./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/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_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/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_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --- 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 12:13:34,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:13:34,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:13:34,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:13:34,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:13:34,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:13:34,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:13:34,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:13:34,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:13:34,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:13:34,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:13:34,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:13:34,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:13:34,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:13:34,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:13:34,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:13:34,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:13:34,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:13:34,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:13:34,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:13:34,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:13:34,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:13:34,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:13:34,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:13:34,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:13:34,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:13:34,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:13:34,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:13:34,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:13:34,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:13:34,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:13:34,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:13:34,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:13:34,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:13:34,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:13:34,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:13:34,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:13:34,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:13:34,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:13:34,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:13:34,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:13:34,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 12:13:34,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:13:34,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:13:34,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:13:34,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:13:34,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:13:34,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:13:34,108 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:13:34,108 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:13:34,108 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:13:34,108 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:13:34,108 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:13:34,108 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:13:34,109 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:13:34,109 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:13:34,109 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:13:34,109 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:13:34,109 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:13:34,109 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:13:34,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:13:34,110 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:13:34,110 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:13:34,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:13:34,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:13:34,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:13:34,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:13:34,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:13:34,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:13:34,111 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 12:13:34,112 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:13:34,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:13:34,112 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:13:34,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:13:34,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:13:34,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:13:34,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:13:34,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:13:34,113 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:13:34,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:13:34,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:13:34,113 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:13:34,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:13:34,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:13:34,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:13:34,114 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_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc [2022-12-14 12:13:34,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:13:34,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:13:34,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:13:34,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:13:34,317 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:13:34,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2022-12-14 12:13:36,880 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:13:37,071 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:13:37,072 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2022-12-14 12:13:37,081 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/bin/utaipan-gh47qXpMRh/data/1f51fd0ba/1f3156f9e4774b10aad5d941c0b3eaca/FLAG72303909e [2022-12-14 12:13:37,448 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/bin/utaipan-gh47qXpMRh/data/1f51fd0ba/1f3156f9e4774b10aad5d941c0b3eaca [2022-12-14 12:13:37,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:13:37,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:13:37,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:13:37,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:13:37,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:13:37,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a390e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37, skipping insertion in model container [2022-12-14 12:13:37,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:13:37,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:13:37,769 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_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i[41322,41335] [2022-12-14 12:13:37,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:13:37,795 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:13:37,819 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_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i[41322,41335] [2022-12-14 12:13:37,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:13:37,858 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:13:37,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37 WrapperNode [2022-12-14 12:13:37,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:13:37,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:13:37,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:13:37,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:13:37,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,890 INFO L138 Inliner]: procedures = 270, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2022-12-14 12:13:37,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:13:37,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:13:37,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:13:37,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:13:37,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,909 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:13:37,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:13:37,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:13:37,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:13:37,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (1/1) ... [2022-12-14 12:13:37,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:13:37,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:13:37,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:13:37,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d937d0e-b4a8-43ad-831f-f2e2c56c8503/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:13:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:13:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:13:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:13:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:13:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 12:13:37,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:13:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-14 12:13:37,983 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-14 12:13:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:13:37,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:13:37,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:13:37,985 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 12:13:38,095 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:13:38,097 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:13:38,279 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:13:38,285 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:13:38,285 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-14 12:13:38,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:13:38 BoogieIcfgContainer [2022-12-14 12:13:38,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:13:38,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:13:38,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:13:38,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:13:38,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:13:37" (1/3) ... [2022-12-14 12:13:38,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386508e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:13:38, skipping insertion in model container [2022-12-14 12:13:38,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:13:37" (2/3) ... [2022-12-14 12:13:38,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386508e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:13:38, skipping insertion in model container [2022-12-14 12:13:38,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:13:38" (3/3) ... [2022-12-14 12:13:38,294 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2022-12-14 12:13:38,300 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 12:13:38,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:13:38,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 12:13:38,308 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 12:13:38,352 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-14 12:13:38,376 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:13:38,387 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 148 transitions, 304 flow [2022-12-14 12:13:38,389 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 148 transitions, 304 flow [2022-12-14 12:13:38,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 148 transitions, 304 flow [2022-12-14 12:13:38,437 INFO L130 PetriNetUnfolder]: 23/201 cut-off events. [2022-12-14 12:13:38,437 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-14 12:13:38,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 201 events. 23/201 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-12-14 12:13:38,444 INFO L119 LiptonReduction]: Number of co-enabled transitions 5192 [2022-12-14 12:13:41,596 INFO L134 LiptonReduction]: Checked pairs total: 11386 [2022-12-14 12:13:41,596 INFO L136 LiptonReduction]: Total number of compositions: 141 [2022-12-14 12:13:41,602 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 46 transitions, 100 flow [2022-12-14 12:13:41,633 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 314 states, 287 states have (on average 2.554006968641115) internal successors, (733), 313 states have internal predecessors, (733), 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 12:13:41,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:13:41,655 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;@59ad9601, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:13:41,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-14 12:13:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 287 states have (on average 2.554006968641115) internal successors, (733), 313 states have internal predecessors, (733), 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 12:13:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:13:41,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:41,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:13:41,663 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 12:13:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:41,667 INFO L85 PathProgramCache]: Analyzing trace with hash 569836, now seen corresponding path program 1 times [2022-12-14 12:13:41,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:41,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551239130] [2022-12-14 12:13:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:41,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:41,838 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 12:13:41,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:41,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551239130] [2022-12-14 12:13:41,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551239130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:41,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:41,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:13:41,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704901439] [2022-12-14 12:13:41,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:41,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:13:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:41,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:13:41,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:13:41,861 INFO L87 Difference]: Start difference. First operand has 314 states, 287 states have (on average 2.554006968641115) internal successors, (733), 313 states have internal predecessors, (733), 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 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 12:13:41,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:41,929 INFO L93 Difference]: Finished difference Result 258 states and 496 transitions. [2022-12-14 12:13:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:13:41,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-12-14 12:13:41,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:41,939 INFO L225 Difference]: With dead ends: 258 [2022-12-14 12:13:41,939 INFO L226 Difference]: Without dead ends: 237 [2022-12-14 12:13:41,940 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 12:13:41,942 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:41,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 18 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:13:41,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-12-14 12:13:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-12-14 12:13:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 227 states have (on average 2.0) internal successors, (454), 236 states have internal predecessors, (454), 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 12:13:41,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 454 transitions. [2022-12-14 12:13:41,982 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 454 transitions. Word has length 3 [2022-12-14 12:13:41,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:41,982 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 454 transitions. [2022-12-14 12:13:41,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 12:13:41,983 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 454 transitions. [2022-12-14 12:13:41,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 12:13:41,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:41,983 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 12:13:41,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:13:41,984 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 12:13:41,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:41,984 INFO L85 PathProgramCache]: Analyzing trace with hash -255781666, now seen corresponding path program 1 times [2022-12-14 12:13:41,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:41,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035277706] [2022-12-14 12:13:41,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:41,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:13:42,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:13:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:13:42,042 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:13:42,042 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:13:42,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-12-14 12:13:42,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-12-14 12:13:42,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-12-14 12:13:42,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-12-14 12:13:42,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-12-14 12:13:42,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-12-14 12:13:42,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-12-14 12:13:42,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-12-14 12:13:42,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-12-14 12:13:42,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-12-14 12:13:42,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-12-14 12:13:42,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:13:42,048 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 12:13:42,049 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 12:13:42,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 12:13:42,070 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 12:13:42,074 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:13:42,074 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 194 transitions, 406 flow [2022-12-14 12:13:42,075 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 194 transitions, 406 flow [2022-12-14 12:13:42,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 194 transitions, 406 flow [2022-12-14 12:13:42,132 INFO L130 PetriNetUnfolder]: 40/331 cut-off events. [2022-12-14 12:13:42,133 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 12:13:42,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 331 events. 40/331 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. 0/272 useless extension candidates. Maximal degree in co-relation 203. Up to 9 conditions per place. [2022-12-14 12:13:42,145 INFO L119 LiptonReduction]: Number of co-enabled transitions 15224 [2022-12-14 12:13:45,093 INFO L134 LiptonReduction]: Checked pairs total: 61584 [2022-12-14 12:13:45,094 INFO L136 LiptonReduction]: Total number of compositions: 167 [2022-12-14 12:13:45,095 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 83 transitions, 184 flow [2022-12-14 12:13:45,310 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9783 states, 9631 states have (on average 3.527671062194995) internal successors, (33975), 9782 states have internal predecessors, (33975), 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 12:13:45,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:13:45,311 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;@59ad9601, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:13:45,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-14 12:13:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 9783 states, 9631 states have (on average 3.527671062194995) internal successors, (33975), 9782 states have internal predecessors, (33975), 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 12:13:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:13:45,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:45,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:13:45,328 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 12:13:45,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:45,328 INFO L85 PathProgramCache]: Analyzing trace with hash 963956, now seen corresponding path program 1 times [2022-12-14 12:13:45,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:45,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018280769] [2022-12-14 12:13:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:45,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:45,358 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 12:13:45,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:45,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018280769] [2022-12-14 12:13:45,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018280769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:45,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:45,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:13:45,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223660828] [2022-12-14 12:13:45,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:45,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:13:45,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:45,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:13:45,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:13:45,370 INFO L87 Difference]: Start difference. First operand has 9783 states, 9631 states have (on average 3.527671062194995) internal successors, (33975), 9782 states have internal predecessors, (33975), 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 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 12:13:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:45,559 INFO L93 Difference]: Finished difference Result 9151 states and 26243 transitions. [2022-12-14 12:13:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:13:45,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-12-14 12:13:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:45,624 INFO L225 Difference]: With dead ends: 9151 [2022-12-14 12:13:45,624 INFO L226 Difference]: Without dead ends: 9054 [2022-12-14 12:13:45,625 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 12:13:45,639 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 26 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:45,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 62 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:13:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9054 states. [2022-12-14 12:13:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9054 to 9054. [2022-12-14 12:13:45,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9054 states, 8943 states have (on average 2.90540087219054) internal successors, (25983), 9053 states have internal predecessors, (25983), 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 12:13:45,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9054 states to 9054 states and 25983 transitions. [2022-12-14 12:13:45,913 INFO L78 Accepts]: Start accepts. Automaton has 9054 states and 25983 transitions. Word has length 3 [2022-12-14 12:13:45,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:45,914 INFO L495 AbstractCegarLoop]: Abstraction has 9054 states and 25983 transitions. [2022-12-14 12:13:45,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 12:13:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 9054 states and 25983 transitions. [2022-12-14 12:13:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:13:45,915 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:45,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:13:45,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:13:45,915 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 12:13:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash -773167880, now seen corresponding path program 1 times [2022-12-14 12:13:45,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:45,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680598794] [2022-12-14 12:13:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:45,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:45,950 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 12:13:45,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:45,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680598794] [2022-12-14 12:13:45,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680598794] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:45,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:45,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:13:45,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691182573] [2022-12-14 12:13:45,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:45,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:13:45,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:45,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:13:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:13:45,953 INFO L87 Difference]: Start difference. First operand 9054 states and 25983 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 12:13:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:46,155 INFO L93 Difference]: Finished difference Result 12595 states and 34874 transitions. [2022-12-14 12:13:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:13:46,156 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 12:13:46,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:46,207 INFO L225 Difference]: With dead ends: 12595 [2022-12-14 12:13:46,208 INFO L226 Difference]: Without dead ends: 12559 [2022-12-14 12:13:46,208 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 12:13:46,208 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 52 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:46,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 52 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:13:46,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12559 states. [2022-12-14 12:13:46,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12559 to 9354. [2022-12-14 12:13:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9354 states, 9261 states have (on average 2.8453730698628656) internal successors, (26351), 9353 states have internal predecessors, (26351), 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 12:13:46,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9354 states to 9354 states and 26351 transitions. [2022-12-14 12:13:46,474 INFO L78 Accepts]: Start accepts. Automaton has 9354 states and 26351 transitions. Word has length 8 [2022-12-14 12:13:46,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:13:46,475 INFO L495 AbstractCegarLoop]: Abstraction has 9354 states and 26351 transitions. [2022-12-14 12:13:46,475 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 12:13:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 9354 states and 26351 transitions. [2022-12-14 12:13:46,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:13:46,476 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:46,476 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 12:13:46,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:13:46,476 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 12:13:46,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:46,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1290467669, now seen corresponding path program 1 times [2022-12-14 12:13:46,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:46,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725450907] [2022-12-14 12:13:46,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:46,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:13:46,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:13:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:13:46,505 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:13:46,505 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:13:46,506 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-12-14 12:13:46,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-12-14 12:13:46,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-12-14 12:13:46,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-12-14 12:13:46,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-12-14 12:13:46,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-12-14 12:13:46,506 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-12-14 12:13:46,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-12-14 12:13:46,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-12-14 12:13:46,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-12-14 12:13:46,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-12-14 12:13:46,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-12-14 12:13:46,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-12-14 12:13:46,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-12-14 12:13:46,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-12-14 12:13:46,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:13:46,508 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 12:13:46,508 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 12:13:46,508 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 12:13:46,524 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 12:13:46,526 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:13:46,527 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 240 transitions, 510 flow [2022-12-14 12:13:46,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 240 transitions, 510 flow [2022-12-14 12:13:46,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 240 transitions, 510 flow [2022-12-14 12:13:46,619 INFO L130 PetriNetUnfolder]: 62/506 cut-off events. [2022-12-14 12:13:46,619 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-14 12:13:46,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 506 events. 62/506 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1926 event pairs, 1 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 339. Up to 16 conditions per place. [2022-12-14 12:13:46,633 INFO L119 LiptonReduction]: Number of co-enabled transitions 29040 [2022-12-14 12:13:49,844 INFO L134 LiptonReduction]: Checked pairs total: 133187 [2022-12-14 12:13:49,845 INFO L136 LiptonReduction]: Total number of compositions: 202 [2022-12-14 12:13:49,846 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 114 transitions, 258 flow [2022-12-14 12:13:54,420 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 238599 states, 237762 states have (on average 4.675793440499323) internal successors, (1111726), 238598 states have internal predecessors, (1111726), 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 12:13:54,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:13:54,422 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;@59ad9601, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:13:54,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-12-14 12:13:54,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 238599 states, 237762 states have (on average 4.675793440499323) internal successors, (1111726), 238598 states have internal predecessors, (1111726), 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 12:13:54,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:13:54,725 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:13:54,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:13:54,726 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 12:13:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:13:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1441515, now seen corresponding path program 1 times [2022-12-14 12:13:54,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:13:54,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554627358] [2022-12-14 12:13:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:13:54,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:13:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:13:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:13:54,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:13:54,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554627358] [2022-12-14 12:13:54,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554627358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:13:54,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:13:54,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:13:54,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037118755] [2022-12-14 12:13:54,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:13:54,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:13:54,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:54,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:13:54,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:13:55,050 INFO L87 Difference]: Start difference. First operand has 238599 states, 237762 states have (on average 4.675793440499323) internal successors, (1111726), 238598 states have internal predecessors, (1111726), 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 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 12:13:57,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:13:57,344 INFO L93 Difference]: Finished difference Result 222967 states and 849703 transitions. [2022-12-14 12:13:57,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:13:57,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-12-14 12:13:57,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:13:58,848 INFO L225 Difference]: With dead ends: 222967 [2022-12-14 12:13:58,848 INFO L226 Difference]: Without dead ends: 222585 [2022-12-14 12:13:58,848 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 12:13:58,849 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 26 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:13:58,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 88 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:13:59,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222585 states. [2022-12-14 12:14:04,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222585 to 222585. [2022-12-14 12:14:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222585 states, 221973 states have (on average 3.822063944713997) internal successors, (848395), 222584 states have internal predecessors, (848395), 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 12:14:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222585 states to 222585 states and 848395 transitions. [2022-12-14 12:14:06,309 INFO L78 Accepts]: Start accepts. Automaton has 222585 states and 848395 transitions. Word has length 3 [2022-12-14 12:14:06,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:14:06,309 INFO L495 AbstractCegarLoop]: Abstraction has 222585 states and 848395 transitions. [2022-12-14 12:14:06,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 12:14:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 222585 states and 848395 transitions. [2022-12-14 12:14:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:14:06,310 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:14:06,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:14:06,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:14:06,310 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 12:14:06,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:14:06,311 INFO L85 PathProgramCache]: Analyzing trace with hash 494245214, now seen corresponding path program 1 times [2022-12-14 12:14:06,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:14:06,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497334317] [2022-12-14 12:14:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:14:06,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:14:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:14:06,340 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 12:14:06,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:14:06,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497334317] [2022-12-14 12:14:06,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497334317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:14:06,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:14:06,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:14:06,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137685130] [2022-12-14 12:14:06,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:14:06,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:14:06,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:14:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:14:06,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:14:06,342 INFO L87 Difference]: Start difference. First operand 222585 states and 848395 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 12:14:09,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:14:09,146 INFO L93 Difference]: Finished difference Result 360917 states and 1322675 transitions. [2022-12-14 12:14:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:14:09,146 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 12:14:09,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:14:10,993 INFO L225 Difference]: With dead ends: 360917 [2022-12-14 12:14:10,993 INFO L226 Difference]: Without dead ends: 360800 [2022-12-14 12:14:10,993 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 12:14:10,994 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 71 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:14:10,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 71 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:14:11,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360800 states. [2022-12-14 12:14:18,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360800 to 257666. [2022-12-14 12:14:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257666 states, 257092 states have (on average 3.744239416240101) internal successors, (962614), 257665 states have internal predecessors, (962614), 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 12:14:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257666 states to 257666 states and 962614 transitions. [2022-12-14 12:14:19,927 INFO L78 Accepts]: Start accepts. Automaton has 257666 states and 962614 transitions. Word has length 8 [2022-12-14 12:14:19,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:14:19,927 INFO L495 AbstractCegarLoop]: Abstraction has 257666 states and 962614 transitions. [2022-12-14 12:14:19,927 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 12:14:19,927 INFO L276 IsEmpty]: Start isEmpty. Operand 257666 states and 962614 transitions. [2022-12-14 12:14:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 12:14:19,929 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:14:19,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:14:19,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 12:14:19,929 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 12:14:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:14:19,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1776865023, now seen corresponding path program 1 times [2022-12-14 12:14:19,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:14:19,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055079253] [2022-12-14 12:14:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:14:19,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:14:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:14:19,967 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 12:14:19,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:14:19,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055079253] [2022-12-14 12:14:19,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055079253] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:14:19,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:14:19,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:14:19,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82288613] [2022-12-14 12:14:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:14:19,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:14:19,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:14:19,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:14:19,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:14:19,969 INFO L87 Difference]: Start difference. First operand 257666 states and 962614 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 12:14:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:14:22,067 INFO L93 Difference]: Finished difference Result 265262 states and 990416 transitions. [2022-12-14 12:14:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:14:22,068 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 12:14:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:14:23,499 INFO L225 Difference]: With dead ends: 265262 [2022-12-14 12:14:23,500 INFO L226 Difference]: Without dead ends: 265262 [2022-12-14 12:14:23,500 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 12:14:23,500 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 58 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:14:23,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 77 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:14:23,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265262 states. [2022-12-14 12:14:29,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265262 to 265262. [2022-12-14 12:14:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265262 states, 264699 states have (on average 3.741668838945368) internal successors, (990416), 265261 states have internal predecessors, (990416), 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 12:14:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265262 states to 265262 states and 990416 transitions. [2022-12-14 12:14:31,336 INFO L78 Accepts]: Start accepts. Automaton has 265262 states and 990416 transitions. Word has length 12 [2022-12-14 12:14:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:14:31,336 INFO L495 AbstractCegarLoop]: Abstraction has 265262 states and 990416 transitions. [2022-12-14 12:14:31,337 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 12:14:31,337 INFO L276 IsEmpty]: Start isEmpty. Operand 265262 states and 990416 transitions. [2022-12-14 12:14:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 12:14:31,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:14:31,341 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 12:14:31,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 12:14:31,341 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 12:14:31,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:14:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash 587425980, now seen corresponding path program 1 times [2022-12-14 12:14:31,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:14:31,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576573246] [2022-12-14 12:14:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:14:31,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:14:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:14:31,360 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 12:14:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 12:14:31,378 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 12:14:31,378 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 12:14:31,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-12-14 12:14:31,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-12-14 12:14:31,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-12-14 12:14:31,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-12-14 12:14:31,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-12-14 12:14:31,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-12-14 12:14:31,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-12-14 12:14:31,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-12-14 12:14:31,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-12-14 12:14:31,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-12-14 12:14:31,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-12-14 12:14:31,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-12-14 12:14:31,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-12-14 12:14:31,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-12-14 12:14:31,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-12-14 12:14:31,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-12-14 12:14:31,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-12-14 12:14:31,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-12-14 12:14:31,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-12-14 12:14:31,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 12:14:31,382 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-14 12:14:31,382 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 12:14:31,382 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-14 12:14:31,406 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 12:14:31,410 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:14:31,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 286 transitions, 616 flow [2022-12-14 12:14:31,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 286 transitions, 616 flow [2022-12-14 12:14:31,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 286 transitions, 616 flow [2022-12-14 12:14:31,539 INFO L130 PetriNetUnfolder]: 96/773 cut-off events. [2022-12-14 12:14:31,539 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-14 12:14:31,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 773 events. 96/773 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3348 event pairs, 6 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 526. Up to 32 conditions per place. [2022-12-14 12:14:31,571 INFO L119 LiptonReduction]: Number of co-enabled transitions 46992 [2022-12-14 12:14:35,774 INFO L134 LiptonReduction]: Checked pairs total: 232785 [2022-12-14 12:14:35,774 INFO L136 LiptonReduction]: Total number of compositions: 231 [2022-12-14 12:14:35,775 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 123 places, 146 transitions, 336 flow