./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a 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_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/singleton-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8df6b0e07576c0f44be76a2619065be37971886a948c5dcc3b73910d3c970468 --- 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-38b53e6 [2022-11-25 22:14:40,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:14:40,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:14:40,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:14:40,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:14:40,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:14:40,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:14:40,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:14:40,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:14:40,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:14:40,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:14:40,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:14:40,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:14:40,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:14:40,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:14:40,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:14:40,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:14:40,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:14:40,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:14:40,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:14:40,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:14:40,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:14:40,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:14:40,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:14:40,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:14:40,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:14:40,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:14:40,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:14:40,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:14:40,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:14:40,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:14:40,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:14:40,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:14:40,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:14:40,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:14:40,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:14:40,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:14:40,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:14:40,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:14:40,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:14:40,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:14:40,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-25 22:14:40,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:14:40,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:14:40,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:14:40,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:14:40,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:14:40,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:14:40,672 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:14:40,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:14:40,672 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:14:40,672 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:14:40,673 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:14:40,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:14:40,674 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:14:40,674 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:14:40,674 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:14:40,674 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:14:40,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:14:40,675 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:14:40,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:14:40,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:14:40,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:14:40,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:14:40,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:14:40,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:14:40,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:14:40,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:14:40,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:14:40,677 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 22:14:40,678 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:14:40,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:14:40,678 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:14:40,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:14:40,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:14:40,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:14:40,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:14:40,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:14:40,679 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:14:40,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:14:40,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:14:40,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:14:40,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:14:40,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:14:40,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:14:40,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8df6b0e07576c0f44be76a2619065be37971886a948c5dcc3b73910d3c970468 [2022-11-25 22:14:40,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:14:41,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:14:41,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:14:41,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:14:41,018 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:14:41,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread/singleton-b.i [2022-11-25 22:14:44,107 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:14:44,386 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:14:44,387 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/sv-benchmarks/c/pthread/singleton-b.i [2022-11-25 22:14:44,408 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/data/17ac7ae1e/d2e1e964306e4210ae5a8796cf39c466/FLAG6bd3f7c42 [2022-11-25 22:14:44,428 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/data/17ac7ae1e/d2e1e964306e4210ae5a8796cf39c466 [2022-11-25 22:14:44,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:14:44,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:14:44,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:14:44,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:14:44,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:14:44,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:14:44" (1/1) ... [2022-11-25 22:14:44,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11223e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:44, skipping insertion in model container [2022-11-25 22:14:44,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:14:44" (1/1) ... [2022-11-25 22:14:44,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:14:44,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:14:45,125 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_4d9ed895-e0f2-489c-803f-99982189065d/sv-benchmarks/c/pthread/singleton-b.i[55202,55215] [2022-11-25 22:14:45,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:14:45,170 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:14:45,236 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_4d9ed895-e0f2-489c-803f-99982189065d/sv-benchmarks/c/pthread/singleton-b.i[55202,55215] [2022-11-25 22:14:45,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:14:45,323 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:14:45,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45 WrapperNode [2022-11-25 22:14:45,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:14:45,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:14:45,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:14:45,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:14:45,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (1/1) ... [2022-11-25 22:14:45,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (1/1) ... [2022-11-25 22:14:45,422 INFO L138 Inliner]: procedures = 323, calls = 47, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-11-25 22:14:45,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:14:45,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:14:45,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:14:45,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:14:45,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (1/1) ... [2022-11-25 22:14:45,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (1/1) ... [2022-11-25 22:14:45,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (1/1) ... [2022-11-25 22:14:45,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (1/1) ... [2022-11-25 22:14:45,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (1/1) ... [2022-11-25 22:14:45,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (1/1) ... [2022-11-25 22:14:45,478 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (1/1) ... [2022-11-25 22:14:45,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (1/1) ... [2022-11-25 22:14:45,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:14:45,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:14:45,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:14:45,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:14:45,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (1/1) ... [2022-11-25 22:14:45,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:14:45,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:14:45,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:14:45,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d9ed895-e0f2-489c-803f-99982189065d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:14:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:14:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:14:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:14:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-25 22:14:45,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-25 22:14:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 22:14:45,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 22:14:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 22:14:45,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 22:14:45,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 22:14:45,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 22:14:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:14:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:14:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:14:45,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:14:45,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:14:45,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:14:45,608 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 22:14:45,834 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:14:45,836 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:14:46,234 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:14:46,243 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:14:46,243 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:14:46,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:14:46 BoogieIcfgContainer [2022-11-25 22:14:46,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:14:46,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:14:46,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:14:46,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:14:46,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:14:44" (1/3) ... [2022-11-25 22:14:46,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1224c81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:14:46, skipping insertion in model container [2022-11-25 22:14:46,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:14:45" (2/3) ... [2022-11-25 22:14:46,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1224c81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:14:46, skipping insertion in model container [2022-11-25 22:14:46,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:14:46" (3/3) ... [2022-11-25 22:14:46,257 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton-b.i [2022-11-25 22:14:46,282 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 22:14:46,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:14:46,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-25 22:14:46,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 22:14:46,564 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-25 22:14:46,609 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 22:14:46,626 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 296 transitions, 699 flow [2022-11-25 22:14:46,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 296 transitions, 699 flow [2022-11-25 22:14:46,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 296 transitions, 699 flow [2022-11-25 22:14:46,745 INFO L130 PetriNetUnfolder]: 6/209 cut-off events. [2022-11-25 22:14:46,746 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 22:14:46,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 209 events. 6/209 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 191 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2022-11-25 22:14:46,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 7920 [2022-11-25 22:14:52,984 INFO L134 LiptonReduction]: Checked pairs total: 47161 [2022-11-25 22:14:52,984 INFO L136 LiptonReduction]: Total number of compositions: 176 [2022-11-25 22:14:52,995 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 153 places, 142 transitions, 391 flow [2022-11-25 22:15:06,960 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 313773 states, 313364 states have (on average 5.126893963569523) internal successors, (1606584), 313772 states have internal predecessors, (1606584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:15:07,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:15:07,023 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=FINITE_AUTOMATA, 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;@38b56863, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:15:07,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-25 22:15:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 313773 states, 313364 states have (on average 5.126893963569523) internal successors, (1606584), 313772 states have internal predecessors, (1606584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:15:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 22:15:07,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:15:07,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 22:15:07,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-25 22:15:07,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:15:07,445 INFO L85 PathProgramCache]: Analyzing trace with hash 725504013, now seen corresponding path program 1 times [2022-11-25 22:15:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:15:07,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9052089] [2022-11-25 22:15:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:15:07,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:15:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:15:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:15:07,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:15:07,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9052089] [2022-11-25 22:15:07,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9052089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:15:07,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:15:07,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 22:15:07,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613075316] [2022-11-25 22:15:07,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:15:07,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:15:07,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:15:07,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:15:07,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:15:08,369 INFO L87 Difference]: Start difference. First operand has 313773 states, 313364 states have (on average 5.126893963569523) internal successors, (1606584), 313772 states have internal predecessors, (1606584), 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) Second operand has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:15:12,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:15:12,524 INFO L93 Difference]: Finished difference Result 188955 states and 950720 transitions. [2022-11-25 22:15:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:15:12,527 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2022-11-25 22:15:12,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:15:15,611 INFO L225 Difference]: With dead ends: 188955 [2022-11-25 22:15:15,611 INFO L226 Difference]: Without dead ends: 188950 [2022-11-25 22:15:15,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:15:15,618 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:15:15,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:15:16,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188950 states. [2022-11-25 22:15:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188950 to 188950. [2022-11-25 22:15:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188950 states, 188857 states have (on average 5.034015154323113) internal successors, (950709), 188949 states have internal predecessors, (950709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:15:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188950 states to 188950 states and 950709 transitions. [2022-11-25 22:15:27,888 INFO L78 Accepts]: Start accepts. Automaton has 188950 states and 950709 transitions. Word has length 5 [2022-11-25 22:15:27,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:15:27,889 INFO L495 AbstractCegarLoop]: Abstraction has 188950 states and 950709 transitions. [2022-11-25 22:15:27,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:15:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 188950 states and 950709 transitions. [2022-11-25 22:15:27,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 22:15:27,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:15:27,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:15:27,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:15:27,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-25 22:15:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:15:27,902 INFO L85 PathProgramCache]: Analyzing trace with hash -958845506, now seen corresponding path program 1 times [2022-11-25 22:15:27,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:15:27,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443482211] [2022-11-25 22:15:27,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:15:27,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:15:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:15:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:15:28,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:15:28,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443482211] [2022-11-25 22:15:28,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443482211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:15:28,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:15:28,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:15:28,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018118943] [2022-11-25 22:15:28,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:15:28,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:15:28,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:15:28,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:15:28,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:15:28,374 INFO L87 Difference]: Start difference. First operand 188950 states and 950709 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:15:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:15:34,192 INFO L93 Difference]: Finished difference Result 293631 states and 1461061 transitions. [2022-11-25 22:15:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:15:34,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) Word has length 8 [2022-11-25 22:15:34,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted.