:28:43,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2022-11-18 18:28:43,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2022-11-18 18:28:43,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:43,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2022-11-18 18:28:43,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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) [2022-11-18 18:28:43,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-11-18 18:28:43,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-11-18 18:28:43,354 INFO L175 Difference]: Start difference. First operand has 131 places, 145 transitions, 449 flow. Second operand 3 states and 337 transitions. [2022-11-18 18:28:43,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 177 transitions, 749 flow [2022-11-18 18:28:43,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 177 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:43,375 INFO L231 Difference]: Finished difference. Result has 133 places, 159 transitions, 565 flow [2022-11-18 18:28:43,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=565, PETRI_PLACES=133, PETRI_TRANSITIONS=159} [2022-11-18 18:28:43,378 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, -1 predicate places. [2022-11-18 18:28:43,378 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 159 transitions, 565 flow [2022-11-18 18:28:43,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-11-18 18:28:43,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:43,379 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] [2022-11-18 18:28:43,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:28:43,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-18 18:28:43,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1628221845, now seen corresponding path program 1 times [2022-11-18 18:28:43,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:43,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983657481] [2022-11-18 18:28:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:43,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:43,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:43,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:43,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983657481] [2022-11-18 18:28:43,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983657481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:43,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:43,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:43,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313183903] [2022-11-18 18:28:43,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:43,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:43,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:43,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:43,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:43,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2022-11-18 18:28:43,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 159 transitions, 565 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2022-11-18 18:28:43,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:43,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2022-11-18 18:28:43,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:44,482 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([462] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][143], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 149#true, 19#L689-5true, 155#true, Black: 137#true, 125#L689true, 81#L688-7true]) [2022-11-18 18:28:44,482 INFO L383 tUnfolder$Statistics]: this new event has 65 ancestors and is cut-off event [2022-11-18 18:28:44,483 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-11-18 18:28:44,483 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:44,483 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:44,491 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][153], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 128#L688-7true, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 19#L689-5true, 149#true, 118#L689true, 155#true, Black: 137#true]) [2022-11-18 18:28:44,491 INFO L383 tUnfolder$Statistics]: this new event has 65 ancestors and is cut-off event [2022-11-18 18:28:44,491 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-11-18 18:28:44,491 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:44,492 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-11-18 18:28:44,561 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([462] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][73], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 149#true, 129#L690true, 155#true, Black: 137#true, 125#L689true, 81#L688-7true]) [2022-11-18 18:28:44,561 INFO L383 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2022-11-18 18:28:44,562 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-11-18 18:28:44,562 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-11-18 18:28:44,562 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-11-18 18:28:44,642 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][103], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 128#L688-7true, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 149#true, 129#L690true, 118#L689true, 155#true, Black: 137#true]) [2022-11-18 18:28:44,642 INFO L383 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2022-11-18 18:28:44,642 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-11-18 18:28:44,642 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-11-18 18:28:44,642 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-11-18 18:28:44,647 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([462] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][143], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, 33#L689-1true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 19#L689-5true, 149#true, 155#true, Black: 137#true, 125#L689true]) [2022-11-18 18:28:44,647 INFO L383 tUnfolder$Statistics]: this new event has 67 ancestors and is cut-off event [2022-11-18 18:28:44,647 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-18 18:28:44,647 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-18 18:28:44,648 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-11-18 18:28:44,669 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][153], [57#L689-1true, 42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 19#L689-5true, 149#true, 118#L689true, 155#true, Black: 137#true]) [2022-11-18 18:28:44,669 INFO L383 tUnfolder$Statistics]: this new event has 67 ancestors and is cut-off event [2022-11-18 18:28:44,669 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-18 18:28:44,670 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-18 18:28:44,670 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-11-18 18:28:44,711 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([462] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][73], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, 33#L689-1true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 149#true, 129#L690true, 155#true, 125#L689true, Black: 137#true]) [2022-11-18 18:28:44,711 INFO L383 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2022-11-18 18:28:44,711 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-18 18:28:44,711 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-11-18 18:28:44,711 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-11-18 18:28:44,799 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][103], [57#L689-1true, 42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 149#true, 129#L690true, 118#L689true, 155#true, Black: 137#true]) [2022-11-18 18:28:44,799 INFO L383 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2022-11-18 18:28:44,799 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-18 18:28:44,799 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-11-18 18:28:44,799 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-11-18 18:28:45,734 INFO L130 PetriNetUnfolder]: 3962/14490 cut-off events. [2022-11-18 18:28:45,735 INFO L131 PetriNetUnfolder]: For 4062/5065 co-relation queries the response was YES. [2022-11-18 18:28:45,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27354 conditions, 14490 events. 3962/14490 cut-off events. For 4062/5065 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 177950 event pairs, 1378 based on Foata normal form. 54/11813 useless extension candidates. Maximal degree in co-relation 27230. Up to 3263 conditions per place. [2022-11-18 18:28:45,953 INFO L137 encePairwiseOnDemand]: 126/134 looper letters, 42 selfloop transitions, 12 changer transitions 0/181 dead transitions. [2022-11-18 18:28:45,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 181 transitions, 755 flow [2022-11-18 18:28:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2022-11-18 18:28:45,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8681592039800995 [2022-11-18 18:28:45,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2022-11-18 18:28:45,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2022-11-18 18:28:45,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:45,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2022-11-18 18:28:45,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2022-11-18 18:28:45,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-11-18 18:28:45,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-11-18 18:28:45,961 INFO L175 Difference]: Start difference. First operand has 133 places, 159 transitions, 565 flow. Second operand 3 states and 349 transitions. [2022-11-18 18:28:45,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 181 transitions, 755 flow [2022-11-18 18:28:45,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 181 transitions, 723 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:45,981 INFO L231 Difference]: Finished difference. Result has 135 places, 169 transitions, 639 flow [2022-11-18 18:28:45,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=639, PETRI_PLACES=135, PETRI_TRANSITIONS=169} [2022-11-18 18:28:45,984 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 1 predicate places. [2022-11-18 18:28:45,984 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 169 transitions, 639 flow [2022-11-18 18:28:45,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2022-11-18 18:28:45,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:45,985 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:45,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:28:45,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-18 18:28:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:45,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1842888451, now seen corresponding path program 1 times [2022-11-18 18:28:45,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:45,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508574603] [2022-11-18 18:28:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:45,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:28:46,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:46,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508574603] [2022-11-18 18:28:46,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508574603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:46,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:46,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:46,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629508897] [2022-11-18 18:28:46,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:46,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:46,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:46,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:46,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 134 [2022-11-18 18:28:46,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 169 transitions, 639 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2022-11-18 18:28:46,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:46,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 134 [2022-11-18 18:28:46,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:47,655 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][104], [42#L696-5true, thr1Thread1of3ForFork0InUse, 161#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 118#L689true, 155#true, Black: 137#true, Black: 143#true, 128#L688-7true, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 129#L690true, Black: 157#(= |thr1Thread1of3ForFork0_#t~nondet5| |#race~l~0|)]) [2022-11-18 18:28:47,655 INFO L383 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2022-11-18 18:28:47,655 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-11-18 18:28:47,655 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-11-18 18:28:47,656 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-11-18 18:28:47,771 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([462] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][73], [42#L696-5true, thr1Thread1of3ForFork0InUse, 33#L689-1true, 161#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 155#true, Black: 137#true, 125#L689true, Black: 143#true, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 129#L690true, Black: 157#(= |thr1Thread1of3ForFork0_#t~nondet5| |#race~l~0|)]) [2022-11-18 18:28:47,771 INFO L383 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2022-11-18 18:28:47,772 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-11-18 18:28:47,772 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-11-18 18:28:47,772 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-18 18:28:48,065 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][104], [42#L696-5true, thr1Thread1of3ForFork0InUse, 161#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 118#L689true, 155#true, Black: 137#true, 57#L689-1true, Black: 143#true, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 129#L690true, Black: 157#(= |thr1Thread1of3ForFork0_#t~nondet5| |#race~l~0|)]) [2022-11-18 18:28:48,065 INFO L383 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2022-11-18 18:28:48,065 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-11-18 18:28:48,065 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-18 18:28:48,066 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-11-18 18:28:48,305 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][104], [42#L696-5true, thr1Thread1of3ForFork0InUse, 114#L689-3true, 161#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 118#L689true, 155#true, Black: 137#true, Black: 143#true, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 129#L690true, Black: 157#(= |thr1Thread1of3ForFork0_#t~nondet5| |#race~l~0|)]) [2022-11-18 18:28:48,305 INFO L383 tUnfolder$Statistics]: this new event has 70 ancestors and is cut-off event [2022-11-18 18:28:48,305 INFO L386 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-11-18 18:28:48,306 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-11-18 18:28:48,306 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-11-18 18:28:49,239 INFO L130 PetriNetUnfolder]: 6011/20030 cut-off events. [2022-11-18 18:28:49,239 INFO L131 PetriNetUnfolder]: For 10559/12278 co-relation queries the response was YES. [2022-11-18 18:28:49,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43394 conditions, 20030 events. 6011/20030 cut-off events. For 10559/12278 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 250700 event pairs, 1916 based on Foata normal form. 127/16939 useless extension candidates. Maximal degree in co-relation 41567. Up to 7923 conditions per place. [2022-11-18 18:28:49,452 INFO L137 encePairwiseOnDemand]: 124/134 looper letters, 74 selfloop transitions, 23 changer transitions 0/206 dead transitions. [2022-11-18 18:28:49,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 206 transitions, 1002 flow [2022-11-18 18:28:49,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2022-11-18 18:28:49,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.835820895522388 [2022-11-18 18:28:49,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2022-11-18 18:28:49,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2022-11-18 18:28:49,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:49,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2022-11-18 18:28:49,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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) [2022-11-18 18:28:49,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-11-18 18:28:49,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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) [2022-11-18 18:28:49,459 INFO L175 Difference]: Start difference. First operand has 135 places, 169 transitions, 639 flow. Second operand 3 states and 336 transitions. [2022-11-18 18:28:49,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 206 transitions, 1002 flow [2022-11-18 18:28:49,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 206 transitions, 978 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:49,500 INFO L231 Difference]: Finished difference. Result has 137 places, 188 transitions, 845 flow [2022-11-18 18:28:49,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=845, PETRI_PLACES=137, PETRI_TRANSITIONS=188} [2022-11-18 18:28:49,501 INFO L288 CegarLoopForPetriNet]: 134 programPoint places, 3 predicate places. [2022-11-18 18:28:49,501 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 188 transitions, 845 flow [2022-11-18 18:28:49,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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) [2022-11-18 18:28:49,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:49,502 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:49,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:28:49,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-18 18:28:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1793019771, now seen corresponding path program 1 times [2022-11-18 18:28:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:49,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27516912] [2022-11-18 18:28:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:49,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:28:49,522 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:28:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:28:49,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:28:49,538 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:28:49,538 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-18 18:28:49,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2022-11-18 18:28:49,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2022-11-18 18:28:49,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2022-11-18 18:28:49,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2022-11-18 18:28:49,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2022-11-18 18:28:49,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2022-11-18 18:28:49,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2022-11-18 18:28:49,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2022-11-18 18:28:49,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2022-11-18 18:28:49,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2022-11-18 18:28:49,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2022-11-18 18:28:49,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2022-11-18 18:28:49,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2022-11-18 18:28:49,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2022-11-18 18:28:49,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2022-11-18 18:28:49,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2022-11-18 18:28:49,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2022-11-18 18:28:49,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2022-11-18 18:28:49,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2022-11-18 18:28:49,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2022-11-18 18:28:49,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:28:49,543 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 18:28:49,544 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:28:49,544 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 18:28:49,575 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:28:49,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 169 transitions, 370 flow [2022-11-18 18:28:49,615 INFO L130 PetriNetUnfolder]: 13/219 cut-off events. [2022-11-18 18:28:49,616 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-18 18:28:49,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 219 events. 13/219 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 673 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 179. Up to 10 conditions per place. [2022-11-18 18:28:49,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 169 transitions, 370 flow [2022-11-18 18:28:49,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 169 transitions, 370 flow [2022-11-18 18:28:49,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:28:49,622 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;@3b842df5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:28:49,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-18 18:28:49,626 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-11-18 18:28:49,626 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:28:49,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:49,626 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] [2022-11-18 18:28:49,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:28:49,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:49,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2024124458, now seen corresponding path program 1 times [2022-11-18 18:28:49,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:49,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897621169] [2022-11-18 18:28:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:49,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:49,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:49,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:49,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897621169] [2022-11-18 18:28:49,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897621169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:49,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:49,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:49,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256895227] [2022-11-18 18:28:49,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:49,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:49,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:49,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:49,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:49,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 169 [2022-11-18 18:28:49,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 169 transitions, 370 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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) [2022-11-18 18:28:49,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:49,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 169 [2022-11-18 18:28:49,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:54,129 INFO L130 PetriNetUnfolder]: 10552/36460 cut-off events. [2022-11-18 18:28:54,129 INFO L131 PetriNetUnfolder]: For 5029/5029 co-relation queries the response was YES. [2022-11-18 18:28:54,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52975 conditions, 36460 events. 10552/36460 cut-off events. For 5029/5029 co-relation queries the response was YES. Maximal size of possible extension queue 1431. Compared 486652 event pairs, 4260 based on Foata normal form. 6641/34518 useless extension candidates. Maximal degree in co-relation 44195. Up to 7193 conditions per place. [2022-11-18 18:28:54,507 INFO L137 encePairwiseOnDemand]: 147/169 looper letters, 39 selfloop transitions, 12 changer transitions 0/177 dead transitions. [2022-11-18 18:28:54,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 177 transitions, 509 flow [2022-11-18 18:28:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:28:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:28:54,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2022-11-18 18:28:54,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9072978303747534 [2022-11-18 18:28:54,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2022-11-18 18:28:54,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2022-11-18 18:28:54,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:54,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2022-11-18 18:28:54,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2022-11-18 18:28:54,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-11-18 18:28:54,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-11-18 18:28:54,517 INFO L175 Difference]: Start difference. First operand has 169 places, 169 transitions, 370 flow. Second operand 3 states and 460 transitions. [2022-11-18 18:28:54,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 177 transitions, 509 flow [2022-11-18 18:28:54,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 177 transitions, 491 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-18 18:28:54,525 INFO L231 Difference]: Finished difference. Result has 163 places, 166 transitions, 432 flow [2022-11-18 18:28:54,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=163, PETRI_TRANSITIONS=166} [2022-11-18 18:28:54,527 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -6 predicate places. [2022-11-18 18:28:54,527 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 166 transitions, 432 flow [2022-11-18 18:28:54,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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) [2022-11-18 18:28:54,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:54,528 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] [2022-11-18 18:28:54,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:28:54,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:28:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:54,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1372513744, now seen corresponding path program 1 times [2022-11-18 18:28:54,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:54,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142221467] [2022-11-18 18:28:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:54,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:54,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:54,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142221467] [2022-11-18 18:28:54,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142221467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:54,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:54,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:28:54,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138158960] [2022-11-18 18:28:54,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:54,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:28:54,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:28:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:28:54,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 169 [2022-11-18 18:28:54,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 166 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2022-11-18 18:28:54,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:54,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 169 [2022-11-18 18:28:54,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:05,610 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([597] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][146], [Black: 172#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 145#L689-4true, 78#L689true, 63#L696-5true, thr1Thread3of4ForFork0InUse, 180#(= |#race~s~0| 0), thr1Thread4of4ForFork0InUse, 174#(= |#race~l~0| 0), 81#L688-2true, 89#L689-4true]) [2022-11-18 18:29:05,610 INFO L383 tUnfolder$Statistics]: this new event has 76 ancestors and is not cut-off event [2022-11-18 18:29:05,610 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-11-18 18:29:05,610 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is not cut-off event [2022-11-18 18:29:05,610 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is not cut-off event [2022-11-18 18:29:06,938 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([597] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][146], [Black: 172#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 78#L689true, 180#(= |#race~s~0| 0), 63#L696-5true, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 82#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, 174#(= |#race~l~0| 0), 81#L688-2true, 89#L689-4true]) [2022-11-18 18:29:06,938 INFO L383 tUnfolder$Statistics]: this new event has 77 ancestors and is not cut-off event [2022-11-18 18:29:06,939 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2022-11-18 18:29:06,939 INFO L386 tUnfolder$Statistics]: existing Event has 80 ancestors and is not cut-off event [2022-11-18 18:29:06,939 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2022-11-18 18:29:06,990 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([597] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][146], [Black: 172#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 78#L689true, 63#L696-5true, thr1Thread3of4ForFork0InUse, 107#L689-5true, 180#(= |#race~s~0| 0), thr1Thread4of4ForFork0InUse, 174#(= |#race~l~0| 0), 81#L688-2true, 89#L689-4true]) [2022-11-18 18:29:06,991 INFO L383 tUnfolder$Statistics]: this new event has 77 ancestors and is not cut-off event [2022-11-18 18:29:06,991 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2022-11-18 18:29:06,991 INFO L386 tUnfolder$Statistics]: existing Event has 80 ancestors and is not cut-off event [2022-11-18 18:29:06,991 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2022-11-18 18:29:07,027 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([597] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][146], [Black: 172#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 145#L689-4true, 78#L689true, 35#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, 63#L696-5true, 180#(= |#race~s~0| 0), thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 174#(= |#race~l~0| 0), 81#L688-2true]) [2022-11-18 18:29:07,027 INFO L383 tUnfolder$Statistics]: this new event has 77 ancestors and is not cut-off event [2022-11-18 18:29:07,027 INFO L386 tUnfolder$Statistics]: existing Event has 80 ancestors and is not cut-off event [2022-11-18 18:29:07,027 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2022-11-18 18:29:07,028 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2022-11-18 18:29:07,030 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([597] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][146], [Black: 172#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 145#L689-4true, 78#L689true, 180#(= |#race~s~0| 0), 63#L696-5true, thr1Thread3of4ForFork0InUse, 62#L689-5true, thr1Thread4of4ForFork0InUse, 174#(= |#race~l~0| 0), 81#L688-2true]) [2022-11-18 18:29:07,030 INFO L383 tUnfolder$Statistics]: this new event has 77 ancestors and is not cut-off event [2022-11-18 18:29:07,030 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2022-11-18 18:29:07,030 INFO L386 tUnfolder$Statistics]: existing Event has 80 ancestors and is not cut-off event [2022-11-18 18:29:07,031 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is not cut-off event [2022-11-18 18:29:08,313 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([563] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][98], [Black: 172#true, 113#thr1ENTRYtrue, 101#L689true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 63#L696-5true, thr1Thread3of4ForFork0InUse, 180#(= |#race~s~0| 0), thr1Thread4of4ForFork0InUse, 36#L690-3true, 174#(= |#race~l~0| 0), 89#L689-4true]) [2022-11-18 18:29:08,313 INFO L383 tUnfolder$Statistics]: this new event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,313 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,313 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,313 INFO L386 tUnfolder$Statistics]: existing Event has 81 ancestors and is not cut-off event [2022-11-18 18:29:08,332 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([563] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][98], [Black: 172#true, 113#thr1ENTRYtrue, 101#L689true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 145#L689-4true, 63#L696-5true, thr1Thread3of4ForFork0InUse, 180#(= |#race~s~0| 0), thr1Thread4of4ForFork0InUse, 105#L690-3true, 174#(= |#race~l~0| 0)]) [2022-11-18 18:29:08,332 INFO L383 tUnfolder$Statistics]: this new event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,332 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,332 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,332 INFO L386 tUnfolder$Statistics]: existing Event has 81 ancestors and is not cut-off event [2022-11-18 18:29:08,390 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([597] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][146], [Black: 172#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 78#L689true, 180#(= |#race~s~0| 0), 63#L696-5true, thr1Thread3of4ForFork0InUse, 35#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread4of4ForFork0InUse, 82#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, 174#(= |#race~l~0| 0), 81#L688-2true]) [2022-11-18 18:29:08,391 INFO L383 tUnfolder$Statistics]: this new event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,391 INFO L386 tUnfolder$Statistics]: existing Event has 81 ancestors and is not cut-off event [2022-11-18 18:29:08,391 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,391 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,392 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([597] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][146], [Black: 172#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 78#L689true, 63#L696-5true, thr1Thread3of4ForFork0InUse, 180#(= |#race~s~0| 0), thr1Thread4of4ForFork0InUse, 62#L689-5true, 82#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, 174#(= |#race~l~0| 0), 81#L688-2true]) [2022-11-18 18:29:08,392 INFO L383 tUnfolder$Statistics]: this new event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,392 INFO L386 tUnfolder$Statistics]: existing Event has 81 ancestors and is not cut-off event [2022-11-18 18:29:08,393 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,393 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,432 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([597] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][146], [Black: 172#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 78#L689true, 35#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, 63#L696-5true, thr1Thread3of4ForFork0InUse, 107#L689-5true, 180#(= |#race~s~0| 0), thr1Thread4of4ForFork0InUse, 174#(= |#race~l~0| 0), 81#L688-2true]) [2022-11-18 18:29:08,432 INFO L383 tUnfolder$Statistics]: this new event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,433 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,433 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,433 INFO L386 tUnfolder$Statistics]: existing Event has 81 ancestors and is not cut-off event [2022-11-18 18:29:08,434 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([597] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][146], [Black: 172#true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 78#L689true, 63#L696-5true, thr1Thread3of4ForFork0InUse, 107#L689-5true, 180#(= |#race~s~0| 0), 62#L689-5true, thr1Thread4of4ForFork0InUse, 174#(= |#race~l~0| 0), 81#L688-2true]) [2022-11-18 18:29:08,434 INFO L383 tUnfolder$Statistics]: this new event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,434 INFO L386 tUnfolder$Statistics]: existing Event has 81 ancestors and is not cut-off event [2022-11-18 18:29:08,434 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:08,434 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is not cut-off event [2022-11-18 18:29:09,082 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([563] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][98], [Black: 172#true, 113#thr1ENTRYtrue, 101#L689true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 180#(= |#race~s~0| 0), 63#L696-5true, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 82#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, 105#L690-3true, 174#(= |#race~l~0| 0)]) [2022-11-18 18:29:09,083 INFO L383 tUnfolder$Statistics]: this new event has 79 ancestors and is not cut-off event [2022-11-18 18:29:09,083 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is not cut-off event [2022-11-18 18:29:09,083 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is not cut-off event [2022-11-18 18:29:09,083 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is not cut-off event [2022-11-18 18:29:09,089 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([563] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][98], [Black: 172#true, 113#thr1ENTRYtrue, 101#L689true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 180#(= |#race~s~0| 0), 63#L696-5true, thr1Thread3of4ForFork0InUse, 35#thr1Err3ASSERT_VIOLATIONDATA_RACEtrue, thr1Thread4of4ForFork0InUse, 36#L690-3true, 174#(= |#race~l~0| 0)]) [2022-11-18 18:29:09,089 INFO L383 tUnfolder$Statistics]: this new event has 79 ancestors and is not cut-off event [2022-11-18 18:29:09,089 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is not cut-off event [2022-11-18 18:29:09,090 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is not cut-off event [2022-11-18 18:29:09,090 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is not cut-off event [2022-11-18 18:29:09,091 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([563] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][98], [Black: 172#true, 113#thr1ENTRYtrue, 101#L689true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 180#(= |#race~s~0| 0), 63#L696-5true, thr1Thread3of4ForFork0InUse, thr1Thread4of4ForFork0InUse, 62#L689-5true, 36#L690-3true, 174#(= |#race~l~0| 0)]) [2022-11-18 18:29:09,091 INFO L383 tUnfolder$Statistics]: this new event has 79 ancestors and is not cut-off event [2022-11-18 18:29:09,091 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is not cut-off event [2022-11-18 18:29:09,091 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is not cut-off event [2022-11-18 18:29:09,092 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is not cut-off event [2022-11-18 18:29:09,117 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([563] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][98], [Black: 172#true, 113#thr1ENTRYtrue, 101#L689true, thr1Thread1of4ForFork0InUse, thr1Thread2of4ForFork0InUse, 63#L696-5true, thr1Thread3of4ForFork0InUse, 180#(= |#race~s~0| 0), 107#L689-5true, thr1Thread4of4ForFork0InUse, 105#L690-3true, 174#(= |#race~l~0| 0)]) [2022-11-18 18:29:09,118 INFO L383 tUnfolder$Statistics]: this new event has 79 ancestors and is not cut-off event [2022-11-18 18:29:09,118 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is not cut-off event [2022-11-18 18:29:09,118 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is not cut-off event [2022-11-18 18:29:09,118 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is not cut-off event [2022-11-18 18:29:19,347 INFO L130 PetriNetUnfolder]: 82293/214654 cut-off events. [2022-11-18 18:29:19,348 INFO L131 PetriNetUnfolder]: For 13308/13434 co-relation queries the response was YES. [2022-11-18 18:29:20,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359265 conditions, 214654 events. 82293/214654 cut-off events. For 13308/13434 co-relation queries the response was YES. Maximal size of possible extension queue 8748. Compared 3266344 event pairs, 29422 based on Foata normal form. 0/173858 useless extension candidates. Maximal degree in co-relation 358635. Up to 72872 conditions per place. [2022-11-18 18:29:22,018 INFO L137 encePairwiseOnDemand]: 141/169 looper letters, 51 selfloop transitions, 20 changer transitions 0/197 dead transitions. [2022-11-18 18:29:22,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 197 transitions, 651 flow [2022-11-18 18:29:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:29:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:29:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2022-11-18 18:29:22,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8599605522682445 [2022-11-18 18:29:22,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2022-11-18 18:29:22,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2022-11-18 18:29:22,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:22,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2022-11-18 18:29:22,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2022-11-18 18:29:22,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-11-18 18:29:22,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-11-18 18:29:22,027 INFO L175 Difference]: Start difference. First operand has 163 places, 166 transitions, 432 flow. Second operand 3 states and 436 transitions. [2022-11-18 18:29:22,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 197 transitions, 651 flow [2022-11-18 18:29:22,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 197 transitions, 627 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:29:22,499 INFO L231 Difference]: Finished difference. Result has 165 places, 186 transitions, 584 flow [2022-11-18 18:29:22,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=584, PETRI_PLACES=165, PETRI_TRANSITIONS=186} [2022-11-18 18:29:22,500 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, -4 predicate places. [2022-11-18 18:29:22,500 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 186 transitions, 584 flow [2022-11-18 18:29:22,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2022-11-18 18:29:22,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:22,501 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] [2022-11-18 18:29:22,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:29:22,501 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-18 18:29:22,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:22,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1429500565, now seen corresponding path program 1 times [2022-11-18 18:29:22,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:22,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951426084] [2022-11-18 18:29:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:22,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:22,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:22,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951426084] [2022-11-18 18:29:22,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951426084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:22,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:22,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:29:22,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130692767] [2022-11-18 18:29:22,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:22,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:29:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:22,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:29:22,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:29:22,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 169 [2022-11-18 18:29:22,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 186 transitions, 584 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 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) [2022-11-18 18:29:22,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:22,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 169 [2022-11-18 18:29:22,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand