./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:06:59,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:06:59,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:06:59,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:06:59,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:06:59,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:06:59,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:06:59,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:06:59,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:06:59,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:06:59,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:06:59,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:06:59,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:06:59,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:06:59,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:06:59,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:06:59,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:06:59,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:06:59,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:06:59,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:06:59,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:06:59,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:06:59,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:06:59,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:06:59,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:06:59,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:06:59,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:06:59,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:06:59,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:06:59,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:06:59,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:06:59,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:06:59,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:06:59,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:06:59,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:06:59,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:06:59,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:06:59,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:06:59,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:06:59,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:06:59,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:06:59,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 21:06:59,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:06:59,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:06:59,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:06:59,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:06:59,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:06:59,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:06:59,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:06:59,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:06:59,672 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:06:59,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:06:59,673 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:06:59,674 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:06:59,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:06:59,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:06:59,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:06:59,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:06:59,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:06:59,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:06:59,675 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 21:06:59,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:06:59,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:06:59,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:06:59,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:06:59,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:06:59,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:06:59,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:06:59,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:06:59,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:06:59,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:06:59,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:06:59,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:06:59,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:06:59,679 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:06:59,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:06:59,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:06:59,680 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_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2022-11-02 21:07:00,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:00,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:00,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:00,067 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:00,068 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:00,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2022-11-02 21:07:00,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/data/29659f6e9/353a1a802ac5413cad39189870203bba/FLAG8296bffe4 [2022-11-02 21:07:00,851 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:00,852 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2022-11-02 21:07:00,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/data/29659f6e9/353a1a802ac5413cad39189870203bba/FLAG8296bffe4 [2022-11-02 21:07:01,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/data/29659f6e9/353a1a802ac5413cad39189870203bba [2022-11-02 21:07:01,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:01,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:01,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:01,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:01,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:01,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:01,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe19ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01, skipping insertion in model container [2022-11-02 21:07:01,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:01,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:01,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:01,547 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 21:07:01,915 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2022-11-02 21:07:01,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:01,971 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:07:02,000 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 21:07:02,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2022-11-02 21:07:02,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:02,135 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:07:02,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02 WrapperNode [2022-11-02 21:07:02,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:02,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:02,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:07:02,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:07:02,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,216 INFO L138 Inliner]: procedures = 325, calls = 53, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-11-02 21:07:02,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:02,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:07:02,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:07:02,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:07:02,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,291 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:02,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:02,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:02,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:02,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:02,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:02,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:02,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc207297-320e-45ab-8d2d-0b40537a1eff/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 21:07:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:07:02,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:07:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 21:07:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:07:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-02 21:07:02,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-02 21:07:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:07:02,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:07:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:07:02,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:07:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 21:07:02,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 21:07:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:07:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:07:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:07:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:07:02,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:02,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:02,401 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:07:02,572 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:02,574 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:03,091 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:03,159 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:03,163 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 21:07:03,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:03 BoogieIcfgContainer [2022-11-02 21:07:03,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:03,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:07:03,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:07:03,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:07:03,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:07:01" (1/3) ... [2022-11-02 21:07:03,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abf544c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:03, skipping insertion in model container [2022-11-02 21:07:03,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (2/3) ... [2022-11-02 21:07:03,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abf544c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:03, skipping insertion in model container [2022-11-02 21:07:03,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:03" (3/3) ... [2022-11-02 21:07:03,178 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2022-11-02 21:07:03,188 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:07:03,199 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:07:03,199 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-02 21:07:03,199 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:07:03,372 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-02 21:07:03,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 285 transitions, 677 flow [2022-11-02 21:07:03,524 INFO L130 PetriNetUnfolder]: 7/198 cut-off events. [2022-11-02 21:07:03,525 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 21:07:03,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 198 events. 7/198 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 165. Up to 3 conditions per place. [2022-11-02 21:07:03,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 285 transitions, 677 flow [2022-11-02 21:07:03,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 177 transitions, 405 flow [2022-11-02 21:07:03,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:07:03,552 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;@45db3534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:07:03,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-11-02 21:07:03,565 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2022-11-02 21:07:03,565 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:07:03,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:03,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:03,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 21:07:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1196575310, now seen corresponding path program 1 times [2022-11-02 21:07:03,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:03,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652364481] [2022-11-02 21:07:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:03,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:04,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:04,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652364481] [2022-11-02 21:07:04,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652364481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:04,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:04,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186325405] [2022-11-02 21:07:04,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:04,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:07:04,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:04,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:07:04,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:04,556 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 287 [2022-11-02 21:07:04,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 177 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:04,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:04,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 287 [2022-11-02 21:07:04,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:08,730 INFO L130 PetriNetUnfolder]: 6956/10930 cut-off events. [2022-11-02 21:07:08,731 INFO L131 PetriNetUnfolder]: For 553/580 co-relation queries the response was YES. [2022-11-02 21:07:08,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21601 conditions, 10930 events. 6956/10930 cut-off events. For 553/580 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 66313 event pairs, 3015 based on Foata normal form. 8/10037 useless extension candidates. Maximal degree in co-relation 21521. Up to 7339 conditions per place. [2022-11-02 21:07:08,922 INFO L137 encePairwiseOnDemand]: 269/287 looper letters, 251 selfloop transitions, 21 changer transitions 0/375 dead transitions. [2022-11-02 21:07:08,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 375 transitions, 1528 flow [2022-11-02 21:07:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:07:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1333 transitions. [2022-11-02 21:07:08,948 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7740998838559814 [2022-11-02 21:07:08,949 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1333 transitions. [2022-11-02 21:07:08,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1333 transitions. [2022-11-02 21:07:08,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:08,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1333 transitions. [2022-11-02 21:07:08,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.16666666666666) internal successors, (1333), 6 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:08,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:08,988 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:08,991 INFO L175 Difference]: Start difference. First operand has 191 places, 177 transitions, 405 flow. Second operand 6 states and 1333 transitions. [2022-11-02 21:07:08,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 375 transitions, 1528 flow [2022-11-02 21:07:09,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 375 transitions, 1372 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-02 21:07:09,026 INFO L231 Difference]: Finished difference. Result has 181 places, 189 transitions, 497 flow [2022-11-02 21:07:09,028 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=497, PETRI_PLACES=181, PETRI_TRANSITIONS=189} [2022-11-02 21:07:09,035 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, -10 predicate places. [2022-11-02 21:07:09,035 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 189 transitions, 497 flow [2022-11-02 21:07:09,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:09,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:09,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:09,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:07:09,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 21:07:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash 947714976, now seen corresponding path program 1 times [2022-11-02 21:07:09,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:09,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092946836] [2022-11-02 21:07:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:09,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:09,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092946836] [2022-11-02 21:07:09,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092946836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:09,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:09,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:07:09,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052840203] [2022-11-02 21:07:09,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:09,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:09,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:09,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:09,160 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 287 [2022-11-02 21:07:09,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 189 transitions, 497 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:09,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:09,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 287 [2022-11-02 21:07:09,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:09,739 INFO L130 PetriNetUnfolder]: 777/2173 cut-off events. [2022-11-02 21:07:09,739 INFO L131 PetriNetUnfolder]: For 1115/1300 co-relation queries the response was YES. [2022-11-02 21:07:09,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 2173 events. 777/2173 cut-off events. For 1115/1300 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13765 event pairs, 306 based on Foata normal form. 0/1981 useless extension candidates. Maximal degree in co-relation 2975. Up to 947 conditions per place. [2022-11-02 21:07:09,768 INFO L137 encePairwiseOnDemand]: 284/287 looper letters, 45 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2022-11-02 21:07:09,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 188 transitions, 589 flow [2022-11-02 21:07:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:07:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2022-11-02 21:07:09,771 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8420441347270615 [2022-11-02 21:07:09,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2022-11-02 21:07:09,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2022-11-02 21:07:09,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:09,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2022-11-02 21:07:09,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:09,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:09,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:09,780 INFO L175 Difference]: Start difference. First operand has 181 places, 189 transitions, 497 flow. Second operand 3 states and 725 transitions. [2022-11-02 21:07:09,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 188 transitions, 589 flow [2022-11-02 21:07:09,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 188 transitions, 589 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:07:09,792 INFO L231 Difference]: Finished difference. Result has 182 places, 188 transitions, 499 flow [2022-11-02 21:07:09,793 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=499, PETRI_PLACES=182, PETRI_TRANSITIONS=188} [2022-11-02 21:07:09,794 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, -9 predicate places. [2022-11-02 21:07:09,794 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 188 transitions, 499 flow [2022-11-02 21:07:09,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:09,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:09,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:09,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:07:09,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 21:07:09,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:09,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1507116799, now seen corresponding path program 1 times [2022-11-02 21:07:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:09,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100451917] [2022-11-02 21:07:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:09,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100451917] [2022-11-02 21:07:10,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100451917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:10,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:10,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:10,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433797638] [2022-11-02 21:07:10,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:10,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:07:10,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:10,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:07:10,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:10,380 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 287 [2022-11-02 21:07:10,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 188 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:10,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:10,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 287 [2022-11-02 21:07:10,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:13,066 INFO L130 PetriNetUnfolder]: 6392/11315 cut-off events. [2022-11-02 21:07:13,066 INFO L131 PetriNetUnfolder]: For 6232/6268 co-relation queries the response was YES. [2022-11-02 21:07:13,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29992 conditions, 11315 events. 6392/11315 cut-off events. For 6232/6268 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 76527 event pairs, 1683 based on Foata normal form. 24/10733 useless extension candidates. Maximal degree in co-relation 24960. Up to 8953 conditions per place. [2022-11-02 21:07:13,203 INFO L137 encePairwiseOnDemand]: 278/287 looper letters, 111 selfloop transitions, 24 changer transitions 0/236 dead transitions. [2022-11-02 21:07:13,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 236 transitions, 1012 flow [2022-11-02 21:07:13,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:07:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1126 transitions. [2022-11-02 21:07:13,207 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6538908246225319 [2022-11-02 21:07:13,207 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1126 transitions. [2022-11-02 21:07:13,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1126 transitions. [2022-11-02 21:07:13,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:13,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1126 transitions. [2022-11-02 21:07:13,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.66666666666666) internal successors, (1126), 6 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:13,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:13,217 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:13,217 INFO L175 Difference]: Start difference. First operand has 182 places, 188 transitions, 499 flow. Second operand 6 states and 1126 transitions. [2022-11-02 21:07:13,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 236 transitions, 1012 flow [2022-11-02 21:07:13,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 236 transitions, 1008 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 21:07:13,261 INFO L231 Difference]: Finished difference. Result has 185 places, 207 transitions, 714 flow [2022-11-02 21:07:13,262 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=714, PETRI_PLACES=185, PETRI_TRANSITIONS=207} [2022-11-02 21:07:13,262 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, -6 predicate places. [2022-11-02 21:07:13,263 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 207 transitions, 714 flow [2022-11-02 21:07:13,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:13,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:13,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:13,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:07:13,265 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 21:07:13,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:13,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1055555802, now seen corresponding path program 1 times [2022-11-02 21:07:13,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:13,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151087191] [2022-11-02 21:07:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:13,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:14,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:14,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151087191] [2022-11-02 21:07:14,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151087191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:14,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:14,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 21:07:14,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132561174] [2022-11-02 21:07:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:14,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:07:14,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:07:14,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:07:14,543 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2022-11-02 21:07:14,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 207 transitions, 714 flow. Second operand has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:14,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:14,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2022-11-02 21:07:14,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:19,888 INFO L130 PetriNetUnfolder]: 9736/16194 cut-off events. [2022-11-02 21:07:19,888 INFO L131 PetriNetUnfolder]: For 21265/21290 co-relation queries the response was YES. [2022-11-02 21:07:19,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51238 conditions, 16194 events. 9736/16194 cut-off events. For 21265/21290 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 105846 event pairs, 3520 based on Foata normal form. 238/15431 useless extension candidates. Maximal degree in co-relation 25681. Up to 7720 conditions per place. [2022-11-02 21:07:20,056 INFO L137 encePairwiseOnDemand]: 269/287 looper letters, 493 selfloop transitions, 92 changer transitions 0/664 dead transitions. [2022-11-02 21:07:20,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 664 transitions, 3427 flow [2022-11-02 21:07:20,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:07:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 21:07:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3079 transitions. [2022-11-02 21:07:20,073 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5960123886953155 [2022-11-02 21:07:20,073 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3079 transitions. [2022-11-02 21:07:20,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3079 transitions. [2022-11-02 21:07:20,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:20,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3079 transitions. [2022-11-02 21:07:20,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.05555555555554) internal successors, (3079), 18 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:20,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 287.0) internal successors, (5453), 19 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:20,103 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 287.0) internal successors, (5453), 19 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:20,103 INFO L175 Difference]: Start difference. First operand has 185 places, 207 transitions, 714 flow. Second operand 18 states and 3079 transitions. [2022-11-02 21:07:20,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 664 transitions, 3427 flow [2022-11-02 21:07:20,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 664 transitions, 3276 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 21:07:20,215 INFO L231 Difference]: Finished difference. Result has 213 places, 278 transitions, 1580 flow [2022-11-02 21:07:20,215 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1580, PETRI_PLACES=213, PETRI_TRANSITIONS=278} [2022-11-02 21:07:20,217 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 22 predicate places. [2022-11-02 21:07:20,217 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 278 transitions, 1580 flow [2022-11-02 21:07:20,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:20,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:20,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:20,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:07:20,219 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 21:07:20,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash -993946001, now seen corresponding path program 1 times [2022-11-02 21:07:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:20,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921436806] [2022-11-02 21:07:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:20,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:21,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:21,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921436806] [2022-11-02 21:07:21,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921436806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:21,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:21,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:07:21,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695841573] [2022-11-02 21:07:21,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:21,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:07:21,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:21,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:07:21,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:21,151 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 287 [2022-11-02 21:07:21,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 278 transitions, 1580 flow. Second operand has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:21,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:21,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 287 [2022-11-02 21:07:21,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:27,845 INFO L130 PetriNetUnfolder]: 11963/20700 cut-off events. [2022-11-02 21:07:27,845 INFO L131 PetriNetUnfolder]: For 51240/51286 co-relation queries the response was YES. [2022-11-02 21:07:27,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72096 conditions, 20700 events. 11963/20700 cut-off events. For 51240/51286 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 144934 event pairs, 4135 based on Foata normal form. 247/19695 useless extension candidates. Maximal degree in co-relation 68846. Up to 7595 conditions per place. [2022-11-02 21:07:28,095 INFO L137 encePairwiseOnDemand]: 277/287 looper letters, 453 selfloop transitions, 45 changer transitions 0/594 dead transitions. [2022-11-02 21:07:28,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 594 transitions, 3898 flow [2022-11-02 21:07:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:07:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 21:07:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2877 transitions. [2022-11-02 21:07:28,104 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6265243902439024 [2022-11-02 21:07:28,104 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2877 transitions. [2022-11-02 21:07:28,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2877 transitions. [2022-11-02 21:07:28,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:28,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2877 transitions. [2022-11-02 21:07:28,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 179.8125) internal successors, (2877), 16 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:28,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 287.0) internal successors, (4879), 17 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:28,127 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 287.0) internal successors, (4879), 17 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:28,127 INFO L175 Difference]: Start difference. First operand has 213 places, 278 transitions, 1580 flow. Second operand 16 states and 2877 transitions. [2022-11-02 21:07:28,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 594 transitions, 3898 flow [2022-11-02 21:07:28,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 594 transitions, 3878 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-02 21:07:28,457 INFO L231 Difference]: Finished difference. Result has 237 places, 310 transitions, 1976 flow [2022-11-02 21:07:28,458 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1976, PETRI_PLACES=237, PETRI_TRANSITIONS=310} [2022-11-02 21:07:28,461 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 46 predicate places. [2022-11-02 21:07:28,462 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 310 transitions, 1976 flow [2022-11-02 21:07:28,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:28,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:28,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:28,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:07:28,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 21:07:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:28,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1294752337, now seen corresponding path program 2 times [2022-11-02 21:07:28,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:28,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531336197] [2022-11-02 21:07:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:28,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:29,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:29,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531336197] [2022-11-02 21:07:29,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531336197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:29,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:29,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 21:07:29,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201913517] [2022-11-02 21:07:29,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:29,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:07:29,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:29,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:07:29,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:07:29,703 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2022-11-02 21:07:29,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 310 transitions, 1976 flow. Second operand has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:29,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:29,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2022-11-02 21:07:29,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:37,571 INFO L130 PetriNetUnfolder]: 13882/23947 cut-off events. [2022-11-02 21:07:37,571 INFO L131 PetriNetUnfolder]: For 87053/87152 co-relation queries the response was YES. [2022-11-02 21:07:37,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91293 conditions, 23947 events. 13882/23947 cut-off events. For 87053/87152 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 171206 event pairs, 5122 based on Foata normal form. 281/22747 useless extension candidates. Maximal degree in co-relation 87712. Up to 12873 conditions per place. [2022-11-02 21:07:37,845 INFO L137 encePairwiseOnDemand]: 270/287 looper letters, 504 selfloop transitions, 117 changer transitions 0/700 dead transitions. [2022-11-02 21:07:37,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 700 transitions, 4884 flow [2022-11-02 21:07:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:07:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 21:07:37,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2571 transitions. [2022-11-02 21:07:37,855 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.597212543554007 [2022-11-02 21:07:37,855 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2571 transitions. [2022-11-02 21:07:37,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2571 transitions. [2022-11-02 21:07:37,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:37,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2571 transitions. [2022-11-02 21:07:37,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 171.4) internal successors, (2571), 15 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:37,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:37,876 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:37,877 INFO L175 Difference]: Start difference. First operand has 237 places, 310 transitions, 1976 flow. Second operand 15 states and 2571 transitions. [2022-11-02 21:07:37,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 700 transitions, 4884 flow [2022-11-02 21:07:38,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 700 transitions, 4787 flow, removed 38 selfloop flow, removed 2 redundant places. [2022-11-02 21:07:38,628 INFO L231 Difference]: Finished difference. Result has 261 places, 367 transitions, 3024 flow [2022-11-02 21:07:38,629 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3024, PETRI_PLACES=261, PETRI_TRANSITIONS=367} [2022-11-02 21:07:38,630 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 70 predicate places. [2022-11-02 21:07:38,630 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 367 transitions, 3024 flow [2022-11-02 21:07:38,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:38,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:38,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:38,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:07:38,632 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 21:07:38,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:38,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1788684918, now seen corresponding path program 2 times [2022-11-02 21:07:38,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:38,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979610981] [2022-11-02 21:07:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:38,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:39,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:39,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979610981] [2022-11-02 21:07:39,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979610981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:39,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:39,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:07:39,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841966056] [2022-11-02 21:07:39,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:39,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:07:39,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:39,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:07:39,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:39,338 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 287 [2022-11-02 21:07:39,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 367 transitions, 3024 flow. Second operand has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:39,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:39,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 287 [2022-11-02 21:07:39,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:50,231 INFO L130 PetriNetUnfolder]: 19927/34721 cut-off events. [2022-11-02 21:07:50,232 INFO L131 PetriNetUnfolder]: For 192158/192281 co-relation queries the response was YES. [2022-11-02 21:07:50,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140280 conditions, 34721 events. 19927/34721 cut-off events. For 192158/192281 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 268550 event pairs, 9372 based on Foata normal form. 293/32736 useless extension candidates. Maximal degree in co-relation 139617. Up to 16103 conditions per place. [2022-11-02 21:07:51,084 INFO L137 encePairwiseOnDemand]: 273/287 looper letters, 542 selfloop transitions, 108 changer transitions 0/757 dead transitions. [2022-11-02 21:07:51,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 757 transitions, 6515 flow [2022-11-02 21:07:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:07:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 21:07:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2774 transitions. [2022-11-02 21:07:51,093 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6443670150987224 [2022-11-02 21:07:51,093 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2774 transitions. [2022-11-02 21:07:51,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2774 transitions. [2022-11-02 21:07:51,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:51,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2774 transitions. [2022-11-02 21:07:51,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 184.93333333333334) internal successors, (2774), 15 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:51,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:51,114 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 287.0) internal successors, (4592), 16 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:51,115 INFO L175 Difference]: Start difference. First operand has 261 places, 367 transitions, 3024 flow. Second operand 15 states and 2774 transitions. [2022-11-02 21:07:51,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 757 transitions, 6515 flow [2022-11-02 21:07:51,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 757 transitions, 6314 flow, removed 35 selfloop flow, removed 2 redundant places. [2022-11-02 21:07:51,927 INFO L231 Difference]: Finished difference. Result has 283 places, 419 transitions, 3998 flow [2022-11-02 21:07:51,928 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=2916, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3998, PETRI_PLACES=283, PETRI_TRANSITIONS=419} [2022-11-02 21:07:51,928 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 92 predicate places. [2022-11-02 21:07:51,928 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 419 transitions, 3998 flow [2022-11-02 21:07:51,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:51,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:51,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:51,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:07:51,931 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 21:07:51,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:51,931 INFO L85 PathProgramCache]: Analyzing trace with hash -44735823, now seen corresponding path program 3 times [2022-11-02 21:07:51,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:51,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654324595] [2022-11-02 21:07:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:51,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:52,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:52,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:52,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654324595] [2022-11-02 21:07:52,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654324595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:52,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:52,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 21:07:52,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653557920] [2022-11-02 21:07:52,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:52,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:07:52,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:52,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:07:52,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:07:52,747 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2022-11-02 21:07:52,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 419 transitions, 3998 flow. Second operand has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:52,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:52,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2022-11-02 21:07:52,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:08:08,283 INFO L130 PetriNetUnfolder]: 25833/45016 cut-off events. [2022-11-02 21:08:08,283 INFO L131 PetriNetUnfolder]: For 254072/254333 co-relation queries the response was YES. [2022-11-02 21:08:08,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186280 conditions, 45016 events. 25833/45016 cut-off events. For 254072/254333 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 363986 event pairs, 10723 based on Foata normal form. 388/42540 useless extension candidates. Maximal degree in co-relation 184546. Up to 20119 conditions per place. [2022-11-02 21:08:08,994 INFO L137 encePairwiseOnDemand]: 270/287 looper letters, 637 selfloop transitions, 184 changer transitions 0/900 dead transitions. [2022-11-02 21:08:08,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 900 transitions, 8206 flow [2022-11-02 21:08:08,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:08:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 21:08:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3355 transitions. [2022-11-02 21:08:09,004 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5844947735191638 [2022-11-02 21:08:09,005 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3355 transitions. [2022-11-02 21:08:09,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3355 transitions. [2022-11-02 21:08:09,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:08:09,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3355 transitions. [2022-11-02 21:08:09,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 167.75) internal successors, (3355), 20 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:09,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 287.0) internal successors, (6027), 21 states have internal predecessors, (6027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:09,026 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 287.0) internal successors, (6027), 21 states have internal predecessors, (6027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:09,026 INFO L175 Difference]: Start difference. First operand has 283 places, 419 transitions, 3998 flow. Second operand 20 states and 3355 transitions. [2022-11-02 21:08:09,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 900 transitions, 8206 flow [2022-11-02 21:08:11,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 900 transitions, 8139 flow, removed 33 selfloop flow, removed 1 redundant places. [2022-11-02 21:08:11,399 INFO L231 Difference]: Finished difference. Result has 317 places, 489 transitions, 5653 flow [2022-11-02 21:08:11,400 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5653, PETRI_PLACES=317, PETRI_TRANSITIONS=489} [2022-11-02 21:08:11,401 INFO L287 CegarLoopForPetriNet]: 191 programPoint places, 126 predicate places. [2022-11-02 21:08:11,401 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 489 transitions, 5653 flow [2022-11-02 21:08:11,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.83333333333334) internal successors, (1738), 12 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:11,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:08:11,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:11,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:08:11,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2022-11-02 21:08:11,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1824284082, now seen corresponding path program 3 times [2022-11-02 21:08:11,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:11,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297095779] [2022-11-02 21:08:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:11,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:12,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:12,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297095779] [2022-11-02 21:08:12,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297095779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:12,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:12,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:08:12,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663280670] [2022-11-02 21:08:12,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:12,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:08:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:12,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:08:12,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:12,018 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 287 [2022-11-02 21:08:12,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 489 transitions, 5653 flow. Second operand has 10 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:12,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:08:12,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 287 [2022-11-02 21:08:12,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand