./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:19:55,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:19:55,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:19:55,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:19:55,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:19:55,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:19:55,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:19:55,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:19:55,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:19:55,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:19:55,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:19:55,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:19:55,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:19:55,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:19:55,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:19:55,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:19:55,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:19:55,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:19:55,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:19:55,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:19:55,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:19:55,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:19:55,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:19:55,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:19:55,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:19:55,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:19:55,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:19:55,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:19:55,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:19:55,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:19:55,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:19:55,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:19:55,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:19:55,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:19:55,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:19:55,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:19:55,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:19:55,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:19:55,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:19:55,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:19:55,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:19:55,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 13:19:55,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:19:55,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:19:55,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:19:55,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:19:55,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:19:55,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:19:55,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:19:55,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:19:55,839 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:19:55,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:19:55,839 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:19:55,839 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:19:55,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:19:55,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:19:55,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:19:55,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:19:55,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:19:55,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:19:55,840 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 13:19:55,841 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:19:55,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:19:55,841 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:19:55,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:19:55,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:19:55,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:19:55,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:19:55,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:19:55,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:19:55,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:19:55,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:19:55,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:19:55,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:19:55,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:19:55,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:19:55,842 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:19:55,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:19:55,843 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:19:55,843 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2022-12-13 13:19:56,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:19:56,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:19:56,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:19:56,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:19:56,038 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:19:56,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-12-13 13:19:58,638 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:19:58,873 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:19:58,873 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2022-12-13 13:19:58,887 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/data/4f1343b19/39f8c25d0b88499d938a75c691d82e26/FLAGecfdd5305 [2022-12-13 13:19:58,901 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/data/4f1343b19/39f8c25d0b88499d938a75c691d82e26 [2022-12-13 13:19:58,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:19:58,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:19:58,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:19:58,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:19:58,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:19:58,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:19:58" (1/1) ... [2022-12-13 13:19:58,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b247c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:58, skipping insertion in model container [2022-12-13 13:19:58,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:19:58" (1/1) ... [2022-12-13 13:19:58,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:19:58,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:19:59,194 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-12-13 13:19:59,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:19:59,297 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:19:59,329 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-12-13 13:19:59,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:19:59,390 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:19:59,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59 WrapperNode [2022-12-13 13:19:59,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:19:59,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:19:59,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:19:59,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:19:59,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (1/1) ... [2022-12-13 13:19:59,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (1/1) ... [2022-12-13 13:19:59,449 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 337 [2022-12-13 13:19:59,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:19:59,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:19:59,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:19:59,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:19:59,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (1/1) ... [2022-12-13 13:19:59,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (1/1) ... [2022-12-13 13:19:59,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (1/1) ... [2022-12-13 13:19:59,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (1/1) ... [2022-12-13 13:19:59,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (1/1) ... [2022-12-13 13:19:59,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (1/1) ... [2022-12-13 13:19:59,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (1/1) ... [2022-12-13 13:19:59,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (1/1) ... [2022-12-13 13:19:59,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:19:59,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:19:59,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:19:59,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:19:59,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (1/1) ... [2022-12-13 13:19:59,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:19:59,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:19:59,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:19:59,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:19:59,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:19:59,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 13:19:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-13 13:19:59,572 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-13 13:19:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:19:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:19:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 13:19:59,572 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 13:19:59,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:19:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 13:19:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:19:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:19:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 13:19:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:19:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:19:59,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:19:59,575 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:19:59,709 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:19:59,711 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:20:00,137 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:20:00,146 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:20:00,147 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-12-13 13:20:00,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:20:00 BoogieIcfgContainer [2022-12-13 13:20:00,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:20:00,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:20:00,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:20:00,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:20:00,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:19:58" (1/3) ... [2022-12-13 13:20:00,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14631526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:20:00, skipping insertion in model container [2022-12-13 13:20:00,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:19:59" (2/3) ... [2022-12-13 13:20:00,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14631526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:20:00, skipping insertion in model container [2022-12-13 13:20:00,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:20:00" (3/3) ... [2022-12-13 13:20:00,158 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2022-12-13 13:20:00,166 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:20:00,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:20:00,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-12-13 13:20:00,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:20:00,294 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 13:20:00,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 369 transitions, 760 flow [2022-12-13 13:20:00,552 INFO L130 PetriNetUnfolder]: 54/658 cut-off events. [2022-12-13 13:20:00,552 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-12-13 13:20:00,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 658 events. 54/658 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3042 event pairs, 0 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 329. Up to 8 conditions per place. [2022-12-13 13:20:00,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 369 transitions, 760 flow [2022-12-13 13:20:00,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 369 transitions, 760 flow [2022-12-13 13:20:00,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:20:00,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 369 transitions, 760 flow [2022-12-13 13:20:00,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 369 transitions, 760 flow [2022-12-13 13:20:00,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 369 transitions, 760 flow [2022-12-13 13:20:00,683 INFO L130 PetriNetUnfolder]: 54/658 cut-off events. [2022-12-13 13:20:00,683 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-12-13 13:20:00,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 658 events. 54/658 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3042 event pairs, 0 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 329. Up to 8 conditions per place. [2022-12-13 13:20:00,739 INFO L119 LiptonReduction]: Number of co-enabled transitions 47560 [2022-12-13 13:20:16,026 WARN L233 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 148 DAG size of output: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 13:20:32,522 WARN L233 SmtUtils]: Spent 11.89s on a formula simplification. DAG size of input: 148 DAG size of output: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 13:20:35,444 INFO L134 LiptonReduction]: Checked pairs total: 231442 [2022-12-13 13:20:35,444 INFO L136 LiptonReduction]: Total number of compositions: 234 [2022-12-13 13:20:35,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:20:35,463 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;@3ccf678a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:20:35,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-12-13 13:20:35,466 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-12-13 13:20:35,467 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:20:35,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:20:35,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 13:20:35,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-13 13:20:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:20:35,472 INFO L85 PathProgramCache]: Analyzing trace with hash 42492, now seen corresponding path program 1 times [2022-12-13 13:20:35,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:20:35,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211428214] [2022-12-13 13:20:35,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:20:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:20:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:20:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:20:35,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:20:35,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211428214] [2022-12-13 13:20:35,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211428214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:20:35,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:20:35,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:20:35,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179413608] [2022-12-13 13:20:35,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:20:35,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:20:35,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:20:35,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:20:35,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:20:35,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 603 [2022-12-13 13:20:35,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 168 transitions, 358 flow. Second operand has 2 states, 2 states have (on average 346.0) internal successors, (692), 2 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:35,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:20:35,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 603 [2022-12-13 13:20:35,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:20:37,586 INFO L130 PetriNetUnfolder]: 7421/19280 cut-off events. [2022-12-13 13:20:37,586 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-12-13 13:20:37,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30839 conditions, 19280 events. 7421/19280 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 184776 event pairs, 7006 based on Foata normal form. 656/17518 useless extension candidates. Maximal degree in co-relation 29146. Up to 11428 conditions per place. [2022-12-13 13:20:37,685 INFO L137 encePairwiseOnDemand]: 589/603 looper letters, 62 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2022-12-13 13:20:37,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 153 transitions, 452 flow [2022-12-13 13:20:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:20:37,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 13:20:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 766 transitions. [2022-12-13 13:20:37,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6351575456053068 [2022-12-13 13:20:37,698 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 766 transitions. [2022-12-13 13:20:37,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 766 transitions. [2022-12-13 13:20:37,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:20:37,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 766 transitions. [2022-12-13 13:20:37,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 383.0) internal successors, (766), 2 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:37,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 603.0) internal successors, (1809), 3 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:37,720 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 603.0) internal successors, (1809), 3 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:37,721 INFO L175 Difference]: Start difference. First operand has 155 places, 168 transitions, 358 flow. Second operand 2 states and 766 transitions. [2022-12-13 13:20:37,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 153 transitions, 452 flow [2022-12-13 13:20:37,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:20:37,731 INFO L231 Difference]: Finished difference. Result has 152 places, 153 transitions, 328 flow [2022-12-13 13:20:37,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=603, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=152, PETRI_TRANSITIONS=153} [2022-12-13 13:20:37,736 INFO L288 CegarLoopForPetriNet]: 155 programPoint places, -3 predicate places. [2022-12-13 13:20:37,736 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 153 transitions, 328 flow [2022-12-13 13:20:37,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 346.0) internal successors, (692), 2 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:37,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:20:37,737 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 13:20:37,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:20:37,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-13 13:20:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:20:37,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1073538920, now seen corresponding path program 1 times [2022-12-13 13:20:37,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:20:37,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993142800] [2022-12-13 13:20:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:20:37,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:20:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:20:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:20:37,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:20:37,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993142800] [2022-12-13 13:20:37,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993142800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:20:37,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:20:37,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:20:37,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63792452] [2022-12-13 13:20:37,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:20:37,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:20:37,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:20:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:20:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:20:37,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 603 [2022-12-13 13:20:37,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 153 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:37,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:20:37,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 603 [2022-12-13 13:20:37,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:20:39,649 INFO L130 PetriNetUnfolder]: 7421/19281 cut-off events. [2022-12-13 13:20:39,649 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-12-13 13:20:39,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30842 conditions, 19281 events. 7421/19281 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 184967 event pairs, 7006 based on Foata normal form. 0/16863 useless extension candidates. Maximal degree in co-relation 30837. Up to 11428 conditions per place. [2022-12-13 13:20:39,750 INFO L137 encePairwiseOnDemand]: 600/603 looper letters, 61 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2022-12-13 13:20:39,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 456 flow [2022-12-13 13:20:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:20:39,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:20:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1087 transitions. [2022-12-13 13:20:39,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6008844665561084 [2022-12-13 13:20:39,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1087 transitions. [2022-12-13 13:20:39,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1087 transitions. [2022-12-13 13:20:39,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:20:39,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1087 transitions. [2022-12-13 13:20:39,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:39,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 603.0) internal successors, (2412), 4 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:39,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 603.0) internal successors, (2412), 4 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:39,767 INFO L175 Difference]: Start difference. First operand has 152 places, 153 transitions, 328 flow. Second operand 3 states and 1087 transitions. [2022-12-13 13:20:39,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 456 flow [2022-12-13 13:20:39,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:20:39,774 INFO L231 Difference]: Finished difference. Result has 155 places, 154 transitions, 340 flow [2022-12-13 13:20:39,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=603, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=155, PETRI_TRANSITIONS=154} [2022-12-13 13:20:39,775 INFO L288 CegarLoopForPetriNet]: 155 programPoint places, 0 predicate places. [2022-12-13 13:20:39,775 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 154 transitions, 340 flow [2022-12-13 13:20:39,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:39,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:20:39,776 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 13:20:39,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:20:39,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-13 13:20:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:20:39,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1981668678, now seen corresponding path program 1 times [2022-12-13 13:20:39,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:20:39,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973184494] [2022-12-13 13:20:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:20:39,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:20:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:20:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:20:39,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:20:39,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973184494] [2022-12-13 13:20:39,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973184494] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:20:39,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016020229] [2022-12-13 13:20:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:20:39,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:20:39,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:20:39,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:20:39,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:20:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:20:40,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:20:40,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:20:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:20:40,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:20:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:20:40,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016020229] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:20:40,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:20:40,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 13:20:40,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183016120] [2022-12-13 13:20:40,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:20:40,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:20:40,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:20:40,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:20:40,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:20:40,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 603 [2022-12-13 13:20:40,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 154 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 341.57142857142856) internal successors, (2391), 7 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:40,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:20:40,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 603 [2022-12-13 13:20:40,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:20:42,207 INFO L130 PetriNetUnfolder]: 7421/19284 cut-off events. [2022-12-13 13:20:42,207 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-12-13 13:20:42,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30858 conditions, 19284 events. 7421/19284 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 184816 event pairs, 7006 based on Foata normal form. 0/16866 useless extension candidates. Maximal degree in co-relation 30851. Up to 11428 conditions per place. [2022-12-13 13:20:42,270 INFO L137 encePairwiseOnDemand]: 600/603 looper letters, 61 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2022-12-13 13:20:42,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 157 transitions, 484 flow [2022-12-13 13:20:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:20:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:20:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2109 transitions. [2022-12-13 13:20:42,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5829187396351575 [2022-12-13 13:20:42,273 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2109 transitions. [2022-12-13 13:20:42,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2109 transitions. [2022-12-13 13:20:42,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:20:42,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2109 transitions. [2022-12-13 13:20:42,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 351.5) internal successors, (2109), 6 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:42,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 603.0) internal successors, (4221), 7 states have internal predecessors, (4221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:42,281 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 603.0) internal successors, (4221), 7 states have internal predecessors, (4221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:42,281 INFO L175 Difference]: Start difference. First operand has 155 places, 154 transitions, 340 flow. Second operand 6 states and 2109 transitions. [2022-12-13 13:20:42,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 157 transitions, 484 flow [2022-12-13 13:20:42,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 157 transitions, 480 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 13:20:42,285 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 372 flow [2022-12-13 13:20:42,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=603, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2022-12-13 13:20:42,286 INFO L288 CegarLoopForPetriNet]: 155 programPoint places, 7 predicate places. [2022-12-13 13:20:42,286 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 372 flow [2022-12-13 13:20:42,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 341.57142857142856) internal successors, (2391), 7 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:42,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:20:42,287 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-12-13 13:20:42,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:20:42,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:20:42,488 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-13 13:20:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:20:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash 756689896, now seen corresponding path program 2 times [2022-12-13 13:20:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:20:42,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435150208] [2022-12-13 13:20:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:20:42,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:20:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:20:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:20:42,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:20:42,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435150208] [2022-12-13 13:20:42,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435150208] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:20:42,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327673021] [2022-12-13 13:20:42,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:20:42,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:20:42,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:20:42,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:20:42,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:20:42,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:20:42,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:20:42,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:20:42,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:20:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:20:42,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:20:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:20:42,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327673021] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:20:42,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:20:42,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 13:20:42,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118800011] [2022-12-13 13:20:42,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:20:42,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 13:20:42,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:20:42,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 13:20:42,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:20:42,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 603 [2022-12-13 13:20:42,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 372 flow. Second operand has 13 states, 13 states have (on average 341.3076923076923) internal successors, (4437), 13 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:42,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:20:42,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 603 [2022-12-13 13:20:42,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:20:45,590 INFO L130 PetriNetUnfolder]: 7421/19290 cut-off events. [2022-12-13 13:20:45,591 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2022-12-13 13:20:45,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30895 conditions, 19290 events. 7421/19290 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 184851 event pairs, 7006 based on Foata normal form. 6/16879 useless extension candidates. Maximal degree in co-relation 30885. Up to 11428 conditions per place. [2022-12-13 13:20:45,678 INFO L137 encePairwiseOnDemand]: 600/603 looper letters, 61 selfloop transitions, 11 changer transitions 0/163 dead transitions. [2022-12-13 13:20:45,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 163 transitions, 552 flow [2022-12-13 13:20:45,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 13:20:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 13:20:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4158 transitions. [2022-12-13 13:20:45,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5746268656716418 [2022-12-13 13:20:45,685 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4158 transitions. [2022-12-13 13:20:45,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4158 transitions. [2022-12-13 13:20:45,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:20:45,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4158 transitions. [2022-12-13 13:20:45,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 346.5) internal successors, (4158), 12 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:45,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 603.0) internal successors, (7839), 13 states have internal predecessors, (7839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:45,713 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 603.0) internal successors, (7839), 13 states have internal predecessors, (7839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:45,713 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 372 flow. Second operand 12 states and 4158 transitions. [2022-12-13 13:20:45,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 163 transitions, 552 flow [2022-12-13 13:20:45,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 163 transitions, 538 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 13:20:45,721 INFO L231 Difference]: Finished difference. Result has 178 places, 163 transitions, 442 flow [2022-12-13 13:20:45,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=603, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=442, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2022-12-13 13:20:45,722 INFO L288 CegarLoopForPetriNet]: 155 programPoint places, 23 predicate places. [2022-12-13 13:20:45,723 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 442 flow [2022-12-13 13:20:45,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 341.3076923076923) internal successors, (4437), 13 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:20:45,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:20:45,725 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-12-13 13:20:45,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 13:20:45,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:20:45,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-13 13:20:45,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:20:45,928 INFO L85 PathProgramCache]: Analyzing trace with hash 364534440, now seen corresponding path program 3 times [2022-12-13 13:20:45,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:20:45,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224266212] [2022-12-13 13:20:45,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:20:45,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:20:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:20:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:20:46,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:20:46,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224266212] [2022-12-13 13:20:46,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224266212] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:20:46,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439229844] [2022-12-13 13:20:46,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:20:46,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:20:46,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:20:46,560 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:20:46,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_004f02a3-d2bb-48ec-a90c-ce878aee4026/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process