./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb0da49952f084f4179c44b957c91689c392bf769782a6b0853667237fdff1db --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:25:39,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:25:39,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:25:39,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:25:39,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:25:39,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:25:39,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:25:39,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:25:39,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:25:39,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:25:39,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:25:39,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:25:39,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:25:39,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:25:39,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:25:39,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:25:39,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:25:39,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:25:39,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:25:39,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:25:39,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:25:39,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:25:39,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:25:39,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:25:39,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:25:39,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:25:39,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:25:39,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:25:39,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:25:39,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:25:39,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:25:39,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:25:39,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:25:39,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:25:39,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:25:39,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:25:39,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:25:39,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:25:39,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:25:39,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:25:39,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:25:39,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-10-17 10:25:39,677 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:25:39,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:25:39,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:25:39,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:25:39,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:25:39,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:25:39,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:25:39,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:25:39,683 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:25:39,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:25:39,685 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:25:39,685 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:25:39,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:25:39,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:25:39,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:25:39,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:25:39,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:25:39,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:25:39,686 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-10-17 10:25:39,686 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:25:39,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:25:39,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:25:39,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:25:39,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:25:39,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:25:39,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:25:39,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:25:39,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:25:39,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:25:39,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:25:39,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:25:39,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:25:39,698 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:25:39,699 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:25:39,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:25:39,699 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_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb0da49952f084f4179c44b957c91689c392bf769782a6b0853667237fdff1db [2022-10-17 10:25:39,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:25:39,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:25:39,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:25:39,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:25:39,966 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:25:39,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i [2022-10-17 10:25:40,033 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/data/2e566f8d7/26be6e8f010342e9bbab96538472951c/FLAG509fb6dfa [2022-10-17 10:25:40,628 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:25:40,628 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i [2022-10-17 10:25:40,641 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/data/2e566f8d7/26be6e8f010342e9bbab96538472951c/FLAG509fb6dfa [2022-10-17 10:25:40,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/data/2e566f8d7/26be6e8f010342e9bbab96538472951c [2022-10-17 10:25:40,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:25:40,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:25:40,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:25:40,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:25:40,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:25:40,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:25:40" (1/1) ... [2022-10-17 10:25:40,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2cfdd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:40, skipping insertion in model container [2022-10-17 10:25:40,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:25:40" (1/1) ... [2022-10-17 10:25:40,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:25:41,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:25:41,297 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_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i[29939,29952] [2022-10-17 10:25:41,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:25:41,312 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:25:41,347 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_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/sv-benchmarks/c/pthread-ext/46_monabsex2_vs-b.i[29939,29952] [2022-10-17 10:25:41,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:25:41,393 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:25:41,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41 WrapperNode [2022-10-17 10:25:41,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:25:41,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:25:41,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:25:41,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:25:41,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (1/1) ... [2022-10-17 10:25:41,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (1/1) ... [2022-10-17 10:25:41,436 INFO L138 Inliner]: procedures = 166, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-10-17 10:25:41,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:25:41,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:25:41,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:25:41,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:25:41,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (1/1) ... [2022-10-17 10:25:41,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (1/1) ... [2022-10-17 10:25:41,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (1/1) ... [2022-10-17 10:25:41,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (1/1) ... [2022-10-17 10:25:41,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (1/1) ... [2022-10-17 10:25:41,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (1/1) ... [2022-10-17 10:25:41,458 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (1/1) ... [2022-10-17 10:25:41,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (1/1) ... [2022-10-17 10:25:41,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:25:41,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:25:41,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:25:41,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:25:41,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (1/1) ... [2022-10-17 10:25:41,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:25:41,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:25:41,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:25:41,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae55e54-71e5-406f-8fc4-0dd0d0baf3ae/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:25:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-10-17 10:25:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-10-17 10:25:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:25:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:25:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:25:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:25:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:25:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:25:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:25:41,566 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:25:41,698 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:25:41,701 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:25:41,844 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:25:41,866 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:25:41,866 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:25:41,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:25:41 BoogieIcfgContainer [2022-10-17 10:25:41,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:25:41,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:25:41,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:25:41,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:25:41,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:25:40" (1/3) ... [2022-10-17 10:25:41,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d2ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:25:41, skipping insertion in model container [2022-10-17 10:25:41,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:41" (2/3) ... [2022-10-17 10:25:41,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d2ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:25:41, skipping insertion in model container [2022-10-17 10:25:41,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:25:41" (3/3) ... [2022-10-17 10:25:41,892 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs-b.i [2022-10-17 10:25:41,900 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:25:41,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:25:41,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-10-17 10:25:41,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:25:41,960 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:25:41,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 64 transitions, 133 flow [2022-10-17 10:25:42,041 INFO L130 PetriNetUnfolder]: 4/75 cut-off events. [2022-10-17 10:25:42,041 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:25:42,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 4/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 105 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2022-10-17 10:25:42,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 64 transitions, 133 flow [2022-10-17 10:25:42,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 64 transitions, 133 flow [2022-10-17 10:25:42,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:25:42,075 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;@e5a8449, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:25:42,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-10-17 10:25:42,099 INFO L130 PetriNetUnfolder]: 2/35 cut-off events. [2022-10-17 10:25:42,099 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:25:42,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:42,100 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] [2022-10-17 10:25:42,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-10-17 10:25:42,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:42,119 INFO L85 PathProgramCache]: Analyzing trace with hash 341928378, now seen corresponding path program 1 times [2022-10-17 10:25:42,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:42,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392267427] [2022-10-17 10:25:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:42,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:42,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392267427] [2022-10-17 10:25:42,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392267427] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:42,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:42,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:25:42,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440519213] [2022-10-17 10:25:42,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:42,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:42,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:42,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:42,496 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 64 [2022-10-17 10:25:42,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:42,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:42,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 64 [2022-10-17 10:25:42,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:42,579 INFO L130 PetriNetUnfolder]: 1/58 cut-off events. [2022-10-17 10:25:42,579 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-10-17 10:25:42,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 58 events. 1/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 8/60 useless extension candidates. Maximal degree in co-relation 42. Up to 5 conditions per place. [2022-10-17 10:25:42,582 INFO L137 encePairwiseOnDemand]: 58/64 looper letters, 4 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-10-17 10:25:42,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 125 flow [2022-10-17 10:25:42,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:25:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2022-10-17 10:25:42,596 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.890625 [2022-10-17 10:25:42,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 171 transitions. [2022-10-17 10:25:42,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 171 transitions. [2022-10-17 10:25:42,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:42,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 171 transitions. [2022-10-17 10:25:42,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:42,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:42,610 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:42,612 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 133 flow. Second operand 3 states and 171 transitions. [2022-10-17 10:25:42,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 125 flow [2022-10-17 10:25:42,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 125 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:25:42,619 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 117 flow [2022-10-17 10:25:42,621 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2022-10-17 10:25:42,625 INFO L287 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2022-10-17 10:25:42,625 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 117 flow [2022-10-17 10:25:42,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:42,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:42,626 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] [2022-10-17 10:25:42,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:25:42,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-10-17 10:25:42,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash -763135107, now seen corresponding path program 1 times [2022-10-17 10:25:42,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:42,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116256390] [2022-10-17 10:25:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:42,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:42,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:25:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:42,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:25:42,722 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:25:42,725 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-10-17 10:25:42,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-10-17 10:25:42,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-10-17 10:25:42,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-10-17 10:25:42,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-10-17 10:25:42,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-10-17 10:25:42,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-10-17 10:25:42,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-10-17 10:25:42,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-10-17 10:25:42,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-10-17 10:25:42,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-10-17 10:25:42,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:25:42,739 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:25:42,744 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:25:42,745 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-17 10:25:42,804 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:25:42,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 210 flow [2022-10-17 10:25:42,841 INFO L130 PetriNetUnfolder]: 7/123 cut-off events. [2022-10-17 10:25:42,841 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:25:42,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 123 events. 7/123 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 275 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2022-10-17 10:25:42,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 99 transitions, 210 flow [2022-10-17 10:25:42,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 99 transitions, 210 flow [2022-10-17 10:25:42,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:25:42,850 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;@e5a8449, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:25:42,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-10-17 10:25:42,858 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2022-10-17 10:25:42,858 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:25:42,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:42,858 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] [2022-10-17 10:25:42,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-10-17 10:25:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:42,859 INFO L85 PathProgramCache]: Analyzing trace with hash 980846205, now seen corresponding path program 1 times [2022-10-17 10:25:42,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:42,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285395584] [2022-10-17 10:25:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:42,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:42,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:42,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285395584] [2022-10-17 10:25:42,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285395584] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:42,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:42,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:25:42,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44634409] [2022-10-17 10:25:42,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:42,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:42,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:42,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:42,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:42,965 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 99 [2022-10-17 10:25:42,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:42,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:42,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 99 [2022-10-17 10:25:42,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:43,168 INFO L130 PetriNetUnfolder]: 54/441 cut-off events. [2022-10-17 10:25:43,169 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-10-17 10:25:43,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 441 events. 54/441 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2367 event pairs, 13 based on Foata normal form. 78/431 useless extension candidates. Maximal degree in co-relation 326. Up to 61 conditions per place. [2022-10-17 10:25:43,179 INFO L137 encePairwiseOnDemand]: 87/99 looper letters, 19 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2022-10-17 10:25:43,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 99 transitions, 265 flow [2022-10-17 10:25:43,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:25:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-10-17 10:25:43,188 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9158249158249159 [2022-10-17 10:25:43,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-10-17 10:25:43,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-10-17 10:25:43,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:43,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-10-17 10:25:43,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,199 INFO L175 Difference]: Start difference. First operand has 99 places, 99 transitions, 210 flow. Second operand 3 states and 272 transitions. [2022-10-17 10:25:43,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 99 transitions, 265 flow [2022-10-17 10:25:43,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 99 transitions, 263 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-10-17 10:25:43,205 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 238 flow [2022-10-17 10:25:43,206 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2022-10-17 10:25:43,207 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, -4 predicate places. [2022-10-17 10:25:43,208 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 238 flow [2022-10-17 10:25:43,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:43,210 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] [2022-10-17 10:25:43,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:25:43,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-10-17 10:25:43,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2000162403, now seen corresponding path program 1 times [2022-10-17 10:25:43,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:43,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237447463] [2022-10-17 10:25:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:43,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:43,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:43,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237447463] [2022-10-17 10:25:43,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237447463] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:43,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:43,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:25:43,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062746790] [2022-10-17 10:25:43,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:43,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:43,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:43,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:43,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:43,333 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2022-10-17 10:25:43,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:43,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2022-10-17 10:25:43,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:43,545 INFO L130 PetriNetUnfolder]: 112/671 cut-off events. [2022-10-17 10:25:43,545 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-10-17 10:25:43,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 671 events. 112/671 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4436 event pairs, 32 based on Foata normal form. 0/566 useless extension candidates. Maximal degree in co-relation 845. Up to 148 conditions per place. [2022-10-17 10:25:43,555 INFO L137 encePairwiseOnDemand]: 85/99 looper letters, 25 selfloop transitions, 10 changer transitions 0/109 dead transitions. [2022-10-17 10:25:43,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 109 transitions, 343 flow [2022-10-17 10:25:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:25:43,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2022-10-17 10:25:43,557 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8686868686868687 [2022-10-17 10:25:43,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2022-10-17 10:25:43,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2022-10-17 10:25:43,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:43,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2022-10-17 10:25:43,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,562 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 238 flow. Second operand 3 states and 258 transitions. [2022-10-17 10:25:43,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 109 transitions, 343 flow [2022-10-17 10:25:43,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 109 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:25:43,572 INFO L231 Difference]: Finished difference. Result has 97 places, 104 transitions, 314 flow [2022-10-17 10:25:43,572 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=97, PETRI_TRANSITIONS=104} [2022-10-17 10:25:43,575 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, -2 predicate places. [2022-10-17 10:25:43,575 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 104 transitions, 314 flow [2022-10-17 10:25:43,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:43,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:43,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:25:43,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-10-17 10:25:43,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:43,577 INFO L85 PathProgramCache]: Analyzing trace with hash 253180552, now seen corresponding path program 1 times [2022-10-17 10:25:43,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:43,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477689544] [2022-10-17 10:25:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:43,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:43,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:43,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477689544] [2022-10-17 10:25:43,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477689544] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:43,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:43,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:25:43,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321952995] [2022-10-17 10:25:43,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:43,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:43,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:43,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:43,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:43,627 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 99 [2022-10-17 10:25:43,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 104 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:43,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 99 [2022-10-17 10:25:43,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:43,789 INFO L130 PetriNetUnfolder]: 139/794 cut-off events. [2022-10-17 10:25:43,790 INFO L131 PetriNetUnfolder]: For 251/274 co-relation queries the response was YES. [2022-10-17 10:25:43,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1445 conditions, 794 events. 139/794 cut-off events. For 251/274 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5573 event pairs, 49 based on Foata normal form. 3/692 useless extension candidates. Maximal degree in co-relation 1284. Up to 254 conditions per place. [2022-10-17 10:25:43,803 INFO L137 encePairwiseOnDemand]: 92/99 looper letters, 39 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2022-10-17 10:25:43,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 120 transitions, 479 flow [2022-10-17 10:25:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:25:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2022-10-17 10:25:43,805 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.835016835016835 [2022-10-17 10:25:43,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2022-10-17 10:25:43,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2022-10-17 10:25:43,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:43,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2022-10-17 10:25:43,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,808 INFO L175 Difference]: Start difference. First operand has 97 places, 104 transitions, 314 flow. Second operand 3 states and 248 transitions. [2022-10-17 10:25:43,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 120 transitions, 479 flow [2022-10-17 10:25:43,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 120 transitions, 449 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:25:43,814 INFO L231 Difference]: Finished difference. Result has 99 places, 111 transitions, 370 flow [2022-10-17 10:25:43,815 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=99, PETRI_TRANSITIONS=111} [2022-10-17 10:25:43,816 INFO L287 CegarLoopForPetriNet]: 99 programPoint places, 0 predicate places. [2022-10-17 10:25:43,816 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 111 transitions, 370 flow [2022-10-17 10:25:43,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:43,816 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] [2022-10-17 10:25:43,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:25:43,817 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2022-10-17 10:25:43,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:43,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1844260839, now seen corresponding path program 1 times [2022-10-17 10:25:43,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:43,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588799950] [2022-10-17 10:25:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:43,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:43,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:25:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:43,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:25:43,853 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:25:43,854 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2022-10-17 10:25:43,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2022-10-17 10:25:43,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2022-10-17 10:25:43,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2022-10-17 10:25:43,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2022-10-17 10:25:43,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2022-10-17 10:25:43,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2022-10-17 10:25:43,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2022-10-17 10:25:43,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2022-10-17 10:25:43,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2022-10-17 10:25:43,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2022-10-17 10:25:43,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2022-10-17 10:25:43,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2022-10-17 10:25:43,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2022-10-17 10:25:43,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2022-10-17 10:25:43,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2022-10-17 10:25:43,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:25:43,857 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-17 10:25:43,858 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:25:43,858 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-17 10:25:43,882 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:25:43,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 134 transitions, 289 flow [2022-10-17 10:25:43,910 INFO L130 PetriNetUnfolder]: 10/171 cut-off events. [2022-10-17 10:25:43,910 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-10-17 10:25:43,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 171 events. 10/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 483 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 127. Up to 8 conditions per place. [2022-10-17 10:25:43,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 134 transitions, 289 flow [2022-10-17 10:25:43,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 134 transitions, 289 flow [2022-10-17 10:25:43,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:25:43,918 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;@e5a8449, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:25:43,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-10-17 10:25:43,921 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-10-17 10:25:43,922 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:25:43,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:43,922 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] [2022-10-17 10:25:43,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-10-17 10:25:43,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1321755807, now seen corresponding path program 1 times [2022-10-17 10:25:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:43,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538492122] [2022-10-17 10:25:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:43,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:43,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538492122] [2022-10-17 10:25:43,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538492122] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:43,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:43,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:25:43,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591750066] [2022-10-17 10:25:43,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:43,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:43,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:43,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:43,957 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 134 [2022-10-17 10:25:43,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 134 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:43,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:43,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 134 [2022-10-17 10:25:43,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:44,683 INFO L130 PetriNetUnfolder]: 890/4155 cut-off events. [2022-10-17 10:25:44,683 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2022-10-17 10:25:44,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5710 conditions, 4155 events. 890/4155 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 41230 event pairs, 271 based on Foata normal form. 757/3980 useless extension candidates. Maximal degree in co-relation 3582. Up to 713 conditions per place. [2022-10-17 10:25:44,746 INFO L137 encePairwiseOnDemand]: 117/134 looper letters, 29 selfloop transitions, 9 changer transitions 0/138 dead transitions. [2022-10-17 10:25:44,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 138 transitions, 385 flow [2022-10-17 10:25:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:25:44,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2022-10-17 10:25:44,748 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9104477611940298 [2022-10-17 10:25:44,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2022-10-17 10:25:44,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2022-10-17 10:25:44,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:44,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2022-10-17 10:25:44,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:44,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:44,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:44,752 INFO L175 Difference]: Start difference. First operand has 134 places, 134 transitions, 289 flow. Second operand 3 states and 366 transitions. [2022-10-17 10:25:44,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 138 transitions, 385 flow [2022-10-17 10:25:44,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 138 transitions, 377 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-10-17 10:25:44,757 INFO L231 Difference]: Finished difference. Result has 129 places, 130 transitions, 335 flow [2022-10-17 10:25:44,757 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=129, PETRI_TRANSITIONS=130} [2022-10-17 10:25:44,760 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, -5 predicate places. [2022-10-17 10:25:44,760 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 130 transitions, 335 flow [2022-10-17 10:25:44,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:44,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:44,761 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] [2022-10-17 10:25:44,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:25:44,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-10-17 10:25:44,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:44,762 INFO L85 PathProgramCache]: Analyzing trace with hash -870645049, now seen corresponding path program 1 times [2022-10-17 10:25:44,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:44,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246592320] [2022-10-17 10:25:44,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:44,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:44,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:44,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246592320] [2022-10-17 10:25:44,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246592320] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:44,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:44,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:25:44,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792814823] [2022-10-17 10:25:44,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:44,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:44,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:44,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:44,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:44,866 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 134 [2022-10-17 10:25:44,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 130 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:44,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:44,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 134 [2022-10-17 10:25:44,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:46,837 INFO L130 PetriNetUnfolder]: 3503/11956 cut-off events. [2022-10-17 10:25:46,837 INFO L131 PetriNetUnfolder]: For 798/801 co-relation queries the response was YES. [2022-10-17 10:25:46,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19311 conditions, 11956 events. 3503/11956 cut-off events. For 798/801 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 139238 event pairs, 1176 based on Foata normal form. 0/9813 useless extension candidates. Maximal degree in co-relation 18970. Up to 3503 conditions per place. [2022-10-17 10:25:46,985 INFO L137 encePairwiseOnDemand]: 113/134 looper letters, 38 selfloop transitions, 15 changer transitions 0/153 dead transitions. [2022-10-17 10:25:46,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 153 transitions, 497 flow [2022-10-17 10:25:46,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:46,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:25:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2022-10-17 10:25:46,987 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8631840796019901 [2022-10-17 10:25:46,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2022-10-17 10:25:46,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2022-10-17 10:25:46,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:46,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2022-10-17 10:25:46,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:46,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:46,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:46,992 INFO L175 Difference]: Start difference. First operand has 129 places, 130 transitions, 335 flow. Second operand 3 states and 347 transitions. [2022-10-17 10:25:46,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 153 transitions, 497 flow [2022-10-17 10:25:47,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 153 transitions, 479 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:25:47,006 INFO L231 Difference]: Finished difference. Result has 131 places, 145 transitions, 449 flow [2022-10-17 10:25:47,006 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=131, PETRI_TRANSITIONS=145} [2022-10-17 10:25:47,007 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, -3 predicate places. [2022-10-17 10:25:47,007 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 145 transitions, 449 flow [2022-10-17 10:25:47,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:47,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:47,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:47,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:25:47,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-10-17 10:25:47,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:47,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1188366804, now seen corresponding path program 1 times [2022-10-17 10:25:47,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:47,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396424370] [2022-10-17 10:25:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:47,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:47,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:47,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396424370] [2022-10-17 10:25:47,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396424370] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:47,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:47,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:25:47,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229123745] [2022-10-17 10:25:47,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:47,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:47,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:47,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:47,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:47,046 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 134 [2022-10-17 10:25:47,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 145 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:47,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:47,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 134 [2022-10-17 10:25:47,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:49,532 INFO L130 PetriNetUnfolder]: 4532/15371 cut-off events. [2022-10-17 10:25:49,532 INFO L131 PetriNetUnfolder]: For 6010/6675 co-relation queries the response was YES. [2022-10-17 10:25:49,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30653 conditions, 15371 events. 4532/15371 cut-off events. For 6010/6675 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 186280 event pairs, 1841 based on Foata normal form. 57/13147 useless extension candidates. Maximal degree in co-relation 30292. Up to 6214 conditions per place. [2022-10-17 10:25:49,737 INFO L137 encePairwiseOnDemand]: 124/134 looper letters, 63 selfloop transitions, 16 changer transitions 0/177 dead transitions. [2022-10-17 10:25:49,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 177 transitions, 749 flow [2022-10-17 10:25:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:25:49,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2022-10-17 10:25:49,739 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8383084577114428 [2022-10-17 10:25:49,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2022-10-17 10:25:49,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2022-10-17 10:25:49,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:49,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2022-10-17 10:25:49,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:49,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:49,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:49,744 INFO L175 Difference]: Start difference. First operand has 131 places, 145 transitions, 449 flow. Second operand 3 states and 337 transitions. [2022-10-17 10:25:49,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 177 transitions, 749 flow [2022-10-17 10:25:49,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 177 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:25:49,763 INFO L231 Difference]: Finished difference. Result has 133 places, 159 transitions, 565 flow [2022-10-17 10:25:49,764 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=565, PETRI_PLACES=133, PETRI_TRANSITIONS=159} [2022-10-17 10:25:49,765 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, -1 predicate places. [2022-10-17 10:25:49,765 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 159 transitions, 565 flow [2022-10-17 10:25:49,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:49,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:49,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:49,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:25:49,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-10-17 10:25:49,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:49,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1628221845, now seen corresponding path program 1 times [2022-10-17 10:25:49,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:49,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128953276] [2022-10-17 10:25:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:49,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:49,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:49,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128953276] [2022-10-17 10:25:49,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128953276] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:49,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:49,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:25:49,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041182373] [2022-10-17 10:25:49,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:49,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:49,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:49,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:49,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:49,828 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2022-10-17 10:25:49,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 159 transitions, 565 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:49,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:49,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2022-10-17 10:25:49,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:50,771 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([462] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][143], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 149#true, 19#L689-5true, 155#true, Black: 137#true, 125#L689true, 81#L688-7true]) [2022-10-17 10:25:50,771 INFO L383 tUnfolder$Statistics]: this new event has 65 ancestors and is cut-off event [2022-10-17 10:25:50,771 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-10-17 10:25:50,771 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-10-17 10:25:50,772 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-10-17 10:25:50,780 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][153], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 128#L688-7true, 19#L689-5true, 149#true, 118#L689true, 155#true, Black: 137#true]) [2022-10-17 10:25:50,781 INFO L383 tUnfolder$Statistics]: this new event has 65 ancestors and is cut-off event [2022-10-17 10:25:50,781 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-10-17 10:25:50,781 INFO L386 tUnfolder$Statistics]: existing Event has 62 ancestors and is cut-off event [2022-10-17 10:25:50,781 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-10-17 10:25:50,854 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([462] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][73], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 149#true, 129#L690true, 155#true, Black: 137#true, 125#L689true, 81#L688-7true]) [2022-10-17 10:25:50,854 INFO L383 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2022-10-17 10:25:50,855 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-10-17 10:25:50,855 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-10-17 10:25:50,855 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-10-17 10:25:50,935 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][103], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 128#L688-7true, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 149#true, 129#L690true, 118#L689true, 155#true, Black: 137#true]) [2022-10-17 10:25:50,936 INFO L383 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2022-10-17 10:25:50,936 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-10-17 10:25:50,936 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-10-17 10:25:50,936 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-10-17 10:25:50,941 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([462] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][143], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, 33#L689-1true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 19#L689-5true, 149#true, 155#true, Black: 137#true, 125#L689true]) [2022-10-17 10:25:50,941 INFO L383 tUnfolder$Statistics]: this new event has 67 ancestors and is cut-off event [2022-10-17 10:25:50,941 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-10-17 10:25:50,941 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-10-17 10:25:50,941 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-10-17 10:25:50,963 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][153], [57#L689-1true, 42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 19#L689-5true, 149#true, 118#L689true, 155#true, Black: 137#true]) [2022-10-17 10:25:50,964 INFO L383 tUnfolder$Statistics]: this new event has 67 ancestors and is cut-off event [2022-10-17 10:25:50,964 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-10-17 10:25:50,964 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-10-17 10:25:50,964 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-10-17 10:25:51,007 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([462] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][73], [42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, 33#L689-1true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 149#true, 129#L690true, 155#true, 125#L689true, Black: 137#true]) [2022-10-17 10:25:51,008 INFO L383 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2022-10-17 10:25:51,008 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-10-17 10:25:51,008 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-10-17 10:25:51,008 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-10-17 10:25:51,098 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][103], [57#L689-1true, 42#L696-5true, thr1Thread1of3ForFork0InUse, Black: 143#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 149#true, 129#L690true, 118#L689true, 155#true, Black: 137#true]) [2022-10-17 10:25:51,099 INFO L383 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2022-10-17 10:25:51,099 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-10-17 10:25:51,099 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-10-17 10:25:51,099 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-10-17 10:25:51,885 INFO L130 PetriNetUnfolder]: 3962/14490 cut-off events. [2022-10-17 10:25:51,885 INFO L131 PetriNetUnfolder]: For 4062/5065 co-relation queries the response was YES. [2022-10-17 10:25:51,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27354 conditions, 14490 events. 3962/14490 cut-off events. For 4062/5065 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 177895 event pairs, 1378 based on Foata normal form. 54/11813 useless extension candidates. Maximal degree in co-relation 27230. Up to 3263 conditions per place. [2022-10-17 10:25:52,086 INFO L137 encePairwiseOnDemand]: 126/134 looper letters, 42 selfloop transitions, 12 changer transitions 0/181 dead transitions. [2022-10-17 10:25:52,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 181 transitions, 755 flow [2022-10-17 10:25:52,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:25:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2022-10-17 10:25:52,089 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8681592039800995 [2022-10-17 10:25:52,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2022-10-17 10:25:52,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2022-10-17 10:25:52,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:52,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2022-10-17 10:25:52,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:52,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:52,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:52,093 INFO L175 Difference]: Start difference. First operand has 133 places, 159 transitions, 565 flow. Second operand 3 states and 349 transitions. [2022-10-17 10:25:52,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 181 transitions, 755 flow [2022-10-17 10:25:52,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 181 transitions, 723 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:25:52,113 INFO L231 Difference]: Finished difference. Result has 135 places, 169 transitions, 639 flow [2022-10-17 10:25:52,114 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=639, PETRI_PLACES=135, PETRI_TRANSITIONS=169} [2022-10-17 10:25:52,117 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 1 predicate places. [2022-10-17 10:25:52,117 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 169 transitions, 639 flow [2022-10-17 10:25:52,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:52,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:52,118 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:52,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:25:52,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-10-17 10:25:52,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:52,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1842888451, now seen corresponding path program 1 times [2022-10-17 10:25:52,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:52,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661931720] [2022-10-17 10:25:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:52,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 10:25:52,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:52,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661931720] [2022-10-17 10:25:52,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661931720] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:52,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:52,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:25:52,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802395366] [2022-10-17 10:25:52,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:52,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:52,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:52,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:52,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:52,183 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 134 [2022-10-17 10:25:52,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 169 transitions, 639 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:52,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:52,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 134 [2022-10-17 10:25:52,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:25:53,887 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][104], [42#L696-5true, thr1Thread1of3ForFork0InUse, 161#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 118#L689true, 155#true, Black: 137#true, Black: 143#true, 128#L688-7true, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 129#L690true, Black: 157#(= |thr1Thread1of3ForFork0_#t~nondet5| |#race~l~0|)]) [2022-10-17 10:25:53,887 INFO L383 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2022-10-17 10:25:53,887 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-10-17 10:25:53,887 INFO L386 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-10-17 10:25:53,887 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-10-17 10:25:54,040 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([462] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][73], [42#L696-5true, thr1Thread1of3ForFork0InUse, 33#L689-1true, 161#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 155#true, Black: 137#true, 125#L689true, Black: 143#true, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 129#L690true, Black: 157#(= |thr1Thread1of3ForFork0_#t~nondet5| |#race~l~0|)]) [2022-10-17 10:25:54,041 INFO L383 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2022-10-17 10:25:54,041 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-10-17 10:25:54,041 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-10-17 10:25:54,041 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-10-17 10:25:54,174 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][104], [42#L696-5true, thr1Thread1of3ForFork0InUse, 161#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 118#L689true, 155#true, Black: 137#true, 57#L689-1true, Black: 143#true, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 129#L690true, Black: 157#(= |thr1Thread1of3ForFork0_#t~nondet5| |#race~l~0|)]) [2022-10-17 10:25:54,174 INFO L383 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2022-10-17 10:25:54,174 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-10-17 10:25:54,175 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-10-17 10:25:54,175 INFO L386 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-10-17 10:25:54,386 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([394] L688-14-->L689: Formula: (= |v_#race~s~0_4| 0) InVars {} OutVars{#race~s~0=|v_#race~s~0_4|} AuxVars[] AssignedVars[#race~s~0][104], [42#L696-5true, thr1Thread1of3ForFork0InUse, 114#L689-3true, 161#true, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 118#L689true, 155#true, Black: 137#true, Black: 143#true, Black: 151#(= |thr1Thread1of3ForFork0_#t~nondet4| |#race~s~0|), 129#L690true, Black: 157#(= |thr1Thread1of3ForFork0_#t~nondet5| |#race~l~0|)]) [2022-10-17 10:25:54,386 INFO L383 tUnfolder$Statistics]: this new event has 70 ancestors and is cut-off event [2022-10-17 10:25:54,387 INFO L386 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-10-17 10:25:54,387 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-10-17 10:25:54,387 INFO L386 tUnfolder$Statistics]: existing Event has 67 ancestors and is cut-off event [2022-10-17 10:25:55,076 INFO L130 PetriNetUnfolder]: 6011/20030 cut-off events. [2022-10-17 10:25:55,076 INFO L131 PetriNetUnfolder]: For 10559/12278 co-relation queries the response was YES. [2022-10-17 10:25:55,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43394 conditions, 20030 events. 6011/20030 cut-off events. For 10559/12278 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 250754 event pairs, 1916 based on Foata normal form. 127/16939 useless extension candidates. Maximal degree in co-relation 41567. Up to 7923 conditions per place. [2022-10-17 10:25:55,345 INFO L137 encePairwiseOnDemand]: 124/134 looper letters, 74 selfloop transitions, 23 changer transitions 0/206 dead transitions. [2022-10-17 10:25:55,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 206 transitions, 1002 flow [2022-10-17 10:25:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:25:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2022-10-17 10:25:55,347 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.835820895522388 [2022-10-17 10:25:55,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2022-10-17 10:25:55,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2022-10-17 10:25:55,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:55,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2022-10-17 10:25:55,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:55,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:55,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:55,351 INFO L175 Difference]: Start difference. First operand has 135 places, 169 transitions, 639 flow. Second operand 3 states and 336 transitions. [2022-10-17 10:25:55,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 206 transitions, 1002 flow [2022-10-17 10:25:55,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 206 transitions, 978 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:25:55,394 INFO L231 Difference]: Finished difference. Result has 137 places, 188 transitions, 845 flow [2022-10-17 10:25:55,394 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=845, PETRI_PLACES=137, PETRI_TRANSITIONS=188} [2022-10-17 10:25:55,395 INFO L287 CegarLoopForPetriNet]: 134 programPoint places, 3 predicate places. [2022-10-17 10:25:55,395 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 188 transitions, 845 flow [2022-10-17 10:25:55,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:55,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:55,396 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] [2022-10-17 10:25:55,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:25:55,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-10-17 10:25:55,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:55,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1793019771, now seen corresponding path program 1 times [2022-10-17 10:25:55,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:55,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820906970] [2022-10-17 10:25:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:55,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:55,411 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:25:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:55,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:25:55,646 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:25:55,647 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-10-17 10:25:55,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2022-10-17 10:25:55,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2022-10-17 10:25:55,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2022-10-17 10:25:55,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2022-10-17 10:25:55,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2022-10-17 10:25:55,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2022-10-17 10:25:55,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2022-10-17 10:25:55,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2022-10-17 10:25:55,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2022-10-17 10:25:55,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2022-10-17 10:25:55,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2022-10-17 10:25:55,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2022-10-17 10:25:55,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2022-10-17 10:25:55,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2022-10-17 10:25:55,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2022-10-17 10:25:55,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2022-10-17 10:25:55,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2022-10-17 10:25:55,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2022-10-17 10:25:55,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2022-10-17 10:25:55,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2022-10-17 10:25:55,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:25:55,650 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-10-17 10:25:55,651 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:25:55,651 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-10-17 10:25:55,682 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:25:55,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 169 transitions, 370 flow [2022-10-17 10:25:55,718 INFO L130 PetriNetUnfolder]: 13/219 cut-off events. [2022-10-17 10:25:55,718 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-10-17 10:25:55,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 219 events. 13/219 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 678 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 179. Up to 10 conditions per place. [2022-10-17 10:25:55,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 169 transitions, 370 flow [2022-10-17 10:25:55,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 169 transitions, 370 flow [2022-10-17 10:25:55,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:25:55,726 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;@e5a8449, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:25:55,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-10-17 10:25:55,728 INFO L130 PetriNetUnfolder]: 2/34 cut-off events. [2022-10-17 10:25:55,728 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:25:55,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:25:55,729 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] [2022-10-17 10:25:55,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-10-17 10:25:55,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:55,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2024124458, now seen corresponding path program 1 times [2022-10-17 10:25:55,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:55,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213045061] [2022-10-17 10:25:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:55,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:55,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:55,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213045061] [2022-10-17 10:25:55,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213045061] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:55,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:55,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:25:55,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969059581] [2022-10-17 10:25:55,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:55,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:25:55,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:55,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:55,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:55,754 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 169 [2022-10-17 10:25:55,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 169 transitions, 370 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:55,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:25:55,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 169 [2022-10-17 10:25:55,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:26:00,133 INFO L130 PetriNetUnfolder]: 10552/36460 cut-off events. [2022-10-17 10:26:00,133 INFO L131 PetriNetUnfolder]: For 5029/5029 co-relation queries the response was YES. [2022-10-17 10:26:00,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52975 conditions, 36460 events. 10552/36460 cut-off events. For 5029/5029 co-relation queries the response was YES. Maximal size of possible extension queue 1431. Compared 486870 event pairs, 4260 based on Foata normal form. 6641/34518 useless extension candidates. Maximal degree in co-relation 44195. Up to 7193 conditions per place. [2022-10-17 10:26:00,748 INFO L137 encePairwiseOnDemand]: 147/169 looper letters, 39 selfloop transitions, 12 changer transitions 0/177 dead transitions. [2022-10-17 10:26:00,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 177 transitions, 509 flow [2022-10-17 10:26:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:26:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:26:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2022-10-17 10:26:00,751 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9072978303747534 [2022-10-17 10:26:00,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2022-10-17 10:26:00,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2022-10-17 10:26:00,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:26:00,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2022-10-17 10:26:00,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:26:00,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:26:00,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:26:00,757 INFO L175 Difference]: Start difference. First operand has 169 places, 169 transitions, 370 flow. Second operand 3 states and 460 transitions. [2022-10-17 10:26:00,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 177 transitions, 509 flow [2022-10-17 10:26:00,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 177 transitions, 491 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-10-17 10:26:00,764 INFO L231 Difference]: Finished difference. Result has 163 places, 166 transitions, 432 flow [2022-10-17 10:26:00,765 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=163, PETRI_TRANSITIONS=166} [2022-10-17 10:26:00,766 INFO L287 CegarLoopForPetriNet]: 169 programPoint places, -6 predicate places. [2022-10-17 10:26:00,767 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 166 transitions, 432 flow [2022-10-17 10:26:00,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:26:00,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:26:00,767 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] [2022-10-17 10:26:00,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 10:26:00,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-10-17 10:26:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1372513744, now seen corresponding path program 1 times [2022-10-17 10:26:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:00,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098919984] [2022-10-17 10:26:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:00,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:26:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:26:00,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:26:00,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098919984] [2022-10-17 10:26:00,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098919984] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:26:00,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:26:00,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:26:00,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202707627] [2022-10-17 10:26:00,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:26:00,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:26:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:26:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:26:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:26:00,809 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 169 [2022-10-17 10:26:00,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 166 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:26:00,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:26:00,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 169 [2022-10-17 10:26:00,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand