./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.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_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- 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 [2022-12-14 09:16:50,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:16:50,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:16:50,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:16:50,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:16:50,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:16:50,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:16:50,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:16:50,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:16:50,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:16:50,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:16:50,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:16:50,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:16:50,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:16:50,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:16:50,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:16:50,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:16:50,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:16:50,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:16:50,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:16:50,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:16:50,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:16:50,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:16:50,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:16:50,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:16:50,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:16:50,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:16:50,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:16:50,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:16:50,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:16:50,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:16:50,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:16:50,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:16:50,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:16:50,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:16:50,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:16:50,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:16:50,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:16:50,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:16:50,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:16:50,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:16:50,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 09:16:50,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:16:50,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:16:50,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:16:50,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:16:50,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:16:50,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:16:50,502 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:16:50,503 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:16:50,503 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:16:50,503 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:16:50,503 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:16:50,503 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:16:50,503 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:16:50,503 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:16:50,504 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:16:50,504 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:16:50,504 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:16:50,504 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:16:50,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:16:50,505 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:16:50,505 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 09:16:50,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:16:50,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:16:50,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:16:50,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:16:50,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:16:50,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:16:50,506 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 09:16:50,506 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:16:50,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:16:50,506 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:16:50,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:16:50,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:16:50,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:16:50,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:16:50,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:16:50,507 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:16:50,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:16:50,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:16:50,507 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:16:50,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:16:50,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:16:50,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:16:50,508 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_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2022-12-14 09:16:50,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:16:50,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:16:50,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:16:50,724 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:16:50,725 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:16:50,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-12-14 09:16:53,391 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:16:53,609 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:16:53,609 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2022-12-14 09:16:53,621 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/data/bd5fc7858/e34a4bead43b4b6fa42c255b32d55234/FLAG82968f8ed [2022-12-14 09:16:53,635 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/data/bd5fc7858/e34a4bead43b4b6fa42c255b32d55234 [2022-12-14 09:16:53,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:16:53,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:16:53,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:16:53,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:16:53,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:16:53,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:16:53" (1/1) ... [2022-12-14 09:16:53,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a939ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:53, skipping insertion in model container [2022-12-14 09:16:53,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:16:53" (1/1) ... [2022-12-14 09:16:53,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:16:53,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:16:53,973 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_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-12-14 09:16:53,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:16:53,998 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:16:54,023 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_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-12-14 09:16:54,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:16:54,067 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:16:54,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54 WrapperNode [2022-12-14 09:16:54,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:16:54,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:16:54,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:16:54,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:16:54,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (1/1) ... [2022-12-14 09:16:54,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (1/1) ... [2022-12-14 09:16:54,101 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-12-14 09:16:54,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:16:54,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:16:54,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:16:54,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:16:54,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (1/1) ... [2022-12-14 09:16:54,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (1/1) ... [2022-12-14 09:16:54,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (1/1) ... [2022-12-14 09:16:54,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (1/1) ... [2022-12-14 09:16:54,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (1/1) ... [2022-12-14 09:16:54,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (1/1) ... [2022-12-14 09:16:54,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (1/1) ... [2022-12-14 09:16:54,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (1/1) ... [2022-12-14 09:16:54,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:16:54,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:16:54,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:16:54,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:16:54,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (1/1) ... [2022-12-14 09:16:54,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:16:54,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:16:54,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:16:54,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c7d9574-8db4-4130-9db3-ba34c1dbc94d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:16:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:16:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:16:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:16:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:16:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 09:16:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:16:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-14 09:16:54,182 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-14 09:16:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:16:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:16:54,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:16:54,184 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 09:16:54,308 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:16:54,310 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:16:54,494 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:16:54,501 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:16:54,501 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-14 09:16:54,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:16:54 BoogieIcfgContainer [2022-12-14 09:16:54,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:16:54,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:16:54,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:16:54,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:16:54,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:16:53" (1/3) ... [2022-12-14 09:16:54,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121d5105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:16:54, skipping insertion in model container [2022-12-14 09:16:54,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:16:54" (2/3) ... [2022-12-14 09:16:54,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121d5105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:16:54, skipping insertion in model container [2022-12-14 09:16:54,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:16:54" (3/3) ... [2022-12-14 09:16:54,513 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2022-12-14 09:16:54,521 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 09:16:54,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:16:54,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 09:16:54,530 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 09:16:54,579 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-14 09:16:54,607 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:16:54,621 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 150 transitions, 308 flow [2022-12-14 09:16:54,624 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 150 transitions, 308 flow [2022-12-14 09:16:54,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 150 transitions, 308 flow [2022-12-14 09:16:54,689 INFO L130 PetriNetUnfolder]: 23/203 cut-off events. [2022-12-14 09:16:54,689 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-14 09:16:54,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 203 events. 23/203 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 573 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-12-14 09:16:54,698 INFO L119 LiptonReduction]: Number of co-enabled transitions 5192 [2022-12-14 09:16:57,743 INFO L134 LiptonReduction]: Checked pairs total: 11738 [2022-12-14 09:16:57,743 INFO L136 LiptonReduction]: Total number of compositions: 142 [2022-12-14 09:16:57,749 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 47 transitions, 102 flow [2022-12-14 09:16:57,771 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 335 states, 308 states have (on average 2.529220779220779) internal successors, (779), 334 states have internal predecessors, (779), 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) [2022-12-14 09:16:57,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:16:57,788 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b7c2bf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:16:57,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-14 09:16:57,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 308 states have (on average 2.529220779220779) internal successors, (779), 334 states have internal predecessors, (779), 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) [2022-12-14 09:16:57,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 09:16:57,794 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:16:57,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 09:16:57,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-14 09:16:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:16:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash 17907828, now seen corresponding path program 1 times [2022-12-14 09:16:57,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:16:57,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597647230] [2022-12-14 09:16:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:16:57,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:16:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:16:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:16:57,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:16:57,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597647230] [2022-12-14 09:16:57,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597647230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:16:57,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:16:57,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:16:57,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314044188] [2022-12-14 09:16:57,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:16:57,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:16:57,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:16:57,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:16:57,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:16:58,002 INFO L87 Difference]: Start difference. First operand has 335 states, 308 states have (on average 2.529220779220779) internal successors, (779), 334 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 09:16:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:16:58,077 INFO L93 Difference]: Finished difference Result 276 states and 531 transitions. [2022-12-14 09:16:58,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:16:58,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 09:16:58,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:16:58,089 INFO L225 Difference]: With dead ends: 276 [2022-12-14 09:16:58,089 INFO L226 Difference]: Without dead ends: 252 [2022-12-14 09:16:58,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:16:58,094 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:16:58,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 18 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:16:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-12-14 09:16:58,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2022-12-14 09:16:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 242 states have (on average 1.9958677685950412) internal successors, (483), 251 states have internal predecessors, (483), 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) [2022-12-14 09:16:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 483 transitions. [2022-12-14 09:16:58,131 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 483 transitions. Word has length 4 [2022-12-14 09:16:58,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:16:58,131 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 483 transitions. [2022-12-14 09:16:58,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 09:16:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 483 transitions. [2022-12-14 09:16:58,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 09:16:58,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:16:58,132 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 09:16:58,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:16:58,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-12-14 09:16:58,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:16:58,133 INFO L85 PathProgramCache]: Analyzing trace with hash -10000549, now seen corresponding path program 1 times [2022-12-14 09:16:58,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:16:58,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532361309] [2022-12-14 09:16:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:16:58,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:16:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:16:58,154 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:16:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:16:58,179 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:16:58,179 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:16:58,181 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-14 09:16:58,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-12-14 09:16:58,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-12-14 09:16:58,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-12-14 09:16:58,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-12-14 09:16:58,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-12-14 09:16:58,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-12-14 09:16:58,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-12-14 09:16:58,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-12-14 09:16:58,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-12-14 09:16:58,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-12-14 09:16:58,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:16:58,186 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 09:16:58,187 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 09:16:58,187 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 09:16:58,205 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 09:16:58,209 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:16:58,209 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 196 transitions, 410 flow [2022-12-14 09:16:58,209 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 196 transitions, 410 flow [2022-12-14 09:16:58,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 196 transitions, 410 flow [2022-12-14 09:16:58,246 INFO L130 PetriNetUnfolder]: 40/333 cut-off events. [2022-12-14 09:16:58,246 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 09:16:58,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 333 events. 40/333 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1137 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 205. Up to 9 conditions per place. [2022-12-14 09:16:58,255 INFO L119 LiptonReduction]: Number of co-enabled transitions 15224 [2022-12-14 09:17:01,262 INFO L134 LiptonReduction]: Checked pairs total: 62076 [2022-12-14 09:17:01,262 INFO L136 LiptonReduction]: Total number of compositions: 168 [2022-12-14 09:17:01,264 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 84 transitions, 186 flow [2022-12-14 09:17:01,469 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10384 states, 10232 states have (on average 3.5180805316653636) internal successors, (35997), 10383 states have internal predecessors, (35997), 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) [2022-12-14 09:17:01,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:17:01,472 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b7c2bf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:17:01,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-14 09:17:01,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 10384 states, 10232 states have (on average 3.5180805316653636) internal successors, (35997), 10383 states have internal predecessors, (35997), 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) [2022-12-14 09:17:01,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 09:17:01,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:17:01,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 09:17:01,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-14 09:17:01,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:17:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash 30272202, now seen corresponding path program 1 times [2022-12-14 09:17:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:17:01,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984201378] [2022-12-14 09:17:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:17:01,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:17:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:17:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:17:01,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:17:01,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984201378] [2022-12-14 09:17:01,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984201378] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:17:01,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:17:01,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:17:01,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073462467] [2022-12-14 09:17:01,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:17:01,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:17:01,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:17:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:17:01,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:17:01,585 INFO L87 Difference]: Start difference. First operand has 10384 states, 10232 states have (on average 3.5180805316653636) internal successors, (35997), 10383 states have internal predecessors, (35997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 09:17:01,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:17:01,802 INFO L93 Difference]: Finished difference Result 9751 states and 27970 transitions. [2022-12-14 09:17:01,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:17:01,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 09:17:01,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:17:01,844 INFO L225 Difference]: With dead ends: 9751 [2022-12-14 09:17:01,844 INFO L226 Difference]: Without dead ends: 9642 [2022-12-14 09:17:01,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:17:01,845 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 26 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:17:01,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 62 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:17:01,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9642 states. [2022-12-14 09:17:02,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9642 to 9642. [2022-12-14 09:17:02,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9642 states, 9531 states have (on average 2.9038925611163573) internal successors, (27677), 9641 states have internal predecessors, (27677), 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) [2022-12-14 09:17:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9642 states to 9642 states and 27677 transitions. [2022-12-14 09:17:02,114 INFO L78 Accepts]: Start accepts. Automaton has 9642 states and 27677 transitions. Word has length 4 [2022-12-14 09:17:02,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:17:02,114 INFO L495 AbstractCegarLoop]: Abstraction has 9642 states and 27677 transitions. [2022-12-14 09:17:02,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 09:17:02,114 INFO L276 IsEmpty]: Start isEmpty. Operand 9642 states and 27677 transitions. [2022-12-14 09:17:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 09:17:02,115 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:17:02,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:17:02,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:17:02,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-14 09:17:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:17:02,115 INFO L85 PathProgramCache]: Analyzing trace with hash 913645699, now seen corresponding path program 1 times [2022-12-14 09:17:02,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:17:02,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310014683] [2022-12-14 09:17:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:17:02,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:17:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:17:02,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:17:02,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:17:02,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310014683] [2022-12-14 09:17:02,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310014683] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:17:02,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:17:02,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:17:02,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553095039] [2022-12-14 09:17:02,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:17:02,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:17:02,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:17:02,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:17:02,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:17:02,141 INFO L87 Difference]: Start difference. First operand 9642 states and 27677 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:17:02,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:17:02,340 INFO L93 Difference]: Finished difference Result 13305 states and 36904 transitions. [2022-12-14 09:17:02,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:17:02,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 09:17:02,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:17:02,385 INFO L225 Difference]: With dead ends: 13305 [2022-12-14 09:17:02,385 INFO L226 Difference]: Without dead ends: 13269 [2022-12-14 09:17:02,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:17:02,386 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 53 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:17:02,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 52 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:17:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13269 states. [2022-12-14 09:17:02,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13269 to 9944. [2022-12-14 09:17:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9944 states, 9851 states have (on average 2.8457009440665924) internal successors, (28033), 9943 states have internal predecessors, (28033), 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) [2022-12-14 09:17:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9944 states to 9944 states and 28033 transitions. [2022-12-14 09:17:02,670 INFO L78 Accepts]: Start accepts. Automaton has 9944 states and 28033 transitions. Word has length 8 [2022-12-14 09:17:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:17:02,670 INFO L495 AbstractCegarLoop]: Abstraction has 9944 states and 28033 transitions. [2022-12-14 09:17:02,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:17:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 9944 states and 28033 transitions. [2022-12-14 09:17:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 09:17:02,671 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:17:02,671 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 09:17:02,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 09:17:02,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-12-14 09:17:02,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:17:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash 56519219, now seen corresponding path program 1 times [2022-12-14 09:17:02,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:17:02,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189765823] [2022-12-14 09:17:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:17:02,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:17:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:17:02,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:17:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:17:02,693 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:17:02,693 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:17:02,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-14 09:17:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-12-14 09:17:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-12-14 09:17:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-12-14 09:17:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-12-14 09:17:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-12-14 09:17:02,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-12-14 09:17:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-12-14 09:17:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-12-14 09:17:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-12-14 09:17:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-12-14 09:17:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-12-14 09:17:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-12-14 09:17:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-12-14 09:17:02,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-12-14 09:17:02,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 09:17:02,696 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 09:17:02,696 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 09:17:02,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 09:17:02,712 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 09:17:02,714 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:17:02,714 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 242 transitions, 514 flow [2022-12-14 09:17:02,715 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 242 transitions, 514 flow [2022-12-14 09:17:02,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 242 transitions, 514 flow [2022-12-14 09:17:02,781 INFO L130 PetriNetUnfolder]: 62/508 cut-off events. [2022-12-14 09:17:02,782 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-14 09:17:02,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 508 events. 62/508 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1925 event pairs, 1 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 341. Up to 16 conditions per place. [2022-12-14 09:17:02,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 29040 [2022-12-14 09:17:06,238 INFO L134 LiptonReduction]: Checked pairs total: 134352 [2022-12-14 09:17:06,238 INFO L136 LiptonReduction]: Total number of compositions: 201 [2022-12-14 09:17:06,239 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 98 places, 116 transitions, 262 flow [2022-12-14 09:17:11,490 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 253024 states, 252187 states have (on average 4.727083473771447) internal successors, (1192109), 253023 states have internal predecessors, (1192109), 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) [2022-12-14 09:17:11,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:17:11,492 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b7c2bf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:17:11,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-14 09:17:11,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 253024 states, 252187 states have (on average 4.727083473771447) internal successors, (1192109), 253023 states have internal predecessors, (1192109), 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) [2022-12-14 09:17:11,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 09:17:11,860 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:17:11,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 09:17:11,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-14 09:17:11,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:17:11,861 INFO L85 PathProgramCache]: Analyzing trace with hash 44997525, now seen corresponding path program 1 times [2022-12-14 09:17:11,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:17:11,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544104018] [2022-12-14 09:17:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:17:11,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:17:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:17:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:17:11,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:17:11,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544104018] [2022-12-14 09:17:11,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544104018] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:17:11,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:17:11,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:17:11,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433636905] [2022-12-14 09:17:11,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:17:11,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:17:11,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:17:11,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:17:11,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:17:12,217 INFO L87 Difference]: Start difference. First operand has 253024 states, 252187 states have (on average 4.727083473771447) internal successors, (1192109), 253023 states have internal predecessors, (1192109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 09:17:14,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:17:14,492 INFO L93 Difference]: Finished difference Result 237391 states and 904998 transitions. [2022-12-14 09:17:14,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:17:14,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 09:17:14,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:17:15,944 INFO L225 Difference]: With dead ends: 237391 [2022-12-14 09:17:15,945 INFO L226 Difference]: Without dead ends: 236970 [2022-12-14 09:17:15,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:17:15,946 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 26 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:17:15,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 88 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:17:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236970 states. [2022-12-14 09:17:21,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236970 to 236970. [2022-12-14 09:17:21,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236970 states, 236358 states have (on average 3.822798466732668) internal successors, (903549), 236969 states have internal predecessors, (903549), 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) [2022-12-14 09:17:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236970 states to 236970 states and 903549 transitions. [2022-12-14 09:17:23,326 INFO L78 Accepts]: Start accepts. Automaton has 236970 states and 903549 transitions. Word has length 4 [2022-12-14 09:17:23,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:17:23,327 INFO L495 AbstractCegarLoop]: Abstraction has 236970 states and 903549 transitions. [2022-12-14 09:17:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 09:17:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 236970 states and 903549 transitions. [2022-12-14 09:17:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 09:17:23,327 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:17:23,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:17:23,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 09:17:23,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-14 09:17:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:17:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1324339710, now seen corresponding path program 1 times [2022-12-14 09:17:23,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:17:23,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183167805] [2022-12-14 09:17:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:17:23,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:17:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:17:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:17:23,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:17:23,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183167805] [2022-12-14 09:17:23,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183167805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:17:23,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:17:23,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:17:23,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610630626] [2022-12-14 09:17:23,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:17:23,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:17:23,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:17:23,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:17:23,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:17:23,353 INFO L87 Difference]: Start difference. First operand 236970 states and 903549 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:17:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:17:26,232 INFO L93 Difference]: Finished difference Result 382136 states and 1402517 transitions. [2022-12-14 09:17:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:17:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 09:17:26,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:17:28,192 INFO L225 Difference]: With dead ends: 382136 [2022-12-14 09:17:28,192 INFO L226 Difference]: Without dead ends: 382019 [2022-12-14 09:17:28,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:17:28,193 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 72 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:17:28,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 71 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:17:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382019 states. [2022-12-14 09:17:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382019 to 273725. [2022-12-14 09:17:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273725 states, 273151 states have (on average 3.7464699012634037) internal successors, (1023352), 273724 states have internal predecessors, (1023352), 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) [2022-12-14 09:17:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273725 states to 273725 states and 1023352 transitions. [2022-12-14 09:17:37,637 INFO L78 Accepts]: Start accepts. Automaton has 273725 states and 1023352 transitions. Word has length 8 [2022-12-14 09:17:37,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:17:37,637 INFO L495 AbstractCegarLoop]: Abstraction has 273725 states and 1023352 transitions. [2022-12-14 09:17:37,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:17:37,638 INFO L276 IsEmpty]: Start isEmpty. Operand 273725 states and 1023352 transitions. [2022-12-14 09:17:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 09:17:37,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:17:37,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:17:37,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 09:17:37,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-14 09:17:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:17:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash -790179776, now seen corresponding path program 1 times [2022-12-14 09:17:37,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:17:37,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141118351] [2022-12-14 09:17:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:17:37,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:17:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:17:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:17:37,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:17:37,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141118351] [2022-12-14 09:17:37,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141118351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:17:37,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:17:37,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:17:37,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429794698] [2022-12-14 09:17:37,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:17:37,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:17:37,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:17:37,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:17:37,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:17:37,671 INFO L87 Difference]: Start difference. First operand 273725 states and 1023352 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-14 09:17:39,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:17:39,933 INFO L93 Difference]: Finished difference Result 281752 states and 1052775 transitions. [2022-12-14 09:17:39,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:17:39,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 09:17:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:17:41,605 INFO L225 Difference]: With dead ends: 281752 [2022-12-14 09:17:41,605 INFO L226 Difference]: Without dead ends: 281752 [2022-12-14 09:17:41,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:17:41,606 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 59 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:17:41,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 77 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:17:42,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281752 states. [2022-12-14 09:17:48,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281752 to 281752. [2022-12-14 09:17:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281752 states, 281189 states have (on average 3.744012034610173) internal successors, (1052775), 281751 states have internal predecessors, (1052775), 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) [2022-12-14 09:17:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281752 states to 281752 states and 1052775 transitions. [2022-12-14 09:17:49,602 INFO L78 Accepts]: Start accepts. Automaton has 281752 states and 1052775 transitions. Word has length 12 [2022-12-14 09:17:49,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:17:49,603 INFO L495 AbstractCegarLoop]: Abstraction has 281752 states and 1052775 transitions. [2022-12-14 09:17:49,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-12-14 09:17:49,603 INFO L276 IsEmpty]: Start isEmpty. Operand 281752 states and 1052775 transitions. [2022-12-14 09:17:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 09:17:49,605 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:17:49,605 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 09:17:49,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 09:17:49,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-14 09:17:49,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:17:49,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2048140564, now seen corresponding path program 1 times [2022-12-14 09:17:49,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:17:49,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046918830] [2022-12-14 09:17:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:17:49,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:17:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:17:49,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:17:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:17:49,637 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:17:49,637 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:17:49,638 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-14 09:17:49,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-12-14 09:17:49,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-12-14 09:17:49,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-12-14 09:17:49,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-12-14 09:17:49,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-12-14 09:17:49,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-12-14 09:17:49,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-12-14 09:17:49,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-12-14 09:17:49,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-12-14 09:17:49,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-12-14 09:17:49,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-12-14 09:17:49,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-12-14 09:17:49,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-12-14 09:17:49,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-12-14 09:17:49,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-12-14 09:17:49,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-12-14 09:17:49,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-12-14 09:17:49,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-12-14 09:17:49,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 09:17:49,641 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-14 09:17:49,641 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 09:17:49,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-14 09:17:49,660 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 09:17:49,663 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:17:49,663 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 288 transitions, 620 flow [2022-12-14 09:17:49,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 288 transitions, 620 flow [2022-12-14 09:17:49,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 288 transitions, 620 flow [2022-12-14 09:17:49,759 INFO L130 PetriNetUnfolder]: 96/775 cut-off events. [2022-12-14 09:17:49,760 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-14 09:17:49,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 775 events. 96/775 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3306 event pairs, 6 based on Foata normal form. 0/642 useless extension candidates. Maximal degree in co-relation 528. Up to 32 conditions per place. [2022-12-14 09:17:49,786 INFO L119 LiptonReduction]: Number of co-enabled transitions 46992 [2022-12-14 09:17:53,574 INFO L134 LiptonReduction]: Checked pairs total: 233947 [2022-12-14 09:17:53,575 INFO L136 LiptonReduction]: Total number of compositions: 232 [2022-12-14 09:17:53,576 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 124 places, 147 transitions, 338 flow