./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8 --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 a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --- 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-2329fc7 [2022-12-13 17:09:35,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:09:35,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:09:35,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:09:35,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:09:35,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:09:35,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:09:35,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:09:35,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:09:35,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:09:35,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:09:35,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:09:35,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:09:35,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:09:35,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:09:35,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:09:35,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:09:35,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:09:35,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:09:35,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:09:35,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:09:35,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:09:35,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:09:35,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:09:35,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:09:35,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:09:35,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:09:35,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:09:35,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:09:35,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:09:35,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:09:35,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:09:35,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:09:35,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:09:35,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:09:35,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:09:35,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:09:35,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:09:35,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:09:35,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:09:35,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:09:35,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 17:09:35,304 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:09:35,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:09:35,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:09:35,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:09:35,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:09:35,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:09:35,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:09:35,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:09:35,306 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:09:35,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:09:35,306 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:09:35,306 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:09:35,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:09:35,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:09:35,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:09:35,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:09:35,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:09:35,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:09:35,307 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 17:09:35,307 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:09:35,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:09:35,307 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:09:35,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:09:35,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:09:35,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:09:35,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:09:35,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:09:35,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:09:35,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:09:35,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:09:35,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:09:35,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:09:35,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:09:35,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:09:35,309 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:09:35,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:09:35,309 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:09:35,309 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 [2022-12-13 17:09:35,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:09:35,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:09:35,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:09:35,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:09:35,506 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:09:35,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2022-12-13 17:09:38,075 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:09:38,264 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:09:38,264 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2022-12-13 17:09:38,275 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/data/7058fbba9/5e211fbb7169440aacbdad1062a734a8/FLAGa614eddfc [2022-12-13 17:09:38,288 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/data/7058fbba9/5e211fbb7169440aacbdad1062a734a8 [2022-12-13 17:09:38,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:09:38,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:09:38,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:09:38,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:09:38,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:09:38,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7976d74e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38, skipping insertion in model container [2022-12-13 17:09:38,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:09:38,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:09:38,577 WARN L237 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_61a6d00d-bc45-46e5-959f-1c8f12f0586b/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2022-12-13 17:09:38,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:09:38,607 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:09:38,628 WARN L237 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_61a6d00d-bc45-46e5-959f-1c8f12f0586b/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i[30212,30225] [2022-12-13 17:09:38,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:09:38,659 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:09:38,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38 WrapperNode [2022-12-13 17:09:38,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:09:38,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:09:38,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:09:38,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:09:38,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,692 INFO L138 Inliner]: procedures = 173, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 152 [2022-12-13 17:09:38,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:09:38,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:09:38,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:09:38,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:09:38,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,712 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:09:38,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:09:38,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:09:38,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:09:38,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (1/1) ... [2022-12-13 17:09:38,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:09:38,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:09:38,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:09:38,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:09:38,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:09:38,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:09:38,770 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 17:09:38,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:09:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:09:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 17:09:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 17:09:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:09:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:09:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:09:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:09:38,772 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 17:09:38,872 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:09:38,875 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:09:39,085 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:09:39,091 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:09:39,091 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-13 17:09:39,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:09:39 BoogieIcfgContainer [2022-12-13 17:09:39,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:09:39,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:09:39,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:09:39,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:09:39,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:09:38" (1/3) ... [2022-12-13 17:09:39,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b220175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:09:39, skipping insertion in model container [2022-12-13 17:09:39,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:09:38" (2/3) ... [2022-12-13 17:09:39,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b220175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:09:39, skipping insertion in model container [2022-12-13 17:09:39,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:09:39" (3/3) ... [2022-12-13 17:09:39,110 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2022-12-13 17:09:39,117 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:09:39,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:09:39,130 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 17:09:39,130 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:09:39,171 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 17:09:39,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 170 transitions, 348 flow [2022-12-13 17:09:39,268 INFO L130 PetriNetUnfolder]: 26/268 cut-off events. [2022-12-13 17:09:39,268 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:09:39,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 268 events. 26/268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 827 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2022-12-13 17:09:39,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 170 transitions, 348 flow [2022-12-13 17:09:39,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 170 transitions, 348 flow [2022-12-13 17:09:39,282 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:09:39,290 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 170 transitions, 348 flow [2022-12-13 17:09:39,292 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 170 transitions, 348 flow [2022-12-13 17:09:39,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 170 transitions, 348 flow [2022-12-13 17:09:39,328 INFO L130 PetriNetUnfolder]: 26/268 cut-off events. [2022-12-13 17:09:39,328 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:09:39,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 268 events. 26/268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 827 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2022-12-13 17:09:39,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 4992 [2022-12-13 17:09:42,254 INFO L134 LiptonReduction]: Checked pairs total: 10383 [2022-12-13 17:09:42,254 INFO L136 LiptonReduction]: Total number of compositions: 144 [2022-12-13 17:09:42,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:09:42,268 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;@62aadb67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:09:42,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 17:09:42,271 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2022-12-13 17:09:42,271 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:09:42,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:09:42,271 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:09:42,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-12-13 17:09:42,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash 18642502, now seen corresponding path program 1 times [2022-12-13 17:09:42,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:42,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706747597] [2022-12-13 17:09:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:42,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:09:42,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:09:42,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706747597] [2022-12-13 17:09:42,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706747597] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:09:42,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:09:42,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:09:42,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268817775] [2022-12-13 17:09:42,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:09:42,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:09:42,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:09:42,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:09:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:09:42,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 314 [2022-12-13 17:09:42,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 51 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 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) [2022-12-13 17:09:42,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:09:42,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 314 [2022-12-13 17:09:42,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:09:42,554 INFO L130 PetriNetUnfolder]: 97/274 cut-off events. [2022-12-13 17:09:42,555 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 17:09:42,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 274 events. 97/274 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1100 event pairs, 64 based on Foata normal form. 48/291 useless extension candidates. Maximal degree in co-relation 469. Up to 204 conditions per place. [2022-12-13 17:09:42,557 INFO L137 encePairwiseOnDemand]: 301/314 looper letters, 30 selfloop transitions, 2 changer transitions 2/47 dead transitions. [2022-12-13 17:09:42,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 170 flow [2022-12-13 17:09:42,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:09:42,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:09:42,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2022-12-13 17:09:42,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5318471337579618 [2022-12-13 17:09:42,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2022-12-13 17:09:42,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2022-12-13 17:09:42,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:09:42,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2022-12-13 17:09:42,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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) [2022-12-13 17:09:42,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-12-13 17:09:42,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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) [2022-12-13 17:09:42,585 INFO L175 Difference]: Start difference. First operand has 42 places, 51 transitions, 110 flow. Second operand 3 states and 501 transitions. [2022-12-13 17:09:42,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 170 flow [2022-12-13 17:09:42,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:09:42,588 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 91 flow [2022-12-13 17:09:42,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2022-12-13 17:09:42,592 INFO L288 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2022-12-13 17:09:42,593 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 91 flow [2022-12-13 17:09:42,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 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) [2022-12-13 17:09:42,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:09:42,593 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 17:09:42,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:09:42,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-12-13 17:09:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:42,594 INFO L85 PathProgramCache]: Analyzing trace with hash 725816682, now seen corresponding path program 1 times [2022-12-13 17:09:42,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:42,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923231954] [2022-12-13 17:09:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:42,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:09:42,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:09:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:09:42,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:09:42,642 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:09:42,643 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-12-13 17:09:42,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2022-12-13 17:09:42,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2022-12-13 17:09:42,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2022-12-13 17:09:42,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2022-12-13 17:09:42,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2022-12-13 17:09:42,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2022-12-13 17:09:42,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2022-12-13 17:09:42,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:09:42,646 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 17:09:42,649 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:09:42,649 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 17:09:42,665 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 17:09:42,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 196 transitions, 410 flow [2022-12-13 17:09:42,699 INFO L130 PetriNetUnfolder]: 43/423 cut-off events. [2022-12-13 17:09:42,699 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 17:09:42,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 423 events. 43/423 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1685 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 270. Up to 9 conditions per place. [2022-12-13 17:09:42,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 196 transitions, 410 flow [2022-12-13 17:09:42,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 196 transitions, 410 flow [2022-12-13 17:09:42,703 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:09:42,703 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 196 transitions, 410 flow [2022-12-13 17:09:42,703 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 196 transitions, 410 flow [2022-12-13 17:09:42,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 196 transitions, 410 flow [2022-12-13 17:09:42,733 INFO L130 PetriNetUnfolder]: 43/423 cut-off events. [2022-12-13 17:09:42,733 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 17:09:42,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 423 events. 43/423 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1685 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 270. Up to 9 conditions per place. [2022-12-13 17:09:42,739 INFO L119 LiptonReduction]: Number of co-enabled transitions 11664 [2022-12-13 17:09:45,466 INFO L134 LiptonReduction]: Checked pairs total: 28007 [2022-12-13 17:09:45,466 INFO L136 LiptonReduction]: Total number of compositions: 162 [2022-12-13 17:09:45,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:09:45,468 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;@62aadb67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:09:45,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-12-13 17:09:45,470 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2022-12-13 17:09:45,470 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:09:45,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:09:45,470 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:09:45,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 17:09:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash 30464355, now seen corresponding path program 1 times [2022-12-13 17:09:45,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:45,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765648776] [2022-12-13 17:09:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:45,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:09:45,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:09:45,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765648776] [2022-12-13 17:09:45,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765648776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:09:45,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:09:45,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:09:45,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244708720] [2022-12-13 17:09:45,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:09:45,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:09:45,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:09:45,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:09:45,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:09:45,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 358 [2022-12-13 17:09:45,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:45,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:09:45,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 358 [2022-12-13 17:09:45,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:09:45,755 INFO L130 PetriNetUnfolder]: 1722/3293 cut-off events. [2022-12-13 17:09:45,755 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-13 17:09:45,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6121 conditions, 3293 events. 1722/3293 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 20250 event pairs, 738 based on Foata normal form. 387/3370 useless extension candidates. Maximal degree in co-relation 806. Up to 2763 conditions per place. [2022-12-13 17:09:45,767 INFO L137 encePairwiseOnDemand]: 342/358 looper letters, 43 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2022-12-13 17:09:45,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 230 flow [2022-12-13 17:09:45,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:09:45,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:09:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2022-12-13 17:09:45,771 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5353817504655494 [2022-12-13 17:09:45,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2022-12-13 17:09:45,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2022-12-13 17:09:45,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:09:45,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2022-12-13 17:09:45,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 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) [2022-12-13 17:09:45,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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) [2022-12-13 17:09:45,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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) [2022-12-13 17:09:45,777 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 150 flow. Second operand 3 states and 575 transitions. [2022-12-13 17:09:45,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 230 flow [2022-12-13 17:09:45,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:09:45,779 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 136 flow [2022-12-13 17:09:45,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2022-12-13 17:09:45,780 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2022-12-13 17:09:45,780 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 136 flow [2022-12-13 17:09:45,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:45,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:09:45,780 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:09:45,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:09:45,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 17:09:45,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash 893500202, now seen corresponding path program 1 times [2022-12-13 17:09:45,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:45,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357191265] [2022-12-13 17:09:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:45,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:09:45,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:09:45,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357191265] [2022-12-13 17:09:45,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357191265] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:09:45,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:09:45,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:09:45,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891050010] [2022-12-13 17:09:45,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:09:45,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:09:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:09:45,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:09:45,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:09:45,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 358 [2022-12-13 17:09:45,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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) [2022-12-13 17:09:45,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:09:45,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 358 [2022-12-13 17:09:45,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:09:46,474 INFO L130 PetriNetUnfolder]: 4520/7643 cut-off events. [2022-12-13 17:09:46,474 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2022-12-13 17:09:46,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15182 conditions, 7643 events. 4520/7643 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 45173 event pairs, 1542 based on Foata normal form. 0/6901 useless extension candidates. Maximal degree in co-relation 15120. Up to 4597 conditions per place. [2022-12-13 17:09:46,498 INFO L137 encePairwiseOnDemand]: 346/358 looper letters, 72 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2022-12-13 17:09:46,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 380 flow [2022-12-13 17:09:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:09:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:09:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2022-12-13 17:09:46,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5260707635009311 [2022-12-13 17:09:46,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2022-12-13 17:09:46,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2022-12-13 17:09:46,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:09:46,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2022-12-13 17:09:46,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 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) [2022-12-13 17:09:46,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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) [2022-12-13 17:09:46,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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) [2022-12-13 17:09:46,506 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 136 flow. Second operand 3 states and 565 transitions. [2022-12-13 17:09:46,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 380 flow [2022-12-13 17:09:46,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:09:46,524 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 190 flow [2022-12-13 17:09:46,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2022-12-13 17:09:46,525 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2022-12-13 17:09:46,525 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 190 flow [2022-12-13 17:09:46,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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) [2022-12-13 17:09:46,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:09:46,525 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 17:09:46,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:09:46,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-12-13 17:09:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash -35833772, now seen corresponding path program 1 times [2022-12-13 17:09:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:46,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155410157] [2022-12-13 17:09:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:46,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:09:46,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:09:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:09:46,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:09:46,556 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:09:46,556 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-12-13 17:09:46,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-12-13 17:09:46,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-12-13 17:09:46,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-12-13 17:09:46,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-12-13 17:09:46,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-12-13 17:09:46,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-12-13 17:09:46,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-12-13 17:09:46,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-12-13 17:09:46,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:09:46,557 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 17:09:46,558 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:09:46,558 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 17:09:46,573 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 17:09:46,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 222 transitions, 474 flow [2022-12-13 17:09:46,646 INFO L130 PetriNetUnfolder]: 65/623 cut-off events. [2022-12-13 17:09:46,646 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 17:09:46,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 623 events. 65/623 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2774 event pairs, 1 based on Foata normal form. 0/527 useless extension candidates. Maximal degree in co-relation 431. Up to 16 conditions per place. [2022-12-13 17:09:46,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 222 transitions, 474 flow [2022-12-13 17:09:46,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 222 transitions, 474 flow [2022-12-13 17:09:46,653 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:09:46,653 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 222 transitions, 474 flow [2022-12-13 17:09:46,654 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 222 transitions, 474 flow [2022-12-13 17:09:46,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 222 transitions, 474 flow [2022-12-13 17:09:46,710 INFO L130 PetriNetUnfolder]: 65/623 cut-off events. [2022-12-13 17:09:46,711 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 17:09:46,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 623 events. 65/623 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2774 event pairs, 1 based on Foata normal form. 0/527 useless extension candidates. Maximal degree in co-relation 431. Up to 16 conditions per place. [2022-12-13 17:09:46,723 INFO L119 LiptonReduction]: Number of co-enabled transitions 19440 [2022-12-13 17:09:49,302 INFO L134 LiptonReduction]: Checked pairs total: 46791 [2022-12-13 17:09:49,302 INFO L136 LiptonReduction]: Total number of compositions: 183 [2022-12-13 17:09:49,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:09:49,305 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;@62aadb67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:09:49,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 17:09:49,306 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2022-12-13 17:09:49,306 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:09:49,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:09:49,306 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:09:49,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-12-13 17:09:49,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:49,307 INFO L85 PathProgramCache]: Analyzing trace with hash 43684121, now seen corresponding path program 1 times [2022-12-13 17:09:49,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:49,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184544215] [2022-12-13 17:09:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:49,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:09:49,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:09:49,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184544215] [2022-12-13 17:09:49,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184544215] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:09:49,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:09:49,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:09:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709642779] [2022-12-13 17:09:49,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:09:49,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:09:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:09:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:09:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:09:49,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 405 [2022-12-13 17:09:49,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 77 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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) [2022-12-13 17:09:49,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:09:49,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 405 [2022-12-13 17:09:49,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:09:50,382 INFO L130 PetriNetUnfolder]: 9981/16803 cut-off events. [2022-12-13 17:09:50,382 INFO L131 PetriNetUnfolder]: For 495/495 co-relation queries the response was YES. [2022-12-13 17:09:50,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31486 conditions, 16803 events. 9981/16803 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 125611 event pairs, 6021 based on Foata normal form. 3908/18978 useless extension candidates. Maximal degree in co-relation 4569. Up to 14302 conditions per place. [2022-12-13 17:09:50,454 INFO L137 encePairwiseOnDemand]: 388/405 looper letters, 46 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2022-12-13 17:09:50,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 266 flow [2022-12-13 17:09:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:09:50,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:09:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2022-12-13 17:09:50,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5251028806584362 [2022-12-13 17:09:50,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2022-12-13 17:09:50,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2022-12-13 17:09:50,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:09:50,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2022-12-13 17:09:50,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 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) [2022-12-13 17:09:50,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 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) [2022-12-13 17:09:50,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 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) [2022-12-13 17:09:50,463 INFO L175 Difference]: Start difference. First operand has 66 places, 77 transitions, 184 flow. Second operand 3 states and 638 transitions. [2022-12-13 17:09:50,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 266 flow [2022-12-13 17:09:50,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:09:50,466 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 168 flow [2022-12-13 17:09:50,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2022-12-13 17:09:50,466 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2022-12-13 17:09:50,467 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 168 flow [2022-12-13 17:09:50,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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) [2022-12-13 17:09:50,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:09:50,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:09:50,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:09:50,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-12-13 17:09:50,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:50,468 INFO L85 PathProgramCache]: Analyzing trace with hash -87365712, now seen corresponding path program 1 times [2022-12-13 17:09:50,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:50,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506486809] [2022-12-13 17:09:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:50,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:09:50,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:09:50,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506486809] [2022-12-13 17:09:50,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506486809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:09:50,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:09:50,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:09:50,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799149187] [2022-12-13 17:09:50,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:09:50,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:09:50,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:09:50,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:09:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:09:50,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 405 [2022-12-13 17:09:50,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:50,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:09:50,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 405 [2022-12-13 17:09:50,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:09:53,542 INFO L130 PetriNetUnfolder]: 34416/52357 cut-off events. [2022-12-13 17:09:53,542 INFO L131 PetriNetUnfolder]: For 1475/1475 co-relation queries the response was YES. [2022-12-13 17:09:53,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103217 conditions, 52357 events. 34416/52357 cut-off events. For 1475/1475 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 375242 event pairs, 13494 based on Foata normal form. 0/47212 useless extension candidates. Maximal degree in co-relation 103164. Up to 33212 conditions per place. [2022-12-13 17:09:53,752 INFO L137 encePairwiseOnDemand]: 390/405 looper letters, 79 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2022-12-13 17:09:53,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 448 flow [2022-12-13 17:09:53,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:09:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:09:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2022-12-13 17:09:53,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5152263374485597 [2022-12-13 17:09:53,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2022-12-13 17:09:53,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2022-12-13 17:09:53,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:09:53,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2022-12-13 17:09:53,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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) [2022-12-13 17:09:53,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 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) [2022-12-13 17:09:53,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 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) [2022-12-13 17:09:53,759 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 168 flow. Second operand 3 states and 626 transitions. [2022-12-13 17:09:53,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 448 flow [2022-12-13 17:09:53,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 445 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:09:53,765 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 240 flow [2022-12-13 17:09:53,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2022-12-13 17:09:53,766 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2022-12-13 17:09:53,766 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 240 flow [2022-12-13 17:09:53,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:09:53,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:09:53,767 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:09:53,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:09:53,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-12-13 17:09:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:53,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1756404887, now seen corresponding path program 1 times [2022-12-13 17:09:53,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:53,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227425123] [2022-12-13 17:09:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:53,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:09:53,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:09:53,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227425123] [2022-12-13 17:09:53,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227425123] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:09:53,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205670292] [2022-12-13 17:09:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:53,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:09:53,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:09:53,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:09:53,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:09:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:53,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:09:53,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:09:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:09:53,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:09:53,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205670292] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:09:53,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:09:53,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 17:09:53,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994888209] [2022-12-13 17:09:53,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:09:53,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:09:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:09:53,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:09:53,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:09:53,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 405 [2022-12-13 17:09:53,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 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) [2022-12-13 17:09:53,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:09:53,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 405 [2022-12-13 17:09:53,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:09:56,706 INFO L130 PetriNetUnfolder]: 27620/43880 cut-off events. [2022-12-13 17:09:56,706 INFO L131 PetriNetUnfolder]: For 17793/18439 co-relation queries the response was YES. [2022-12-13 17:09:56,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101957 conditions, 43880 events. 27620/43880 cut-off events. For 17793/18439 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 338670 event pairs, 19632 based on Foata normal form. 28/39326 useless extension candidates. Maximal degree in co-relation 21325. Up to 37688 conditions per place. [2022-12-13 17:09:56,855 INFO L137 encePairwiseOnDemand]: 399/405 looper letters, 61 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2022-12-13 17:09:56,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 440 flow [2022-12-13 17:09:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:09:56,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:09:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2022-12-13 17:09:56,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5004115226337449 [2022-12-13 17:09:56,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2022-12-13 17:09:56,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2022-12-13 17:09:56,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:09:56,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2022-12-13 17:09:56,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 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) [2022-12-13 17:09:56,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 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) [2022-12-13 17:09:56,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 405.0) internal successors, (1620), 4 states have internal predecessors, (1620), 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) [2022-12-13 17:09:56,860 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 240 flow. Second operand 3 states and 608 transitions. [2022-12-13 17:09:56,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 440 flow [2022-12-13 17:09:56,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 89 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:09:56,871 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 286 flow [2022-12-13 17:09:56,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2022-12-13 17:09:56,871 INFO L288 CegarLoopForPetriNet]: 66 programPoint places, 4 predicate places. [2022-12-13 17:09:56,871 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 286 flow [2022-12-13 17:09:56,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 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) [2022-12-13 17:09:56,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:09:56,872 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 17:09:56,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:09:57,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 17:09:57,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2022-12-13 17:09:57,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1877195965, now seen corresponding path program 1 times [2022-12-13 17:09:57,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:57,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364170363] [2022-12-13 17:09:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:57,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:09:57,092 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:09:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:09:57,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:09:57,103 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:09:57,103 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-12-13 17:09:57,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-12-13 17:09:57,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-12-13 17:09:57,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-12-13 17:09:57,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-12-13 17:09:57,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-12-13 17:09:57,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-12-13 17:09:57,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-12-13 17:09:57,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-12-13 17:09:57,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-12-13 17:09:57,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:09:57,104 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 17:09:57,104 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:09:57,104 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 17:09:57,121 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 17:09:57,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 248 transitions, 540 flow [2022-12-13 17:09:57,195 INFO L130 PetriNetUnfolder]: 99/915 cut-off events. [2022-12-13 17:09:57,195 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 17:09:57,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 915 events. 99/915 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4451 event pairs, 6 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 643. Up to 32 conditions per place. [2022-12-13 17:09:57,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 248 transitions, 540 flow [2022-12-13 17:09:57,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 248 transitions, 540 flow [2022-12-13 17:09:57,201 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:09:57,201 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 248 transitions, 540 flow [2022-12-13 17:09:57,201 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 248 transitions, 540 flow [2022-12-13 17:09:57,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 248 transitions, 540 flow [2022-12-13 17:09:57,272 INFO L130 PetriNetUnfolder]: 99/915 cut-off events. [2022-12-13 17:09:57,272 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 17:09:57,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 915 events. 99/915 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4451 event pairs, 6 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 643. Up to 32 conditions per place. [2022-12-13 17:09:57,288 INFO L119 LiptonReduction]: Number of co-enabled transitions 28512 [2022-12-13 17:10:00,468 INFO L134 LiptonReduction]: Checked pairs total: 70137 [2022-12-13 17:10:00,468 INFO L136 LiptonReduction]: Total number of compositions: 201 [2022-12-13 17:10:00,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:10:00,470 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;@62aadb67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:10:00,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 17:10:00,472 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2022-12-13 17:10:00,472 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:10:00,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:10:00,472 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:10:00,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-12-13 17:10:00,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:00,473 INFO L85 PathProgramCache]: Analyzing trace with hash 58306456, now seen corresponding path program 1 times [2022-12-13 17:10:00,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:00,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204538558] [2022-12-13 17:10:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:00,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:10:00,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:00,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204538558] [2022-12-13 17:10:00,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204538558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:00,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:10:00,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:10:00,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215094671] [2022-12-13 17:10:00,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:00,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:10:00,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:10:00,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:10:00,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 449 [2022-12-13 17:10:00,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 89 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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) [2022-12-13 17:10:00,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:10:00,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 449 [2022-12-13 17:10:00,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:10:08,311 INFO L130 PetriNetUnfolder]: 81602/119817 cut-off events. [2022-12-13 17:10:08,311 INFO L131 PetriNetUnfolder]: For 5018/5018 co-relation queries the response was YES. [2022-12-13 17:10:08,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230625 conditions, 119817 events. 81602/119817 cut-off events. For 5018/5018 co-relation queries the response was YES. Maximal size of possible extension queue 3044. Compared 943654 event pairs, 58556 based on Foata normal form. 33158/142715 useless extension candidates. Maximal degree in co-relation 36201. Up to 108037 conditions per place. [2022-12-13 17:10:08,792 INFO L137 encePairwiseOnDemand]: 430/449 looper letters, 52 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2022-12-13 17:10:08,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 79 transitions, 310 flow [2022-12-13 17:10:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:10:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:10:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2022-12-13 17:10:08,794 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5241276911655531 [2022-12-13 17:10:08,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2022-12-13 17:10:08,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2022-12-13 17:10:08,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:10:08,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2022-12-13 17:10:08,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 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) [2022-12-13 17:10:08,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 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) [2022-12-13 17:10:08,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 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) [2022-12-13 17:10:08,798 INFO L175 Difference]: Start difference. First operand has 77 places, 89 transitions, 222 flow. Second operand 3 states and 706 transitions. [2022-12-13 17:10:08,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 79 transitions, 310 flow [2022-12-13 17:10:08,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 17:10:08,800 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 202 flow [2022-12-13 17:10:08,801 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2022-12-13 17:10:08,801 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2022-12-13 17:10:08,801 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 202 flow [2022-12-13 17:10:08,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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) [2022-12-13 17:10:08,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:10:08,802 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:10:08,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:10:08,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-12-13 17:10:08,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:08,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1890017451, now seen corresponding path program 1 times [2022-12-13 17:10:08,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:08,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522352940] [2022-12-13 17:10:08,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:08,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:10:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:08,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522352940] [2022-12-13 17:10:08,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522352940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:08,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:10:08,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:10:08,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627721474] [2022-12-13 17:10:08,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:08,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:10:08,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:08,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:10:08,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:10:08,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 449 [2022-12-13 17:10:08,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2022-12-13 17:10:08,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:10:08,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 449 [2022-12-13 17:10:08,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:10:35,919 INFO L130 PetriNetUnfolder]: 335619/470206 cut-off events. [2022-12-13 17:10:35,919 INFO L131 PetriNetUnfolder]: For 13587/13587 co-relation queries the response was YES. [2022-12-13 17:10:36,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927469 conditions, 470206 events. 335619/470206 cut-off events. For 13587/13587 co-relation queries the response was YES. Maximal size of possible extension queue 7969. Compared 3712065 event pairs, 145541 based on Foata normal form. 0/425505 useless extension candidates. Maximal degree in co-relation 927415. Up to 302997 conditions per place. [2022-12-13 17:10:38,359 INFO L137 encePairwiseOnDemand]: 431/449 looper letters, 92 selfloop transitions, 12 changer transitions 0/118 dead transitions. [2022-12-13 17:10:38,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 118 transitions, 538 flow [2022-12-13 17:10:38,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:10:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:10:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2022-12-13 17:10:38,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5144766146993318 [2022-12-13 17:10:38,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2022-12-13 17:10:38,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2022-12-13 17:10:38,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:10:38,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2022-12-13 17:10:38,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 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) [2022-12-13 17:10:38,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 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) [2022-12-13 17:10:38,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 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) [2022-12-13 17:10:38,367 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 202 flow. Second operand 3 states and 693 transitions. [2022-12-13 17:10:38,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 118 transitions, 538 flow [2022-12-13 17:10:38,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 535 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:10:38,399 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 292 flow [2022-12-13 17:10:38,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2022-12-13 17:10:38,400 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2022-12-13 17:10:38,400 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 292 flow [2022-12-13 17:10:38,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2022-12-13 17:10:38,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:10:38,401 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:10:38,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:10:38,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-12-13 17:10:38,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:10:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash -150631034, now seen corresponding path program 1 times [2022-12-13 17:10:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:10:38,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997912821] [2022-12-13 17:10:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:10:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:10:38,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:10:38,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997912821] [2022-12-13 17:10:38,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997912821] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:10:38,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301534040] [2022-12-13 17:10:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:10:38,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:10:38,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:10:38,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:10:38,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:10:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:10:38,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:10:38,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:10:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:10:38,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:10:38,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301534040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:10:38,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:10:38,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 17:10:38,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216640151] [2022-12-13 17:10:38,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:10:38,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:10:38,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:10:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:10:38,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:10:38,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 449 [2022-12-13 17:10:38,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 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) [2022-12-13 17:10:38,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:10:38,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 449 [2022-12-13 17:10:38,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:11:02,897 INFO L130 PetriNetUnfolder]: 268603/384870 cut-off events. [2022-12-13 17:11:02,897 INFO L131 PetriNetUnfolder]: For 179189/187990 co-relation queries the response was YES. [2022-12-13 17:11:03,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917210 conditions, 384870 events. 268603/384870 cut-off events. For 179189/187990 co-relation queries the response was YES. Maximal size of possible extension queue 7620. Compared 3222268 event pairs, 194263 based on Foata normal form. 304/345282 useless extension candidates. Maximal degree in co-relation 174569. Up to 341447 conditions per place. [2022-12-13 17:11:04,793 INFO L137 encePairwiseOnDemand]: 442/449 looper letters, 75 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2022-12-13 17:11:04,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 108 transitions, 550 flow [2022-12-13 17:11:04,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:11:04,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:11:04,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2022-12-13 17:11:04,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5025983667409057 [2022-12-13 17:11:04,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2022-12-13 17:11:04,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2022-12-13 17:11:04,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:11:04,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2022-12-13 17:11:04,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 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) [2022-12-13 17:11:04,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 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) [2022-12-13 17:11:04,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 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) [2022-12-13 17:11:04,800 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 292 flow. Second operand 3 states and 677 transitions. [2022-12-13 17:11:04,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 108 transitions, 550 flow [2022-12-13 17:11:05,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 108 transitions, 514 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:11:05,753 INFO L231 Difference]: Finished difference. Result has 81 places, 91 transitions, 352 flow [2022-12-13 17:11:05,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=81, PETRI_TRANSITIONS=91} [2022-12-13 17:11:05,754 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2022-12-13 17:11:05,754 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 91 transitions, 352 flow [2022-12-13 17:11:05,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 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) [2022-12-13 17:11:05,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:11:05,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:11:05,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:11:05,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 17:11:05,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-12-13 17:11:05,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:11:05,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1887738645, now seen corresponding path program 1 times [2022-12-13 17:11:05,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:11:05,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528906968] [2022-12-13 17:11:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:05,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:11:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:11:06,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:11:06,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528906968] [2022-12-13 17:11:06,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528906968] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:11:06,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321899096] [2022-12-13 17:11:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:06,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:11:06,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:11:06,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:11:06,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:11:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:06,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:11:06,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:11:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:11:06,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:11:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:11:06,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321899096] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:11:06,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:11:06,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 17:11:06,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441404610] [2022-12-13 17:11:06,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:11:06,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:11:06,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:11:06,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:11:06,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:11:06,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 449 [2022-12-13 17:11:06,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 352 flow. Second operand has 7 states, 7 states have (on average 213.14285714285714) internal successors, (1492), 7 states have internal predecessors, (1492), 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) [2022-12-13 17:11:06,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:11:06,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 449 [2022-12-13 17:11:06,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:11:28,620 INFO L130 PetriNetUnfolder]: 244674/350121 cut-off events. [2022-12-13 17:11:28,620 INFO L131 PetriNetUnfolder]: For 206401/217685 co-relation queries the response was YES. [2022-12-13 17:11:29,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859046 conditions, 350121 events. 244674/350121 cut-off events. For 206401/217685 co-relation queries the response was YES. Maximal size of possible extension queue 7182. Compared 2855175 event pairs, 31525 based on Foata normal form. 521/313206 useless extension candidates. Maximal degree in co-relation 221402. Up to 301488 conditions per place. [2022-12-13 17:11:30,376 INFO L137 encePairwiseOnDemand]: 445/449 looper letters, 121 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2022-12-13 17:11:30,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 153 transitions, 820 flow [2022-12-13 17:11:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:11:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:11:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1365 transitions. [2022-12-13 17:11:30,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5066815144766147 [2022-12-13 17:11:30,379 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1365 transitions. [2022-12-13 17:11:30,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1365 transitions. [2022-12-13 17:11:30,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:11:30,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1365 transitions. [2022-12-13 17:11:30,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.5) internal successors, (1365), 6 states have internal predecessors, (1365), 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) [2022-12-13 17:11:30,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 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) [2022-12-13 17:11:30,385 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 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) [2022-12-13 17:11:30,385 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 352 flow. Second operand 6 states and 1365 transitions. [2022-12-13 17:11:30,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 153 transitions, 820 flow [2022-12-13 17:11:30,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 153 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:11:30,718 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 382 flow [2022-12-13 17:11:30,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2022-12-13 17:11:30,718 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2022-12-13 17:11:30,719 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 382 flow [2022-12-13 17:11:30,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 213.14285714285714) internal successors, (1492), 7 states have internal predecessors, (1492), 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) [2022-12-13 17:11:30,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:11:30,719 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 17:11:30,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:11:30,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a6d00d-bc45-46e5-959f-1c8f12f0586b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 17:11:30,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-12-13 17:11:30,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:11:30,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1337789224, now seen corresponding path program 1 times [2022-12-13 17:11:30,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:11:30,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411851847] [2022-12-13 17:11:30,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:30,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:11:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:11:30,937 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:11:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:11:30,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:11:30,948 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:11:30,948 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-13 17:11:30,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-12-13 17:11:30,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-12-13 17:11:30,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-12-13 17:11:30,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-12-13 17:11:30,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-12-13 17:11:30,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-12-13 17:11:30,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-12-13 17:11:30,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-12-13 17:11:30,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-12-13 17:11:30,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-12-13 17:11:30,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 17:11:30,949 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 17:11:30,950 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 17:11:30,950 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-12-13 17:11:30,971 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-13 17:11:30,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 274 transitions, 608 flow [2022-12-13 17:11:31,107 INFO L130 PetriNetUnfolder]: 161/1395 cut-off events. [2022-12-13 17:11:31,107 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 17:11:31,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 1395 events. 161/1395 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 7621 event pairs, 23 based on Foata normal form. 0/1189 useless extension candidates. Maximal degree in co-relation 960. Up to 80 conditions per place. [2022-12-13 17:11:31,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 274 transitions, 608 flow [2022-12-13 17:11:31,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 274 transitions, 608 flow [2022-12-13 17:11:31,119 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:11:31,119 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 274 transitions, 608 flow [2022-12-13 17:11:31,119 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 274 transitions, 608 flow [2022-12-13 17:11:31,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 274 transitions, 608 flow [2022-12-13 17:11:31,256 INFO L130 PetriNetUnfolder]: 161/1395 cut-off events. [2022-12-13 17:11:31,256 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 17:11:31,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 1395 events. 161/1395 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 7621 event pairs, 23 based on Foata normal form. 0/1189 useless extension candidates. Maximal degree in co-relation 960. Up to 80 conditions per place. [2022-12-13 17:11:31,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 38880 [2022-12-13 17:11:34,276 INFO L134 LiptonReduction]: Checked pairs total: 92308 [2022-12-13 17:11:34,276 INFO L136 LiptonReduction]: Total number of compositions: 220 [2022-12-13 17:11:34,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:11:34,278 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;@62aadb67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:11:34,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 17:11:34,280 INFO L130 PetriNetUnfolder]: 2/9 cut-off events. [2022-12-13 17:11:34,280 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:11:34,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:11:34,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:11:34,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-12-13 17:11:34,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:11:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash 74311251, now seen corresponding path program 1 times [2022-12-13 17:11:34,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:11:34,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017350802] [2022-12-13 17:11:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:11:34,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:11:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:11:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:11:34,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:11:34,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017350802] [2022-12-13 17:11:34,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017350802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:11:34,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:11:34,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:11:34,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278315278] [2022-12-13 17:11:34,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:11:34,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:11:34,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:11:34,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:11:34,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:11:34,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 494 [2022-12-13 17:11:34,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 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) [2022-12-13 17:11:34,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:11:34,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 494 [2022-12-13 17:11:34,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand