./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bee6bfabfc9168d01d046a770b423c49a0035ad8b39e289385170f3b76ba2fb2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:44:35,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:44:35,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:44:35,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:44:35,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:44:35,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:44:35,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:44:35,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:44:35,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:44:35,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:44:35,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:44:35,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:44:35,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:44:35,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:44:35,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:44:35,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:44:35,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:44:35,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:44:35,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:44:35,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:44:35,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:44:35,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:44:35,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:44:35,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:44:35,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:44:35,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:44:35,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:44:35,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:44:35,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:44:35,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:44:35,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:44:35,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:44:35,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:44:35,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:44:35,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:44:35,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:44:35,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:44:35,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:44:35,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:44:35,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:44:35,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:44:35,313 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:44:35,356 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:44:35,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:44:35,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:44:35,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:44:35,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:44:35,358 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:44:35,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:44:35,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:44:35,359 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:44:35,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:44:35,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:44:35,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:44:35,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:44:35,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:44:35,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:44:35,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:44:35,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:44:35,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:44:35,362 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:44:35,363 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:44:35,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:44:35,363 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:44:35,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:44:35,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:44:35,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:44:35,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:44:35,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:44:35,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:44:35,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:44:35,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:44:35,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:44:35,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:44:35,367 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:44:35,367 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:44:35,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:44:35,368 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_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bee6bfabfc9168d01d046a770b423c49a0035ad8b39e289385170f3b76ba2fb2 [2022-11-02 20:44:35,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:44:35,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:44:35,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:44:35,714 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:44:35,715 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:44:35,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i [2022-11-02 20:44:35,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/data/6dd4c28c9/6fa6e6e70a9d492e9be9a7458f8d5c57/FLAGe70368916 [2022-11-02 20:44:36,449 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:44:36,451 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i [2022-11-02 20:44:36,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/data/6dd4c28c9/6fa6e6e70a9d492e9be9a7458f8d5c57/FLAGe70368916 [2022-11-02 20:44:36,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/data/6dd4c28c9/6fa6e6e70a9d492e9be9a7458f8d5c57 [2022-11-02 20:44:36,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:44:36,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:44:36,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:44:36,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:44:36,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:44:36,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:44:36" (1/1) ... [2022-11-02 20:44:36,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60793569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:36, skipping insertion in model container [2022-11-02 20:44:36,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:44:36" (1/1) ... [2022-11-02 20:44:36,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:44:36,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:44:37,202 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_66d98d77-415d-4b74-96fb-38eafbb78a2d/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i[30315,30328] [2022-11-02 20:44:37,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:37,225 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:44:37,278 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_66d98d77-415d-4b74-96fb-38eafbb78a2d/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-b.i[30315,30328] [2022-11-02 20:44:37,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:37,318 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:44:37,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37 WrapperNode [2022-11-02 20:44:37,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:44:37,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:37,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:44:37,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:44:37,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (1/1) ... [2022-11-02 20:44:37,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (1/1) ... [2022-11-02 20:44:37,368 INFO L138 Inliner]: procedures = 169, calls = 19, calls flagged for inlining = 5, calls inlined = 7, statements flattened = 180 [2022-11-02 20:44:37,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:37,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:44:37,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:44:37,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:44:37,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (1/1) ... [2022-11-02 20:44:37,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (1/1) ... [2022-11-02 20:44:37,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (1/1) ... [2022-11-02 20:44:37,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (1/1) ... [2022-11-02 20:44:37,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (1/1) ... [2022-11-02 20:44:37,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (1/1) ... [2022-11-02 20:44:37,443 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (1/1) ... [2022-11-02 20:44:37,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (1/1) ... [2022-11-02 20:44:37,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:44:37,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:44:37,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:44:37,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:44:37,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (1/1) ... [2022-11-02 20:44:37,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:44:37,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:37,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:44:37,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66d98d77-415d-4b74-96fb-38eafbb78a2d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:44:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:44:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:44:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:44:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:44:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:44:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:44:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:44:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:44:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:44:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:44:37,544 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:44:37,707 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:44:37,709 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:44:38,210 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:44:38,389 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:44:38,390 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:44:38,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:38 BoogieIcfgContainer [2022-11-02 20:44:38,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:44:38,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:44:38,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:44:38,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:44:38,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:44:36" (1/3) ... [2022-11-02 20:44:38,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b61cee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:38, skipping insertion in model container [2022-11-02 20:44:38,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:37" (2/3) ... [2022-11-02 20:44:38,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b61cee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:38, skipping insertion in model container [2022-11-02 20:44:38,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:38" (3/3) ... [2022-11-02 20:44:38,432 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-b.i [2022-11-02 20:44:38,444 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:44:38,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:44:38,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-02 20:44:38,455 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:44:38,558 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:44:38,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 155 transitions, 315 flow [2022-11-02 20:44:38,689 INFO L130 PetriNetUnfolder]: 11/233 cut-off events. [2022-11-02 20:44:38,689 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:44:38,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 233 events. 11/233 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 738 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 137. Up to 4 conditions per place. [2022-11-02 20:44:38,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 155 transitions, 315 flow [2022-11-02 20:44:38,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 155 transitions, 315 flow [2022-11-02 20:44:38,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:38,719 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;@53fdfc00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:38,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-02 20:44:38,726 INFO L130 PetriNetUnfolder]: 1/34 cut-off events. [2022-11-02 20:44:38,729 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:44:38,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:44:38,730 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] [2022-11-02 20:44:38,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-02 20:44:38,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash 683230813, now seen corresponding path program 1 times [2022-11-02 20:44:38,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:38,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511613558] [2022-11-02 20:44:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:38,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:38,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511613558] [2022-11-02 20:44:38,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511613558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:38,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:39,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:39,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131003065] [2022-11-02 20:44:39,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:39,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:44:39,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:44:39,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:44:39,061 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 155 [2022-11-02 20:44:39,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 155 transitions, 315 flow. Second operand has 2 states, 2 states have (on average 136.0) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:39,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:44:39,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 155 [2022-11-02 20:44:39,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:44:39,237 INFO L130 PetriNetUnfolder]: 5/255 cut-off events. [2022-11-02 20:44:39,237 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:44:39,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 255 events. 5/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 737 event pairs, 1 based on Foata normal form. 12/228 useless extension candidates. Maximal degree in co-relation 172. Up to 7 conditions per place. [2022-11-02 20:44:39,246 INFO L137 encePairwiseOnDemand]: 140/155 looper letters, 3 selfloop transitions, 0 changer transitions 0/138 dead transitions. [2022-11-02 20:44:39,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 138 transitions, 287 flow [2022-11-02 20:44:39,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:44:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:44:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 288 transitions. [2022-11-02 20:44:39,270 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9290322580645162 [2022-11-02 20:44:39,271 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 288 transitions. [2022-11-02 20:44:39,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 288 transitions. [2022-11-02 20:44:39,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:44:39,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 288 transitions. [2022-11-02 20:44:39,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:39,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:39,292 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:39,294 INFO L175 Difference]: Start difference. First operand has 151 places, 155 transitions, 315 flow. Second operand 2 states and 288 transitions. [2022-11-02 20:44:39,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 138 transitions, 287 flow [2022-11-02 20:44:39,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 138 transitions, 287 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:44:39,304 INFO L231 Difference]: Finished difference. Result has 140 places, 138 transitions, 281 flow [2022-11-02 20:44:39,305 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=281, PETRI_PLACES=140, PETRI_TRANSITIONS=138} [2022-11-02 20:44:39,309 INFO L287 CegarLoopForPetriNet]: 151 programPoint places, -11 predicate places. [2022-11-02 20:44:39,309 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 138 transitions, 281 flow [2022-11-02 20:44:39,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.0) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:39,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:44:39,310 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:39,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:44:39,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-02 20:44:39,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash -27980268, now seen corresponding path program 1 times [2022-11-02 20:44:39,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:39,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613273000] [2022-11-02 20:44:39,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:39,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:39,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:44:39,377 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:44:39,379 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2022-11-02 20:44:39,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2022-11-02 20:44:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2022-11-02 20:44:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2022-11-02 20:44:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2022-11-02 20:44:39,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2022-11-02 20:44:39,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2022-11-02 20:44:39,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2022-11-02 20:44:39,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2022-11-02 20:44:39,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2022-11-02 20:44:39,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2022-11-02 20:44:39,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2022-11-02 20:44:39,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2022-11-02 20:44:39,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2022-11-02 20:44:39,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2022-11-02 20:44:39,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2022-11-02 20:44:39,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2022-11-02 20:44:39,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2022-11-02 20:44:39,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2022-11-02 20:44:39,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2022-11-02 20:44:39,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2022-11-02 20:44:39,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2022-11-02 20:44:39,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2022-11-02 20:44:39,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2022-11-02 20:44:39,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2022-11-02 20:44:39,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2022-11-02 20:44:39,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2022-11-02 20:44:39,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2022-11-02 20:44:39,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2022-11-02 20:44:39,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2022-11-02 20:44:39,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2022-11-02 20:44:39,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2022-11-02 20:44:39,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2022-11-02 20:44:39,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2022-11-02 20:44:39,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2022-11-02 20:44:39,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2022-11-02 20:44:39,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2022-11-02 20:44:39,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:44:39,391 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:44:39,394 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:44:39,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:44:39,434 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:44:39,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 213 transitions, 438 flow [2022-11-02 20:44:39,525 INFO L130 PetriNetUnfolder]: 18/371 cut-off events. [2022-11-02 20:44:39,526 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:44:39,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 371 events. 18/371 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1556 event pairs, 0 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 234. Up to 6 conditions per place. [2022-11-02 20:44:39,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 213 transitions, 438 flow [2022-11-02 20:44:39,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 213 transitions, 438 flow [2022-11-02 20:44:39,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:39,543 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;@53fdfc00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:39,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-11-02 20:44:39,548 INFO L130 PetriNetUnfolder]: 1/33 cut-off events. [2022-11-02 20:44:39,549 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:44:39,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:44:39,550 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] [2022-11-02 20:44:39,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-02 20:44:39,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash 537933281, now seen corresponding path program 1 times [2022-11-02 20:44:39,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:39,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879074890] [2022-11-02 20:44:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:39,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:39,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879074890] [2022-11-02 20:44:39,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879074890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:39,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:39,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:39,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643062488] [2022-11-02 20:44:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:39,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:44:39,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:44:39,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:44:39,644 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 213 [2022-11-02 20:44:39,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 213 transitions, 438 flow. Second operand has 2 states, 2 states have (on average 184.0) internal successors, (368), 2 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:39,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:44:39,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 213 [2022-11-02 20:44:39,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:44:39,829 INFO L130 PetriNetUnfolder]: 18/617 cut-off events. [2022-11-02 20:44:39,829 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 20:44:39,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 617 events. 18/617 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3384 event pairs, 7 based on Foata normal form. 35/545 useless extension candidates. Maximal degree in co-relation 374. Up to 21 conditions per place. [2022-11-02 20:44:39,839 INFO L137 encePairwiseOnDemand]: 191/213 looper letters, 5 selfloop transitions, 0 changer transitions 0/188 dead transitions. [2022-11-02 20:44:39,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 188 transitions, 398 flow [2022-11-02 20:44:39,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:44:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:44:39,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 393 transitions. [2022-11-02 20:44:39,844 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9225352112676056 [2022-11-02 20:44:39,844 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 393 transitions. [2022-11-02 20:44:39,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 393 transitions. [2022-11-02 20:44:39,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:44:39,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 393 transitions. [2022-11-02 20:44:39,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 196.5) internal successors, (393), 2 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:39,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:39,851 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:39,851 INFO L175 Difference]: Start difference. First operand has 208 places, 213 transitions, 438 flow. Second operand 2 states and 393 transitions. [2022-11-02 20:44:39,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 188 transitions, 398 flow [2022-11-02 20:44:39,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 188 transitions, 396 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-02 20:44:39,861 INFO L231 Difference]: Finished difference. Result has 191 places, 188 transitions, 386 flow [2022-11-02 20:44:39,861 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=386, PETRI_PLACES=191, PETRI_TRANSITIONS=188} [2022-11-02 20:44:39,862 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, -17 predicate places. [2022-11-02 20:44:39,862 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 188 transitions, 386 flow [2022-11-02 20:44:39,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 184.0) internal successors, (368), 2 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:39,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:44:39,863 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] [2022-11-02 20:44:39,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:44:39,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-02 20:44:39,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:39,875 INFO L85 PathProgramCache]: Analyzing trace with hash -889540045, now seen corresponding path program 1 times [2022-11-02 20:44:39,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:39,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517029327] [2022-11-02 20:44:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:39,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:40,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:40,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517029327] [2022-11-02 20:44:40,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517029327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:40,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:40,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:44:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128783123] [2022-11-02 20:44:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:40,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:44:40,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:40,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:44:40,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:44:40,474 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 213 [2022-11-02 20:44:40,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 188 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 161.5) internal successors, (969), 6 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:40,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:44:40,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 213 [2022-11-02 20:44:40,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:44:42,824 INFO L130 PetriNetUnfolder]: 2930/12510 cut-off events. [2022-11-02 20:44:42,827 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-02 20:44:42,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16995 conditions, 12510 events. 2930/12510 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 139451 event pairs, 1054 based on Foata normal form. 0/10297 useless extension candidates. Maximal degree in co-relation 16990. Up to 2561 conditions per place. [2022-11-02 20:44:42,960 INFO L137 encePairwiseOnDemand]: 204/213 looper letters, 81 selfloop transitions, 14 changer transitions 0/255 dead transitions. [2022-11-02 20:44:42,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 255 transitions, 710 flow [2022-11-02 20:44:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:44:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:44:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1056 transitions. [2022-11-02 20:44:42,964 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8262910798122066 [2022-11-02 20:44:42,964 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1056 transitions. [2022-11-02 20:44:42,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1056 transitions. [2022-11-02 20:44:42,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:44:42,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1056 transitions. [2022-11-02 20:44:42,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:42,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:42,979 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:42,979 INFO L175 Difference]: Start difference. First operand has 191 places, 188 transitions, 386 flow. Second operand 6 states and 1056 transitions. [2022-11-02 20:44:42,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 255 transitions, 710 flow [2022-11-02 20:44:42,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 255 transitions, 710 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:44:42,985 INFO L231 Difference]: Finished difference. Result has 201 places, 202 transitions, 488 flow [2022-11-02 20:44:42,985 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=488, PETRI_PLACES=201, PETRI_TRANSITIONS=202} [2022-11-02 20:44:42,986 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, -7 predicate places. [2022-11-02 20:44:42,987 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 202 transitions, 488 flow [2022-11-02 20:44:42,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.5) internal successors, (969), 6 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:42,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:44:42,988 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] [2022-11-02 20:44:42,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:44:42,988 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-02 20:44:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:42,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1152725886, now seen corresponding path program 1 times [2022-11-02 20:44:42,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:42,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253842130] [2022-11-02 20:44:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:42,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:43,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:43,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253842130] [2022-11-02 20:44:43,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253842130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:43,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:43,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:44:43,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783260590] [2022-11-02 20:44:43,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:43,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:44:43,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:43,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:44:43,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:44:43,446 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 213 [2022-11-02 20:44:43,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 202 transitions, 488 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:43,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:44:43,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 213 [2022-11-02 20:44:43,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:44:47,302 INFO L130 PetriNetUnfolder]: 5937/23184 cut-off events. [2022-11-02 20:44:47,302 INFO L131 PetriNetUnfolder]: For 5329/5375 co-relation queries the response was YES. [2022-11-02 20:44:47,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37019 conditions, 23184 events. 5937/23184 cut-off events. For 5329/5375 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 280018 event pairs, 1240 based on Foata normal form. 15/19511 useless extension candidates. Maximal degree in co-relation 37009. Up to 4756 conditions per place. [2022-11-02 20:44:47,553 INFO L137 encePairwiseOnDemand]: 204/213 looper letters, 117 selfloop transitions, 30 changer transitions 0/309 dead transitions. [2022-11-02 20:44:47,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 309 transitions, 1216 flow [2022-11-02 20:44:47,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:44:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:44:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1065 transitions. [2022-11-02 20:44:47,557 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-02 20:44:47,557 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1065 transitions. [2022-11-02 20:44:47,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1065 transitions. [2022-11-02 20:44:47,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:44:47,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1065 transitions. [2022-11-02 20:44:47,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:47,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:47,565 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:47,565 INFO L175 Difference]: Start difference. First operand has 201 places, 202 transitions, 488 flow. Second operand 6 states and 1065 transitions. [2022-11-02 20:44:47,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 309 transitions, 1216 flow [2022-11-02 20:44:47,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 309 transitions, 1216 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:44:47,595 INFO L231 Difference]: Finished difference. Result has 211 places, 232 transitions, 766 flow [2022-11-02 20:44:47,595 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=766, PETRI_PLACES=211, PETRI_TRANSITIONS=232} [2022-11-02 20:44:47,597 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 3 predicate places. [2022-11-02 20:44:47,598 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 232 transitions, 766 flow [2022-11-02 20:44:47,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:47,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:44:47,600 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] [2022-11-02 20:44:47,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:44:47,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-02 20:44:47,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:47,601 INFO L85 PathProgramCache]: Analyzing trace with hash -149471773, now seen corresponding path program 1 times [2022-11-02 20:44:47,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:47,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475052719] [2022-11-02 20:44:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:47,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:47,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475052719] [2022-11-02 20:44:47,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475052719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:47,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:47,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:47,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043485561] [2022-11-02 20:44:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:47,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:47,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:47,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:47,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:47,656 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 213 [2022-11-02 20:44:47,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 232 transitions, 766 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:47,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:44:47,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 213 [2022-11-02 20:44:47,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:44:54,776 INFO L130 PetriNetUnfolder]: 12778/55771 cut-off events. [2022-11-02 20:44:54,776 INFO L131 PetriNetUnfolder]: For 8300/8589 co-relation queries the response was YES. [2022-11-02 20:44:55,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84518 conditions, 55771 events. 12778/55771 cut-off events. For 8300/8589 co-relation queries the response was YES. Maximal size of possible extension queue 1345. Compared 807150 event pairs, 4247 based on Foata normal form. 8/45399 useless extension candidates. Maximal degree in co-relation 84503. Up to 11992 conditions per place. [2022-11-02 20:44:55,482 INFO L137 encePairwiseOnDemand]: 192/213 looper letters, 106 selfloop transitions, 15 changer transitions 0/289 dead transitions. [2022-11-02 20:44:55,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 289 transitions, 1343 flow [2022-11-02 20:44:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:44:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:44:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2022-11-02 20:44:55,484 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8309859154929577 [2022-11-02 20:44:55,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2022-11-02 20:44:55,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2022-11-02 20:44:55,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:44:55,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2022-11-02 20:44:55,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:55,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:55,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:55,489 INFO L175 Difference]: Start difference. First operand has 211 places, 232 transitions, 766 flow. Second operand 3 states and 531 transitions. [2022-11-02 20:44:55,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 289 transitions, 1343 flow [2022-11-02 20:44:55,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 289 transitions, 1343 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:44:55,520 INFO L231 Difference]: Finished difference. Result has 215 places, 247 transitions, 898 flow [2022-11-02 20:44:55,520 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=898, PETRI_PLACES=215, PETRI_TRANSITIONS=247} [2022-11-02 20:44:55,524 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 7 predicate places. [2022-11-02 20:44:55,524 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 247 transitions, 898 flow [2022-11-02 20:44:55,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:55,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:44:55,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:44:55,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:44:55,529 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-02 20:44:55,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:55,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1683282312, now seen corresponding path program 1 times [2022-11-02 20:44:55,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:55,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872084254] [2022-11-02 20:44:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:55,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:55,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:55,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872084254] [2022-11-02 20:44:55,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872084254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:55,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:55,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:44:55,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592401012] [2022-11-02 20:44:55,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:55,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:44:55,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:55,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:44:55,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:44:55,585 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 213 [2022-11-02 20:44:55,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 247 transitions, 898 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:55,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:44:55,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 213 [2022-11-02 20:44:55,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:09,494 INFO L130 PetriNetUnfolder]: 26287/96858 cut-off events. [2022-11-02 20:45:09,494 INFO L131 PetriNetUnfolder]: For 14905/15337 co-relation queries the response was YES. [2022-11-02 20:45:10,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162016 conditions, 96858 events. 26287/96858 cut-off events. For 14905/15337 co-relation queries the response was YES. Maximal size of possible extension queue 2387. Compared 1454313 event pairs, 16783 based on Foata normal form. 0/79308 useless extension candidates. Maximal degree in co-relation 161999. Up to 32322 conditions per place. [2022-11-02 20:45:10,448 INFO L137 encePairwiseOnDemand]: 203/213 looper letters, 90 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2022-11-02 20:45:10,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 279 transitions, 1232 flow [2022-11-02 20:45:10,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:45:10,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-11-02 20:45:10,450 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.809076682316119 [2022-11-02 20:45:10,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-11-02 20:45:10,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-11-02 20:45:10,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:10,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-11-02 20:45:10,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:10,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:10,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:10,459 INFO L175 Difference]: Start difference. First operand has 215 places, 247 transitions, 898 flow. Second operand 3 states and 517 transitions. [2022-11-02 20:45:10,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 279 transitions, 1232 flow [2022-11-02 20:45:10,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 279 transitions, 1202 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:45:10,769 INFO L231 Difference]: Finished difference. Result has 217 places, 255 transitions, 938 flow [2022-11-02 20:45:10,770 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=938, PETRI_PLACES=217, PETRI_TRANSITIONS=255} [2022-11-02 20:45:10,771 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 9 predicate places. [2022-11-02 20:45:10,771 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 255 transitions, 938 flow [2022-11-02 20:45:10,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:10,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:10,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:10,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:45:10,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-02 20:45:10,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:10,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1912135599, now seen corresponding path program 1 times [2022-11-02 20:45:10,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:10,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878080174] [2022-11-02 20:45:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:10,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:10,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:10,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878080174] [2022-11-02 20:45:10,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878080174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:10,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:10,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:45:10,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239202190] [2022-11-02 20:45:10,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:10,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:45:10,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:10,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:45:10,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:45:10,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 213 [2022-11-02 20:45:10,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 255 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:10,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:10,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 213 [2022-11-02 20:45:10,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:25,676 INFO L130 PetriNetUnfolder]: 29025/104181 cut-off events. [2022-11-02 20:45:25,676 INFO L131 PetriNetUnfolder]: For 26739/30611 co-relation queries the response was YES. [2022-11-02 20:45:26,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186502 conditions, 104181 events. 29025/104181 cut-off events. For 26739/30611 co-relation queries the response was YES. Maximal size of possible extension queue 2620. Compared 1570198 event pairs, 16580 based on Foata normal form. 5/85554 useless extension candidates. Maximal degree in co-relation 186484. Up to 35980 conditions per place. [2022-11-02 20:45:26,615 INFO L137 encePairwiseOnDemand]: 203/213 looper letters, 97 selfloop transitions, 13 changer transitions 0/292 dead transitions. [2022-11-02 20:45:26,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 292 transitions, 1339 flow [2022-11-02 20:45:26,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:45:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:45:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-11-02 20:45:26,618 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8137715179968701 [2022-11-02 20:45:26,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-11-02 20:45:26,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-11-02 20:45:26,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:26,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-11-02 20:45:26,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:26,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:26,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:26,623 INFO L175 Difference]: Start difference. First operand has 217 places, 255 transitions, 938 flow. Second operand 3 states and 520 transitions. [2022-11-02 20:45:26,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 292 transitions, 1339 flow [2022-11-02 20:45:27,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 292 transitions, 1311 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:45:27,011 INFO L231 Difference]: Finished difference. Result has 219 places, 266 transitions, 1032 flow [2022-11-02 20:45:27,011 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1032, PETRI_PLACES=219, PETRI_TRANSITIONS=266} [2022-11-02 20:45:27,012 INFO L287 CegarLoopForPetriNet]: 208 programPoint places, 11 predicate places. [2022-11-02 20:45:27,012 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 266 transitions, 1032 flow [2022-11-02 20:45:27,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:27,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:27,013 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:27,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:45:27,013 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-02 20:45:27,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:27,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1388650604, now seen corresponding path program 1 times [2022-11-02 20:45:27,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:27,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865623776] [2022-11-02 20:45:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:27,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:45:27,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:45:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:45:27,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:45:27,041 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:45:27,041 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2022-11-02 20:45:27,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2022-11-02 20:45:27,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2022-11-02 20:45:27,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2022-11-02 20:45:27,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2022-11-02 20:45:27,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2022-11-02 20:45:27,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2022-11-02 20:45:27,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2022-11-02 20:45:27,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2022-11-02 20:45:27,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2022-11-02 20:45:27,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2022-11-02 20:45:27,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2022-11-02 20:45:27,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2022-11-02 20:45:27,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2022-11-02 20:45:27,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2022-11-02 20:45:27,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2022-11-02 20:45:27,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2022-11-02 20:45:27,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2022-11-02 20:45:27,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2022-11-02 20:45:27,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2022-11-02 20:45:27,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2022-11-02 20:45:27,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2022-11-02 20:45:27,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2022-11-02 20:45:27,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2022-11-02 20:45:27,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2022-11-02 20:45:27,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2022-11-02 20:45:27,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2022-11-02 20:45:27,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2022-11-02 20:45:27,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2022-11-02 20:45:27,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2022-11-02 20:45:27,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2022-11-02 20:45:27,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2022-11-02 20:45:27,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2022-11-02 20:45:27,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2022-11-02 20:45:27,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2022-11-02 20:45:27,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2022-11-02 20:45:27,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2022-11-02 20:45:27,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2022-11-02 20:45:27,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2022-11-02 20:45:27,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2022-11-02 20:45:27,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2022-11-02 20:45:27,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2022-11-02 20:45:27,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2022-11-02 20:45:27,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2022-11-02 20:45:27,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2022-11-02 20:45:27,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2022-11-02 20:45:27,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2022-11-02 20:45:27,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2022-11-02 20:45:27,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2022-11-02 20:45:27,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:45:27,051 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:27,052 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:45:27,052 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:45:27,108 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:45:27,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 271 transitions, 563 flow [2022-11-02 20:45:27,192 INFO L130 PetriNetUnfolder]: 25/509 cut-off events. [2022-11-02 20:45:27,192 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:45:27,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 509 events. 25/509 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2450 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 375. Up to 8 conditions per place. [2022-11-02 20:45:27,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 271 transitions, 563 flow [2022-11-02 20:45:27,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 271 transitions, 563 flow [2022-11-02 20:45:27,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:45:27,213 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;@53fdfc00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:45:27,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-02 20:45:27,217 INFO L130 PetriNetUnfolder]: 1/34 cut-off events. [2022-11-02 20:45:27,217 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:45:27,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:27,217 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] [2022-11-02 20:45:27,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-02 20:45:27,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:27,218 INFO L85 PathProgramCache]: Analyzing trace with hash 957996125, now seen corresponding path program 1 times [2022-11-02 20:45:27,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:27,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739437521] [2022-11-02 20:45:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:27,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:27,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:27,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739437521] [2022-11-02 20:45:27,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739437521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:27,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:27,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:45:27,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693076441] [2022-11-02 20:45:27,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:27,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:45:27,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:27,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:45:27,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:45:27,245 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 271 [2022-11-02 20:45:27,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 271 transitions, 563 flow. Second operand has 2 states, 2 states have (on average 232.0) internal successors, (464), 2 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:27,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:27,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 271 [2022-11-02 20:45:27,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:27,485 INFO L130 PetriNetUnfolder]: 53/1369 cut-off events. [2022-11-02 20:45:27,486 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-02 20:45:27,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 1369 events. 53/1369 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10463 event pairs, 27 based on Foata normal form. 90/1206 useless extension candidates. Maximal degree in co-relation 784. Up to 57 conditions per place. [2022-11-02 20:45:27,511 INFO L137 encePairwiseOnDemand]: 242/271 looper letters, 7 selfloop transitions, 0 changer transitions 0/238 dead transitions. [2022-11-02 20:45:27,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 238 transitions, 511 flow [2022-11-02 20:45:27,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:45:27,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:45:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 498 transitions. [2022-11-02 20:45:27,514 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9188191881918819 [2022-11-02 20:45:27,514 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 498 transitions. [2022-11-02 20:45:27,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 498 transitions. [2022-11-02 20:45:27,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:27,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 498 transitions. [2022-11-02 20:45:27,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 249.0) internal successors, (498), 2 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:27,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:27,518 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:27,518 INFO L175 Difference]: Start difference. First operand has 265 places, 271 transitions, 563 flow. Second operand 2 states and 498 transitions. [2022-11-02 20:45:27,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 238 transitions, 511 flow [2022-11-02 20:45:27,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 238 transitions, 505 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-02 20:45:27,524 INFO L231 Difference]: Finished difference. Result has 242 places, 238 transitions, 491 flow [2022-11-02 20:45:27,524 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=271, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=491, PETRI_PLACES=242, PETRI_TRANSITIONS=238} [2022-11-02 20:45:27,526 INFO L287 CegarLoopForPetriNet]: 265 programPoint places, -23 predicate places. [2022-11-02 20:45:27,526 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 238 transitions, 491 flow [2022-11-02 20:45:27,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 232.0) internal successors, (464), 2 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:27,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:27,526 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] [2022-11-02 20:45:27,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:45:27,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-02 20:45:27,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:27,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1993529961, now seen corresponding path program 1 times [2022-11-02 20:45:27,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:27,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840870818] [2022-11-02 20:45:27,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:27,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:27,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:27,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840870818] [2022-11-02 20:45:27,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840870818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:27,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:27,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:27,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427858006] [2022-11-02 20:45:27,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:27,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:27,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:27,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:27,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:27,852 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 271 [2022-11-02 20:45:27,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 238 transitions, 491 flow. Second operand has 6 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:27,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:27,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 271 [2022-11-02 20:45:27,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand