./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:59:54,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:59:54,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:59:54,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:59:54,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:59:54,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:59:54,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:59:54,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:59:54,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:59:54,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:59:54,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:59:54,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:59:54,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:59:54,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:59:54,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:59:54,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:59:54,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:59:54,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:59:54,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:59:54,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:59:54,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:59:54,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:59:54,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:59:54,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:59:54,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:59:54,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:59:54,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:59:54,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:59:54,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:59:54,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:59:54,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:59:54,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:59:54,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:59:54,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:59:54,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:59:54,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:59:54,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:59:54,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:59:54,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:59:54,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:59:54,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:59:54,665 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:59:54,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:59:54,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:59:54,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:59:54,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:59:54,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:59:54,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:59:54,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:59:54,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:59:54,707 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:59:54,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:59:54,708 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:59:54,708 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:59:54,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:59:54,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:59:54,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:59:54,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:59:54,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:59:54,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:59:54,710 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:59:54,710 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:59:54,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:59:54,711 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:59:54,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:59:54,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:59:54,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:59:54,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:59:54,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:54,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:59:54,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:59:54,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:59:54,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:59:54,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:59:54,713 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:59:54,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:59:54,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:59:54,714 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_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 [2022-11-02 20:59:55,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:59:55,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:59:55,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:59:55,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:59:55,045 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:59:55,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2022-11-02 20:59:55,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/data/e8c0b6579/824d7be6debd4cdd8b8951fd7e5eaf97/FLAG56d7dd850 [2022-11-02 20:59:55,668 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:59:55,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2022-11-02 20:59:55,681 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/data/e8c0b6579/824d7be6debd4cdd8b8951fd7e5eaf97/FLAG56d7dd850 [2022-11-02 20:59:55,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/data/e8c0b6579/824d7be6debd4cdd8b8951fd7e5eaf97 [2022-11-02 20:59:55,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:59:55,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:59:55,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:55,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:59:55,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:59:55,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:55,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c384f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:55, skipping insertion in model container [2022-11-02 20:59:55,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:55" (1/1) ... [2022-11-02 20:59:56,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:59:56,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:59:56,246 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:59:56,393 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i[30959,30972] [2022-11-02 20:59:56,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:56,417 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:59:56,445 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:59:56,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i[30959,30972] [2022-11-02 20:59:56,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:56,520 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:59:56,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56 WrapperNode [2022-11-02 20:59:56,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:56,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:56,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:59:56,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:59:56,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (1/1) ... [2022-11-02 20:59:56,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (1/1) ... [2022-11-02 20:59:56,564 INFO L138 Inliner]: procedures = 176, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 99 [2022-11-02 20:59:56,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:56,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:59:56,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:59:56,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:59:56,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (1/1) ... [2022-11-02 20:59:56,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (1/1) ... [2022-11-02 20:59:56,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (1/1) ... [2022-11-02 20:59:56,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (1/1) ... [2022-11-02 20:59:56,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (1/1) ... [2022-11-02 20:59:56,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (1/1) ... [2022-11-02 20:59:56,588 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (1/1) ... [2022-11-02 20:59:56,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (1/1) ... [2022-11-02 20:59:56,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:59:56,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:59:56,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:59:56,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:59:56,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (1/1) ... [2022-11-02 20:59:56,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:56,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:56,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:59:56,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f6662c-2825-4b36-bd07-bd95fee530bf/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:59:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:59:56,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:59:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:59:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:59:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:59:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:59:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:59:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:59:56,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:59:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:59:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:59:56,693 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:59:56,843 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:56,846 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:57,139 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:57,211 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:57,212 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:59:57,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:57 BoogieIcfgContainer [2022-11-02 20:59:57,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:57,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:57,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:57,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:57,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:59:55" (1/3) ... [2022-11-02 20:59:57,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecf1065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:57, skipping insertion in model container [2022-11-02 20:59:57,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:56" (2/3) ... [2022-11-02 20:59:57,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecf1065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:57, skipping insertion in model container [2022-11-02 20:59:57,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:57" (3/3) ... [2022-11-02 20:59:57,225 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2022-11-02 20:59:57,234 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:59:57,245 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:57,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-02 20:59:57,245 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:59:57,351 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:59:57,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 82 transitions, 169 flow [2022-11-02 20:59:57,433 INFO L130 PetriNetUnfolder]: 5/93 cut-off events. [2022-11-02 20:59:57,434 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:59:57,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 93 events. 5/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2022-11-02 20:59:57,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 82 transitions, 169 flow [2022-11-02 20:59:57,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 82 transitions, 169 flow [2022-11-02 20:59:57,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:57,461 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;@17f1c772, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:57,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-02 20:59:57,476 INFO L130 PetriNetUnfolder]: 2/44 cut-off events. [2022-11-02 20:59:57,476 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:59:57,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:57,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:57,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-02 20:59:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:57,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1241486865, now seen corresponding path program 1 times [2022-11-02 20:59:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:57,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397258141] [2022-11-02 20:59:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:57,615 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:59:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:57,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:59:57,661 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:59:57,662 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-02 20:59:57,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-02 20:59:57,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-02 20:59:57,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-02 20:59:57,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-02 20:59:57,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-02 20:59:57,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-02 20:59:57,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-02 20:59:57,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-02 20:59:57,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-02 20:59:57,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-02 20:59:57,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-02 20:59:57,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-02 20:59:57,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-02 20:59:57,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-02 20:59:57,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:59:57,670 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:59:57,674 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:59:57,678 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:59:57,733 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:59:57,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 135 transitions, 282 flow [2022-11-02 20:59:57,812 INFO L130 PetriNetUnfolder]: 9/159 cut-off events. [2022-11-02 20:59:57,812 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:59:57,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 159 events. 9/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 285 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2022-11-02 20:59:57,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 135 transitions, 282 flow [2022-11-02 20:59:57,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 135 transitions, 282 flow [2022-11-02 20:59:57,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:57,821 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;@17f1c772, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:57,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-02 20:59:57,831 INFO L130 PetriNetUnfolder]: 2/47 cut-off events. [2022-11-02 20:59:57,831 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:59:57,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:57,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:57,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-02 20:59:57,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:57,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1472297676, now seen corresponding path program 1 times [2022-11-02 20:59:57,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:57,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317036249] [2022-11-02 20:59:57,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:57,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:57,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:57,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317036249] [2022-11-02 20:59:57,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317036249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:57,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:57,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:59:57,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164973158] [2022-11-02 20:59:57,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:57,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:59:57,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:58,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:59:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:59:58,029 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 135 [2022-11-02 20:59:58,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 135 transitions, 282 flow. Second operand has 2 states, 2 states have (on average 110.0) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:58,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 135 [2022-11-02 20:59:58,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:58,183 INFO L130 PetriNetUnfolder]: 37/387 cut-off events. [2022-11-02 20:59:58,183 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-02 20:59:58,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 387 events. 37/387 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1478 event pairs, 20 based on Foata normal form. 39/398 useless extension candidates. Maximal degree in co-relation 284. Up to 51 conditions per place. [2022-11-02 20:59:58,189 INFO L137 encePairwiseOnDemand]: 119/135 looper letters, 10 selfloop transitions, 0 changer transitions 0/114 dead transitions. [2022-11-02 20:59:58,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 114 transitions, 260 flow [2022-11-02 20:59:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:59:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:59:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 244 transitions. [2022-11-02 20:59:58,204 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9037037037037037 [2022-11-02 20:59:58,204 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 244 transitions. [2022-11-02 20:59:58,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 244 transitions. [2022-11-02 20:59:58,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:58,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 244 transitions. [2022-11-02 20:59:58,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,217 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,219 INFO L175 Difference]: Start difference. First operand has 133 places, 135 transitions, 282 flow. Second operand 2 states and 244 transitions. [2022-11-02 20:59:58,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 114 transitions, 260 flow [2022-11-02 20:59:58,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 258 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-02 20:59:58,226 INFO L231 Difference]: Finished difference. Result has 116 places, 114 transitions, 238 flow [2022-11-02 20:59:58,228 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=238, PETRI_PLACES=116, PETRI_TRANSITIONS=114} [2022-11-02 20:59:58,232 INFO L287 CegarLoopForPetriNet]: 133 programPoint places, -17 predicate places. [2022-11-02 20:59:58,232 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 114 transitions, 238 flow [2022-11-02 20:59:58,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 110.0) internal successors, (220), 2 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:58,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:58,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:59:58,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-02 20:59:58,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1013518598, now seen corresponding path program 1 times [2022-11-02 20:59:58,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:58,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427925315] [2022-11-02 20:59:58,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:58,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:58,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:58,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427925315] [2022-11-02 20:59:58,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427925315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:58,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:58,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:58,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851367547] [2022-11-02 20:59:58,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:58,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:58,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:58,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:58,311 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 135 [2022-11-02 20:59:58,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 114 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:58,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 135 [2022-11-02 20:59:58,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:58,458 INFO L130 PetriNetUnfolder]: 78/586 cut-off events. [2022-11-02 20:59:58,459 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-02 20:59:58,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744 conditions, 586 events. 78/586 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2856 event pairs, 20 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 739. Up to 80 conditions per place. [2022-11-02 20:59:58,465 INFO L137 encePairwiseOnDemand]: 125/135 looper letters, 21 selfloop transitions, 8 changer transitions 0/127 dead transitions. [2022-11-02 20:59:58,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 127 transitions, 327 flow [2022-11-02 20:59:58,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:59:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2022-11-02 20:59:58,469 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8395061728395061 [2022-11-02 20:59:58,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2022-11-02 20:59:58,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2022-11-02 20:59:58,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:58,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2022-11-02 20:59:58,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,474 INFO L175 Difference]: Start difference. First operand has 116 places, 114 transitions, 238 flow. Second operand 3 states and 340 transitions. [2022-11-02 20:59:58,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 127 transitions, 327 flow [2022-11-02 20:59:58,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 127 transitions, 327 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:59:58,478 INFO L231 Difference]: Finished difference. Result has 120 places, 122 transitions, 306 flow [2022-11-02 20:59:58,478 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=120, PETRI_TRANSITIONS=122} [2022-11-02 20:59:58,479 INFO L287 CegarLoopForPetriNet]: 133 programPoint places, -13 predicate places. [2022-11-02 20:59:58,480 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 122 transitions, 306 flow [2022-11-02 20:59:58,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:58,481 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:58,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:59:58,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-02 20:59:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:58,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1773725358, now seen corresponding path program 1 times [2022-11-02 20:59:58,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:58,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17840295] [2022-11-02 20:59:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:58,509 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:59:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:59:58,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:59:58,527 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:59:58,528 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-02 20:59:58,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-02 20:59:58,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-02 20:59:58,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-02 20:59:58,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-02 20:59:58,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-02 20:59:58,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-02 20:59:58,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-02 20:59:58,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-02 20:59:58,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-02 20:59:58,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-02 20:59:58,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-02 20:59:58,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-02 20:59:58,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-02 20:59:58,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-02 20:59:58,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-02 20:59:58,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-02 20:59:58,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-02 20:59:58,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-02 20:59:58,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-02 20:59:58,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-02 20:59:58,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-02 20:59:58,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:59:58,534 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:59:58,535 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:59:58,535 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:59:58,579 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:59:58,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 188 transitions, 397 flow [2022-11-02 20:59:58,638 INFO L130 PetriNetUnfolder]: 13/225 cut-off events. [2022-11-02 20:59:58,639 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:59:58,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 225 events. 13/225 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 573 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 169. Up to 8 conditions per place. [2022-11-02 20:59:58,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 188 transitions, 397 flow [2022-11-02 20:59:58,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 188 transitions, 397 flow [2022-11-02 20:59:58,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:58,659 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;@17f1c772, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:58,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-02 20:59:58,664 INFO L130 PetriNetUnfolder]: 2/48 cut-off events. [2022-11-02 20:59:58,664 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:59:58,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:58,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:58,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:59:58,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash -635848088, now seen corresponding path program 1 times [2022-11-02 20:59:58,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:58,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714360656] [2022-11-02 20:59:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:58,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:58,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:58,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714360656] [2022-11-02 20:59:58,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714360656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:58,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:58,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:59:58,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871957146] [2022-11-02 20:59:58,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:58,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:59:58,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:58,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:59:58,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:59:58,700 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 188 [2022-11-02 20:59:58,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 188 transitions, 397 flow. Second operand has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:58,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:58,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 188 [2022-11-02 20:59:58,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:59,198 INFO L130 PetriNetUnfolder]: 324/2133 cut-off events. [2022-11-02 20:59:59,199 INFO L131 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2022-11-02 20:59:59,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 2133 events. 324/2133 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 16612 event pairs, 220 based on Foata normal form. 214/2173 useless extension candidates. Maximal degree in co-relation 646. Up to 376 conditions per place. [2022-11-02 20:59:59,225 INFO L137 encePairwiseOnDemand]: 165/188 looper letters, 15 selfloop transitions, 0 changer transitions 0/160 dead transitions. [2022-11-02 20:59:59,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 160 transitions, 371 flow [2022-11-02 20:59:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:59:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:59:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 338 transitions. [2022-11-02 20:59:59,229 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.898936170212766 [2022-11-02 20:59:59,229 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 338 transitions. [2022-11-02 20:59:59,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 338 transitions. [2022-11-02 20:59:59,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:59,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 338 transitions. [2022-11-02 20:59:59,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 169.0) internal successors, (338), 2 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:59,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:59,236 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:59,236 INFO L175 Difference]: Start difference. First operand has 185 places, 188 transitions, 397 flow. Second operand 2 states and 338 transitions. [2022-11-02 20:59:59,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 160 transitions, 371 flow [2022-11-02 20:59:59,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 160 transitions, 365 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-02 20:59:59,240 INFO L231 Difference]: Finished difference. Result has 162 places, 160 transitions, 335 flow [2022-11-02 20:59:59,241 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=335, PETRI_PLACES=162, PETRI_TRANSITIONS=160} [2022-11-02 20:59:59,242 INFO L287 CegarLoopForPetriNet]: 185 programPoint places, -23 predicate places. [2022-11-02 20:59:59,242 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 160 transitions, 335 flow [2022-11-02 20:59:59,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 151.0) internal successors, (302), 2 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:59,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:59,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:59,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:59:59,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 20:59:59,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:59,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1743907198, now seen corresponding path program 1 times [2022-11-02 20:59:59,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:59,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069400013] [2022-11-02 20:59:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:59,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:59,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:59,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069400013] [2022-11-02 20:59:59,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069400013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:59,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:59,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:59:59,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212727122] [2022-11-02 20:59:59,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:59,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:59,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:59,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:59,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:59:59,294 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 188 [2022-11-02 20:59:59,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 160 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:59,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:59,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 188 [2022-11-02 20:59:59,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:00,382 INFO L130 PetriNetUnfolder]: 1313/5777 cut-off events. [2022-11-02 21:00:00,382 INFO L131 PetriNetUnfolder]: For 229/229 co-relation queries the response was YES. [2022-11-02 21:00:00,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7813 conditions, 5777 events. 1313/5777 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 56164 event pairs, 427 based on Foata normal form. 0/5372 useless extension candidates. Maximal degree in co-relation 7807. Up to 1116 conditions per place. [2022-11-02 21:00:00,463 INFO L137 encePairwiseOnDemand]: 173/188 looper letters, 32 selfloop transitions, 12 changer transitions 0/180 dead transitions. [2022-11-02 21:00:00,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 180 transitions, 473 flow [2022-11-02 21:00:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:00:00,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2022-11-02 21:00:00,465 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-02 21:00:00,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2022-11-02 21:00:00,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2022-11-02 21:00:00,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:00,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2022-11-02 21:00:00,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:00,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:00,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:00,471 INFO L175 Difference]: Start difference. First operand has 162 places, 160 transitions, 335 flow. Second operand 3 states and 470 transitions. [2022-11-02 21:00:00,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 180 transitions, 473 flow [2022-11-02 21:00:00,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 180 transitions, 473 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:00:00,478 INFO L231 Difference]: Finished difference. Result has 166 places, 172 transitions, 437 flow [2022-11-02 21:00:00,478 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=437, PETRI_PLACES=166, PETRI_TRANSITIONS=172} [2022-11-02 21:00:00,482 INFO L287 CegarLoopForPetriNet]: 185 programPoint places, -19 predicate places. [2022-11-02 21:00:00,482 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 172 transitions, 437 flow [2022-11-02 21:00:00,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:00,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:00,484 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:00,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:00:00,484 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-02 21:00:00,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1462267855, now seen corresponding path program 1 times [2022-11-02 21:00:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:00,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28135745] [2022-11-02 21:00:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:00,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:00:00,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:00:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:00:00,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:00:00,613 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:00:00,613 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-02 21:00:00,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2022-11-02 21:00:00,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2022-11-02 21:00:00,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2022-11-02 21:00:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2022-11-02 21:00:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2022-11-02 21:00:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2022-11-02 21:00:00,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2022-11-02 21:00:00,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2022-11-02 21:00:00,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2022-11-02 21:00:00,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2022-11-02 21:00:00,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2022-11-02 21:00:00,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2022-11-02 21:00:00,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2022-11-02 21:00:00,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2022-11-02 21:00:00,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2022-11-02 21:00:00,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2022-11-02 21:00:00,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2022-11-02 21:00:00,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2022-11-02 21:00:00,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2022-11-02 21:00:00,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2022-11-02 21:00:00,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2022-11-02 21:00:00,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2022-11-02 21:00:00,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2022-11-02 21:00:00,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2022-11-02 21:00:00,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2022-11-02 21:00:00,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2022-11-02 21:00:00,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2022-11-02 21:00:00,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2022-11-02 21:00:00,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:00:00,629 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 21:00:00,629 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:00:00,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 21:00:00,698 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:00:00,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 241 transitions, 514 flow [2022-11-02 21:00:00,753 INFO L130 PetriNetUnfolder]: 17/291 cut-off events. [2022-11-02 21:00:00,754 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 21:00:00,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 291 events. 17/291 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 907 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 233. Up to 10 conditions per place. [2022-11-02 21:00:00,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 241 transitions, 514 flow [2022-11-02 21:00:00,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 241 transitions, 514 flow [2022-11-02 21:00:00,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:00,768 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;@17f1c772, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:00,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-02 21:00:00,778 INFO L130 PetriNetUnfolder]: 2/51 cut-off events. [2022-11-02 21:00:00,778 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:00:00,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:00,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:00,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-02 21:00:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:00,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1707839908, now seen corresponding path program 1 times [2022-11-02 21:00:00,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:00,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42616309] [2022-11-02 21:00:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:00,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:00,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:00,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42616309] [2022-11-02 21:00:00,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42616309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:00,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:00,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:00:00,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267522735] [2022-11-02 21:00:00,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:00,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:00:00,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:00,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:00:00,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:00:00,829 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2022-11-02 21:00:00,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 241 transitions, 514 flow. Second operand has 2 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:00,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:00,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2022-11-02 21:00:00,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:03,188 INFO L130 PetriNetUnfolder]: 2299/11583 cut-off events. [2022-11-02 21:00:03,188 INFO L131 PetriNetUnfolder]: For 1548/1548 co-relation queries the response was YES. [2022-11-02 21:00:03,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14919 conditions, 11583 events. 2299/11583 cut-off events. For 1548/1548 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 130135 event pairs, 1720 based on Foata normal form. 1185/11809 useless extension candidates. Maximal degree in co-relation 2667. Up to 2501 conditions per place. [2022-11-02 21:00:03,493 INFO L137 encePairwiseOnDemand]: 211/241 looper letters, 20 selfloop transitions, 0 changer transitions 0/206 dead transitions. [2022-11-02 21:00:03,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 206 transitions, 484 flow [2022-11-02 21:00:03,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:00:03,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 21:00:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 432 transitions. [2022-11-02 21:00:03,496 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8962655601659751 [2022-11-02 21:00:03,496 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 432 transitions. [2022-11-02 21:00:03,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 432 transitions. [2022-11-02 21:00:03,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:03,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 432 transitions. [2022-11-02 21:00:03,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:03,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:03,500 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:03,501 INFO L175 Difference]: Start difference. First operand has 237 places, 241 transitions, 514 flow. Second operand 2 states and 432 transitions. [2022-11-02 21:00:03,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 206 transitions, 484 flow [2022-11-02 21:00:03,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 206 transitions, 472 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-02 21:00:03,506 INFO L231 Difference]: Finished difference. Result has 208 places, 206 transitions, 432 flow [2022-11-02 21:00:03,507 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=432, PETRI_PLACES=208, PETRI_TRANSITIONS=206} [2022-11-02 21:00:03,508 INFO L287 CegarLoopForPetriNet]: 237 programPoint places, -29 predicate places. [2022-11-02 21:00:03,508 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 206 transitions, 432 flow [2022-11-02 21:00:03,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:03,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:03,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:03,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:00:03,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-02 21:00:03,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:03,510 INFO L85 PathProgramCache]: Analyzing trace with hash -75112813, now seen corresponding path program 1 times [2022-11-02 21:00:03,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:03,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315862406] [2022-11-02 21:00:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:03,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:03,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315862406] [2022-11-02 21:00:03,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315862406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:03,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:03,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:03,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896909137] [2022-11-02 21:00:03,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:03,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:03,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:03,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:03,574 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 241 [2022-11-02 21:00:03,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 206 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:03,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:03,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 241 [2022-11-02 21:00:03,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:12,702 INFO L130 PetriNetUnfolder]: 17226/57382 cut-off events. [2022-11-02 21:00:12,703 INFO L131 PetriNetUnfolder]: For 2212/2212 co-relation queries the response was YES. [2022-11-02 21:00:13,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81207 conditions, 57382 events. 17226/57382 cut-off events. For 2212/2212 co-relation queries the response was YES. Maximal size of possible extension queue 1579. Compared 773157 event pairs, 6167 based on Foata normal form. 0/53168 useless extension candidates. Maximal degree in co-relation 81200. Up to 13336 conditions per place. [2022-11-02 21:00:13,860 INFO L137 encePairwiseOnDemand]: 221/241 looper letters, 43 selfloop transitions, 16 changer transitions 0/233 dead transitions. [2022-11-02 21:00:13,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 233 transitions, 619 flow [2022-11-02 21:00:13,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:00:13,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2022-11-02 21:00:13,863 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8298755186721992 [2022-11-02 21:00:13,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2022-11-02 21:00:13,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2022-11-02 21:00:13,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:13,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2022-11-02 21:00:13,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:13,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:13,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:13,870 INFO L175 Difference]: Start difference. First operand has 208 places, 206 transitions, 432 flow. Second operand 3 states and 600 transitions. [2022-11-02 21:00:13,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 233 transitions, 619 flow [2022-11-02 21:00:13,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 233 transitions, 619 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:00:13,881 INFO L231 Difference]: Finished difference. Result has 212 places, 222 transitions, 568 flow [2022-11-02 21:00:13,882 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=568, PETRI_PLACES=212, PETRI_TRANSITIONS=222} [2022-11-02 21:00:13,884 INFO L287 CegarLoopForPetriNet]: 237 programPoint places, -25 predicate places. [2022-11-02 21:00:13,885 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 222 transitions, 568 flow [2022-11-02 21:00:13,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:13,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:13,887 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:13,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:00:13,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-02 21:00:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:13,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1648916715, now seen corresponding path program 1 times [2022-11-02 21:00:13,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:13,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115360505] [2022-11-02 21:00:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:13,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:00:13,930 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:00:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:00:13,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:00:13,978 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:00:13,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-11-02 21:00:13,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-11-02 21:00:13,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-11-02 21:00:13,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-11-02 21:00:13,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-11-02 21:00:13,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-11-02 21:00:13,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-11-02 21:00:13,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-11-02 21:00:13,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-11-02 21:00:13,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-11-02 21:00:13,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-11-02 21:00:13,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-11-02 21:00:13,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-11-02 21:00:13,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-11-02 21:00:13,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-11-02 21:00:13,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-11-02 21:00:13,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-11-02 21:00:13,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-11-02 21:00:13,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2022-11-02 21:00:13,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-11-02 21:00:13,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-11-02 21:00:13,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-11-02 21:00:13,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-11-02 21:00:13,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-11-02 21:00:13,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-11-02 21:00:13,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-11-02 21:00:13,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-11-02 21:00:13,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-11-02 21:00:13,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-11-02 21:00:13,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2022-11-02 21:00:13,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-11-02 21:00:13,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-11-02 21:00:13,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-11-02 21:00:13,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-11-02 21:00:13,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-11-02 21:00:13,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-11-02 21:00:13,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:00:13,987 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 21:00:13,989 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 21:00:13,989 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-02 21:00:14,064 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:00:14,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 294 transitions, 633 flow [2022-11-02 21:00:14,161 INFO L130 PetriNetUnfolder]: 21/357 cut-off events. [2022-11-02 21:00:14,161 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-02 21:00:14,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 357 events. 21/357 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1226 event pairs, 0 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2022-11-02 21:00:14,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 294 transitions, 633 flow [2022-11-02 21:00:14,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 294 transitions, 633 flow [2022-11-02 21:00:14,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:14,180 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;@17f1c772, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:14,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2022-11-02 21:00:14,184 INFO L130 PetriNetUnfolder]: 2/47 cut-off events. [2022-11-02 21:00:14,185 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:00:14,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:14,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:14,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-02 21:00:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:14,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1274516240, now seen corresponding path program 1 times [2022-11-02 21:00:14,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:14,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98677636] [2022-11-02 21:00:14,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:14,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:14,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:14,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98677636] [2022-11-02 21:00:14,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98677636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:14,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:14,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:00:14,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161259136] [2022-11-02 21:00:14,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:14,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:00:14,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:14,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:00:14,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:00:14,233 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 294 [2022-11-02 21:00:14,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 294 transitions, 633 flow. Second operand has 2 states, 2 states have (on average 233.0) internal successors, (466), 2 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:14,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:14,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 294 [2022-11-02 21:00:14,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:27,446 INFO L130 PetriNetUnfolder]: 14762/61829 cut-off events. [2022-11-02 21:00:27,446 INFO L131 PetriNetUnfolder]: For 11651/11651 co-relation queries the response was YES. [2022-11-02 21:00:28,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82383 conditions, 61829 events. 14762/61829 cut-off events. For 11651/11651 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 886183 event pairs, 11720 based on Foata normal form. 6629/63455 useless extension candidates. Maximal degree in co-relation 15078. Up to 15626 conditions per place. [2022-11-02 21:00:28,775 INFO L137 encePairwiseOnDemand]: 257/294 looper letters, 25 selfloop transitions, 0 changer transitions 0/252 dead transitions. [2022-11-02 21:00:28,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 252 transitions, 599 flow [2022-11-02 21:00:28,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:00:28,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 21:00:28,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 526 transitions. [2022-11-02 21:00:28,778 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8945578231292517 [2022-11-02 21:00:28,779 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 526 transitions. [2022-11-02 21:00:28,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 526 transitions. [2022-11-02 21:00:28,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:28,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 526 transitions. [2022-11-02 21:00:28,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:28,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:28,785 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:28,786 INFO L175 Difference]: Start difference. First operand has 289 places, 294 transitions, 633 flow. Second operand 2 states and 526 transitions. [2022-11-02 21:00:28,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 252 transitions, 599 flow [2022-11-02 21:00:28,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 252 transitions, 579 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-02 21:00:28,804 INFO L231 Difference]: Finished difference. Result has 254 places, 252 transitions, 529 flow [2022-11-02 21:00:28,805 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=529, PETRI_PLACES=254, PETRI_TRANSITIONS=252} [2022-11-02 21:00:28,806 INFO L287 CegarLoopForPetriNet]: 289 programPoint places, -35 predicate places. [2022-11-02 21:00:28,807 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 252 transitions, 529 flow [2022-11-02 21:00:28,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 233.0) internal successors, (466), 2 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:28,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:28,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:28,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:00:28,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-02 21:00:28,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:28,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1603647505, now seen corresponding path program 1 times [2022-11-02 21:00:28,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:28,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387438655] [2022-11-02 21:00:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:28,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:28,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:28,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387438655] [2022-11-02 21:00:28,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387438655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:28,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:28,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:28,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124248209] [2022-11-02 21:00:28,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:28,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:28,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:28,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:28,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:28,882 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 294 [2022-11-02 21:00:28,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 252 transitions, 529 flow. Second operand has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:28,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:28,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 294 [2022-11-02 21:00:28,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand