./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/01b_inc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/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_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/01b_inc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/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_1914c552-fcb3-44a8-ab22-c2a54408d633/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 a50cd99e32ae608752174b749acce795b64973c8c13edb78d7146b3ab3630fc9 --- 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 20:29:12,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:29:12,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:29:12,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:29:12,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:29:12,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:29:12,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:29:12,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:29:12,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:29:12,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:29:12,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:29:12,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:29:12,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:29:12,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:29:12,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:29:12,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:29:12,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:29:12,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:29:12,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:29:12,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:29:12,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:29:12,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:29:12,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:29:12,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:29:12,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:29:12,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:29:12,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:29:12,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:29:12,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:29:12,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:29:12,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:29:12,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:29:12,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:29:12,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:29:12,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:29:12,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:29:12,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:29:12,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:29:12,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:29:12,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:29:12,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:29:12,412 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:29:12,450 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:29:12,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:29:12,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:29:12,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:29:12,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:29:12,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:29:12,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:29:12,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:29:12,454 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:29:12,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:29:12,456 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:29:12,456 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:29:12,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:29:12,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:29:12,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:29:12,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:29:12,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:29:12,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:29:12,458 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:29:12,458 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:29:12,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:29:12,459 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:29:12,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:29:12,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:29:12,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:29:12,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:29:12,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:29:12,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:29:12,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:29:12,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:29:12,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:29:12,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:29:12,463 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:29:12,463 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:29:12,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:29:12,463 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_1914c552-fcb3-44a8-ab22-c2a54408d633/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50cd99e32ae608752174b749acce795b64973c8c13edb78d7146b3ab3630fc9 [2022-11-02 20:29:12,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:29:12,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:29:12,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:29:12,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:29:12,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:29:12,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/01b_inc.i [2022-11-02 20:29:12,850 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc/data/4fb7d6283/83ac817392c0476798a36f1d874d6db6/FLAGe3cffdd8c [2022-11-02 20:29:13,326 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:29:13,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/sv-benchmarks/c/pthread-ext/01b_inc.i [2022-11-02 20:29:13,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc/data/4fb7d6283/83ac817392c0476798a36f1d874d6db6/FLAGe3cffdd8c [2022-11-02 20:29:13,675 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc/data/4fb7d6283/83ac817392c0476798a36f1d874d6db6 [2022-11-02 20:29:13,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:29:13,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:29:13,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:29:13,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:29:13,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:29:13,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:29:13" (1/1) ... [2022-11-02 20:29:13,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7623fe85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:13, skipping insertion in model container [2022-11-02 20:29:13,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:29:13" (1/1) ... [2022-11-02 20:29:13,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:29:13,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:29:13,994 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:29:14,197 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_1914c552-fcb3-44a8-ab22-c2a54408d633/sv-benchmarks/c/pthread-ext/01b_inc.i[31005,31018] [2022-11-02 20:29:14,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:29:14,215 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:29:14,240 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:29:14,269 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_1914c552-fcb3-44a8-ab22-c2a54408d633/sv-benchmarks/c/pthread-ext/01b_inc.i[31005,31018] [2022-11-02 20:29:14,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:29:14,312 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:29:14,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14 WrapperNode [2022-11-02 20:29:14,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:29:14,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:29:14,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:29:14,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:29:14,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (1/1) ... [2022-11-02 20:29:14,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (1/1) ... [2022-11-02 20:29:14,367 INFO L138 Inliner]: procedures = 173, calls = 20, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 90 [2022-11-02 20:29:14,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:29:14,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:29:14,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:29:14,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:29:14,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (1/1) ... [2022-11-02 20:29:14,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (1/1) ... [2022-11-02 20:29:14,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (1/1) ... [2022-11-02 20:29:14,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (1/1) ... [2022-11-02 20:29:14,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (1/1) ... [2022-11-02 20:29:14,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (1/1) ... [2022-11-02 20:29:14,409 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (1/1) ... [2022-11-02 20:29:14,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (1/1) ... [2022-11-02 20:29:14,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:29:14,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:29:14,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:29:14,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:29:14,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (1/1) ... [2022-11-02 20:29:14,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:29:14,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:29:14,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:29:14,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1914c552-fcb3-44a8-ab22-c2a54408d633/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:29:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:29:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:29:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:29:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:29:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:29:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:29:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:29:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:29:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:29:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:29:14,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:29:14,515 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 20:29:14,720 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:29:14,722 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:29:14,920 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:29:15,030 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:29:15,032 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:29:15,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:29:15 BoogieIcfgContainer [2022-11-02 20:29:15,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:29:15,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:29:15,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:29:15,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:29:15,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:29:13" (1/3) ... [2022-11-02 20:29:15,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785d934f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:29:15, skipping insertion in model container [2022-11-02 20:29:15,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:29:14" (2/3) ... [2022-11-02 20:29:15,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785d934f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:29:15, skipping insertion in model container [2022-11-02 20:29:15,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:29:15" (3/3) ... [2022-11-02 20:29:15,063 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2022-11-02 20:29:15,074 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:29:15,085 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:29:15,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-02 20:29:15,086 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:29:15,154 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:29:15,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 57 transitions, 119 flow [2022-11-02 20:29:15,254 INFO L130 PetriNetUnfolder]: 3/68 cut-off events. [2022-11-02 20:29:15,254 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:29:15,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 68 events. 3/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2022-11-02 20:29:15,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 57 transitions, 119 flow [2022-11-02 20:29:15,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 57 transitions, 119 flow [2022-11-02 20:29:15,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:29:15,280 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;@3ee4f8ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:29:15,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-02 20:29:15,306 INFO L130 PetriNetUnfolder]: 2/35 cut-off events. [2022-11-02 20:29:15,307 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:29:15,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:15,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:15,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-02 20:29:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:15,314 INFO L85 PathProgramCache]: Analyzing trace with hash 567162050, now seen corresponding path program 1 times [2022-11-02 20:29:15,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:15,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175243442] [2022-11-02 20:29:15,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:15,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:15,598 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 20:29:15,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:15,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175243442] [2022-11-02 20:29:15,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175243442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:15,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:15,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:29:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154638667] [2022-11-02 20:29:15,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:15,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:29:15,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:29:15,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:29:15,663 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 57 [2022-11-02 20:29:15,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 119 flow. Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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 20:29:15,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:15,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 57 [2022-11-02 20:29:15,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:15,731 INFO L130 PetriNetUnfolder]: 1/46 cut-off events. [2022-11-02 20:29:15,731 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:29:15,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 46 events. 1/46 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 7/50 useless extension candidates. Maximal degree in co-relation 30. Up to 7 conditions per place. [2022-11-02 20:29:15,733 INFO L137 encePairwiseOnDemand]: 47/57 looper letters, 6 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2022-11-02 20:29:15,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 101 flow [2022-11-02 20:29:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:29:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:29:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2022-11-02 20:29:15,751 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8596491228070176 [2022-11-02 20:29:15,752 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 98 transitions. [2022-11-02 20:29:15,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 98 transitions. [2022-11-02 20:29:15,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:15,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 98 transitions. [2022-11-02 20:29:15,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 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 20:29:15,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:15,770 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:15,772 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 119 flow. Second operand 2 states and 98 transitions. [2022-11-02 20:29:15,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 101 flow [2022-11-02 20:29:15,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 101 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:29:15,783 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 89 flow [2022-11-02 20:29:15,786 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=89, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2022-11-02 20:29:15,790 INFO L287 CegarLoopForPetriNet]: 58 programPoint places, -13 predicate places. [2022-11-02 20:29:15,790 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 89 flow [2022-11-02 20:29:15,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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 20:29:15,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:15,791 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] [2022-11-02 20:29:15,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:29:15,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-02 20:29:15,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:15,794 INFO L85 PathProgramCache]: Analyzing trace with hash -418106620, now seen corresponding path program 1 times [2022-11-02 20:29:15,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:15,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932172867] [2022-11-02 20:29:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:15,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:15,906 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 20:29:15,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:15,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932172867] [2022-11-02 20:29:15,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932172867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:15,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:15,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:29:15,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620125962] [2022-11-02 20:29:15,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:15,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:29:15,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:15,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:29:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:29:15,910 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 57 [2022-11-02 20:29:15,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 20:29:15,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:15,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 57 [2022-11-02 20:29:15,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:15,943 INFO L130 PetriNetUnfolder]: 1/44 cut-off events. [2022-11-02 20:29:15,943 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:29:15,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 44 events. 1/44 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 57. Up to 6 conditions per place. [2022-11-02 20:29:15,946 INFO L137 encePairwiseOnDemand]: 52/57 looper letters, 7 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2022-11-02 20:29:15,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 105 flow [2022-11-02 20:29:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:29:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:29:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2022-11-02 20:29:15,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2022-11-02 20:29:15,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2022-11-02 20:29:15,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2022-11-02 20:29:15,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:15,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2022-11-02 20:29:15,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 20:29:15,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 20:29:15,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 20:29:15,957 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 89 flow. Second operand 3 states and 117 transitions. [2022-11-02 20:29:15,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 105 flow [2022-11-02 20:29:15,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 105 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:29:15,959 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 91 flow [2022-11-02 20:29:15,959 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2022-11-02 20:29:15,960 INFO L287 CegarLoopForPetriNet]: 58 programPoint places, -13 predicate places. [2022-11-02 20:29:15,960 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 91 flow [2022-11-02 20:29:15,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 20:29:15,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:15,961 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:15,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:29:15,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-02 20:29:15,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:15,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1094032010, now seen corresponding path program 1 times [2022-11-02 20:29:15,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:15,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301014057] [2022-11-02 20:29:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:15,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:29:15,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:29:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:29:16,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:29:16,025 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:29:16,027 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-02 20:29:16,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2022-11-02 20:29:16,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2022-11-02 20:29:16,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2022-11-02 20:29:16,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2022-11-02 20:29:16,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2022-11-02 20:29:16,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2022-11-02 20:29:16,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2022-11-02 20:29:16,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2022-11-02 20:29:16,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2022-11-02 20:29:16,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2022-11-02 20:29:16,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2022-11-02 20:29:16,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2022-11-02 20:29:16,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2022-11-02 20:29:16,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2022-11-02 20:29:16,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2022-11-02 20:29:16,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2022-11-02 20:29:16,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2022-11-02 20:29:16,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2022-11-02 20:29:16,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2022-11-02 20:29:16,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2022-11-02 20:29:16,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:29:16,034 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:29:16,037 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:29:16,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:29:16,104 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:29:16,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 85 transitions, 182 flow [2022-11-02 20:29:16,128 INFO L130 PetriNetUnfolder]: 5/109 cut-off events. [2022-11-02 20:29:16,128 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:29:16,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 5/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 256 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2022-11-02 20:29:16,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 85 transitions, 182 flow [2022-11-02 20:29:16,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 85 transitions, 182 flow [2022-11-02 20:29:16,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:29:16,133 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;@3ee4f8ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:29:16,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-02 20:29:16,140 INFO L130 PetriNetUnfolder]: 2/34 cut-off events. [2022-11-02 20:29:16,140 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:29:16,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:16,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:16,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-02 20:29:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:16,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1053515018, now seen corresponding path program 1 times [2022-11-02 20:29:16,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:16,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754594763] [2022-11-02 20:29:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:16,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:16,172 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 20:29:16,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:16,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754594763] [2022-11-02 20:29:16,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754594763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:16,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:16,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:29:16,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728876311] [2022-11-02 20:29:16,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:16,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:29:16,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:16,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:29:16,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:29:16,184 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 85 [2022-11-02 20:29:16,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 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 20:29:16,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:16,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 85 [2022-11-02 20:29:16,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:16,290 INFO L130 PetriNetUnfolder]: 36/190 cut-off events. [2022-11-02 20:29:16,291 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-02 20:29:16,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 190 events. 36/190 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 760 event pairs, 30 based on Foata normal form. 43/208 useless extension candidates. Maximal degree in co-relation 200. Up to 73 conditions per place. [2022-11-02 20:29:16,299 INFO L137 encePairwiseOnDemand]: 67/85 looper letters, 12 selfloop transitions, 0 changer transitions 0/62 dead transitions. [2022-11-02 20:29:16,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 160 flow [2022-11-02 20:29:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:29:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:29:16,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 140 transitions. [2022-11-02 20:29:16,302 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2022-11-02 20:29:16,302 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 140 transitions. [2022-11-02 20:29:16,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 140 transitions. [2022-11-02 20:29:16,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:16,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 140 transitions. [2022-11-02 20:29:16,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 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 20:29:16,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 20:29:16,304 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 20:29:16,305 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 182 flow. Second operand 2 states and 140 transitions. [2022-11-02 20:29:16,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 160 flow [2022-11-02 20:29:16,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 158 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-02 20:29:16,307 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 134 flow [2022-11-02 20:29:16,307 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2022-11-02 20:29:16,308 INFO L287 CegarLoopForPetriNet]: 87 programPoint places, -21 predicate places. [2022-11-02 20:29:16,308 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 134 flow [2022-11-02 20:29:16,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 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 20:29:16,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:16,309 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] [2022-11-02 20:29:16,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:29:16,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-02 20:29:16,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:16,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1184364025, now seen corresponding path program 1 times [2022-11-02 20:29:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:16,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166446595] [2022-11-02 20:29:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:16,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:16,351 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 20:29:16,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:16,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166446595] [2022-11-02 20:29:16,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166446595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:16,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:16,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:29:16,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399952836] [2022-11-02 20:29:16,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:16,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:29:16,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:16,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:29:16,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:29:16,354 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 85 [2022-11-02 20:29:16,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 20:29:16,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:16,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 85 [2022-11-02 20:29:16,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:16,521 INFO L130 PetriNetUnfolder]: 128/400 cut-off events. [2022-11-02 20:29:16,521 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-11-02 20:29:16,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 400 events. 128/400 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1981 event pairs, 45 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 693. Up to 184 conditions per place. [2022-11-02 20:29:16,525 INFO L137 encePairwiseOnDemand]: 69/85 looper letters, 31 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2022-11-02 20:29:16,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 263 flow [2022-11-02 20:29:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:29:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:29:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2022-11-02 20:29:16,527 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6901960784313725 [2022-11-02 20:29:16,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2022-11-02 20:29:16,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2022-11-02 20:29:16,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:16,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2022-11-02 20:29:16,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 20:29:16,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:16,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:16,529 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 134 flow. Second operand 3 states and 176 transitions. [2022-11-02 20:29:16,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 263 flow [2022-11-02 20:29:16,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 263 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:29:16,532 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 238 flow [2022-11-02 20:29:16,532 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2022-11-02 20:29:16,533 INFO L287 CegarLoopForPetriNet]: 87 programPoint places, -17 predicate places. [2022-11-02 20:29:16,533 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 238 flow [2022-11-02 20:29:16,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 20:29:16,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:16,534 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:16,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:29:16,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-02 20:29:16,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash 494494764, now seen corresponding path program 1 times [2022-11-02 20:29:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:16,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600507021] [2022-11-02 20:29:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:16,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:29:16,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:29:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:29:16,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:29:16,565 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:29:16,565 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-11-02 20:29:16,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2022-11-02 20:29:16,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2022-11-02 20:29:16,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2022-11-02 20:29:16,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2022-11-02 20:29:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2022-11-02 20:29:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2022-11-02 20:29:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2022-11-02 20:29:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2022-11-02 20:29:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2022-11-02 20:29:16,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2022-11-02 20:29:16,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2022-11-02 20:29:16,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2022-11-02 20:29:16,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2022-11-02 20:29:16,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2022-11-02 20:29:16,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2022-11-02 20:29:16,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2022-11-02 20:29:16,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2022-11-02 20:29:16,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2022-11-02 20:29:16,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2022-11-02 20:29:16,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2022-11-02 20:29:16,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2022-11-02 20:29:16,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2022-11-02 20:29:16,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2022-11-02 20:29:16,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2022-11-02 20:29:16,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2022-11-02 20:29:16,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2022-11-02 20:29:16,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2022-11-02 20:29:16,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2022-11-02 20:29:16,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2022-11-02 20:29:16,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2022-11-02 20:29:16,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:29:16,573 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:29:16,573 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:29:16,573 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:29:16,602 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:29:16,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 113 transitions, 247 flow [2022-11-02 20:29:16,624 INFO L130 PetriNetUnfolder]: 7/150 cut-off events. [2022-11-02 20:29:16,624 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:29:16,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 150 events. 7/150 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 429 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 113. Up to 8 conditions per place. [2022-11-02 20:29:16,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 113 transitions, 247 flow [2022-11-02 20:29:16,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 113 transitions, 247 flow [2022-11-02 20:29:16,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:29:16,630 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;@3ee4f8ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:29:16,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-02 20:29:16,634 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2022-11-02 20:29:16,634 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:29:16,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:16,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:16,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-02 20:29:16,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:16,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1844539917, now seen corresponding path program 1 times [2022-11-02 20:29:16,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:16,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820856317] [2022-11-02 20:29:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:16,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:16,655 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 20:29:16,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:16,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820856317] [2022-11-02 20:29:16,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820856317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:16,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:16,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:29:16,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971021167] [2022-11-02 20:29:16,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:16,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:29:16,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:16,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:29:16,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:29:16,658 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 113 [2022-11-02 20:29:16,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 247 flow. Second operand has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 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 20:29:16,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:16,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 113 [2022-11-02 20:29:16,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:16,883 INFO L130 PetriNetUnfolder]: 417/1136 cut-off events. [2022-11-02 20:29:16,883 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2022-11-02 20:29:16,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 1136 events. 417/1136 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7986 event pairs, 390 based on Foata normal form. 259/1253 useless extension candidates. Maximal degree in co-relation 1454. Up to 649 conditions per place. [2022-11-02 20:29:16,896 INFO L137 encePairwiseOnDemand]: 87/113 looper letters, 18 selfloop transitions, 0 changer transitions 0/82 dead transitions. [2022-11-02 20:29:16,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 221 flow [2022-11-02 20:29:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:29:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:29:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 182 transitions. [2022-11-02 20:29:16,899 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8053097345132744 [2022-11-02 20:29:16,899 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 182 transitions. [2022-11-02 20:29:16,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 182 transitions. [2022-11-02 20:29:16,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:16,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 182 transitions. [2022-11-02 20:29:16,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 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 20:29:16,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 20:29:16,903 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 20:29:16,906 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 247 flow. Second operand 2 states and 182 transitions. [2022-11-02 20:29:16,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 221 flow [2022-11-02 20:29:16,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 82 transitions, 215 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-02 20:29:16,913 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 179 flow [2022-11-02 20:29:16,913 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=179, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2022-11-02 20:29:16,916 INFO L287 CegarLoopForPetriNet]: 116 programPoint places, -29 predicate places. [2022-11-02 20:29:16,917 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 179 flow [2022-11-02 20:29:16,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 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 20:29:16,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:16,917 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] [2022-11-02 20:29:16,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:29:16,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-02 20:29:16,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:16,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1218615889, now seen corresponding path program 1 times [2022-11-02 20:29:16,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:16,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293213572] [2022-11-02 20:29:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:16,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:16,960 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 20:29:16,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:16,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293213572] [2022-11-02 20:29:16,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293213572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:16,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:16,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:29:16,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591230488] [2022-11-02 20:29:16,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:16,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:29:16,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:16,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:29:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:29:16,963 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 113 [2022-11-02 20:29:16,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 20:29:16,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:16,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 113 [2022-11-02 20:29:16,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:18,200 INFO L130 PetriNetUnfolder]: 3439/6889 cut-off events. [2022-11-02 20:29:18,200 INFO L131 PetriNetUnfolder]: For 439/439 co-relation queries the response was YES. [2022-11-02 20:29:18,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12667 conditions, 6889 events. 3439/6889 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 55739 event pairs, 1298 based on Foata normal form. 0/6424 useless extension candidates. Maximal degree in co-relation 12661. Up to 3764 conditions per place. [2022-11-02 20:29:18,282 INFO L137 encePairwiseOnDemand]: 89/113 looper letters, 47 selfloop transitions, 18 changer transitions 0/111 dead transitions. [2022-11-02 20:29:18,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 377 flow [2022-11-02 20:29:18,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:29:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:29:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2022-11-02 20:29:18,284 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6607669616519174 [2022-11-02 20:29:18,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2022-11-02 20:29:18,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2022-11-02 20:29:18,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:18,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2022-11-02 20:29:18,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 20:29:18,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 20:29:18,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 20:29:18,289 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 179 flow. Second operand 3 states and 224 transitions. [2022-11-02 20:29:18,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 377 flow [2022-11-02 20:29:18,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 377 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:29:18,294 INFO L231 Difference]: Finished difference. Result has 91 places, 100 transitions, 335 flow [2022-11-02 20:29:18,294 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=91, PETRI_TRANSITIONS=100} [2022-11-02 20:29:18,295 INFO L287 CegarLoopForPetriNet]: 116 programPoint places, -25 predicate places. [2022-11-02 20:29:18,296 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 100 transitions, 335 flow [2022-11-02 20:29:18,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 20:29:18,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:18,296 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:18,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:29:18,297 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-02 20:29:18,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:18,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2064630223, now seen corresponding path program 1 times [2022-11-02 20:29:18,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:18,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591925002] [2022-11-02 20:29:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:18,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:29:18,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:29:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:29:18,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:29:18,369 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:29:18,370 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2022-11-02 20:29:18,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2022-11-02 20:29:18,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2022-11-02 20:29:18,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2022-11-02 20:29:18,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2022-11-02 20:29:18,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (35 of 41 remaining) [2022-11-02 20:29:18,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2022-11-02 20:29:18,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2022-11-02 20:29:18,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2022-11-02 20:29:18,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2022-11-02 20:29:18,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 41 remaining) [2022-11-02 20:29:18,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2022-11-02 20:29:18,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2022-11-02 20:29:18,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2022-11-02 20:29:18,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2022-11-02 20:29:18,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 41 remaining) [2022-11-02 20:29:18,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2022-11-02 20:29:18,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2022-11-02 20:29:18,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2022-11-02 20:29:18,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2022-11-02 20:29:18,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (20 of 41 remaining) [2022-11-02 20:29:18,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2022-11-02 20:29:18,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2022-11-02 20:29:18,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2022-11-02 20:29:18,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2022-11-02 20:29:18,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 41 remaining) [2022-11-02 20:29:18,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2022-11-02 20:29:18,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2022-11-02 20:29:18,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2022-11-02 20:29:18,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2022-11-02 20:29:18,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 41 remaining) [2022-11-02 20:29:18,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2022-11-02 20:29:18,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2022-11-02 20:29:18,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2022-11-02 20:29:18,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2022-11-02 20:29:18,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 41 remaining) [2022-11-02 20:29:18,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2022-11-02 20:29:18,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2022-11-02 20:29:18,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2022-11-02 20:29:18,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2022-11-02 20:29:18,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (0 of 41 remaining) [2022-11-02 20:29:18,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:29:18,388 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:29:18,389 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:29:18,389 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:29:18,437 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:29:18,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 141 transitions, 314 flow [2022-11-02 20:29:18,496 INFO L130 PetriNetUnfolder]: 9/191 cut-off events. [2022-11-02 20:29:18,497 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 20:29:18,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 191 events. 9/191 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 580 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 158. Up to 10 conditions per place. [2022-11-02 20:29:18,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 141 transitions, 314 flow [2022-11-02 20:29:18,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 141 transitions, 314 flow [2022-11-02 20:29:18,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:29:18,504 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;@3ee4f8ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:29:18,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2022-11-02 20:29:18,507 INFO L130 PetriNetUnfolder]: 2/34 cut-off events. [2022-11-02 20:29:18,507 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:29:18,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:18,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:18,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 47 more)] === [2022-11-02 20:29:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash 671445882, now seen corresponding path program 1 times [2022-11-02 20:29:18,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:18,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503820084] [2022-11-02 20:29:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:18,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:18,527 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 20:29:18,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:18,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503820084] [2022-11-02 20:29:18,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503820084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:18,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:18,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:29:18,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233966679] [2022-11-02 20:29:18,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:18,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:29:18,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:18,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:29:18,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:29:18,530 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 141 [2022-11-02 20:29:18,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 141 transitions, 314 flow. Second operand has 2 states, 2 states have (on average 84.0) internal successors, (168), 2 states have internal predecessors, (168), 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 20:29:18,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:18,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 141 [2022-11-02 20:29:18,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:20,043 INFO L130 PetriNetUnfolder]: 3774/7794 cut-off events. [2022-11-02 20:29:20,043 INFO L131 PetriNetUnfolder]: For 2401/2401 co-relation queries the response was YES. [2022-11-02 20:29:20,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14232 conditions, 7794 events. 3774/7794 cut-off events. For 2401/2401 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 69194 event pairs, 3630 based on Foata normal form. 1555/8536 useless extension candidates. Maximal degree in co-relation 10768. Up to 5185 conditions per place. [2022-11-02 20:29:20,140 INFO L137 encePairwiseOnDemand]: 107/141 looper letters, 24 selfloop transitions, 0 changer transitions 0/102 dead transitions. [2022-11-02 20:29:20,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 284 flow [2022-11-02 20:29:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:29:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:29:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 224 transitions. [2022-11-02 20:29:20,142 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7943262411347518 [2022-11-02 20:29:20,142 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 224 transitions. [2022-11-02 20:29:20,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 224 transitions. [2022-11-02 20:29:20,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:20,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 224 transitions. [2022-11-02 20:29:20,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 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 20:29:20,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 20:29:20,144 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 20:29:20,144 INFO L175 Difference]: Start difference. First operand has 145 places, 141 transitions, 314 flow. Second operand 2 states and 224 transitions. [2022-11-02 20:29:20,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 284 flow [2022-11-02 20:29:20,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 272 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-02 20:29:20,151 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 224 flow [2022-11-02 20:29:20,151 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=224, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2022-11-02 20:29:20,153 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, -37 predicate places. [2022-11-02 20:29:20,153 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 224 flow [2022-11-02 20:29:20,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.0) internal successors, (168), 2 states have internal predecessors, (168), 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 20:29:20,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:20,153 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] [2022-11-02 20:29:20,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:29:20,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 47 more)] === [2022-11-02 20:29:20,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1014420700, now seen corresponding path program 1 times [2022-11-02 20:29:20,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:20,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723015678] [2022-11-02 20:29:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:20,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:20,208 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 20:29:20,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:20,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723015678] [2022-11-02 20:29:20,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723015678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:20,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:20,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:29:20,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845414197] [2022-11-02 20:29:20,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:20,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:29:20,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:29:20,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:29:20,211 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2022-11-02 20:29:20,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 20:29:20,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:20,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2022-11-02 20:29:20,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:41,711 INFO L130 PetriNetUnfolder]: 69759/115212 cut-off events. [2022-11-02 20:29:41,711 INFO L131 PetriNetUnfolder]: For 6193/6193 co-relation queries the response was YES. [2022-11-02 20:29:42,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217148 conditions, 115212 events. 69759/115212 cut-off events. For 6193/6193 co-relation queries the response was YES. Maximal size of possible extension queue 4482. Compared 1120223 event pairs, 29205 based on Foata normal form. 0/106740 useless extension candidates. Maximal degree in co-relation 217141. Up to 66562 conditions per place. [2022-11-02 20:29:43,452 INFO L137 encePairwiseOnDemand]: 109/141 looper letters, 63 selfloop transitions, 24 changer transitions 0/141 dead transitions. [2022-11-02 20:29:43,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 141 transitions, 491 flow [2022-11-02 20:29:43,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:29:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:29:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-11-02 20:29:43,458 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6430260047281324 [2022-11-02 20:29:43,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-11-02 20:29:43,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-11-02 20:29:43,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:43,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-11-02 20:29:43,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:43,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:43,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:43,463 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 224 flow. Second operand 3 states and 272 transitions. [2022-11-02 20:29:43,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 141 transitions, 491 flow [2022-11-02 20:29:43,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 141 transitions, 491 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:29:43,473 INFO L231 Difference]: Finished difference. Result has 112 places, 126 transitions, 432 flow [2022-11-02 20:29:43,474 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=112, PETRI_TRANSITIONS=126} [2022-11-02 20:29:43,475 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, -33 predicate places. [2022-11-02 20:29:43,476 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 126 transitions, 432 flow [2022-11-02 20:29:43,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 20:29:43,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:43,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:43,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:29:43,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 47 more)] === [2022-11-02 20:29:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:43,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2032668637, now seen corresponding path program 1 times [2022-11-02 20:29:43,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:43,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495242346] [2022-11-02 20:29:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:43,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:29:43,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:43,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495242346] [2022-11-02 20:29:43,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495242346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:43,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:43,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:29:43,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315622090] [2022-11-02 20:29:43,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:43,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:29:43,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:43,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:29:43,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:29:43,703 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 141 [2022-11-02 20:29:43,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 126 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 20:29:43,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:43,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 141 [2022-11-02 20:29:43,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:44,901 INFO L130 PetriNetUnfolder]: 2780/7920 cut-off events. [2022-11-02 20:29:44,901 INFO L131 PetriNetUnfolder]: For 4034/4034 co-relation queries the response was YES. [2022-11-02 20:29:44,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18015 conditions, 7920 events. 2780/7920 cut-off events. For 4034/4034 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 76711 event pairs, 947 based on Foata normal form. 802/8506 useless extension candidates. Maximal degree in co-relation 18006. Up to 3515 conditions per place. [2022-11-02 20:29:44,983 INFO L137 encePairwiseOnDemand]: 129/141 looper letters, 28 selfloop transitions, 12 changer transitions 0/113 dead transitions. [2022-11-02 20:29:44,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 113 transitions, 453 flow [2022-11-02 20:29:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:29:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:29:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2022-11-02 20:29:44,985 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-11-02 20:29:44,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2022-11-02 20:29:44,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2022-11-02 20:29:44,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:44,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2022-11-02 20:29:44,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 20:29:44,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:44,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:29:44,988 INFO L175 Difference]: Start difference. First operand has 112 places, 126 transitions, 432 flow. Second operand 3 states and 282 transitions. [2022-11-02 20:29:44,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 113 transitions, 453 flow [2022-11-02 20:29:45,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 113 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:29:45,002 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 312 flow [2022-11-02 20:29:45,002 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2022-11-02 20:29:45,003 INFO L287 CegarLoopForPetriNet]: 145 programPoint places, -41 predicate places. [2022-11-02 20:29:45,004 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 312 flow [2022-11-02 20:29:45,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 20:29:45,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:45,004 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:45,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:29:45,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 47 more)] === [2022-11-02 20:29:45,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash -277006207, now seen corresponding path program 1 times [2022-11-02 20:29:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:45,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43673005] [2022-11-02 20:29:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:29:45,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:29:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:29:45,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:29:45,057 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:29:45,057 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (50 of 51 remaining) [2022-11-02 20:29:45,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (49 of 51 remaining) [2022-11-02 20:29:45,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (48 of 51 remaining) [2022-11-02 20:29:45,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (47 of 51 remaining) [2022-11-02 20:29:45,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 51 remaining) [2022-11-02 20:29:45,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 51 remaining) [2022-11-02 20:29:45,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (44 of 51 remaining) [2022-11-02 20:29:45,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (43 of 51 remaining) [2022-11-02 20:29:45,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (42 of 51 remaining) [2022-11-02 20:29:45,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (41 of 51 remaining) [2022-11-02 20:29:45,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (40 of 51 remaining) [2022-11-02 20:29:45,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 51 remaining) [2022-11-02 20:29:45,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 51 remaining) [2022-11-02 20:29:45,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (37 of 51 remaining) [2022-11-02 20:29:45,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (36 of 51 remaining) [2022-11-02 20:29:45,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (35 of 51 remaining) [2022-11-02 20:29:45,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (34 of 51 remaining) [2022-11-02 20:29:45,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (33 of 51 remaining) [2022-11-02 20:29:45,061 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (32 of 51 remaining) [2022-11-02 20:29:45,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (31 of 51 remaining) [2022-11-02 20:29:45,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 51 remaining) [2022-11-02 20:29:45,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 51 remaining) [2022-11-02 20:29:45,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 51 remaining) [2022-11-02 20:29:45,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 51 remaining) [2022-11-02 20:29:45,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 51 remaining) [2022-11-02 20:29:45,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 51 remaining) [2022-11-02 20:29:45,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 51 remaining) [2022-11-02 20:29:45,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 51 remaining) [2022-11-02 20:29:45,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 51 remaining) [2022-11-02 20:29:45,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 51 remaining) [2022-11-02 20:29:45,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (20 of 51 remaining) [2022-11-02 20:29:45,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 51 remaining) [2022-11-02 20:29:45,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 51 remaining) [2022-11-02 20:29:45,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 51 remaining) [2022-11-02 20:29:45,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 51 remaining) [2022-11-02 20:29:45,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 51 remaining) [2022-11-02 20:29:45,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 51 remaining) [2022-11-02 20:29:45,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 51 remaining) [2022-11-02 20:29:45,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 51 remaining) [2022-11-02 20:29:45,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (11 of 51 remaining) [2022-11-02 20:29:45,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 51 remaining) [2022-11-02 20:29:45,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 51 remaining) [2022-11-02 20:29:45,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 51 remaining) [2022-11-02 20:29:45,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 51 remaining) [2022-11-02 20:29:45,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 51 remaining) [2022-11-02 20:29:45,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 51 remaining) [2022-11-02 20:29:45,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 51 remaining) [2022-11-02 20:29:45,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 51 remaining) [2022-11-02 20:29:45,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (2 of 51 remaining) [2022-11-02 20:29:45,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 51 remaining) [2022-11-02 20:29:45,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (0 of 51 remaining) [2022-11-02 20:29:45,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:29:45,068 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 20:29:45,070 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:29:45,070 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-02 20:29:45,127 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:29:45,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 383 flow [2022-11-02 20:29:45,166 INFO L130 PetriNetUnfolder]: 11/232 cut-off events. [2022-11-02 20:29:45,166 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-02 20:29:45,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 232 events. 11/232 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 742 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 204. Up to 12 conditions per place. [2022-11-02 20:29:45,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 383 flow [2022-11-02 20:29:45,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 169 transitions, 383 flow [2022-11-02 20:29:45,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:29:45,175 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;@3ee4f8ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:29:45,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-02 20:29:45,180 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2022-11-02 20:29:45,180 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:29:45,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:45,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:29:45,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-02 20:29:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:45,182 INFO L85 PathProgramCache]: Analyzing trace with hash -277910260, now seen corresponding path program 1 times [2022-11-02 20:29:45,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:45,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557066694] [2022-11-02 20:29:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:45,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:45,202 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 20:29:45,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:45,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557066694] [2022-11-02 20:29:45,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557066694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:45,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:45,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:29:45,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187557169] [2022-11-02 20:29:45,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:45,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:29:45,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:45,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:29:45,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:29:45,205 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 169 [2022-11-02 20:29:45,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 169 transitions, 383 flow. Second operand has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 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 20:29:45,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:45,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 169 [2022-11-02 20:29:45,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:29:55,932 INFO L130 PetriNetUnfolder]: 30387/54124 cut-off events. [2022-11-02 20:29:55,932 INFO L131 PetriNetUnfolder]: For 21845/21845 co-relation queries the response was YES. [2022-11-02 20:29:56,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102036 conditions, 54124 events. 30387/54124 cut-off events. For 21845/21845 co-relation queries the response was YES. Maximal size of possible extension queue 2305. Compared 545530 event pairs, 29550 based on Foata normal form. 9331/58668 useless extension candidates. Maximal degree in co-relation 77442. Up to 38881 conditions per place. [2022-11-02 20:29:57,019 INFO L137 encePairwiseOnDemand]: 127/169 looper letters, 30 selfloop transitions, 0 changer transitions 0/122 dead transitions. [2022-11-02 20:29:57,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 349 flow [2022-11-02 20:29:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:29:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:29:57,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 266 transitions. [2022-11-02 20:29:57,021 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7869822485207101 [2022-11-02 20:29:57,022 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 266 transitions. [2022-11-02 20:29:57,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 266 transitions. [2022-11-02 20:29:57,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:29:57,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 266 transitions. [2022-11-02 20:29:57,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 133.0) internal successors, (266), 2 states have internal predecessors, (266), 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 20:29:57,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 20:29:57,026 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 20:29:57,026 INFO L175 Difference]: Start difference. First operand has 174 places, 169 transitions, 383 flow. Second operand 2 states and 266 transitions. [2022-11-02 20:29:57,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 349 flow [2022-11-02 20:29:57,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 122 transitions, 329 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-02 20:29:57,034 INFO L231 Difference]: Finished difference. Result has 129 places, 122 transitions, 269 flow [2022-11-02 20:29:57,035 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=269, PETRI_PLACES=129, PETRI_TRANSITIONS=122} [2022-11-02 20:29:57,037 INFO L287 CegarLoopForPetriNet]: 174 programPoint places, -45 predicate places. [2022-11-02 20:29:57,037 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 122 transitions, 269 flow [2022-11-02 20:29:57,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 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 20:29:57,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:29:57,038 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] [2022-11-02 20:29:57,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:29:57,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-02 20:29:57,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:29:57,039 INFO L85 PathProgramCache]: Analyzing trace with hash -783759505, now seen corresponding path program 1 times [2022-11-02 20:29:57,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:29:57,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981898895] [2022-11-02 20:29:57,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:29:57,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:29:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:29:57,074 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 20:29:57,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:29:57,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981898895] [2022-11-02 20:29:57,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981898895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:29:57,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:29:57,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:29:57,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696147711] [2022-11-02 20:29:57,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:29:57,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:29:57,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:29:57,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:29:57,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:29:57,078 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 169 [2022-11-02 20:29:57,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 122 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 20:29:57,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:29:57,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 169 [2022-11-02 20:29:57,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand